Valves

Surprisingly, within 3 months, Suker issued 3 batches of solenoid valves to AAK. Suker came from Türkiye and started to develop Chinese solenoid valve manufacturers last year. I received his inquiry about solenoid valves on December 22nd in 2022. Suker said that he has been following AAK for a while and wants to make AAK the preferred partner for Chinese solenoid valve manufacturer.   Our email communication was very smooth, except for payment, there were no obstacles. His first solenoid valve order amount was not big, which was over 6,000 US dollars. He needed payment terms of NET 30 days, but I directly refused. Then he requested for 30% deposit, I still refused and insisted on a 100% T/T. After more than a week of suspension, he suddenly said he would accept AAK's payment terms. I thought that after this order, he would not place any more order with AAK due to payment terms, because some customers naively believe that it is easy for them to find a Chinese solenoid valve manufacturer. Although I have a good impression of Suker, if I really lose this customer due to payment terms, it's not sad. With so many solenoid valve customers around the world, it's normal to loss several customers.   AAK, as a Chinese solenoid valve manufacturer, often ponders a question: What is a customer? 1. be able to agree payment terms. 2. Pay attention to the quality of solenoid valves.   This is called the customer. The order of these two cannot be reversed. You can make the payment, but are unclear about the industry rules for Chinese solenoid valve manufacturers, or uncertain about the quality details of solenoid valves, this is not a problem because we will take care of it for you. AAK has been producing hydraulic valves for 13 years, and AAK is the supplier of HydraForce for 9 consecutive years and Sun hydraulics for 5 consecutive years. What is there to worry about? But if you can't afford to pay but have high quality requirements, we can't do anything about it.   Chinese solenoid valve manufacturers ask themselves 3 questions: 1. The customer only looks at whether the price is cheap, is that so? 2. What other guarantees do customers want besides price? 3. How can I guarantee and he believes in my guarantee?   After Suker received our first batch of solenoid valves, I estimated that he does not want to change a Chinese solenoid valve manufacturer, otherwise he would not have placed 3 orders with AAK in 3 months. I remember joking with Suker last time: we asked for pre shipment payment, and you were just worried about the safety of over 6,000 US dollars. AAK has a house and factory in Ningbo, and my family is all in Ningbo. I couldn't have bought your 6,000 US dollars and run away.   You can try AAK if you are unsure of the solenoid valve manufacturer in China, or if you have some solenoid valves that someone else is not good at it.   AAK HYDRAULIC VALVES (582) 2023-05-14 https://www.aakindustry.com/info , -detail/solenoid-valve-aak582

After CNY, most of the hydraulic cartridge valve manufacturers in Ningbo started work on January 30. Because of the epidemic, many of us haven't returned to our hometown for 3 years, so AAK hydraulic cartridge valve started 3 days late, and also delayed answering the messages of some new customers in the CNY period. I reply to target new customers or new customers with clear messages first. Eugene, from Greece, left a message asking: How to solve the problems of unstable pressure regulation and squealing of hydraulic cartridge relief valve? After communication, it was learned that one of their hydraulic power units failed in the test run. The engineer found that the hydraulic cartridge relief valve was unstable in pressure regulation and there was a howl. This hydraulic cartridge relief valve was customized from a cartridge valve manufacturer in Ningbo, China. After the manufacturer modified it, it still failed to pass the test and the manufacturer gave up. Eugene saw AAK hydraulic valve in Google and left a message on our website. According to the analysis of the original hydraulic cartridge relief valve drawing and system schematic diagram, AAK engineers found that as long as the impact of the hydraulic system on the valve is reduced, it can not only avoid whistling, but also stabilize the pressure. Eugene didn't seem to believe that and needed us to give specific solution. Our engineer didn't recommend them to customers. He worried that customer will give our solutions to the original manufacturer to make improvements. I know the processing technology of the original manufacturer. Even if they know this solution, it is not sure to carry it out successful. AAK planned to optimize the original hydraulic cartridge relief valve in this way: As long as the processing accuracy is in place, the optimized hydraulic cartridge relief valve can isolate the oil inlet and return port when the system pressure is lower than the set pressure of the spring. When the system pressure exceeds the set pressure of the spring, the valve spool can be connected with the oil inlet and return port. The 3 advantages of stable voltage regulation, small impact and no vibration are reflected. 1. The hydraulic cartridge relief valve sleeve is equipped with large and small holes. The valve spool is installed in the small hole and plays a guiding role for the valve spool, so that the valve spool is more stable. The large hole is equipped with an elastic member seat, an elastic member and an adjusting rod, and the elastic member connects the adjusting rod and the upper elastic member seat. 2. An annular oil return hole is arranged outside the elastic member seat. An inclined hole for oil inlet is arranged on the outside of the valve spool. 3. The valve spool adopts the structure of slide valve, so the valve spool is not easy to deflect. A conical surface is machined in the middle of the valve spool, the valve sleeve is pressed on the conical surface, and the sealing line of the entire hydraulic cartridge relief valve is also on the conical surface. It seems that, as our engineer said, Eugene has no news after he got our specific plan. I was also ridiculed by the engineer that I believe too much in people, and will suffer in business. A week later, on February 10 today, Eugene's emailed us to start making samples and he will pay the fee immediately. AAK hydraulic cartridge relief valve has stable pressure regulation, small impact and no vibration. You can also try it! https://www.aakindustry.com/info-detail , /cartridge-relief-valves-aak498

