Mechanical Hardware

When I opened the mailbox this morning, I saw an email from Bruce, which should be a re-order for the hydraulic relief valve, because he asked about the durability of AAK hydraulic relief valve spool last week. Opening the e-mail, it is indeed the need for purchasing a large number of 420 hydraulic relief valves, and requiring 3 years of quality guarantee. Bruce is a purchaser of Konecranes in Finland. 3 years ago, a customer of his company complained that the crane was easy to depressurize during work, resulting in the inability of the crane to bear the force. Especially after the working temperature reaches 55 ° C, the pressure cannot go up. Field engineers believe that this is a problem of the hydraulic system, such as low pressure regulation of the hydraulic relief valve, wear of the hydraulic system, or oil pollution. No abnormality was found after inspection. Finally, it was determined that the fault occurred on the hydraulic relief valve. After disassembling the hydraulic relief valve, it was found that the cone valve spool was worn, affecting the sealing of the hydraulic system, so the oil pressure could not rise. The customer does not understand why the valve spool of this hydraulic relief valve is worn after less than 2 years of use. The customer requested to replace with a batch of hydraulic relief valves with durability of more than 3 years and use them on these 12 faulty cranes. At that time, Bruce contacted more than 10 hydraulic relief valve manufacturers and got reply that the warranty could not be achieved for 3 years. Some hydraulic valve manufacturers replied that they only have 50% confidence. This result embarrassed Bruce. The customer requirements for the hydraulic relief valve could not be implemented, how he should explain to the boss. I received message from Bruce on the company website of AAK (www.aakindusrty. Com): "can AAK really provide a 3-year warranty hydraulic relief valve? I replied directly: just give it a try then you will know. I can't make money with the trial orders of several samples, and you can't lose money. Maybe Bruce was stimulated and sent us the test order the next day for 4 hydraulic relief valves. Bruce also frankly told AAK that two other hydraulic valve manufacturers would also try the order at the same time. Their plan is that each factory will be tested for 4 samples, with a total of 12 hydraulic relief valves to meet the urgent needs of customer first. About 2 years after the samples were sent, we received email from Bruce again for another trial order of 8 hydraulic relief valves. I felt strange and thought that they actually didn't have big quantity order for hydraulic valves. Until last week, from his email, we learnt that they had tested the hydraulic relief valves provided by AAK for 3 years. Indeed, 3 years later, AAK hydraulic relief valves still worked normally, and the hydraulic relief valves provided by the other two manufacturers had faults in less than 2 years. According to the working conditions, we understand that the core of durability of the hydraulic relief valve from Bruce is the valve spool, so we use the bearing steel imported from Korea and use our brains in heat treatment. After hot rolling, the steel is spheroidized and annealed, and then cold drawn. The processed bearing steel has high hardness, high wear resistance and hardenability. It is difficult to find other steels to benchmark it. Wear resistance for 3 years is certain, and maybe there is no problem for 5 years. AAK hydraulic relief valve, impressed Bruce with its high durability. If you also encountered a hydraulic relief valve failure, just contact us to give it a try! https://www.aakindustry.com/info-detail/hy , draulic-relief-valves-aak133

Alvis is from Norway and has been in contact with AAK for 1 year. There were some inquiries for hydraulic manifold blocks, but no actual order. It was not until December last year that the trust door was completely opened. It took him 6 months for a special hydraulic manifold block, but it didn't work. AAK solved the problem with the first sample. A set of hydraulic manifold designed by Alvis will be exhibited in America. He selected a local hydraulic manifold block manufacturer that has cooperated for 3 years to try the sample, but the hydraulic system is unstable. The manufacturer advised that this hydraulic manifold block has many feedback oil circuits and control oil circuits, and the oil circuits is composed of small deep holes. The diameter of the damping hole is less than 1mm, and it is difficult to eliminate burrs for 100%, which may lead to blockage of the oil circuit. If the original design requirements of the hydraulic manifold block are not changed, the manufacturer would not be able to produce it. If the parameters are changed, the selling point of hydraulic manifold will be lost. Alvis is very distressed. He also tried to work with several other local hydraulic manifold manufacturers to make samples, but none of them is able to cooperate with him. In this way, 4 months have been wasted. Alvis wanted to try overseas hydraulic suppliers, and sent me an email. According to his hydraulic manifold block drawing, our technical team analyzed and discussed it, and concluded that if the original design was not improved, the burr hazard would still exist. Alvis seemed to think that AAK is unable to sample the hydraulic manifold block, so he did not have further contact with us. 1 month later, he came back to us again to discuss this hydraulic manifold block, and asked about our optimization plan. I realized that he was desperate, and told him that AAK did not need to change the parameters of the hydraulic manifold block, but only needed to increase the angle between the two planes greater than 150 °, but the best degree still needed to be explored. Alvis suddenly realized it and blamed me for not telling him earlier. I joked that he didn't give me a chance to tell him. After changing materials for 2 times, and adjusting the processing parameters for 4 times, it was determined that 158 ° would be the best angle. After 30 days, 3 hydraulic manifold blocks were sent out. 3 weeks later, Alvis told us that the hydraulic manifold was running stably, meeting the system requirements, and we just need to wait for the good news of the exhibition. He sighed that for this exhibition, he was in trepidation for 6 months, but did not expect that the first sample of AAK was successful. In the future, AAK will be his preferred supplier for hydraulic manifold blocks. This is also what I said before. Whether customers buy your products or not is not because of your poor price or long distance. The root cause is that the trust is not in place. AAK hydraulic manifold blocks, in regards to deburring method, the following 3 points are critical: 1. Select materials with small elongation and deformation hardening index to effectively suppress burr. 2. Optimize the valve body structure, the included angle between two planes shall be greater than 150 °, and the best degree shall be tested continuously. 