Mechanical Hardware

Last weekend, Boris from Russia left a message on the website of hydraulic manifold manufacturer AAK: I have followed your article about valve hole accuracy 2μm for hydraulic manifolds. How does AAK do the precision machining? After communication, we learned that Boris is an engineer from a hydraulic manifold manufacturer in Russia, who also purchases from Chinese hydraulic manifold manufacturers. Although their supplier also has German Gehring high-precision CNC honing machines like AAK, there are still a small number of valve holes that do not meet the accuracy standards, which makes him very distressed. This is a very interesting message. Boris seems to be learning from hydraulic manifold manufacturer AAK and doesn't seem to believe it very much. I asked Boris if he knows how his supplier checks the accuracy of valve holes after precision machining. I sent him a video of AAK valve hole accuracy testing. 3 days later, Boris replied that his original supplier did not have such testing equipment. Today, I received his inquiry for a hydraulic manifold, the valve hole accuracy needs to be controlled within 2μm and with a verticality tolerance controlled within 5 microns, this may be an appetizer for Boris testing hydraulic manifold manufacturer AAK. I am very confident in winning a high- quality hydraulic manifold customer. How does hydraulic manifold manufacturer AAK detect the accuracy of valve holes after precision machining? For the testing of this manifold, we use a Swiss HEXAGON bridge type CMM. The hydraulic manifold is placed on the testing platform, and the instrument starts working. The probe for testing is placed on the valve hole. The dimensional accuracy of the valve hole and the geometric accuracy of the manifold block are controlled through a program, and the data is presented on the computer screen. The accuracy of the detection, as well as the geometric accuracy of the hydraulic manifold, especially the triangular beam bridge design, is more stable during the detection process. There is also a dovetail guide rail, which is easy to operate and does not need to worry about human error. Good precision machining indeed solves the problem of accuracy, but high-precision testing is still needed. With this dual approach, there is no need to worry about customer complaints. Hydraulic manifold manufacturer AAK, with tips for precision machining and personalized precision testing, you can also give it a try! AAK HYDRAULIC VALVES (696) 2023-10-19 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak69 , 6

Broderick, from Türkiye, has been engaged in the procurement of hydraulic cartridge valves for 2 years and has been successful. Recently, Broderick encountered trouble with the SUN standard hydraulic cartridge valve CBCA-LAN purchased from a hydraulic cartridge valve manufacturer in Ningbo. The accuracy of the hydraulic cartridge valve cage is unstable, and the original manufacturer is willing to compensate, but it takes 40 days. Due to the delay in the early stage, Broderick can only leave the factory 20 days of production time. It was stuck due to time. Broderick had a very big headache. Broderick found hydraulic cartridge valve manufacturer AAK and asked if AAK could guarantee the stability of the machining accuracy of each valve cage, as well as the completion of 500 CBCA-LAN hydraulic cartridge valves in 20 days. Time is so tight, I'm a bit surprised. After communication, I learned that he purchased CBCA-LAN hydraulic cartridge valves from a manufacturer in Ningbo and encountered valve cage accuracy issues. In fact, the processing of valve cage for CBCA-LAN is not difficult, there is only one possibility. The factory did not conduct quality inspection on the accuracy of hydraulic cartridge valve cages, or only conducted spot checks. I went to the workshop to take a video of the AAK quality inspection process for the accuracy of hydraulic cartridge valve cages, and sent it to Broderick. I told him that there are less than 3 hydraulic cartridge valve manufacturers in Ningbo China who can complete the production of 500 CBCA-LAN hydraulic cartridge valves in 20 days unless they have inventory. Broderick only discussed the price for 2 rounds and confirmed the order for 500 pcs of CBCA LAN. 20 days later, AAK delivered the shipment of hydraulic cartridge valves on time. The upgrading of the testing process and 100% full inspection of the CBCA-LAN hydraulic cartridge valves are the key while ensuring stable manufacturing quality and high production efficiency in AAK. AAK fully automatic hole measuring instrument is used to detect the valve cage. After the processed valve cage enters the reserve box, there is no need for manual labor. After starting the equipment, the conveyor belt began to work and