Mura from Türkiye, a very polite customer, has purchased hydraulic cartridge valves from AAK for only 1 year. A few days ago, she needed to purchase a 7075- T651 hydraulic manifold weighing 2.5 tons, and contacted me. I politely declined because AAK does not have a processing center and cannot process a hydraulic manifold weighing 2.5 tons. Mura told me that 1 week has passed and this is the fifth hydraulic manifold manufacturer to refuse her. I told her that with such a large tonnage, she can only find a manufacturer for oil circuit blocks, not a hydraulic cartridge valve manufacturer. I can introduce an oil circuit block manufacturer in Ningbo to her, but she actually requested AAK to purchase this hydraulic manifold weighing 2.5 tons on her behalf. I hesitated a bit, Mura only said one sentence: In Ningbo, I only trust AAK. If the procurement of this 2.5 ton hydraulic manifold fails, the responsibility lies with her. I am quite moved. There is an old saying in China that a gentleman will die for the patron who recognizes his worth. If customers trust you like this, you have no reason to cause trouble for them. After confirming the contract for the 2.5-ton hydraulic manifold with Mura, I went to the oil circuit factory that had previous business dealings that day and urged them to complete the procurement of 7075-T651 materials that day. After the materials arrived at the factory, I made a request to visit the processing plant every 3 days to pay attention to the production process and manufacturing quality of hydraulic manifolds. The equipment is crucial for processing large volume and heavy hydraulic manifolds. We use Cincinnati Horizontal Machining Center for the processing of 2.5-ton hydraulic manifolds. Its X-axis, Y-axis, and Z-axis strokes are 4200mm, 2100mm, and 700mm respectively, ensuring that large hydraulic manifolds can be processed. Set a processing speed of 45m/min and use centralized timed lubrication to reduce guide rail wear, ensuring stable accuracy of the hydraulic manifolds and ensuring its geometric accuracy. Especially the 220 ° rotation function of the A-axis and the arbitrary 360 ° rotation of the C-axis can achieve 4-axis movement on one side of the spindle, ensuring processing efficiency. After 30 days, 10 hydraulic manifolds were produced and successfully shipped out. Yesterday, I received an email from Mura. The hydraulic manifolds shipped by AAK have been recognized by their engineers for the geometric accuracy, valve hole accuracy, and deburring effect. She can finally rest assured, and I can feel Mura's happiness from the lines of her email, at the same time, I am also at ease. AAK hydraulic manifolds, for the customers’ trust, can only do it, and do it well. You can also give it a try! AAK HYDRAULIC VALVES (681) 2023-09-28 https://www.aakindustry.com/info-detail/hy , draulic-manifolds-aak681

Sal is from Italy. He has been buying hydraulic cartridge valves in China for quite a long time and is very knowledgeable. At the beginning of this year, they developed a new hydraulic press for sheet stretching, which uses hydraulic needle valves. Considering the exhibition time, Sal directly purchased 50 standard hydraulic needle valves of HydraForce, and the trial run was successful, and the reservation volume at the exhibition was also good. The boss asked Sal to try to purchase hydraulic needle valves in China instead of HydraForce. He contacted several hydraulic needle valve suppliers, but they were not 100% confident about the internal leakage of 0.3cc/min. Sal selected 2 hydraulic needle valve manufacturers with the most trust and quality. 4 weeks later, the hydraulic needle valves were installed with the equipment. After a period of operation, the working pressure of the hydraulic press could not be increased, resulting in the plate could not be stretched. The engineer found that the hydraulic needle valve was abnormal, and there were leakage traces at the fitting gap between the valve spool and the valve body. After testing the hydraulic needle valve separately, the internal leakage was 0.5cc/min, while the hydraulic needle valve at 0.3cc/min did not have any leakage traces, that is, the hydraulic needle valves from those 2 hydraulic valve manufacturers have unstable internal leakage accuracy. Sal suggested still purchasing HydraForce standard parts, but the boss was not satisfied and asked Sal to try again. At this time, Sal was a little worried. Sal saw on Google that the manufacturing quality of AAK Hydraulic Valves is comparable to that of HydraForce. He directly sent an email to ask if AAK has existing programming for HydraForce hydraulic needle valve. We learned that they were stuck in the internal leakage. I told him that we had existing samples of this hydraulic needle valve, and its internal leakage had exceeded HydraForce standard 0.3cc/min. Sal doesn't seem to believe it and asked us to send 5 samples. Last week, Sal sent the PO for the first batch of hydraulic needle valves and told that the internal leakage of AAK samples was at 0.2cc/min, the internal leakage accuracy was 20% higher than that of HydraForce, but the price of AAK was cheaper than that of HydraForce. The boss was surprised that he found such a strong manufacturer AAK Hydraulic Valve. AAK hydraulic needle valve's ultra-small internal leakage comes from its high accuracy. We use 3 points to benchmark HydraForce in terms of manufacturing quality. 