Mechanical Hardware

Erasmus is from a hydraulic equipment company in Colombia. He has been purchasing smoothly, but a batch of hydraulic cartridge directional control valves stumped him. The loader sold by their company less than 1 year has been complained of shaking. During after-sales service, it is found on the site that the valve spool of the hydraulic cartridge directional control valve is stuck during operation, which is caused by the deviation of the valve hole accuracy. The original manufacturer advised that there should be not many pieces of hydraulic cartridge directional control valve was stuck and could be replaced, but there were more and more complaints later. The boss was not satisfied with Erasmus's purchase this time, asked him to replace the manufacturer of the hydraulic directional control cartridge valve, and requested that the service life of the valve be more than 18 months. Erasmus contacted more than 10 cartridge valve manufacturers. They either disliked the small quantity or needed 60 days of production. Erasmus became very anxious. Erasmus found AAK hydraulic valve in B2B and left a message to us: Can you produce the hydraulic cartridge directional control valve in 40 days with a service life of 18 months? I guess he encountered problem when he purchased the hydraulic cartridge directional control valves. After communication, I learned his dilemma in purchasing. According to the drawing of hydraulic cartridge directional control valve provided by Erasmus, this is not difficult, but the key is performance. 2 days later, we received the PO for the hydraulic cartridge directional control valve. Erasmus said that although the price of AAK hydraulic cartridge directional control valve was 20% higher than that of the original cartridge valve manufacturer, he still chose AAK because he valued the 18 months of service life. After 40 days, AAK sent 40 samples of hydraulic cartridge directional control valves. Last week, Erasmus informed by email that the AAK hydraulic cartridge directional control valve had been installed on the equipment for 1 year, and there was no customer complaint. Most surprising to his engineers, AAK valve hole accuracy reached 0.3μm, but the original directional control valve manufacturer is above 0.7μm. I told him, if no accident, there will be no worries for 18 months. AAK constantly improves the performance of the hydraulic directional control cartridge valve from 3 aspects. Although the price is 20% higher than that of peers, the service life is twice that of peers. 1. In processing, this hydraulic cartridge directional control valve uses OKK ultra precision machine tool of Japan, and its nano level numerical control system ensures that the processing accuracy can reach 0.01~0.3 μm. The precision of shape and contour is 0.003 ～ 0.1μm. 2. In terms of detection, the German small micropore diameter tester is used to detect the valve hole of each hydraulic directional control cartridge valve. 100% full inspection, and the measurement accuracy is within 0.1μm. 3. In terms of assembly, most of hydraulic directional control valve manufacturers adopt the selective assembly method. AAK uses the unified assembly method, and the assembly efficiency is twice that of peers. Not only fast, but also stable. Although the price of AAK hydraulic directional control cartridge valve is 20% higher than that of its peers, its service life is twice that of its peers. You can also try a small order! https://www.aakindustry.com/info-det , ail/directional-control-valve-aak433

Esperanza is from Spain and has over 1 year of procurement experience from hydraulic cartridge valve manufacturers in China, which has been relatively smooth. At the beginning of this year, Esperanza encountered difficulties in purchasing the CV08-20 hydraulic check valve. She purchased 120 pcs of CV08- 20 hydraulic check valves from an old supplier. After 4 months, 4pcs of the hydraulic check valves were found to have leaks, a less than 2% of leakage. The manufacturer of CV08-20 hydraulic check valves advised that he cannot guarantee that each hydraulic check valve has no leakage, but is willing to offer 4 pcs for free replacement. Esperanza's biggest concern is that the quality of this manufacturer is unstable, and they have to find another hydraulic cartridge valve manufacturer in China. Esperanza left a message on AAK website: Does AAK have CV08-20 hydraulic check valve? Can AAK guarantee that the first order of all 120 pcs of hydraulic one-way valves be leak free? I asked if she had encountered any leakage problem on the CV08-20 hydraulic check valve. After communication, we learned that the original hydraulic cartridge valve manufacturer cannot guarantee that each hydraulic check valve has no leakage. Although the CV08-20 hydraulic check valve is relatively conventional, for manufacturers, the competition lies in the stability of manufacturing quality and the details of subsequent quality inspection. As long as these 2 steps are strictly controlled, it is not difficult for all 120 pcs of hydraulic check valves to have no leakage. After 3 rounds of communication, the PO was confirmed. We shipped the goods at the end of March. Yesterday, Esperanza sent us an email. The CV08-20 hydraulic check valves shipped by AAK have been used for 6 months and no leakage has been found. They need to order another 260 pcs of CV08-20 hydraulic check valves and need the soonest delivery date. I told him that the service life of AAK valve is at least twice that of its original manufacturer. After production, each valve needs to be tested for pressure holding and leakage. The AAK inspection personnel first insert the hydraulic check valve body into the rubber tube of the manual pressure maintaining tester, then pinch the pressure punching airbag, wait until the pressure