3. Use high-pressure solution jet to remove burrs, use solution to weaken the magnetism of burrs, and then use the instantaneous impact force of liquid to ensure that the hydraulic manifold block is 100% burr free. AAK hydraulic manifold blocks, no burr, no pollution, no leakage, welcome to try! https://www.aakindustry.com/info-d , etail/hydraulic-manifold-blocks-aak390

Donald, a hydraulic valve customer from the United States, recently had an order for hydraulic valve sleeve parts with an old supplier. It took more than 30 days to adjust the approval sample of hydraulic valve sleeve for many times. The taper of hydraulic valve sleeve always failed to meet the customer requirement of 0.3-0.5μm. The manufacturer can only give up the order, but this wastes Donald's time. The trouble is that the customer is still urging the progress of the modification of the hydraulic valve sleeve. Donald consulted more than 30 hydraulic valve manufacturers online, but none of them can guarantee that the taper could reach 0.3-0.5μm. Only 2 manufacturers indicated that 1-2μm is the limit that they can reach. Donald plans to give up this hydraulic valve sleeve order, but he doesn't know how to talk to the customer. While Donald was worried, his colleague Smith gave him the contact information of AAK HYDRAULIC VALVE. Smith had inquired about the hydraulic valve with AAK before. Smith directly emailed us the inquiry requirements and the drawings of the hydraulic valve sleeve, and CC Donald. He asked us to communicate with Donald directly to see how to solve the taper requirements of the hydraulic valve sleeve. After our technical department had a meeting, they found that it was really a bit tricky. At present, they are not sure to tell the specific accuracy of the taper of the hydraulic valve sleeve. Except for the taper of the hydraulic valve sleeve, the straightness and roundness can fully meet the requirements. We can study the taper of the hydraulic valve sleeve while proofing. However, the specific parameters still need to be determined until the final samples come out. With a try attitude, Donald asked us to start sampling the same day. A week later, we sent out the samples of the hydraulic valve sleeve. A few days later, Donald asked by email if we could try again to improve the taper accuracy of our hydraulic valve sleeve from 0.8-1.2μm to 0.3-0.5μm to meet the customer requirement. AAK technical department made modification and adjustment for 3 days and 2 nights, and sent the modified sample of hydraulic valve sleeve on the 4th day. Donald soon informed that the parameters of the second hydraulic valve sleeve sample of AAK met the requirements. Donald is curious that more than 30 hydraulic valve manufacturers can't achieve the taper accuracy of hydraulic valve sleeve. How can AAK achieve it by making samples only in two times? As a precision part, the precision of hydraulic valve sleeve is guaranteed by operators and equipment, especially precision grinding is very important. For most hydraulic valve manufacturers, the length of the grinder they used is basically an extended grinder with a hole length of 120%. Although it can repair and maintain the hole straightness, the accuracy of the hydraulic valve sleeve can only be controlled at 1-2μm maximum. 3 years ago, AAK adopted a grinder with a length of about 90% of the hole length, which can reach 0.5μm taper, but not stable. The taper can only be improved to about 0.5μm until the cylindrical grinder is explored to replace the extended grinder. Our proofing master has been groping on the machine for more than 12 years. He has worked out the process step by step and constantly corrected the operation method to obtain the fixed process, so as to ensure the 0.3-0.5μm accuracy high requirements of the hydraulic valve sleeve. AAK hydraulic valve has been pondering precision and never stopped. You can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-valve-sleeve-aak132

A few days ago, the development department of hydraulic manifold manufacturer AAK received a financial reimbursement document for me to sign. The rework cost for a set of hydraulic manifold is over 20,000 RMB. The explanation from the development department was that the client's development time frame was quite tight. As soon as the first version of the drawings arrived, the sales department asked the development department to speed up the work. However, halfway through, the client provided the second version of the drawings, resulting in rework. But the customer does not accept this money, the reason being that the first version of the drawings did not have the signature of their engineers. Similar situations have occurred in other hydraulic manifold manufacturers before, but at no cost. The cost of rework was also compared to other hydraulic manifold manufacturers. Our sales team went ahead without customer confirmation, citing the short lead time. In order to cooperate with customers and improve their satisfaction, the result of such reckless actions was over 20,000 RMB without anyone paying for it. When I lead sales, I often demand that sales use 3 good performances to demand ourselves: first, our service should be good, second, the manufacturing quality of hydraulic manifold manufacturer AAK should be good, and third, to make customers say we are good. However, our sales blindly pursue customer satisfaction and blindly cater to it. Similar incidents may occur frequently in other hydraulic manifold