completed the detection of the outer roundness and inner hole accuracy of the hydraulic cartridge valve cage in 3 seconds, with 4 workstations working simultaneously. It can efficiently and reliably measure the outer roundness and inner hole accuracy of each hydraulic cartridge valve cage. The detected valve cage will automatically enter the push plate, and there are 4 branches on the push plate, namely valve cage scrap, qualified, utilized, and reworked. The equipment will automatically push branches based on the measurement results of the system, and qualified valve cages will directly enter the next process. AAK has been taking action to create hydraulic cartridge valve manufacturers for unmanned processes. Currently, hydraulic cartridge valve manufacturers who do not upgrade to unmanned equipment, may go to the end of their business in 5 years. What we can think of is the unmanned workshop of hydraulic cartridge valve manufacturers can minimize labor costs. The factory has fewer employees, greatly reduces management difficulty, and the key is to eliminate human error. I believe that the scale of future hydraulic cartridge valve manufacturers will no longer be measured by the number of workers, with a few or dozens of workers. The key is the hydraulic cartridge valves produced in unmanned workshops, have stable quality and low production costs. Who doesn't love them? Hydraulic cartridge valve manufacturer AAK in Ningbo China, not only fully inspects the valves, but is also more efficient than its peers. You can also give it a try! AAK HYDRAULIC CARTRIDGE VALVES (695) 2023-10-17 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak695

Sheridan is from a hydraulic equipment company in Mexico, and has just been employed for less than a year. The hydraulic pilot operated proportional relief valve purchased some time ago fell him down. One of their hydraulic power units required Sheridan to purchase a hydraulic proportional relief valve. Sheridan worked with a hydraulic relief valve manufacturer in Ningbo who has cooperated with their company for 4 years to make samples. The equipment debugging was abnormal. When the rated flow was set to be large, the pressure was unstable. Their engineer asked to optimize the hydraulic pilot operated proportional relief valve, but the original manufacturer said that their hydraulic proportional relief valve met the accuracy and parameter requirements of the drawings, and had no solution to optimize the original design. Sheridan had a big head and had to look for other hydraulic cartridge valve manufacturers, but a week passed without success. Sheridan, a newcomer, was under great pressure. Sheridan found AAK on Google, noticed that AAK had solved the difficult and complicated problems of hydraulic cartridge valves, and left a message to us: Can you optimize the hydraulic pilot operated proportional relief valve and ensure the pressure is stable? At the sight of such messages, I guessed that he encountered difficulties in purchasing hydraulic pilot operated proportional relief valves. According to the original design drawing and system schematic diagram provided by him, AAK engineers worked out a plan after 1 day. Sheridan asked for samples, and AAK sent samples of hydraulic proportional relief valve 40 days later. A month later, Sheridan emailed that after replacing with AAK hydraulic proportional relief valve, the equipment was stable and had been delivered to customers for trial use. AAK hydraulic pilot operated proportional relief valve has stable operating pressure, small hysteresis and stable rated flow. We have optimized the original design from 3 aspects. 1. The side of the main valve body is provided with a valve oil inlet and a valve oil outlet, the main valve spool is installed in the main valve body, and both ends of the main valve spool are respectively provided with damping and fixed orifices. 2. The pilot valve seat is installed in the pilot valve body, the poppet valve spool is arranged between the proportional electromagnet and the pilot valve seat, and a return spring is arranged between the poppet valve spool and the pilot valve seat. 3. A force transfer spring and a spring seat are arranged between the poppet valve spool and the proportional electromagnet, a return spring is arranged between the nut and the main valve spool, the proportional electromagnet is connected with the pilot valve body and the main valve body through screws, and the cover plate is installed at the other end of the main valve body. When the proportional electromagnet has no current signal, the pressure oil enters the radial small hole of the main valve spool through the valve oil inlet, and then reaches both ends of the main valve spool. The pressure oil is connected with the pilot valve seat through the fixed orifice. The pressure oil can overcome the force transfer spring to push the poppet valve spool open and enter the oil outlet of the valve. When the proportional solenoid constant current is given, a certain thrust will be generated. The pressure oil needs to overcome the thrust of the force transfer spring and proportional solenoid, reduce the hysteresis, and ensure the stable operation of the hydraulic pilot operated proportional relief valve. AAK hydraulic pilot operated proportional relief valve, no hysteresis, and stable, you can also try a small order! https://www.aakindustry.com/info-det , ail/relief-valves-aak435