gauge pointer is at the standard pressure value position, stay for 5 seconds, and observe if there is any change in the pointer. If the pointer does not drop within 5 seconds, it indicates that the valve is holding pressure normally. Second, the hydraulic check valve is installed in the automatic pressure maintaining tester. After startup, the hydraulic check valve is compressed and the pressure value will be automatically displayed on the pressure gauge of the equipment. If the pressure value is fixed for 5 seconds and the pointer does not change again, it indicates that the hydraulic check valve pressure maintaining test has passed. Most hydraulic check valve manufacturers only do one testing on the valve for pressure holding performance, while AAK conduct testing in 2 steps. The first step is to test the valve body to ensure that there is no leakage during the installation process. The second step is to measure the pressure holding capacity of the entire valve, including the fit between the valve spool and valve cage. AAK hydraulic check valve, focuses on stable manufacturing quality, and has 2 tests for pressure holding to avoid leakage. You can give it a try! AAK HYDRAULIC CARTRIDGE VALVES (691) 2023-10-12 https://www.aakindustry.com/info , -detail/check-valves-aak691

Nijenhuis is from a hydraulic equipment company in the Netherlands and has been in the company for 8 years. 2 years ago, they sold a batch of hydraulic supports for coal mining. 3 months later, they were complained that the support was unable to rise. The technical team was surprised. The after sales personnel was shocked by the coal mining site condition, with long oil pipes, many sockets and poor dust prevention. There were pulverized coal, rock particles and iron filings at the bottom of hydraulic column cylinder and valve chamber. The after sales personnel saw the site and knew that the wear of the hydraulic cartridge pressure control valves had caused the leakage. The after sales personnel recommended that the customer improve the working environment and replace the hydraulic cartridge pressure control valves. This time, their engineer increased the filtration accuracy of the system, but the newly installed hydraulic cartridge pressure control valves went on strike again 5 months later. Their engineers blamed Nijenhuis for the poor wear resistance of the hydraulic cartridge pressure control valves purchased. Nijenhuis was helpless. The original manufacturer of the hydraulic cartridge pressure control valves said that most hydraulic valve manufacturers can only guarantee the service life of 3-6 months under such working conditions. Nijenhuis did not believe it and began to find new hydraulic valve manufacturers. A week later, more than 20 manufacturers of hydraulic cartridge pressure control valves were contacted online and offline, and the response was similar to that of the original manufacturer. Nijenhuis contacted me under the introduction of an old Dutch customer. When I saw the working video of the hydraulic support and the coal mining scene, I was not sure how long the life of the AAK hydraulic cartridge pressure control valves would be under that working condition. Nijenhuis seemed disappointed, thinking that AAK had no advantage over other hydraulic valve manufacturers. 3 days later, I told Nijenhuis that AAK could redesign this hydraulic cartridge pressure control valve and guarantee that it would be safe for more than 1 year. Nijenhuis probably thought I was fooling him, so he didn't reply to the email and I didn't follow up. 1 month later, Nijenhuis came to me again and asked about the probability of success. When he learned that AAK is 90% confident, it seemed that he saw hope again. After 50 days, AAK sent 30 samples of redesigned hydraulic cartridge pressure control valves. Last week, Nijenhuis sent an email saying that it has been 10 months since he used AAK hydraulic cartridge pressure control valves. The customer did not complain that the hydraulic support was unable to rise. Their engineers admired our little trick. For the design of hydraulic cartridge pressure control valve, AAK aims to solve the customer's pain points – working condition, while most hydraulic valve manufacturers only copy the standard parts. The working condition of the hydraulic support is special, and it is difficult to avoid coal dust, rock particles and iron filings. However, once these materials enter the hydraulic cartridge pressure control valve, any material can not resist wear for more than 1 year. Since the working environment cannot be improved, can it be isolated locally? AAK's little trick is that between the valve spool and the valve seat, there is a sealing pair as the support, and the contact surface of the sealing pair is consistent. Of course, the accuracy control here is the core, which most hydraulic valve manufacturers cannot achieve. The intervention of the sealing pair can not only isolate the pollution, but also reduce the friction between the valve spool and the valve seat, thus ensuring the service life of the hydraulic cartridge pressure control valves for more than 1 year. The service life of AAK hydraulic cartridge pressure control valve is 2-3 times that of its peers. You can also try one small order! https://www.aakindustry.com/info-det , ail/cartridge-pressure-control-valves- aak356