manufacturers, but AAK's 3 good performances are built on the process. In fact, there are many customer demands that are fake or even incorrect. At this time, as a professional hydraulic manifold manufacturer, we must dare to correct them. If the hydraulic manifold manufacturer only follows the customer's ideas, either the service provided by the hydraulic manifold manufacturer is blindly followed, or the hydraulic manifold manufacturer itself is not professional. Essentially, hydraulic manifold manufacturers should be more professional than customers, which require us to be experts in marketing, at least half of an engineer's sales. The most basic principle for hydraulic manifold manufacturers, whether they are developing or producing standard parts, is that only after signing and confirming can the next step be implemented. If you don't follow the process and do it well, the customer may not appreciate you. If you do it poorly, no one will pay for the additional costs. Customer satisfaction refers to the actual gain of a customer divided by their expected value. Sometimes, reducing a customer's demands can actually improve their satisfaction. In the sales process, if hydraulic manifold manufacturers dare to refuse customers improper requirements, sometimes in this process, most customers are reasonable. For the development of this hydraulic manifold, the sales seem to want to provide customers with so-called value-added services, but the value-added that customers do not receive becomes a mutual consumption. Simply pursuing so-called satisfaction can lead to satisfaction. Sometimes, on the contrary, the hydraulic manifold manufacturer will do whatever the customer says and do whatever they say. Firstly, blindly doing so will not have a good effect. Secondly, the hydraulic manifold manufacturer cannot earn the respect of customers. Thirdly, customers may feel that hydraulic manifold manufacturers are not very professional. Fourthly, customers may feel that you, as a hydraulic manifold manufacturer, lack processes or rules, and may look down on you. Therefore, I often say that sales do not come from seeking, but from requirements, or customers come here in admiration of their reputation. Hydraulic manifold manufacturer AAK, restrains itself with 3 good performances, and attracts customers with professionalism. AAK HYDRAULIC VALVES (723) 2023-11-26 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak72 , 3

This weekend, many parents in China are focusing on their children’s college entrance examination scores and choosing universities. In China, the students are in a rat race, and the parents are also in a rat race. Nowadays, it seems that the industry of integrated hydraulic cartridge valves is also in a rat race in China. But in my style, I need to understand why first, then start, and then move steadily, at an appropriate speed. Although the China integrated hydraulic cartridge valve manufacturers are in a rat race for price competition, I have increased material and processing costs, improved the quality of various elements of integrated hydraulic cartridge valves, extended the performance of integrated hydraulic cartridge valves, and strive to achieve higher cost-effectiveness of integrated hydraulic cartridge valves. British writer Oscar Wilde said: There are only two tragedies in life, the first one is not what I want; The second tragedy is getting what I want. How can getting something be considered a tragedy? Because after getting it, I found out there was a mistake, not what I really wanted. I see others pursuing it, and I thought I should pursue it too. After obtaining it, I realized that it wasn't what I wanted. Engaging in manufacturing is like crossing a bridge, where one can only move forward with one heart, cannot turn back, and there is no bypass. In China, it has become the obsession of this generation to have children attend a good university, even graduate school if possible. But why go to college? What is the use of taking this course? This question is rarely considered. Today, a colleague of an integrated hydraulic cartridge valve talked to me about his child's situation. His daughter is studying at a university in Shanghai, majoring in customs declaration. His meaning is, "Don't worry about her now, wait for her to go abroad and pursue a master's degree after graduation, and then she must come back to inherit my integrated hydraulic cartridge valve career. I was surprised to ask: The things your daughter learned are not closely related to your integrated hydraulic cartridge valve. Even if she graduates from high school and can start taking over the integrated hydraulic cartridge valve career, why waste this time? His answer is: always look good on face! In fact, when it comes to going to school, not only should children think clearly, but parents also need to understand: if others go to college, does it mean that your children also need to go to college? A few days ago, it was reported that a courier uncle worked as a courier for 15 years, sending his child to college. Eventually, after his son graduated from college, he inherited his father's business and became a courier boy. This kind of thing cannot be considered news at all, because it is becoming more and more common in real life. In this era where master's degrees are everywhere and doctoral degrees are abundant, my personal opinion is that there is no need to exchange money and youth for a dispensable degree. It should be the style of every parent to make career plans for their children, cultivate their professional skills, and make them self-sufficient. My children, if they can go to college, will be instructed to study history or philosophy. After graduation, they will first go to the workshop to tighten screws and work at the bottom level of integrated hydraulic cartridge valves for 3 years, and then engaged on the sales of integrated hydraulic cartridge valves. If you are not as powerful, if you want to get along well in society, you should take it step by step from the bottom. The sincerity of the strong inspires admiration in people. The sincerity of the weak makes people feel like you're a fool. In the integrated hydraulic cartridge valve industry, the same applies. Only when your manufacturing quality is strong can customers have admiration for you. AAK HYDRAULIC VALVES (613) 2023-06-25 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valves-aak613