In March this year, Tancredo, an old customer from Italy, emailed me: Can you complete 50 non-standard customized hydraulic cartridge relief valves in 30 days and the valve hole accuracy within 1μm? I guess he ran into a wall when purchasing hydraulic cartridge relief valves from other hydraulic cartridge manufacturers. In the second half of last year, they developed a high-precision hydraulic pipe pressing machine, which requires the use of hydraulic cartridge relief valves. Due to time constraints, they chose samples from local hydraulic valve manufacturers, but the equipment debugging was not smooth. The pipe pressing accuracy of the hydraulic pipe pressing machine is not up to the standard, because the accuracy of the valve hole of the hydraulic cartridge relief valve exceeds 1.0μm. There is leakage. However, the manufacturer of the original hydraulic cartridge relief valve reported that there was no time to sample again and returned the development cost. The time was wasted for more than a month. Tancredo was dumbfounded. Tancredo had to try overseas hydraulic valve manufacturers, and this was why he emailed me. The hydraulic cartridge relief valve with 1.0μm hole accuracy is a big challenge for most hydraulic cartridge valve manufacturers, but AAK is confident to complete 50 non-standard customized hydraulic cartridge relief valves within 30 days. Four weeks later, 50 non-standard customized valves were sent out. Two weeks later, Tancredo emailed that their engineers were satisfied with the dimensional accuracy of the hydraulic pipe pressing machine installed with AAK hydraulic cartridge relief valves. And the hole precision of AAK hydraulic cartridge relief valves is within 0.8μm, which is 25% higher than what they required. AAK can make the hydraulic cartridge valves more accurate, and the production efficiency is faster, which is also the embodiment of AAK's capacity, and perhaps also the place where AAK is valuable. For this hydraulic cartridge relief valve, we choose OKK ultra precision machine tool from Japan. Its nanometer resolution system can ensure that the processing accuracy of components can reach 0.01~0.3μm. The precision of shape and contour is 0.003～0.1μm. At the same time, the fast moving speed of each axis reaches 60 meters per minute, which is more than 30% faster than the production efficiency of other machine tools. Fixed operation technicians in the workshop, specially assigned persons and special machines, and 2 shifts, eliminating the uncertainty in production. Tancredo told me privately that the boss was very satisfied with his quick solution this time, and he was responsible for some large purchases. AAK hydraulic cartridge relief valve, high precision, high efficiency, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-relief-valves- aak366

Last week, Beardsley, a British customer, sent us an order for 600 hydraulic cartridge directional control valves. This is the 3rd time that he reordered this valve. AAK hydraulic cartridge directional control valve, with the valve hole accuracy with 0.8μm and opening and closing within 1s, helped their equipment sell well. Beardsley contacted more than 20 hydraulic valve manufacturers before and after, but only AAK calmed his impatient heart. At the beginning of last year, they developed a four column hydraulic press. The main selling point is accurate positioning and stable control. Therefore, they have strict requirements on the accuracy and opening and closing of the hydraulic cartridge directional control valve. Beardsley firstly contacted several old hydraulic valve suppliers. After learning the parameters, they all gave up. More than 20 manufacturers of hydraulic cartridge directional control valves have been communicated online and offline, and only 2 are willing to sample. After 45 days, the valve hole accuracy of the hydraulic cartridge directional control valve samples exceeds 1μm. 2 months passed, but the manufacturer of the hydraulic cartridge directional control valve was still not approved yet. Beardsley was worried. Beardsley found AAK on Google and left a message on our website: for the hydraulic cartridge directional control valve with valve hole precision of 0.8μm, how confident are you of success? After communication, it was learned that the manufacturer of the hydraulic cartridge directional control valve had not been approved after two rounds. According to the drawing of hydraulic cartridge directional control valve provided by Beardsley, the valve hole accuracy is 0.8μm, and the opening and closing characteristics are within 1 second, which is really a challenge. I dare not say 100% sure, but there is still a 90% probability. Beardsley asked AAK to try the order first and was willing to pay the development cost. After 40 days, AAK sent the samples of hydraulic cartridge directional control valve. 