Krischnan, from Greece, has been engaged in the procurement of hydraulic valves for 6 years. At the beginning of the year, their hydraulic power unit used in military equipment needed to purchase hydraulic pressure control valves. Krischnan selected a supplier who has cooperated for 4 years to sample the hydraulic pressure control valve, which is required to be leak free and free of jamming. 1 month later, the accuracy of the hydraulic pressure control valves produced by the original manufacturer did not meet the equipment requirements, but this has already been the manufacturer's limit. Krischnan can only re select the manufacturer of the hydraulic pressure control valves and specially note with specific accuracy requirements that the cylindricity of the inner hole of the valve cage needs to below 2μm, the surface roughness is Ra0.15. He contacted more than 10 hydraulic valve manufacturers in 1 week, and only 2 manufacturers were willing to sample, but they still did not meet the equipment requirements. More than 2 months of time wasted, Krischnan became very anxious. Krischnan found AAK at Google and left a message asking whether there were hydraulic valves for military equipment. I was not sure about his purpose, so I gave an irrelevant answer that AAK had supplied hydraulic valves for aerospace 4 years ago. Krischnan sent the drawing of the hydraulic pressure control valve the next day, emphasizing that it was used for military equipment and reminding the machining accuracy and geometric accuracy. He seemed to be afraid of another failure, stressed and reminded again and again. 3 days later, I told him that we are 90% confident to be successful. If AAK also failed on this hydraulic pressure control valve, he would not need to go around in Ningbo again. The next day, Krischnan paid the development fee. After 45 days, AAK sent 30 samples of hydraulic pressure control valves. At the beginning of last month, Krischnan said in an email that although the time of AAK samples was longer than that of other hydraulic valve manufacturers, the AAK hydraulic pressure control valve was recognized by the engineer and the equipment commissioning was smooth. At the same time, he also sighed: after 3 rounds, only AAK was found to be able to produce the hydraulic pressure control valves that can be used in military industry. AAK focuses on 3 points to control the accuracy of the valve hole in the valve cage of the hydraulic pressure control valves: 1. The valve cage inner hole processing process was re optimized in 6 steps: drill the top hole with deep hole drill, vacuum quenching, rough honing, semi fine honing, artificial aging treatment, fine honing, and the process parameters were reset. Most manufacturers of hydraulic pressure control valves can only achieve 3 steps: vacuum quenching, rough honing and fine honing. 2. As for the details of honing, 0.04mm full honing allowance shall be reserved during rough honing of inner hole to lay a good foundation for subsequent fine honing and grasp the stress generated by honing. Here, skill is required, which is also a key step of accuracy. 3. More attention is paid to fine honing. An oilstone made of cubic boron nitride is used for fine honing. After fine honing, the cylindricity of the inner hole of the valve cage is below 1.5μm and the surface roughness is below Ra0.1μm. AAK hydraulic pressure control valve, 6-step optimization, 2 detailed points, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-pressure-control-valves- aak355

Our old Greek customer, Evander, emailed me in November last year that he sent me a sample of hydraulic cartridge relief valve, and stressing that it was not his, but one of his partners, Ptolemy, and also attached Ptolemy's contact information. After receiving the sample and communicating with Ptolemy, we learned that the hydraulic cartridge relief valve was produced by a local cartridge valve manufacturer in Greek and installed in their hydraulic cylinder, which was unstable. Their engineers said that the root cause was the high back pressure of the hydraulic system and the insensitive opening of the hydraulic cartridge valve. We can't determine the hidden dangers of the hydraulic cartridge valve just according to the original sample. I suggested Evander sending us the video of abnormal hydraulic cylinder, the drawing of hydraulic cartridge valve, and the schematic of the system. After discussing, AAK engineers advised that the problem can only be solved by reducing the opening back pressure resistance of the hydraulic cartridge valve. Perhaps because of Evander's endorsement, Ptolemy paid the development fee on the second day. I have always believed that for industrial products such as hydraulic cartridge valves, it is difficult to get the order without trust. With trust and reliable manufacturing quality, it is easy to get the order. After 40 days, AAK sent 20 samples of hydraulic cartridge valve. Yesterday, Ptolemy emailed me that AAK hydraulic cartridge relief valve was used on the hydraulic cylinder. The prototype operated stably and the hydraulic cartridge valve opened sensitively. AAK hydraulic cartridge valve is stable and sensitive under high back pressure. We optimized the structure of the original hydraulic cartridge relief valve from 3 aspects. 1. The valve sleeve of the hydraulic cartridge relief valve has an oil inlet cavity, and the outer circle of the valve sleeve is provided with a plurality of annular through holes as oil outlet, and oblique holes are set to control the oil outlet. 2. The middle part of the main valve spool is provided with a small hole connecting the oil inlet cavity and the inclined hole, and the main valve spool can slide in the valve body to form a spring cavity that is relatively closed to the oil inlet cavity, and the spring cavity is equipped with a pressure regulating spring. 3. The left end of the valve body is installed with an adjustable rod that can be rotated and retracted and has a lock nut. The pressure regulating spring on the adjusting rod is connected to the main valve spool. The outer diameter of the right end of the valve body is provided with a sealing groove to place the sealing ring group. Two sealing grooves are set on the left side of the external thread of the valve body, and the sealing ring group is placed to seal the connection with the socket to prevent oil leakage. The optimized AAK hydraulic cartridge relief valve equalizes the pressure difference on both sides of the valve spool through the small hole on the valve spool, reducing the back pressure resistance of the hydraulic cartridge relief valve opening. This makes it easy to open and enhances the sensitivity and stability of the hydraulic cartridge relief valve. AAK hydraulic cartridge relief valve, with high back pressure circuit, is also sensitive and stable, you can also try it! https://www.aakindustry.com/info-detail , /cartridge-relief-valves-aak504