Joakim, from Greece, got stuck when he purchased the hydraulic cartridge relief valve for the first time from China. One of their hydraulic motors needs a hydraulic cartridge relief valve. Joakim purchased it from a cartridge valve manufacturer in Ningbo. However, during the test run, the motor was damaged due to the abnormal pressure buffering function of the hydraulic cartridge relief valve, which was also blamed by the engineer. The original manufacturer was not confident to improve the pressure buffering function of the hydraulic cartridge relief valve. Joakim contacted me. I sent two customer cases of how AAK optimized the buffering function of the hydraulic cartridge relief valve to Joakim. On the second day, he asked AAK to make samples. After 30 days, AAK sent 8 samples of hydraulic cartridge relief valve. 2 weeks later, Joakim told me that the customer approved their motor, especially their engineer was very satisfied with the pressure buffer function of AAK hydraulic cartridge relief valve. In contrast, 2 advantages come out: the hydraulic system is stable and the motor performance is improved. AAK hydraulic cartridge relief valve, no impact trouble. The optimized hydraulic cartridge relief valve pushes the buffer spring at a constant speed, so that the time for the overflow pressure to rise from low pressure to high pressure remains constant. When the opening pressure is low, it gradually rises to the rated pressure, effectively reducing the impact of the moment when the motor rotates and starts. 1. AAK hydraulic cartridge relief valve is equipped with a differential valve spool with an orifice, and the annular bulge on the outer surface is used to connect the spring. 2. The buffer valve sleeve is inserted into the cavity of the differential valve spool. There is a buffer valve spool and an oil pipeline inside. There is a buffer valve spool throttle hole between the oil pipeline and the buffer valve spool. The two oil pipes inside the buffer valve sleeve are connected by two throttle holes. 3. The buffer valve sleeve and the buffer valve spool are sealed by the screw plug, and the two ends of the buffer spring are fixed in the buffer valve spool and the screw plug respectively. At the same time, the spring stiffness coefficient on the differential valve spool is greater than that of the buffer spring. AAK hydraulic cartridge relief valve, no impact, 2 advantages, you can also try it! https://www.aakindustry.com/info-de , tail/cartridge-relief-valves-aak524

Charles is a purchaser of a hydraulic pump company in the United States. He has done very well and occasionally inquires about the price with AAK HYDRAULIC VALVE. For the hydraulic check valves purchased some time ago, the production director found that 20% of the hydraulic check valves have parameters that do not meet the standard, so they must get new qualified ones to the workshop within 20 days, otherwise the delivery of customer order would be delayed. Charles asked the original manufacturer of the hydraulic check valve to complete the replacement within 2 weeks. The manufacturer is willing to replenish, but the production can be started only after 15 days, that is to say, it will take 30 days to replenish. Charles tried to find other suppliers of hydraulic check valves, and all replied that it could not be completed in such a short time. Charles realized that something was going to happen and began to look for a new hydraulic valve manufacturer, contacting factories one by one. Charles thought that AAK had also participated in the quotation of this hydraulic check valve, and the samples provided also met the requirements, but it was not considered because the quotation of AAK was slightly higher than that of other hydraulic valve manufacturers by 7%. Charles sent us an e-mail to ask whether the quotation of hydraulic check valve offered 6 months ago can be maintained, and if we can finish an urgent order of 100 hydraulic check valves in 10-12 days. I felt that this should be an order for hydraulic check valve encountered with problem. Charles told us the truth. About 20% of the hydraulic check valves produced by the original factory were unqualified and rejected by their production director. Now he must replenish them as soon as possible. General hydraulic valve manufacturers are unwilling to make such aftercare orders, but AAK HYDRAULIC VALVE don't think so, because AAK, as a production factory, has the same goal as the importer, that is to serve users well, so AAK is more willing to help customers and solve complaints from users together. Fortunately, the corresponding materials are in stock. Combined with the 24- hour production line, our production director conservatively estimates that it can be completed in 12 days. Charles asked us to start blanking now and the hydraulic check valve order will be issued tomorrow. After 10 days, 100 hydraulic check valves were successfully finished. Charles was very happy and quickly air freighted these hydraulic check valves to the United States. Thanks to the God, 100 hydraulic check valves finally arrived at their workshop in 20 days. Charles informed us by email that their engineers installed, debugged and tested AAK hydraulic check valves, which were all normal. The 7% higher price was also agreed by his boss. The boss was very amazed that AAK can deliver so quickly and the quality was better than that of the original manufacturer. AAK uses 1144 steel imported from the United States for this hydraulic check valve, which can be directly quenched. After heating to 850 ℃, it can be insulated for more than 10 hour, up to 58HRC. Usually, the ordinary factory can not control the heat treatment of this steel. The quenched 1144 steel is easy to cut, with fast cutting speed and little damage to the tool. Compared with 45 steel adopted by the original manufacturer, the production efficiency can be improved by 30%, and the strength and hardness are also stronger than 45 steel, but the cost is some high, and it is not easy to heat treat. Most hydraulic valve manufacturers dare not use this material, so most hydraulic valve manufacturers can not guarantee to complete the urgent order of this hydraulic check valve in 2 weeks. AAK hydraulic check valve, although 7% more expensive, not only has fast delivery time, but also satisfy you on the quality. You are welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-check-valve-aak131