3 weeks later, Beardsley told us that after installing AAK hydraulic cartridge direction control valves, the test run of the four column hydraulic machine was smooth, the positioning of the equipment was accurate and the control was stable. His impatient heart finally calmed down. For the hydraulic cartridge directional control valve with valve hole accuracy 0.8μm, the opening and closing within 1 second, AAK focused on 3 points, there is hardly a third one in Ningbo. 1. On the equipment, the German Gildemeister ultra high precision machine tool is used for processing to ensure the accuracy of 0.5-0.8μm. For most hydraulic valve manufacturers, the accuracy can only reach 1-3μm at most. AAK machining accuracy is more than 3 times of theirs. 2. In terms of development, the valve hole accuracy can be customized, while more than 95% of domestic hydraulic valve manufacturers just make the common size of the industry. Not only is it difficult to choose the tool, but also the customized processing challenges the engineers. 3. In terms of testing, we used the German Diatest high-precision small pore diameter measuring instrument to test each valve hole, while most hydraulic valve manufacturers conducted spot checks and did not have a targeted measuring instrument. AAK hydraulic cartridge directional control valve, valve hole accuracy within 0.8μm. You can also try a small order. https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-directional- control-va , lves-aak365

This week, we’d like to introduce a hydraulic cartridge valve equivalent to HydraForce PR10-32. It is a screw in, cartridge style, direct acting, spool type, hydraulic pressure reducing/relieving valve with internal pilot and internal spring chamber drain. It is designed to act as a pressure regulating device for secondary circuits. It is intended for use in stable input flow circuits. Last January in 2022, a customer in Russia found AAK when looking for a hydraulic cartridge valve manufacturer in China on Google. She sent us an inquiry for 10 pcs of HydraForce cartridge valve PR10-32, along with several other HydraForce standard parts. However, AAK did not have existing programming for PR10-32 and did not quote. Instead, the customer placed trial order for the other models.   This January in 2023, the customer checked with us again if AAK is willing to develop PR10-32 as per their original samples. Although they can buy PR10-32 from other hydraulic cartridge valve manufacturers in China, they do not trust their quality. Because the quality of the other trial orders shipped by AAK last year was very satisfying, they want to develop PR10-32 with AAK. In March, the development was finished and delivered.   Last week, we were very happy to learn from the Russian customer that the E- PR10-32 Pressure Reducing/Relieving Cartridge Valve developed by AAK is running very smoothly, the quality is very stable. They are going to ask AAK to develop more and more new models.   AAK hydraulic pressure reducing/relieving cartridge valve E-PR10-32 two advantages: 1. Pressure Rating 210 bar (3000 psi), benchmarking HydraForce 2. Its service life is 2 times that of its domestic peers   Technical parameters of AAK E-PR10-32 pressure reducing/relieving cartridge valve: Pressure Rating: 207 bar (3000 psi) Flow Rating: 30.3 lpm (8 gpm) Max. Internal Leakage: 82 ml/min (5 in³/min) Note: Port 2 to 3 at 207 bar (3000 psi) Temperature: - 40℃ ~ + 120℃ (Std. Buna N Seals) Cavity: 10-3   AAK E-PR10-32 pressure reducing/relieving cartridge valve, benchmarking HydraForce PR10-32, has been approved by customer in Russia. You are welcome to give it a try.   AAK HYDRAULIC CARTRIDGE VALVES (694) 2023-10-16 https://www.aakindustry.com/info , -detail/pressure-reducing-relieving-valves- aak , 694