Today, AAK posted a Pilot-Operated Pressure Reducing Valve benchmarking SUN Hydraulics' PBDB series, and we have developed these sub categories: E-PBDB- LAN; E-PBDB-LBN; E-PBDB-LNN; E-PBDB-LQN; E-PBDB-LWN. They also have the Viton seal options. The Pilot-operated, pressure reducing valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, allowing circuits with multiple pressure requirements to be operated using a single pump. The Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis. Pilot operated reducing, reducing/relieving valves by nature are not fast acting valves. For superior dynamic response, consider direct acting valves. If pilot flow consumption is critical, consider using direct acting reducing/relieving valves. In the past 12 months, AAK have received 6 inquiries and 3 orders from customers in Brazil, Turkey and Germany. The selling points of this pilot operated pressure reducing valve are: 1. Control Pilot flow: 7 - 10 in³/min, Benchmarking SUN 2. The service life is 2 times that of other domestic hydraulic valve manufacturers in China Technical parameters of AAK E-PBDB Hydraulic Pilot-operated, pressure reducing valve: Max. Operating Pressure: 350 bar (5000 psi) Capacity: 10 gpm (40L/min) Control Pilot Flow: 7 - 10 in³/min. Cavity: T-11A For this pilot-operated pressure reducing valve, benchmarking SUN PBDB series, you can also try it out. AAK HYDRAULIC VALVES (589) 2023-05-22 https://www.aakindustry.com/info , -detail/pressure-reducing-valves-aak589

The supplier who have cooperated for 4 years have failed to solve the problem of valve hole deformation caused by the assembly force of hydraulic flow control valve for 4 times of proofing. After AAK changed the process, not only did the accuracy of the hydraulic flow control valve hole reach the standard, but also the operating efficiency of hydraulic system equipment was improved by 5%. This is the first time for Thomas to receive such a surprise from a Chinese hydraulic valve manufacturer. Thomas is from a hydraulic company in the United States. He has been in contact with me for 3 years. In addition to quoting prices and sending hydraulic valve samples several times, he has never placed an order. I laugh at myself that fate has not come. 3 months ago, a PO for hydraulic flow control valve worth more than 20,000 US dollars was sent to us suddenly, which scared me. It was turned out that a supplier who had cooperated with him for 4 years, could not solve the problem of this hydraulic flow control valve even after 4 times of proofing. Under the assembly force of 90N • m * 4, the deformation of the valve hole reached 0.013mm, which did not meet their accuracy requirements, and the original manufacturer had to discuss the delivery date again because of the several failures of the hydraulic flow control valve samples. Thomas realized that the manufacturer had to be replaced, so he contacted AAK. Thomas said that he had been tracking AAK for the past 3 years because his company required that any new supplier should have a 3-year investigation period. Every time AAK sent samples, he would be surprised. He also looked forward to the surprise of the hydraulic flow control valve this time - the sample time and the sample quality. He also reminded me that several suppliers have given up to try directly before he chose the current supplier. I realized that this hydraulic flow control valve PO was a hot potato. If it was messed up, the fate of 3 years would be zero. Is it a surprise or a fright? We have to fight. The AAK technical team separated the drawings of the hydraulic flow control valve step by step and realized that it was really difficult to process this hydraulic flow control valve, but they also had ideas. 3 weeks later, the master of the sample fed back that the deformation of the hydraulic flow control valve bore was still not up to the standard. Moreover, excessive wear of calipers and oilstones leads to low honing efficiency, and the scrap rate reaches 3%. Even if the sample is successful, the mass production is also a hidden danger, and the production process must be changed. After 5 days, the master tried to pre assemble the hydraulic flow valve body and left it for 2-3 days. Before honing, rough reaming with diamond reamer is used to correct the roundness deviation of the valve hole of hydraulic flow control valve due to assembly preload and creep. The whole honing time is shortened from 210s to 60s. With the improved production process, the production efficiency was increased by 150%, and the scrap rate was reduced to 0.5%. After 5 weeks, 12 hydraulic flow control valve samples were sent out. 2 weeks later, Thomas informed by email that the technical parameters of AAK hydraulic flow control valve had been confirmed, especially the accuracy of the valve hole, which surprised him. For the hydraulic flow control valve that the original manufacturer could not fix for 4 times, AAK was successful at one time. What made his engineers more happy was that the operating efficiency of the hydraulic system of the equipment equipped with AAK hydraulic flow control valve increased by 5%. This is the first time to receive such a surprise from a Chinese hydraulic valve manufacturer. AAK hydraulic flow control valve brings only pleasantly surprise, not frightening surprise. You can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak354