1. This hydraulic needle valve is processed with OKK ultra precision machine tool and nano level CNC system, with a processing accuracy of 0.01-0.3μm. The shape and profile accuracy is 0.003 - 0.1μm. It laid a good foundation for accuracy. 2. In terms of equipment maintenance, before machining, the shaft accuracy is detected, and after the test data is obtained, the accuracy is compensated to ensure the consistency of the processing accuracy of the components. This link requires tips and engineers with at least 15 years of industry experience. 3. In terms of accuracy detection, the German Diatest small pore diameter measuring instrument is used to detect the valve hole of each hydraulic needle valve. The minimum measurement accuracy range can reach 0.1μm. AAK hydraulic needle valves, with internal leakage less than 20% of HydraForce, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-needle-valves-aak329

Caleb is from a hydraulic equipment company in Canada, and has cooperated with AAK on several high requirements of hydraulic relief valves, but he is not satisfied with the price of AAK. In May last year, Caleb’s company produced a batch of four column hydraulic presses, which need to purchase HydraForce standard hydraulic relief valves with performance requirements of not less than 2 million times. Caleb selected a hydraulic relief valve manufacturer in Ningbo and purchased 600 pcs of same model as HydraForce. 2 months after the equipment was sold, a customer complained that the piston rod of the four column oil press vibrated abnormally. During after sales service, it was judged that the hydraulic relief valve was faulty. After inspection, it was found that the valve spool and valve seat had leakage traces. The original manufacturer of the hydraulic relief valves reported that it was an isolated case, but 1 month later, there were more similar complaints, even the system was not under pressure, and the engineer found that the valve spool was stuck. The boss was very angry and asked Caleb to purchase the hydraulic relief valves of the same model and quality as HydraForce as soon as possible. Caleb contacted more than 10 suppliers of hydraulic relief valves and required that the quality should be benchmarked with HydraForce. Most hydraulic valve manufacturers suggested that Caleb should directly purchase HydraForce products, because it was difficult to ensure that the hydraulic relief valve did not get stuck and had a service life of 2 million times. Caleb was a little worried. After wasting a week, Caleb contacted me and I told him that other hydraulic valve manufacturers suggested purchasing HydraForce valves directly, which was a good suggestion. Most manufacturers can't compare the manufacturing quality of HydraForce for this hydraulic relief valve. AAK has more than 98% confidence. If AAK hydraulic relief valves can not solve the abnormal vibration of the piston rod of the four column hydraulic press or the system has no pressure, then don't waste time on looking for manufacturers in Ningbo. After 45 days, AAK delivered 300 Hydraulic Relief Valves, and at the end of last year, another 900 pcs were re-ordered. Last week, the PO for this hydraulic relief valves came again. I joked that it seems that the sales volume of this equipment is gratifying. The boss should be happy. Caleb said that thanks to AAK hydraulic relief valves, the hidden danger of the equipment was solved. If only the original model of HydraForce was used, the boss would certainly look down on him. Now the boss has started to put him in a good position, and he will be promoted to be purchasing manager next week. The manufacturing quality of AAK hydraulic relief valve can be benchmarked with HydraForce, it is determined by the following 3 points: 1. In terms of equipment, Swiss high-precision machine tools and various independent fixtures upgraded and modified by AAK have eliminated human errors, and the accuracy of components is consistent, thus it is far better than peers. 2. In terms of production control, more than 30 years of experienced technicians are dedicated to handle the special machines. Sometimes, they can even judge the production status by listening to the sound of the machine only. Every production quality of the hydraulic relief valve is engraved in their minds. 3. In terms of quality inspection, Mahr cylindricity meter imported from Germany is used to check the quality. Through EasyForm software, the measurement results can be obtained accurately and quickly. With the help of the software, the workpiece can be quickly adjusted and aligned, so as to improve the measurement efficiency and ensure that the 100% concentricity of each hydraulic relief valve is consistent and completely free from jamming. AAK hydraulic relief valves, high precision, no jamming, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-relief-valves-aak328