These days, the epidemic has led to more fever cases. In a brewery in Brazil, its hydraulic station also "ran a fever”. AAK hydraulic cartridge relief valve was tailored to the case, with 3 tricks, helping Ledger's hydraulic system to be transformed successfully.   Ledger is from Brazil. Some time ago, the hydraulic system in their workshop continued to heat up, and the hydraulic cartridge relief valve of the system could not unload normally, so the pressure regulation failed. Their engineer needed to upgrade the hydraulic system and optimize the original hydraulic cartridge relief valve. The original manufacturer of the hydraulic cartridge relief valve said that it would take 2 months. The system upgrade was imminent. Ledger had to look for other hydraulic relief valve manufacturers. Ledger found me through the introduction of a local industrial product enterprise MRO. AAK is the supplier of the MRO, which purchase SUN hydraulic cartridge valves standard parts from AAK every month.   According to the drawings of Ledger's original hydraulic cartridge relief valve and the existing conditions of the hydraulic system, we were not sure about the root cause, so we asked Ledger to send us the original samples of the hydraulic cartridge relief valve. A week later, we found that the root cause of the system pressure failure was the spool of the hydraulic cartridge relief valve.   1. The accuracy of the valve spool is not enough. There is a 5% form and position tolerance and a taper, causing radial clamping. 2. The damping hole on the main valve spool is blocked, which causes that the oil pressure cannot be transmitted to the upper chamber of the main valve and the front chamber of the pilot valve, and the pressure adjustment of the main valve is lost.   I replied to Ledger that AAK had a plan to optimize the original hydraulic cartridge relief valve, and it would take 4 weeks. 2 weeks after AAK sent the optimized hydraulic cartridge relief valves, Ledger informed that after AAK hydraulic cartridge relief valve was used, the pressure of the system returned to the original 2MPa, the heating phenomenon disappeared, and various parameters met the system upgrading requirements.  AAK had a good idea. For this hydraulic cartridge relief valve, our scheme is as follows:   1. The valve spool adopts a tapered shoulder, and the small end of the shoulder faces the high-pressure area, which is conducive to the alignment of the valve spool in the inner diameter of the valve hole, ensuring the form and position tolerance, and avoiding the taper phenomenon.   2. Three pressure equalizing grooves with proper positions shall be opened on the surface of the valve spool. The depth of the annular pressure equalizing groove shall be the same, and the pressure equalizing groove shall be concentric with the outer circle of the valve spool. This process is difficult and most hydraulic cartridge valve manufacturers cannot afford it. AAK hydraulic cartridge relief valve, with this trick, solves the sticking of valve spool caused by radial imbalance force.   3. At the inlet section of the hydraulic cartridge relief valve, a welded integral high-strength filter screen and local turbulence self-cleaning function are set to reduce the impact of oil pollution on the normal operation of the hydraulic cartridge valve, and 100% eliminate the blockage of the damping hole.   AAK hydraulic cartridge relief valve, with tricks on processing, and the performance is also stable, welcome to try! https://www.aakindustry.com/info-detai , l/relief-valves-aak449

During Power transmission and control technology exhibition in Shanghai last year (PTC Asia), Italian ATOS company asked Richard to find a qualified hydraulic valve block supplier from Chinese hydraulic valve block manufacturers through the exhibition and supply for the branch in Malaysia. He spent a whole day at the exhibition. He went into almost every booth of Chinese hydraulic valve block manufacturers and selected more than 20 Chinese hydraulic valve block manufacturers. He communicated with us AAK for more than half an hour, and took some data with him. When he left, he said that AAK was the Chinese hydraulic valve block manufacturer he spent the most time today. After the exhibition, he would test samples of AAK hydraulic valve block. He would select 6 hydraulic valve block manufacturers from the more than 20 Chinese hydraulic valve block manufacturers he found. 1 week later, Richard sent us the sample drawings and working condition requirements of the hydraulic valve block. This hydraulic pump of ATOS should not only meet the international standards of ISO6020 and 6022, but also have a peak pressure of 450bar. At the same time, it has accuracy requirements for all surfaces of the hydraulic valve block. 2 weeks later, Richard received hydraulic valve block samples from 6 Chinese hydraulic valve block manufacturers. In general, there will be news within 2 weeks after the sample is sent. We asked Richard for feedback but just got reply of waiting for results. We thought it to be no results any more. 1 month later, Richard emailed that the chief engineer of the Malaysian branch advised that 3 of the 6 Chinese hydraulic valve block manufacturers met the requirements, but the accuracy of AAK hydraulic valve block was much higher than that of the other 2 Chinese hydraulic valve block manufacturers. AAK reassured them. The surface roughness of AAK hydraulic valve block flange reached Ra0 3, which is 30% more accurate than the other 2 Chinese hydraulic valve block manufacturers. At the same time, the perpendicularity between the screw hole of the pipe joint and its external fitting surface is Grade 8. The roughness of the mounting hole is Ra0 5, which is also 30% more accurate than the other 2 Chinese hydraulic valve block manufacturers. The surface roughness of O-ring groove is Ra1 5, while the other Chinese hydraulic valve block manufacturers are Ra5.0-6.5. These data of AAK have been benchmarked