Recently, hydraulic manifold manufacturer AAK received a new message from Mike, who works at a listed company in the United States. According to his introduction, they usually purchase hydraulic cartridge valves from India, produce manifold blocks from local hydraulic manifold manufacturers in the United States, and then assemble them for sale to end customers. 2 years ago, they attempted to work with hydraulic manifold manufacturers in China. Recently, a hydraulic manifold with valve hole 2μm accuracy was still not confirmed yet with any hydraulic manifold manufacturer after over 1 month, which made him very anxious. After communication, we learned that Mike had tested samples at 3 hydraulic manifold manufacturers, all of which were not approved due to the 2μm accuracy valve hole. I told him that the key to this accuracy lies in the subsequent precision machining. I also asked him curiously why he chose India instead of purchasing from Chinese hydraulic cartridge valve manufacturers. Mike said that 8 years ago, their cartridge valves were produced by the preferred Chinese hydraulic cartridge valve manufacturer, but after being disappointed several times, they chose an Indian hydraulic cartridge valve manufacturer. I felt a bit under pressure. If the 2μm accuracy valve hole can not be achieved by hydraulic manifold manufacturer in China this time, will Mike also choose Indian hydraulic manifold manufacturers in the future? Half of AAK's American customers are abandoning Indian hydraulic cartridge valve manufacturers in favor of AAK. If AAK solves Mike's difficulties of the manifold this time, I believe AAK will also be his new supplier of hydraulic cartridge valves in China. I sent him a video about precision machining of valve holes. Most hydraulic manifold manufacturers choose forming tools for the machining of valve holes, which are formed by machining centers in one go, neglecting the precision machining process of valve holes, and affecting the accuracy of valve holes, this kind of process is no longer feasible for 2μm accuracy valve hole. Mike requested AAK to make two samples and they were sent out 35 days later. For this 2μm accuracy valve hole, AAK use Germany's Gehring high-precision CNC honing machine for precision machining. Our first step is to activate the equipment's online measurement system to detect the precise position of the fixture and avoid precision deviation caused by residual debris. This small detail is almost ignored by the majority of hydraulic manifold manufacturers. During the honing process of the valve hole, the travel speed reaches 60m/min and the detector is installed. Hydraulic manifold manufacturer AAK, has targeted process design, and its own small details. You can also give it a try! AAK HYDRAULIC CARTRIDGE VALVES (690) 2023-10-10 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak69 , 0

Yesterday, my old friend Henry left a message to me: Why can't some Chinese hydraulic valve manufacturers understand my logic? This is not the first time I have heard such complaints from overseas guests. There are also many hydraulic valve peers who often joke about what the foreigner thinks. Is he from the moon?   Without same worldview as you, of course, he is not on the same channel as you. Look at the world first, then you can have a world outlook. As the old saying goes, reading thousands of books and traveling thousands of miles means reading a group of people, reading a city or a country, not looking for similarities but feeling different. The more places you travel, the more you can understand how different people are. If you regard your little insight as 100% correct logic, how can you understand the completely opposite logic? Different countries and people have completely different views and ideas on a matter. One time, when I was settling accounts for a US$93.00 bill at a supermarket in Vancouver, Canada, I used to pay US$100.00 and US$3.00, and I think you can give me 10 dollars. But the cashier looked at me in surprise, kept saying more, and then firmly returned US$3.00, and then pushed the $93.00 goods to me. After a long time of searching, he gave me the rest of the change US$7.00.   It was very shocking at that time. Later, I gradually understood that the way they changed their change was like this. It turns out that there are great differences in the way of thinking and living habits between people in this world. What you take for granted is completely incomprehensible to others. What you take for granted is actually just habit. Many American universities have no doors. You can drive directly to the downstairs of the dormitory when you drive. Stanford and Harvard have no doors. In China, there are not only doors, but also gatekeepers. In Seattle, I made another mistake and waited for half an hour on the street. There was no taxi. It turns out that most Americans have cars. Taxis don't run empty on the road. You need to make an appointment. In China, taxis are readily available. If you stay in a place for a long time, you will naturally bring your habits here, and you should think that every place is the same. But New York is different. Taxis are everywhere on the streets.   