On the way home from work on Friday, I saw someone selling sweet potatoes, which suddenly reminded me of the story I had with a sweet potato peddler last winter. I remembered one particularly cold day last winter, a Chinese person from Shanghai came to Ningbo to source for a Chinese solenoid valve manufacturer for an American customer. AAK was his first stop, and the meeting lasted a long time. It wasn't until 5:30 pm that he left with satisfaction. I walked out of the factory and felt extremely cold outside. At this moment, I received a call from my wife, who said that it was particularly cold outside today and asked me to come back early. Dinner was already ready. I was very happy when I received this call, thinking that the steaming dinner at home was waiting for me, so I hurried home. On the way home, I found a person standing by the roadside. In front of him was a round stove with a pile of sweet potatoes on it. It turned out to be a peddler selling sweet potatoes while roasting sweet potatoes. I can see that he is shivering in the cold wind, but not many of these piles of sweet potatoes have been sold. I thought to myself that his task for today has not been completed yet, and the benefits for the day have not yet been realized, so he must persist here. And I, on the other hand, can immediately return home and have that steaming dinner. By comparison, compassion arose naturally. I bought 8 sweet potatoes from him in one go, and I thought to myself, if I buy one more sweet potato from him, I can make him go home earlier. I bought 8 sweet potatoes and went home with a sense of satisfaction along the way. There's nothing wrong with this sense of satisfaction, after all, I did a moral kindness and helped him. But I also have a sense of superiority, I thought to myself, after all, I am a small boss of a Chinese solenoid valve manufacturer, he is just a peddler. I returned home with this sense of satisfaction and superiority. Sitting down at the dining table, I remembered the peddler selling sweet potatoes and suddenly realized that my realm was very low. I helped him, in Buddhism, it's called giving. When I was giving to this peddler, I had a sense of superiority that was condescending. This kind of help was very self-centered and not selfless. People need to help each other, but when you help others, don't think you are one level higher than the person being helped. If I, a small boss of a Chinese solenoid valve manufacturer, urgently need help in a special occasion in the future, and in this occasion, perhaps a peddler helped me selflessly. When the peddler gives me a helping hand, if he is very self-centered, he won't help me. So I understand that the peddler selling sweet potatoes is certainly shivering in the cold wind of nature. In fact, I, a small owner of a Chinese solenoid valve manufacturer, am also shivering in another cold wind, and the wealthy on the list may also often shiver in a special cold wind. People need help from each other, and more need for selflessness. AAK, a China solenoid valve manufacturer, has been on the road, whether in the cold wind or warm sunshine. AAK HYDRAULIC VALVES (592) 2023-05-27 https://www.aakindustry.com/info , -detail/solenoid-valve-manufacturer-aak592

Ryan is from a hydraulic equipment company in Brazil. In the first half of this year, they had a hydraulic logistics equipment complained by users that the control was abnormal. The after-sales engineer found that the instantaneous peak pressure of the hydraulic cartridge directional control valve was too high during the reversing process, which affected the function of the hydraulic cartridge directional control valve and led to unstable equipment control, so the hydraulic cartridge directional control valve had to be replaced. The hydraulic cartridge valve manufacturer thought that the hydraulic cartridge directional control valve was produced according to the drawing, and its function and accuracy were up to standard. The valve was tested separately and no abnormality was found. The after-sales team was helpless, and the boss asked Ryan to re purchase the hydraulic cartridge directional control valve to solve the after-sales problem first. Ryan has no idea and no direction. He spent a week without any results. Ryan found me under the introduction of his customer Bernardo, who is also a customer of AAK Hydraulic Valve. After learning Ryan's difficulties, according to his hydraulic schematic diagram and hydraulic cartridge directional control valve drawing, AAK engineers judged that the unstable control of the equipment was probably due to the original design of the hydraulic cartridge directional control valve, which had hidden dangers. I told Ryan that redesigning the hydraulic cartridge directional control valve and testing it might solve the customer's complaint at one time. After Ryan learned that AAK was 90% confident, he paid the development fee the next day. After 45 days, AAK sent 8 samples of hydraulic cartridge directional control valves. Last week, Ryan informed by email that it has been 3 months since he replaced with AAK hydraulic cartridge