with their old hydraulic valve block suppliers in Germany. Richard quickly made a report to the boss according to AAK quotation and production time. The accuracy of the hydraulic valve block is comparable with that of the original supplier, but the price is 20% cheaper, and the lead time is 30-40% shorter. Richard wondered why among so many Chinese hydraulic valve block manufacturers, only AAK benchmarked the German factory? Before processing, AAK uses German COMET flaw detector to detect the blank of hydraulic valve block to ensure that the internal structure of the hydraulic valve block is dense and free of interlayer, trachoma and other defects. This step is generally ignored by other manufacturers. Then select the composite tool for processing, and combine two or more similar or different hole processing tools into one special tool. One tool can process the threaded bottom hole, 45°, 15°, R0.1 chamfering and external counterbore at the same time, and it can complete multiple processes such as drilling, expanding, reaming, spot facing and boring in the process of one machining. We don't know whether there is a second manufacturer mastering these technical essentials, maybe, maybe not. The boss was surprised that Richard found such a Chinese hydraulic valve block manufacturer and asked him to test an order for 500 hydraulic valve blocks. Richard asked AAK to guarantee on time delivery. The boss said that if it went well, he would be given a promotion and a raise. AAK is a trusted hydraulic valve block manufacturer in China. Welcome to contact us for cooperation. https://www.aakindustry.com/

It's almost the end of the year, and some hydraulic manifold manufacturers are lamenting that they can't make money because they are too honest. What I want to say is that any hydraulic manifold manufacturer who wants to make money must first have an honest heart, and then have a business acumen. But what's even more heart wrenching is that an honest heart and a business mind are two dimensions of things. Hydraulic manifold manufacturer AAK made a small profit with honesty. Because of honesty, it reduces the transaction costs for customers. I remember the first time I went to Frankfurt, Germany 13 years ago, at the subway station, I saw a somewhat special automatic ticket vending machine. I entered the "validity period" of my subway ticket by myself, and after purchasing it, I walked through the crowded crowd. However, I vaguely felt that I had forgotten something, until I took several subway stops before suddenly realizing that I had forgotten to check my ticket. Why did I come in without checking your ticket? In China, every subway has to check tickets and enter the station through a gate. However, there are no turnstiles here and no ticket inspectors have been seen. At the destination station, there are still no turnstiles or ticket inspectors. All passengers are heading out without any obstacles. Later on, I found out that subway stations in Germany are fully open. There are no gates, no electronic ticket check gates, and no manual ticket checks. In the bustling subway stations, there is not even a fence. The reason for doing this is because we believe in the goodwill of everyone and believe that you will consciously and truthfully purchase tickets. By relying on this method of "believing in the goodwill of the public and randomly checking the malice of the niche", the cost of public transportation is reduced. Behind the adherence to "rules" lies the spirit of contract, the essence of this story, which is to use honesty to reduce transaction costs. Both transactions between customers and hydraulic manifold manufacturers, as well as transactions between hydraulic manifold manufacturers, require overcoming the costs of "information asymmetry" and "lack of credit transmission". If you want to make money, you need to first help customers save money. Assuming a subway station spends 100,000 yuan annually on turnstiles and ticket inspectors. Assuming that hydraulic manifold manufacturer AAK can complete the "ticket inspection" at a cost of only 50,000 yuan. So AAK can say: just 60,000 yuan, I'll take care of it. The extra 10,000 yuan is the money that can be earned. The missing 40,000 yuan is the money saved for the customer. Of course, the reality will be much more complex than this simple math problem. However, hydraulic manifold manufacturers must have this logic, as long as you can reduce transaction costs, you will almost certainly make money from it. In China's manufacturing industry, whether you are a hydraulic manifold manufacturer or not, the era of good people making money is coming. This good person refers to an honest person. More and more stories are proving to us that people who are honest, trustworthy, abide by contracts, and adhere to their values can survive, and even live well. If there is any dividend in today's business world, I think it must be a value dividend. Hydraulic manifold manufacturer AAK has been constantly strengthening its business brain and adhering to an honest heart. Hydraulic manifold manufacturer AAK, with brain, heart, and integrity. AAK HYDRAULIC VALVES (722) 2023-11-25 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak72 , 2

At the beginning of this year, CATERPILLAR received an order from African customer for excavators with a delivery time of 2 months, which means that all accessories must be in place within 1 month, including 600 hydraulic cartridge valves. The production time for the factory is a little more than 2 weeks. The purchaser Peter sent the order information of the hydraulic cartridge valve to all the hydraulic valve manufacturers he contacted before at the first time. More than 20 hydraulic valve manufacturers said that they could not complete the order of the hydraulic cartridge valve in such a short time, and it would take at least 3 - 4 weeks. His supervisor was not satisfied with this delivery time and asked him to find a new hydraulic valve manufacturer. After the email was sent, there was basically no sound. Peter was very helpless and worried. Peter asked Mark for help. Mark emailed AAK HYDRAULIC VALVE to ask if AAK could produce 600 hydraulic cartridge valves in 2 weeks and CC Peter, and joking at the end of the email that if AAK