Hannelore is from Germany and has been engaged in procurement for many years. Their company is going to launch a new hydraulic injection molding machine, which uses hydraulic pressure control valves. He selected a hydraulic pressure control valve manufacturer who has been cooperating for 5 years to make samples, and emphasized that the geometric accuracy of the valve spool and valve sleeve needs to be within 1μm. The manufacturer said that he might not be able to achieve it, but Hannelore believed in the sample capacity of the manufacturer because there were similar cases before. After 45 days, the hydraulic pressure control valve was installed with the equipment and began to test run. However, the movement speed of the actuator of the equipment was unstable. The engineer judged that the hydraulic pressure control valve was not up to the standard. The actual problem was that the geometric accuracy of the valve spool and valve sleeve was not up to the standard, which led to the inflexibility of the hydraulic pressure control valves. The original manufacturer has surrendered, and it will be a waste of time to retest. Hannelore contacted more than 10 hydraulic valve manufacturers. They either have no reply, or said that they were only 80% confident. Hannelore had no time to bet on this 80% confidence, because the exhibition time was approaching. At this time, Hannelore was extremely worried. Hannelore found AAK Hydraulic Valve on Google, leaving a message: how much can the geometric accuracy of the valve spool and valve sleeve of the hydraulic pressure control valve be controlled. I replied directly, within 1.0μm, no problem. Hannelore sent the drawing of hydraulic pressure control valve and asked for AAK samples. After 40 days, AAK hydraulic pressure control valve samples were sent. After 10 days, Hannelore advised that the geometric accuracy of the valve spool and valve sleeve of each sample of AAK did not exceed 0.8μm. The prototype passed their test run is already on the way to the exhibition hall. Hannelore's depressed mood was finally released. I told him to have a drink in the evening and then just wait patiently for the good news of the exhibition. Last week, Hannelore told us that the exhibition effect was good. He ordered 800 hydraulic pressure control valves first, and emphasized that the delivery time should be on time and the quality should be the same as the trial order. I joked that these are the lowest level commitments in AAK. AAK hydraulic pressure control valves broke his concerns completely with 3 points: 1. Swiss high-precision honing machine, the geometric accuracy of valve spool and valve sleeve can be controlled within 0.8μm. With this precision foundation, there is no need to worry about the optimal range of the fitting clearance between the valve spool and the valve sleeve. 2. The Mahr cylindricity meter imported from Germany, through EasyForm software, the measurement results can be obtained accurately and quickly. With the help of the software, the workpieces can be quickly adjusted and aligned to improve the measurement efficiency and make the accuracy of each gap consistent. 3. AAK is the hydraulic valve supplier of 7 world top 500 enterprises, its service has been verified for a long time, both in terms of delivery date and manufacturing quality. AAK hydraulic pressure control valves, high precision, long life, you can also try it! https://www.aakindustry.com/info-detail , /hydraulic-pressure-control-valves- aak327

For a 6061-T6 aluminum hydraulic manifold block with 80 deep cavities and a wall thickness of 5MM, Brody asked 3 hydraulic manifold block manufacturers to make samples, but they all failed. AAK used 7075-T6 aviation aluminum to replace the conventional 6061-T6, breaking through the limitations of traditional processing, with guaranteed accuracy, reaching Ra0.2μm surface finish. We skillfully used abrasive flow processing technology to 100% remove burrs and helped Brody get out of trouble. Brody, a hydraulic customer from the United States, needed to develop a hydraulic manifold recently, which has high requirements on the hydraulic manifold block. The inner chamber is deep. There are 80 deep holes on the side of the inner wall, and there are many long and thin holes. It has big difficulty on process and requires high precision. Brody knew that this hydraulic manifold block was not simple, so he specially arranged 3 trustworthy hydraulic manifold block manufacturers to make samples at the same time, but the results were not satisfactory, either the scrap was high, or the inner hole stayed at Ra1.6μm. Brody didn't want to give up this order. Brody checked with 20 hydraulic manifold block manufacturers online and offline, but they were either silent or could not afford the difficulty of processing. Brody considered giving up. His friend Smith, also an old friend of AAK, recommended AAK to him. According to the drawing of the hydraulic manifold block sent by Brody, AAK engineers first responded that it was difficult. 3 days later, the processing process of the hydraulic manifold block was completed, but only 90% was sure. Brody did not hesitate and paid the development cost. 4 weeks later, AAK sent 3 hydraulic manifold block samples. 6 weeks later, Brody sent the PO for 300 pcs of hydraulic manifold blocks.   On the premise of ensuring dimensional accuracy, AAK broke through the limitation of traditional machining, and replaced 6061-T6 with 7075-T6 aviation aluminum material, which is not only good in toughness, but also more impact resistant in processing. The high strength can solve the hidden danger of 5mm wall thickness. In terms of inner hole finish, abrasive flow machining technology and semi fluid medium containing silicon carbide abrasive are used to guide the flow through the surface to be machined of the workpiece under a certain pressure, so that the abrasive can squeeze the material and remove it slightly. The operating parameters are adjusted as follows: machine pressure 14~224kg/cm ²； Silicon carbide sand particles with a diameter of 0.005~1.5mm shall be selected as the abrasive particles; The diameter of abrasive cylinder is 150~600mm.   New processing operation parameters ensure that the cutting uniformity of the abrasive flow on the machined surface is kept within 10% of the cutting amount, and the surface finish value can be reduced to about 1/10 of the original, reaching Ra0.2μm surface finish and low scrap rate.   AAK aluminum hydraulic manifold block, high-precision, burr free, welcome to try! https://www.aakindustry.com/info-d , etail/hydraulic-manifold-blocks-aak425