directional control valves. The customer is satisfied with the operation of the equipment and the control has been normal. Their engineers disassembled our samples and admired our minds. In fact, our attempt is also very simple. A damping orifice with a length of 3mm and a diameter of 2mm is added inside the hydraulic cartridge directional control valve, which can throttle the rotation of the motor, further increase the back pressure, reduce the differential pressure borne by the hydraulic cartridge directional control valve, and finally ensure the stability of the equipment rotation control. I told our engineer that the customer admired your mind. He told me that the optimization of the design of the hydraulic cartridge directional control valve was also associated with the strike of a machine tool in our workshop last time. 1. Why did the machine tool strike? Because the machine tool was overloaded, the fuse in the control panel was blown. 2. Why did overload occur? Because the lubrication of the bearing was insufficient. 3. Why was the lubrication of the bearing insufficient? Because the lubrication provided by the pump was insufficient. 4. Why was the lubrication provided by the pump insufficient? Because the pump shaft was worn, it rattled. 5. Why was the pump shaft worn? Because there was no filter at the inlet of the lubricating device, small metal chips entered the lubricating system, causing wear of the pump shaft. 6. Our coping strategy: add a filter at the inlet of the lubricating device. A simple action can effectively solve this problem and prevent it from happening again. Ryan learned that there was such a small episode, and he was very pleased with our technical team. At the same time, he told me privately that his boss was also very fond of AAK and suggested that he should discuss more difficult and miscellaneous problems of the hydraulic cartridge directional control valve with AAK. AAK hydraulic cartridge directional control valve is not only the right medicine, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-directional- control-va , lves-aak364

Galeno, from Spain, has cooperated with AAK for 2 years and tried several non- standard customized hydraulic cartridge pressure control valves. At the beginning of this year, they developed a hydraulic windlass to be promoted in the exhibition. They need a hydraulic cartridge pressure control valve for the hydraulic system of the windlass. Galeno got samples from local manufacturer of hydraulic cartridge pressure control valves. After the commissioning, the pressure control of the equipment is unstable. The engineer judged that the cavity of the hydraulic manifold was off center, resulting in unstable pressure control of the hydraulic cartridge pressure control valve after being screwed in. The hydraulic manifold manufacturer needed 2 months to re sample, but the exhibition was less than 50 days, Galeno was worried. Galeno tried to find a new hydraulic manifold manufacturer. When I received his inquiry for hydraulic manifold, I was a bit surprise. After communication, I learned that he encountered unstable pressure control of hydraulic cartridge pressure control valve. I told him that under similar circumstances, it is not necessary to re produce the hydraulic manifold. 1 year ago, AAK developed a specially designed hydraulic cartridge pressure control valve, which was specially designed to coordinate with the off center cavity of the hydraulic manifold. Galeno compared the technical parameters of the AAK hydraulic cartridge pressure control valve and it basically matched the hydraulic system of their hydraulic windlass. 2 weeks after the sample was sent, Galeno informed that the installation of AAK hydraulic cartridge pressure control valve to the equipment was smooth, and the machine test was normal. The prototype was already on the way to the exhibition. His boss was very satisfied with this urgent solution. I told him that the unique design of AAK hydraulic cartridge pressure control valve was beyond the imagination of most hydraulic valve manufacturers. We got inspiration from an old customer. The customer purchased the hydraulic manifold block and the hydraulic cartridge pressure control valve from 2 different factories. After the installation was abnormal, the two factories passed the buck. At that time, we imagined whether it was possible to let the hydraulic cartridge pressure control valve match the hydraulic manifold block with off center cavity, or vice versa. AAK technical team has figured out that the middle thread can be used in the hydraulic cartridge pressure control valve, that is, the floating structure. The connection area of the port can be optimized, and the center of the thread position can be positioned to maximize the flow capacity and minimize the eccentric influence of the hydraulic manifold block cavity. The diameter of the valve shoulder at the thread provides guidance to ensure the accurate alignment of the thread. The space of the valve shoulder is sufficient, which increases the flexibility of the installation torque and is not easy to damage the torque. The installation torque space can minimize the impact of hydraulic pressure on the valve and is conducive to pressure control. AAK hydraulic cartridge pressure control valve, specially designed to match the hydraulic manifold block with off center cavity, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-pressure-control- valves- , aak363