The subway in Munich, Germany, has no ticket checker or gate. In China, there will be a gate to check tickets when you take the subway. There is no gate and no one checks in. Is it possible to enter without buying a ticket? It has a system that ticket inspectors will randomly check on the subway. If it is found that you have not bought tickets, you will be severely fined. Suppose the subway ticket is 3 dollars. If you are drawn, you will be fined 300 dollars, which will also affect your social reputation. It uses the heavy punishment system to stop all people who are not aware of it, instead of using the gate. This logic is a strict punishment system in the late stage, but the control cost in the early stage is low. Different countries have different cultures and different systems. The more you see, the more you can understand the difference, and the more inclusive you are, rather than complacent in your own logic. I don't agree with you because we have different beliefs. I support you because I understand your faith. If you have this attitude, you will have a different world outlook. The significance of travel is not to find similarities, but to feel different. Every time you travel, you look at the outside world with insight, look at your heart with reflection, and then bathe in the differences of the world. Even if life is boring, don't forget to go far away. Even though hydraulic valve customers are all over the world, don't forget the different world outlook. AAK Hydraulic Valve, walk into your world view, in your logic. https://www.aakindustry.com/info-det , ail/hydraulic-valve-manufacturers-aak353

Santiago is from Spain. He has been a purchaser of the company for 3 years. His boss trusts him very much. Unexpectedly, a hydraulic counterbalance valve overturned him. In the second half of last year, one of their hydraulic cylinders was complained by the customer because of shaking. The engineer judged that the hydraulic counterbalance valve used was abnormal, but the reason was unknown. After receiving the defective hydraulic counterbalance valve, the original manufacturer found that the internal pressure spring had failed, resulting in the slow response of the hydraulic counterbalance valve. This is the best pressure spring of the original manufacturer, but it still could not withstand the impact of 450bar high pressure and high frequency. Santiago had to change the manufacturer of the hydraulic counterbalance valve. After more than a week, no manufacturer was able to guarantee that the valve would not fail under the high pressure of 450bar for more than 1 year. It had been nearly 2 weeks, and there was no solution to customer complaints. Santiago was under great pressure. Santiago accidentally found AAK Hydraulic Valve in Google. He left a message on the AAK website asking whether the pressure spring of the hydraulic counterbalance valve would not fail for more than 1 year under the high pressure and high frequency working condition of 450bar? According to his drawings and working conditions, I told him that if the German HAWE was used, it would be 100% OK, but the quantity was too small, and HAWE would not necessarily accept it, and the cost was not low. AAK has a similar hydraulic counterbalance valve. Let's see if it can be a substitute first? 3 weeks later, Santiago informed that the AAK hydraulic counterbalance valve could be installed with their hydraulic cylinder and operated normally. But he seemed worried that it would not last long. I told him that Germany HAWE is the first brand of hydraulic valves in the subdivision field of high pressure resistance. The function of AAK hydraulic counterbalance valve benchmarks HAWE, which has been shipped for many times. The fact has proved that there is no repair report for 1 year, and the pressure spring can not lose efficacy for more than 1 year. Why dare I say so? The pressure spring of AAK hydraulic counterbalance valve is made of 60Si2CrVA alloy steel. At the same time, in combination with special heat treatment process, 60Si2CrVA pressure spring steel is heated to 860 ° c, kept for 20-40 min for austenitizing, and then subjected to short-term high-temperature water cooling quenching to room temperature. The comprehensive properties of the treated 60Si2CrVA spring steel have been improved by at least 2 times, especially the strength and toughness of the pressure spring, which quality far exceeds most springs. Most hydraulic valve manufacturers of hydraulic counterbalance valves may be able to find good materials, but they cannot do well in heat treatment. Yesterday, Santiago sent an inquiry for another high pressure resistant hydraulic counterbalance valve and told me that the last hydraulic counterbalance valve benchmarking HAWE had been used for almost 1 year, as promised by AAK, and there was no complaint, so his boss specially requested that AAK should be the first choice of the inquiry and sample for all high pressure resistant hydraulic valves. I know that AAK has conquered another high-quality customer by virtue of its manufacturing quality. AAK hydraulic counterbalance valve, benchmarking HAWE, no failure for more than 1 year, you can also have a small trial! https://www.aakindustry.com/info-det , ail/hydraulic-counterbalance-valves-aak352

Arno comes from England. They have a special hydraulic manifold block, which includes 13 groups of M32 threaded holes, and all of them are stepped holes. At the same time, there are cross holes, straight holes, and bypass holes. The hole size is required to be more than 8. Compared with the hydraulic manifold blocks with 10 groups of normal threaded straight holes, it is not only complex in structure, but also 20% higher in precision. Arno knew that it was difficult, so he arranged 3 hydraulic manifold block manufacturers for proofing, which lasted 60 days, but all of them failed to meet the standard. This is a test order of hydraulic manifold block from an old customer. Arno wants to struggle again. Due to time constraints, he does not dare to use a new hydraulic manifold block manufacturer. His old hydraulic manifold block supplier is also unreliable. This makes Arno, who has eight years of procurement experience, a little overwhelmed.   