Santos is from Poland, and has been purchasing hydraulic cartridge valves from China for 2 years. Recently, they developed a hydraulic power unit that required 1.0μm accuracy hydraulic pressure control valve. He made samples from a hydraulic pressure control valve manufacturer that has been cooperating for 2 years. During equipment debugging, it was found that the hydraulic system's pressure supply was unstable, and the root cause was that the accuracy of the hydraulic pressure control valve spool and hole did not meet the standard, most of which were in 2μm. The original manufacturer of the hydraulic pressure control valve stated that he cannot afford this precision and has to surrender. Santos contacted other hydraulic pressure control valve manufacturers, but there was no result. His boss was not satisfied with the procurement efficiency, so Santos was in a worry. Santos browsed the AAK website on B2B and noticed a customer case of AAK hydraulic pressure control valves with high precision requirements. He emailed us to ask: Can AAK ensure that the accuracy of each hydraulic pressure control valve can be controlled within 1.0μm? After communication, we learned that we have an existing program for the hydraulic pressure control valve he needs. Despite Santos' complaints about higher prices than the original hydraulic valve manufacturer, he still tried ordering 30 hydraulic pressure control valves. Last week, Santos informed us via email that after installing the AAK hydraulic pressure control valve, the hydraulic system's pressure supply was stable. Their engineers were very satisfied with the accuracy of the AAK hydraulic pressure control valve, and none of them exceeded 1.0μm. Precision is the most important test of the quality of a hydraulic cartridge valve manufacturer, it is not only related to equipment, fixtures, technicians, but also highly related to the quality level of the manufacturer. AAK hydraulic pressure control valve, accuracy controlled within 1.0μm, the key lies in 1. precision machining + 2. detection. 1. In the process of component precision machining, AAK uses SUNNEN honing machine imported from the United States, with component accuracy controlled with 1.0μm. 2. In the component detection process, AAK uses the KEYENCE image measuring instrument imported from Japan, which is not only accurate but also efficient, and 100% detects the accuracy of each component. 3. In the finished product inspection process, each hydraulic pressure control valve is tested on a test bench, and its performance is guaranteed. AAK hydraulic pressure control valve, with precision and worry free performance, you can also give it a try! https://www.aakindustry.com/info-detai , l/pressure-control-valve-aak581

Snova is from Russia. A few days ago, she left a message on AAK hydraulic valve website: 1．Can AAK deliver 500 pcs of hydraulic directional control valves PC08-30 within 35 days? 2. The outer diameter accuracy of the valve cage needs to be higher than HydraForce standard, as our original system has a higher accuracy setting than HydraForce. 3. Can we ship first and make payment later? Upon seeing this message, I estimated that she encountered difficulties in purchasing the hydraulic directional control valve PC08-30. After communication, I learned that she had chosen a hydraulic cartridge valve manufacturer in Ningbo China. In fact, the manufacturing quality of this manufacturer should not be a problem compared to that of HydraForce PC08-30. Snova advised that the main issue is the unstable accuracy of the outer diameter of the valve cage, as their standard is higher than that of HydraForce PC08-30. Based on the 3 points in her message, I replied that point 1 and 2 are a challenge, but we are confident in surprising her. Point 3 is impossible, AAK never does credit business. Snova mentioned that because the original hydraulic cartridge valve manufacturer wasted 6 weeks, she must find a manufacturer who is able to deliver 500 pcs of hydraulic directional control valves PC08-30 within 35 days, and the outer diameter accuracy of the valve cage needs to be higher than HydraForce PC08-30 standard. The valve cage that happens to be being processed in AAK workshop is somewhat similar to PC08-30. I sent her a video to show the production process. Whether it is precision control or production efficiency, this video can dispel Snova's concerns. For precision machining of the outer diameter of the hydraulic directional control valve cage, especially the precision requirements in 1-2μm, it can be done by using Japan's Tsugami CNC centerless grinding machine. The biggest advantage of this equipment is the grinding wheel shaft, which uses Tsugami's high rigidity dynamic pressure bearings, without any possibility of deviation, providing guarantee for accuracy without deviation. Before the production of the hydraulic directional control valve cage, according to the accuracy requirements of the valve cage, set the system program, adjust the height of the workbench, ensure that the installation position of the workbench, valve cage, and the distance and angle between the spindle axis meet the requirements, which tests the skills of the technician. AAK has also equipped the device with an automatic turntable. We only need to place the valve cage to be processed into the turntable. After starting the device, there is no need for technicians. The centerless grinding and precision machining does not need manual labor, with an efficiency increase of over 30% and an accuracy 1μm higher than HydraForce FC08-30. 30 days later, last week, AAK delivered 500 pcs of hydraulic directional control valves PC08-30. Snova is very happy, at least AAK's production efficiency is higher than other hydraulic cartridge valve manufacturers in Ningbo China. I told her that there was no need to worry about the outer diameter accuracy of the valve cage, as AAK's standard was 1μm higher than the HydraForce standard. AAK hydraulic directional control valve, with an efficiency increase of over 30% and an accuracy increase of 1μm, you can also give it a try! AAK HYDRAULIC VALVES (680) 2023-09-26 https://www.aakindustry.com/info , -detail/directional-control-valves-aak680