HYDRAULIC VALVE could not complete the hydraulic cartridge valve order, then there is no need to waste time on looking for a new hydraulic valve manufacturer. According to the drawings they sent, AAK technical department found that this was very close to the hydraulic cartridge valve supplied to a Russian customer last year, so the time in the early stage of the production of the hydraulic cartridge valve was saved. After the price of the hydraulic cartridge valve was approved, the process data could be configured on the computer on the same day and the production could be carried out the next day. 2 weeks later, 600 hydraulic cartridge valves were delivered on time, which was the first of all the accessories purchased by Peter to arrive at the company's warehouse. Peter didn't expect that the hydraulic cartridge valve he was most worried about was the first to be completed. Peter appreciated the advice from Mark and was also surprised that AAK could complete this in 2 weeks, while his previous hydraulic valve suppliers needed 3-4 weeks. Mark told Peter: 1.AAK is his most trusted hydraulic valve manufacturer. AAK can surprise him every time when the hydraulic valve order is urgent. 2.AAK has a large amount of data storage and clear classification. For hydraulic valves with relevant data, they can use the most advanced UG / SOLIDWORK software and finite element analysis method to configure process data in 2 hours, which is 3-6 times faster than that of other suppliers. 3.AAK is equipped with advanced machine tools imported from Swiss, coupled with their own modified fixtures, the production speed is accelerated and man-made errors are avoided at the same time. After listening to the introduction from Mark, Peter realized that only a good hydraulic valve supplier can make his purchasing smooth. CATERPILLAR successfully completed this urgent order. The boss was very happy when he heard the news. For Peter, who was the first to complete the purchasing, the boss affirmed his purchasing ability and praised him at the meeting. Mark told me privately that Peter was very happy because his boss gave him a promotion because of his excellent performance this time. AAK hydraulic cartridge valve has reliable quality and guaranteed delivery date. We are a manufacturer good at and focused on hydraulic cartridge valves only. Welcome to have a small try! https://www.aakindustry.com/

Caltha is from Mexico and has been purchasing hydraulic valve blocks in Ningbo China for 5 years. AAK is also one of his suppliers of hydraulic valve blocks. At the beginning of this year, their old buyer left the company and Caltha began to be responsible for the procurement of hydraulic valve blocks. The first inquiry I received from Caltha was for hydraulic valve blocks. A week later, Caltha informed AAK that the price was 17% higher and she chose another hydraulic valve block manufacturer in China. Upon seeing this big price difference, I had to give up. 2 months later, Caltha emailed me asking if the hydraulic valve blocks quoted at the beginning of the year could be completed for 5 samples within 25 days. I felt Caltha's anxiety, and after communication, I learned that the hole accuracy of the hydraulic valve block produced by the original manufacturer was not up to standard. However, the manufacturer blamed some valve hole accuracy deviations on being normal, and using electric sealant could solve the leakage. Caltha didn't want to take any risks and came back to AAK I can understand Caltha's emotions, after all, their company is a loyal customer of AAK. Our technical team started to decompose the hydraulic valve block drawings immediately. Within 25 days, AAK sent 5 hydraulic valve block samples. 2 weeks later, Caltha informed AAK that their hydraulic manifold had been tested successfully. She asked me to wait for the batch order of hydraulic valve blocks. The processing of hydraulic valve block valve holes that the original manufacturer cannot handle mainly depends on the selection of equipment and the control of accuracy. The processing of this AAK hydraulic valve block adopts the Taikan Group Processing Center, which has 3 major advantages: 1. The machining is stable, and its spindle structure adopts high-quality mihanna cast iron, with stable movement. For the same batch of hydraulic valve blocks, using the same tool and processing program, the motion trajectory of the tool is the same, and its CNC program achieves computer control, which can avoid human error. Most hydraulic valve block manufacturers do not choose this equipment. 2. High precision. The valve hole accuracy is within 0.005mm, and the repeated positioning accuracy can reach 0.003mm, and precision correction and compensation can be carried out simultaneously using CNC software. 3. High production efficiency. The spindle speed can reach 24000 RPM, and it also has functions such as automatic speed change, automatic tool change, and other auxiliary operation automation. Compared to ordinary machine tools, the production efficiency is 3-4 times higher. AAK hydraulic valve block, fast processing, and guaranteed accuracy, you can also give it a try! AAK HYDRAULIC VALVES (612) 2023-06-24 https://www.aakindustry.com/info , -detail/hydraulic-valve-blocks-aak612

Bryson is a hydraulic customer from the UK. Recently, a batch of hydraulic cartridge valves he temporarily purchased were in trouble. Because the parameters from customer were not complete, he used the same model product recommended by the hydraulic valve manufacturer instead. During testing, the flow parameters were not equal. The rated flow of the hydraulic cartridge valve was smaller than the working flow and could not be used normally, which wasted more than 10 days and the delivery time was urgent. He contacted with more than 10 hydraulic valve manufacturers. For hydraulic cartridge valves of the same model, their rated flow setting is either smaller than the working flow or close to the working flow of the system. Bryson was very distressed that no hydraulic cartridge valve has a rated flow setting greater than the working flow. Bryson found AAK HYDRAULIC VALVE. From AAK website, he felt that AAK HYDRAULIC VALVE was a little different from other hydraulic valve manufacturers. With a try attitude, Bryson