Bemus is from a hydraulic equipment manufacturing company in Greece. As an old purchaser, he has been working smoothly, but had trouble with a hydraulic directional control cartridge valve. In the second half of last year, they wanted to test a hydraulic power unit for drilling equipment. The shaking was serious during the equipment commissioning, which was caused by the sudden impact of the hydraulic directional control cartridge valve under the high- pressure closed circuit. The original hydraulic directional control cartridge valve manufacturer explained that the hydraulic system pressure was too high. Their engineers asked Bemus to re-purchase the hydraulic directional control cartridge valves. After a week, there was no result. Bemus was worried. Bemus found AAK in B2B and left a message on our website: How to make the hydraulic directional control cartridge valve without impact under the high- pressure closed circuit? After several rounds of communication, we learned the above problem that he encountered in purchasing of the hydraulic directional control cartridge valves. According to the video of equipment abnormality and the production drawing of hydraulic directional control cartridge valve sent by him, AAK engineer was 90% confident to eliminate the abnormality caused by the impact force. Bemus requested AAK to make samples. After 50 days, AAK sent 12 samples of hydraulic directional control cartridge valves. 6 weeks later, Bemus said that the trial run of their equipment was successful and the prototype had been delivered to the customer. AAK hydraulic directional control cartridge valve, based on the unloading valve spool, made 3 small changes to achieve pressure release. The optimized hydraulic directional control cartridge valve reduces the oil pressure in the high-pressure closed circuit and avoids sudden impact. Its stability can better control the equipment operation. 1. The unloading valve spool is arranged in the valve spool, and the control piston is connected with the push rod. The control piston can open the valve spool, and the inlet and outlet are connected, thus realizing reverse flow. 2. The unloading valve spool is connected with the spring seat, one end of the spring is fixedly connected with the top of the valve body, and the other point is connected with the spring seat. When there is no pressure oil in the control oil port, the pressure oil can only flow from the passage port to the outlet, and cannot reverse flow. 3. The bottom of the unloading valve spool is processed into a "convex" shape, which plays the purpose of unloading before the valve spool. When the pressure at the outlet is high, the control piston pushes the unloading valve spool first. When the pressure at the outlet decreases, the unloading valve spool connects the inlet and outlet. AAK hydraulic directional control cartridge valve, no impact force, and stable, you can also try it! https://www.aakindustry.com/info-detail , /directional-control-cartridge-valves- aak506

The supplier who has cooperated for 3 years has failed to test the hydraulic cartridge flow control valve for 3 times. After AAK took over, the accuracy requirements were met at one time for the sample. The surface roughness of the inner hole of the hydraulic cartridge flow control valve was 0.15, and the cylindricity error was controlled within Φ0.003mm, the operating efficiency of the hydraulic system was also improved from 5% to 10%. Brand finally came to the sunny day from the rainy day for more than 30 days. Brand is from Brazil. In March this year, he sent me an inquiry for customized high-precision hydraulic cartridge flow control valve. The surface roughness of the inner hole is Ra0.2, and the cylindricity is Φ 0.003mm. Compared with the conventional hydraulic cartridge flow control valve, the precision is improved by nearly 10%. The cylindricity and the surface roughness of the inner hole are the core of the valve hole precision. There are no more than 5 hydraulic cartridge valve manufacturers in Ningbo that can successfully sample at one time. Seven days later, Brand told AAK that the price was 20% higher than that of the other hydraulic valve manufacturers. With such a large difference, I knew that there was no comparability. The price and hydraulic cartridge flow control valve were visible, but the manufacturing quality was invisible. 