Logan, a British customer, checked with 10 hydraulic valve manufacturers that he often contacted, none of them can make a hydraulic relief valve with high pressure resistance of 450Bar. Only AAK solved the problem of high pressure resistance with 68HRC material and ensured the performance of 2 million times. According to the requirements of the engineer, Logan defines the material hardness of the hydraulic relief valve as above 68HRC, which is 10% higher than that of the conventional hydraulic relief valves. After a round of consultation, 8 hydraulic valve manufacturers gave up, and the other 2 old hydraulic relief valve suppliers tried to make samples. 2 weeks later, the hardness of the samples of the 2 hydraulic relief valve suppliers remained at 63-65HRC, which was their maximum capability. Logan had no choice but to look for the manufacturer of hydraulic relief valves again. Logan consulted 20 companies online, and they all said that they were not confident to try 68HRC materials and 450Bar high-pressure hydraulic relief valves. Logan was in a big headache. Logan found some articles of AAK about the 450Bar high-pressure hydraulic valves on the B2B website, including 68HRC materials. He emailed the drawing of hydraulic relief valve directly to AAK and asked AAK for samples. After communication, we learned that the sample of this hydraulic relief valve was stuck on the material hardness. I told him that 68HRC material was a must for the hydraulic relief valves with high pressure resistance of 450Bar, otherwise the service life of 2 million times could not be guaranteed. AAK can send the hydraulic relief valve samples in 2 weeks, but the development cost of US$1,200 for the trial order needs to be paid first. Logan seemed to have concerns. I said with a smile that AAK publishes articles on solving the difficult problems of hydraulic valves on the Internet every day. If it's only for your $1,200, our time is not worth it. Logan was instantly relieved and informed the financial department of the payment. He was surprised that the manufacturers he contacted could not make the high-pressure hydraulic relief valves, and AAK had solved the 68HRC material very early. AAK has 3 points to ensure that the material can reach 68HRC, which is also the reason why most hydraulic valve manufacturers are uncertain. 1、The imported alloy billet is selected to replace carbon steel, and then the billet is forged at high temperature, and the hardness of the material is increased by at least 3-5%. 2、Quenching and tempering heat treatment shall be conducted after forging: 2 high-temperature normalizing + 2 high-temperature tempering shall be adopted, and each time the insulation shall not be less than 15 minutes. There are tips for controlling the temperature range. 3、After tempering treatment, the workpiece is cooled to room temperature by combining water cooling and air cooling. Firstly, the workpiece is water cooled to 475-485°C at a cooling rate of 8-9°C/s, then air cooled to 325-345°C, then water cooled to 195-2050°C at a cooling rate of 4-5°C/s, and then air cooled to room temperature. In this 4-step process, most hydraulic relief valve manufacturers only take 2 steps. 2 weeks later, the hydraulic relief valve samples of AAK were sent out. Logan told me 1 week after receiving the samples that AAK hydraulic relief valve was not only resistant to high pressure, but also the material hardness of each part reached the standard. AAK hydraulic relief valves, high pressure resistant, long life, welcome to try! https://www.aakindustry.com/info-d , etail/hydraulic-relief-valves-aak326

Recently, ChatGPT is so hot that the system can't bear the surging traffic. Last November, after ChatGPT went online, Paul Buchheit from Gmail predicted that Google would be overturned in 1 or 2 years, based on the fact that technological progress would change the way people access information. These days, I try ChatGPT every day. I use 3 kinds of titles to ask ChatGPT for help to generate 800-word articles. 1. Title of information or data: common problems and maintenance methods of hydraulic cartridge valves. 2. The title of personalized category: AAK Hydraulic Manifolds, based on 3 points, has attracted 3 types of customers. 3. Title of the innovation category: After 4 proofing and 3 material changes were made, AAK was awarded a big order of cartridge valves by HydraForce finally According to the generated content of the article and my superficial feeling, to say something negative first: 1. The selling points and purchase reasons of AAK hydraulic cartridge valves must be refined and organized by professional 5-know people who understand cartridge valves. 2. The hydraulic cartridge valve article written by ChatGPT is basically correct nonsense, except for information or data. 3. The creativity of human brain on hydraulic cartridge valve is infinite, and ChatGPT's creativity on hydraulic cartridge valve still needs data accumulation. Then say something positive: 1.100% can write general articles instead of some liberal arts students because it is armed by "machine learning". 2. It is helpful and even forward-looking for writing articles about consumer goods and consumables (such as beverages, bread, etc.). 