When Jone introduced Arno to me, I had a hunch that this hydraulic manifold block was not simple. Because the PO of hydraulic manifold blocks given to me by Jone is a challenge every time. AAK engineers pondered over the drawing of hydraulic manifold block sent by Arno, and it is really difficult to process, with very high precision. There are not only many pore systems, but also many deep holes, more than 20 groups of Φ3、 Φ4 deep holes, with a length diameter ratio greater than 25. For M32 threaded holes of stepped holes, the coaxiality between holes is required to be 0.02mm, and the coaxiality between threads and holes is required to be 0.045mm. This complex pore system structure is like the distribution of the nervous system of the human brain. Doctors without more than 10 years of experience in brain surgery may not be confident to operate on the operating table.   AAK technical team, after 3 days of internal research and discussion, the plan has been worked out, and our chief engineer will handle the knife, starting from the production drawing of the hydraulic manifold block. However, I replied to Arno that AAK was only 90% sure that the sample of this hydraulic manifold block was successful, and the cost was not low. Maybe Arno hesitated and didn't give any reply for 3 days. On the fifth day, AAK received the development fee paid by him. He mentioned that Jone told him that when AAK said it was 90% sure, it means that there was basically no problem. After 20 days, AAK sent 4 hydraulic manifold block samples. 4 weeks after sending the samples, Arno placed a PO for hydraulic manifold block worth 80,000 US dollars. He also told me that the hydraulic manifold assembled with AAK hydraulic valve block was successfully debugged, and the customer was very satisfied. He emphasized that the quality of the batch order must be stable. I told him that as long as your customer is satisfied with the quality of the hydraulic manifold block sample, there will be no worry about the quality of the batch order, because the process and processing methods adopted by AAK guarantee the stability first:   1. For special hole system processing, AAK follows the principle of small hole priority, customizes alloy fried dough twist drill tools with large chip holding groove and good toughness, and solves the problem of small hole system processing by using the drilling cycle technology in combination with the processing method of "high speed, snack knife depth, frequent tool withdrawal". 2. For M32 threaded holes, the combination of rough and finish machining is adopted, and the thread milling cutter is used to replace the alloy boring cutter used by nearly 90% of hydraulic manifold block manufacturers for milling, so as to avoid the problem of coaxiality out of tolerance caused by manual tapping due to tap deflection. 3. AAK has designed a group of coaxiality gauges for measuring the thread hole system to assist in machining, ensuring the datum requirement of coaxiality of 0.02mm, and further improving the dimensional form and location tolerance accuracy by nearly 20%.   AAK hydraulic manifold block is not afraid of the pore system like cranial nerves. Welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-manifold-blocks-aak431

Evander comes from a Greek hydraulic equipment company and has been in the company for 5 years. At the beginning of the year, the hydraulic stretching machine they developed needed to purchase hydraulic directional control valves with large length diameter ratio. He chose to work with a supplier for 3 years to try, and the manufacturer reported that the length diameter ratio of the valve hole of the hydraulic directional control valve is 20:1, and the valve hole Ra is not more than 0.3. He is not confident, but he can try. 2 months later, the test run was not smooth. Indeed, the hydraulic direction control valve was slow to respond, and the manufacturer surrendered. Evander contacted more than another 10 hydraulic valve manufacturers for this hydraulic directional control valve, but all of them are not 100% confident of doing this valve with the length diameter ratio of 20:1. 10 weeks have passed, but the manufacturer has not been determined yet. Evander is very worried. Evander saw an article of AAK on B2B about "Hydraulic relief valve with length diameter ratio of 11:1" and left a message to AAK: Is AAK confident to do a hydraulic directional control valve with the length diameter ratio of 20:1 and Ra is not more than 0.3? My reply: It's right to ask AAK about the length diameter ratio. We have produced 25:1 hydraulic check valves in mass production. It is suggested that he send his drawings of hydraulic directional control valve and AAK directly make samples. If the length diameter ratio is not in accordance with the standard, the development cost will be returned. Evander is happy and nervous. He is happy that the manufacturer has been determined. He is afraid of wasting time. Evander waited for 4 weeks in fear, until his engineer told him that the processing size and accuracy of the AAK hydraulic directional control valve were up to standard, and the test machine was also successful, and Evander was completely relieved. I told him that the hydraulic directional control valve with deep hole is difficult to process. The greater the length diameter ratio, the more difficult it is. Even if it is processed, the precision is a hidden danger. This is also the reason why many hydraulic valve manufacturers surrender. AAK adheres to the size accuracy, geometric accuracy and surface roughness of the valve hole, and optimizes the processing technology. We do in the following way, it is difficult for the general hydraulic valve manufacturers to imitate. 1. According to the blank condition, steel properties, length diameter ratio, determine the drill and fixture, which requires experience and skill. In the 6 procedures of "drilling - expanding - boring - reaming - rigid boring reaming - diamond reaming", the cutting amount and working temperature are strictly controlled. 2. The rigid boring reamer is equipped with a guide at the front and back, ensuring straightness, especially the internal cooling chip removal, ensuring the surface finish of the valve hole. 3. For the processing of this hydraulic directional control valve, the tool change frequency is 3 times of the conventional one, the geometric accuracy of the sample is 0.002mm, and the surface Ra0.2. AAK hydraulic directional control valve, has unique trick on valve hole processing, high precision, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-directional-control-valves- aak35 , 1