actively contacted us and sent us the product picture and product model of this hydraulic cartridge valve. He just emphasized that the rated flow must be greater than the working flow and asked us to recommend the hydraulic cartridge valve of the same model, there was no any parameter information. After careful comparison, AAK engineers sent pictures and drawings of a hydraulic cartridge valve of the same model. Bryson asked us to send the hydraulic cartridge valve samples as soon as possible. On the 3rd day after receiving the hydraulic cartridge valve sample, Bryson emailed to inform that the rated flow of AAK hydraulic cartridge valve can really meet the normal operation of their current hydraulic system. Bryson expressed his curiosity that the hydraulic cartridge valve model recommended by AAK is consistent with that recommended by other manufacturers. How can there be such a big difference in the rated flow setting? For the selection of flow specifications of hydraulic valves, the settings of each factory are different. If the rated flow of the valve is close to the working flow of the system, this situation is the most economical and cost- effective, and it is also the first choice of nearly 90% of hydraulic valve manufacturers. But there may be a problem, once the working flow in the hydraulic system exceeds the rated flow, it will cause hydraulic clamping and affect the hydraulic power. It will also have an adverse impact on the hydraulic system of the valve. To be safe, when all cartridge valves are produced, AAK will give priority to the maximum flow that may pass through the circuit where the hydraulic valve is located, and the setting of rated flow is greater than the maximum flow of operation, so as to ensure the normal operation of whole system, which is also the reason why most customers prefer AAK. After knowing this information, Bryson is more convinced that AAK HYDRAULIC VALVE is different from other hydraulic valve manufacturers. It has been more than 3 months since we shipped the last goods to Bryson. Today, 200 hydraulic cartridge valves are re-ordered. Bryson told me that since AAK hydraulic cartridge valve was used, there was no hydraulic clamping problem in the hydraulic system. Their sales increased by 30% compared with the same period. The boss was very satisfied with his procurement work. The rated flow setting of AAK hydraulic valve meets the flow requirements of each system. Welcome to try an order! https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-valves-aak130

Kadin is from Brazil. I know that he has purchased hydraulic cartridge valves from Ningbo for at least 2 years. The peers joked that his bargain just like cutting vegetables. But a batch of hydraulic pressure control cartridge valves made him suffer. The reason may be that the price was too low. In the second half of last year, they received feedback from customer that the excavator they sold, the stick and boom will fall a short distance after stop working. Their engineers judged that the load holding function of the hydraulic pressure control cartridge valve in the system was abnormal. The original manufacturer of the hydraulic pressure control cartridge valve said that it is too difficult to optimize the function due to its price. Kadin contacted other cartridge valve manufacturers and asked that the load holding function should be 100% guaranteed, and there was no result after a week. In this way, the original manufacturer did not care about the function of the hydraulic pressure control cartridge valve supplied, and the new manufacturers also ignored him. Kadin was in a hurry. Kadin sent me an email: Can AAK 100% ensure that the hydraulic pressure control cartridge valve can maintain its load? After several rounds of communication, I learned that he had trouble in purchasing hydraulic pressure control cartridge valves. According to the video of equipment abnormalities complained by his customer and the production drawings of hydraulic pressure control cartridge valve, I fed back AAK's plan. Kadin asked for samples. After 45 days, AAK sent 24 samples of hydraulic pressure control cartridge valves. 3 months later, Kadin emailed me that it was nearly 3 months since AAK hydraulic pressure control cartridge valve was used, the customer did not find that the stick and boom were falling. His boss planned to replace the original manufacturer's hydraulic pressure control cartridge valves with AAK’s. AAK 100% ensures that the hydraulic pressure control cartridge valve has load holding function, which depends on the structural innovation. During the load holding process, the conical valve spool and valve sleeve form a conical sealing structure under the pre-compression force of the return spring. This can effectively reduce the clearance leakage through the pilot spool spool and reduce the boom drift. 1. The hydraulic pressure control cartridge valve is equipped with a pilot sliding cone valve spool and a pilot oil passage. The valve body, valve sleeve and pilot spool valve spool cooperate with each other to form 6 chambers from left to right. There is a load oil circuit in the sixth chamber, which is connected with the fifth chamber through the first orifice and the second orifice. The fifth chamber is connected with the second chamber with the main valve body through the oil inlet hole. 2. The main valve body of the hydraulic pressure control cartridge valve has a one-way valve spool and a one-way valve spool spring chamber. The third chamber is connected with the spring chamber of the one-way valve spool through the throttling groove, and the spring chamber is connected with the second oil drain hole and oil drain passage. 3. The pilot control part provides the hydraulic pressure control cartridge valve with load holding relief pressure oil through the pilot oil passage, and the fourth chamber is connected with the oil drain passage through the first and second oil drain holes. When the load is maintained, a conical sealing structure is formed between the one-way valve spool and the main valve body. AAK hydraulic pressure control cartridge valve, 100% load holding function, is not only safe, you can also try it! https://www.aakindustry.com/info-detail , /pressure-control-cartridge-valves- aak523