3. You know the content, but the expression is very stiff. ChatGPT can help you overcome it, not only smooth, but also more orderly. The arrival of ChatGPT can't be said to be subversive, at least it will change the way of search engines. Because no matter what proposition it is, it needs preconditions. 1. For example, brand and trust depend on what kind of products. Cheap things should be branded, and expensive things should be trusted. Drinks should have brands and hydraulic cartridge valves should have trust. 2. For example, cognition and skills, which is important? The prerequisite is that you are an elite or a grassroots. The gap between grass roots and grass roots is not cognition, but skills to make money. The gap between the elite and the elite is not the skill, but the perception of making money. 3. Does copywriting emphasize the importance of tone or product? The prerequisite is that you are a big brand or a grassroots. Nike shoes can say Just do it. They are qualified not to talk about products, but to talk about realm. Grassroots say Just do it, how many people do you think will pay? Believe it or not, I don't believe it. No matter ChatGPT, or subversive technology, they both need preconditions. Good people see good things, and shameless people see shameless things. Those who engage in the manufacturing of hydraulic cartridge valves, only do well themselves, embrace new technologies, be kind and work hard. AAK, a hydraulic cartridge valve manufacturer in China, do business with mindfulness, make friends with good intentions. https://www.aakindustry.com/info-detail/hy , draulic-cartridge-valve- manufacturers-aak497

Yesterday, I saw a report in the New York Times: "China's economic slowdown has brought difficulties to the United States and the world.". It seems that now it's China's turn to catch a cold, and the world will sneeze. During this period, the domestic financial and economic columns have become more and more confused. There are both pessimistic and optimistic views on China's economy, but it seems that most of the big news are always pessimistic. At present, there are indeed difficulties, but China has its own special 3 trumps: autonomy and independence, a complete industrial and technological chain, and the world's largest economy.   I don't like pessimistic views and remarks very much. Foreign media have been criticizing China for decades, and some domestic elites have also been singing along. However, China has become the second largest economy in the world. Facts have proved that China's progress is wave like, which is the same as making hydraulic cartridge valves. The hydraulic cartridge valve manufacturers are also wave like in their development. In fact, people are also like this. Few people have made great progress from birth. Whether you can stand on the wave head, and whether you can stand on the wave bottom.   Therefore, I am still optimistic. Maybe the pessimist is right, but the optimist has been successful. There is a long way to go. Anyway, keep faith and always believe that good things will happen soon. Maybe the probability of success will be higher.   In the manufacturing industry, especially the mechanical parts with high technical content such as hydraulic valves, they are slow, stupid, and solid, and they are the efforts of smart people. There is no shortcut on this road. There is no safe haven. If without manufacturing quality 1 lead in the front, and any more 0 after it, it will return to zero after all.   AAK Hydraulic Valve, starting from the first sample of foreign trade, must be benchmarked with international first-class brands in terms of quality awareness. This is also the fundamental reason for being able to supply hydraulic valves to 7 of the world's top 500 enterprises.   AAK hydraulic valve's 3-point insistence (manufacturing quality, function and performance) is beyond the reach of peers.   Manufacturing quality of AAK Hydraulic Valves: 1）Material selection: replace brand material A with A+ material 2）The accuracy of precision parts of the valves can reach within 2 microns (such as roundness and cylindricity) 3）4 inspections for each valve (precision dimension of machined parts, tightness of assembly, pressure test and random fatigue test)   AAK Hydraulic Valves Function: Benchmark original brand samples: the internal leakage, such as check valves, shall be controlled at 2drops/min; For example, pressure control valve, direct acting relief valve RV10-20A, with an opening and closing rate of 85%; For example, the flow control valve FD50-45 has a diversion accuracy of 10%   AAK Hydraulic Valves Performance: The service life of the conventional valves can reach 1.5 million times, and the customized valves can reach 2 million times.   AAK Hydraulic Valve has made a good quality positioning and maintained an optimistic attitude. No matter how far the road is, it will eventually arrive. https://www.aakindustry.com/info-de , tail/hydraulic-cartridge-valves-aak325

For the hydraulic check valve with the length diameter ratio of 25:1, Andrew contacted with more than 20 hydraulic check valve manufacturers online and offline in 1 week, but none of them was willing to offer. The boss was very dissatisfied and Andrew was very headache. Andrew from Spain left a message on AAK Hydraulic Valve website some time ago: can you make samples for a hydraulic check valve with a length diameter ratio of 25:1? After communication, we learned about his current purchasing situation. Because he saw on B2B that AAK published an article on the length diameter ratio of a hydraulic relief valve, then he contacted us with a try attitude. According to Andrew's drawings, it is a long and thin shaft hydraulic check valve with very complex structure. No wonder no hydraulic valve manufacturer is willing to offer. I told him that this hydraulic check valve has a length to diameter ratio of 25:1, which was 5 times that of conventional valves, and it was difficult to