When negotiating prices with customers, AAK hydraulic valves often encounter a problem that new customers often think the price is expensive. Due to the different quality of hydraulic valves, the price difference is some big. Sometimes, when we encounter customers who only focus on the price, we have no choice. On the weekend, I went to the decoration market and wanted to buy some paint and paint the background wall. Passing by the Dulux Paint Shop, I saw a conversation between a young sales girl and a middle-aged man. I stopped, listened carefully, and learned a good lesson. Dulux paint is definitely expensive. It's a big brand, and many customers think it's expensive, but this young girl says it's cheap. The young girl is saying, "Your paint usage is 400 square meters. If using other small brands paint, it would be around 24,000 yuan, but if using our Dulux paint, it would cost 48,000 yuan, which is twice as expensive. I also think it's expensive, but in the end, I think it's cheap." This is the opening phrase of this young sales girl, which is very organized. The young girl continued, 'Your renovation will last for 15 years, which means you only need to spend 8 yuan per day to buy over 400 square meters of Dulux brand paint.'. The young girl is very smart and converted the high price of 48,000 yuan into 8 yuan. A principle of 'calculating small accounts, calculating breakdown accounts'. The middle-aged man's expression suddenly became relaxed and he also nodded. The young girl continued, 'Dulux's paint is free of methanol and harmful substances. Spending an extra 4 yuan per day only is to earn health, especially beneficial for your child’. The benefits of Dulux paint were presented to the user, and the middle-aged man nodded again. The young girl continued, 'You have a luxury home worth millions of yuan, and choosing a big brand paint is certainly the best match. You have already spent 10 million, still care about this 48,000?’ In less than half an hour, the middle-aged man paid the deposit, signed the contract, and left. I admire the young girl's move, with the knife in place. On the way back, I pondered the young girl's bargaining skills, which could also be extended to the AAK hydraulic valves. When customers feel that AAK price is expensive, we need to calculate breakdown accounts, such as the service life of AAK hydraulic valves, and discuss the service life with them. For example, if the service life of hydraulic valves in the same industry is 1 year, and the service of AAK hydraulic valves can reach 2 years, after the price is evenly divided to every day, the cost-effectiveness of AAK hydraulic valve prices is shown out. Although AAK hydraulic valves are 20% more expensive, their service life is twice that of other similar valves produced by other hydraulic valve manufacturers in China. AAK HYDRAULIC VALVES (588) 2023-05-21 https://www.aakindustry.com/info , -detail/hydraulic-valves-aak588

Today, we’d like to introduce another Pressure Compensated Proportional Flow Regulator Cartridge equivalent to HydraForce standard part PV70-30. It is a solenoid operated, pressure compensated, spool type, normally closed, priority type proportional flow regulator. The features of this proportional priority flow control valve: Excellent linearity and hysteresis characteristics. Hardened spool and cage for long life. Optional coil voltages and terminations. Efficient wet-armature construction. Cartridges are voltage-interchangeable. Unitized, molded coil design. Coil waterproofing standard. Manual Override option. A customer in Brazil placed a test order for 10 pcs last June in 2022, along with PV72-30. After 1 year of testing, it proves that the function and performance of AAK hydraulic proportional priority flow control valve benchmarked the quality of HydraForce PV70-30. Today, we received their re- peat order for 1,000 pcs, same qty as the repeat order placed for PV72-30 in July. AAK hydraulic solenoid operated proportional priority flow control valve 2 advantages: 1. Internal leakage: 197ml/min Max. at 207 bar (3000 psi), benchmarking HydraForce 2. Its service life is 2 times that of its peers Technical parameters of AAK E-PV70-30 hydraulic solenoid operated proportional priority flow control valve: Max. Operating Pressure: Port 1: 240 bar (3500 psi); Port 2 and 3: 207 bar (3000 psi) Flow rating: 26.5 lpm (7.0 gpm) Regulated, range A, 2-ported 17.0 lpm (4.5 gpm) Regulated, range B, 2-ported 30.3 lpm (8.0 gpm) Regulated, range A, 3-ported 17.0 lpm (4.5 gpm) Regulated, range B, 3-ported 49.2 lpm (13.0 gpm) Maximum input, range A, 3-ported 26.5 lpm (7.0 gpm) Maximum input, range B, 3-ported Internal Leakage: 197 ml/min (12 in³/min) At port 3 with at port 1 (port 2 closed) 207 bar (3000 in³/min) Cavity: VC10-3  The newly launched AAK E-PV70-30 hydraulic solenoid operated proportional priority flow control valve, benchmarking HydraForce PV70-30, has been approved by customer in Brazil after 1 year of testing. You are welcome to try it out. AAK HYDRAULIC VALVES (689) 2023-10-09 https://www.aakindustry.com/info , -detail/proportional-valves-aak689