cut. Especially in terms of accuracy, it was very particular about equipment, operators and technology. We are willing to make samples. If AAK sample fails, there is no need to find the hydraulic check valve manufacturer in Ningbo. Andrew may have no choice but to accept the sample first and then quote. After 10 days, AAK sent 3 hydraulic check valve samples. The key to machining the thin and long shaft of this hydraulic check valve is how to control the thermal deformation of the workpiece. During cutting, the workpiece is high in temperature and easy to deform. On the 3rd day after Andrew received the samples, he informed by email that his team had approved that AAK hydraulic check valves not only had the length diameter ratio of 25:1 in place, but also had the surface roughness and geometric accuracy up to standard. For hydraulic cartridge valves with large length diameter ratio, AAK has accumulated the following 3 experiences after years of exploration: 1. Drill and fixture: long drill to be matched from hardness, heat resistance and impact toughness. When the clamping method of one clamp and one top is adopted, the elastic movable center is also used to compensate the thermal deformation and elongation, so that the elongated shaft can be freely extended after being heated to avoid thermal deformation. 2. Cutting amount and cutting fluid: according to the length diameter ratio, the drilling amount is reasonably selected. This is a skill. During cutting, the cutting fluid shall be poured sufficiently to suppress the rise of the working temperature and thus the thermal deformation. 3. The tool shall be kept sharp and the tool changing frequency shall be increased to 3 times. It can effectively reduce the friction heat between the tool and the workpiece, and control the thermal deformation from the source. This morning, I received the PO for this hydraulic check valve from Andrew. He told me that although the customer complained that their quotation was slow, they were the fastest and the only supplier of the sample success at only one time. AAK hydraulic check valve, with unique skills on the length diameter ratio, welcome to try! https://www.aakindustry.com/info-detai , l/hydraulic-check-valves-aak324

Torsten is from the Netherlands. As an old purchaser, he is very handy in the hydraulic industry. Unexpectedly, he fell on a hydraulic valve block with 24 deep holes and large holes. In the second half of last year, his company developed a large-scale hydraulic windlass for ships. The hydraulic valve block used was sampled from a hydraulic valve block manufacturer in the Netherlands, but the machine running test was not smooth. After the equipment has been operated for 8 hours, there is leakage at the installation hole of the hydraulic valve block. After eliminating the suspected quality of the hydraulic cartridge valves, the engineer inspected the installation hole of the hydraulic valve block and found that the center position of the hole was offset. The original manufacturer of the hydraulic valve block feedback that it is caused by the deviation of the drill bit, and a new sample is required. However, although the processing accuracy of the second sample was improved, there was still leakage 1 month later. Now the equipment is waiting to be put into production. Their engineers have push Torsten 3 times. He can only look for new hydraulic valve block manufacturers. Torsten contacted more than 10 manufacturers and asked if they could process the hydraulic valve blocks with 24 deep holes and large holes. Only 2 manufacturers were willing to try, but they were not 100% sure. Torsten left message on AAK website: how to control the accuracy of the hydraulic valve blocks with 24 deep holes and large holes? At first, I thought it was from a peer of hydraulic valve blocks, and ignored it. It was not until Torsten sent three-dimensional and two-dimensional drawings of the hydraulic valve block that I knew the difficulties he had encountered. I told him that AAK had produced similar hydraulic valve blocks with large holes and deep holes. After 28 days, 5 hydraulic valve blocks were sent. 3 months later, Torsten sent an order for 500 hydraulic valve blocks. He specially reminded that the accuracy of the mass production must be the same as that of the samples. AAK is the only manufacturer of hydraulic valve blocks whose samples passed the test. AAK hydraulic valve blocks, for the processing of deep holes and large holes, there are 3 details: 1. Before the hydraulic valve block is processed, the clamping stiffness of the tool shall be verified to avoid the insufficient clamping stiffness of the drill bit, which may cause the drill bit to deviate and cause the processing hole to be slightly elliptical. 2. During the processing of the hydraulic valve blocks, a small drill bit smaller than the processing size is used for pre drilling. The deeper the drill bit is drilled, the easier it is to deviate from the predetermined axis, resulting in the deviation of the center position of the processing hole. The secondary processing of AAK can ensure that the drill bit does not deviate. At the same time, the feed amount and speed setting of the tool are strictly subdivided, so that the cutting chips can be timely excluded from the hole. Most hydraulic valve block manufacturers suffer from this link. Cutting chips are accumulated at the end, affecting the roughness of the valve hole and the processing of the drill bit, leaving hidden dangers for later leakage. 3. After the hydraulic valve block is processed, the center position, roughness and roundness of the processed hole shall be checked one by one. AAK hydraulic valve blocks, is not afraid of deep holes, nor slender holes, nor large holes, no deviation. You can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-valve-blocks-aak323