40 days later, Brand asked by email how long it would take to sample the hydraulic cartridge flow control valve quoted last time. I was a little surprised. After communication, we learned that the he chose the manufacturer who has cooperated with them for 3 years to make samples for this high precision hydraulic cartridge flow control valve, but proofing failed for 3 times. There was still a 5% discrepancy on the surface roughness and cylindricity of the inner hole of the hydraulic cartridge flow control valve, which could not be achieved all the time. Their engineer blamed brand for poor procurement, and the boss was also unhappy with him. I told him that an American customer of AAK encountered similar problem a month ago, AAK solved it for him. When Brand learned of our successful case, he saw hope and was relieved. After 20 days, the samples of hydraulic cartridge flow control valve were sent successfully 2 weeks later, Brand informed that the surface roughness and cylindricity of the inner hole of the AAK hydraulic cartridge flow control valve and the accuracy parameters not only met the standard, but also improved by more than 10% compared with their original requirements. What's more surprising is that the overall operating efficiency of the system was also improved from 5% to 10% when the AAK hydraulic cartridge flow control valve was installed, which surprised their engineers. We were also complained about the surface roughness and cylindricity of the inner hole 5 years ago. Now AAK uses rolling technology to replace the traditional cutting method, uses rollers to roll the metal surface, flatten the convex part of the surface, and make the concave part bulge, and then process it into a smooth surface like mirror. The details of rolling technology need skills. The surface roughness of the valve hole processed by an old experienced craftsman will be nearly 1% higher than that of grinding, which is why we can reach Ra 0.15, and the cylindricity error is controlled within 0.003. After the working face is hardened, the wear resistance and fatigue strength are increased, which is also the advantage and feature of this process, but it requires experience to master it skillfully. AAK hydraulic cartridge flow control valve, high precision, high efficiency, welcome to try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-flow-control- valves-aak3 , 62

What is the analogy for the relationship between the sales personnel of hydraulic manifold manufacturers and the buyers of importers? The teacher- student relationship may be the most appropriate. A few days ago, my leader complained about the teacher of his son. He asked the teacher twice, 'How has my son been doing at school lately?’ but did not get reply. I was stunned for a moment and suddenly remembered, a few years ago, I also asked customer Lina such a silly question, ‘How did Heidi, a sales representative of hydraulic manifold manufacturer AAK, communicate with you?’ Chinese elementary school teachers need to manage a class of 40 or 50 students, and they can only remember a few children who are particularly obedient or mischievous. For those they are not paying attention to, how can the teachers answer you? Besides, what about your child? Don't you have any idea? There are also questions like this that require the teacher to report to you, which can easily cause the teacher's aversion. Just like I asked Lina, ‘how did Heidi from hydraulic manifold manufacturer AAK communicate with you?’ This kind of question is impolite, and the customer basically responds perfunctorily. The correct way to open it is: Lina, Heidi from hydraulic manifold manufacturer AAK, thinks too much. Every time I communicate with her, I feel too tired. She has been bothering you lately, thank you.’ The very interesting aspect of human nature is revealed at this moment, and Lina is likely to deny or comfort me, saying, 'It's not as exaggerated as you said, but it's actually okay.'. The teacher-student relationship in school is the same. For parents of mischievous children, the correct communication posture with the teacher is not to praise their children, but to belittle them, so that the teacher understands that you know how troublesome your children are, and the teacher has to work harder for your children than other children. Implying a kind of understanding towards the teacher, it is naturally welcomed by the teacher. In business, when it comes to bringing people closer, sometimes a few thoughtful words may make them realize your uniqueness. Of course, to be a blacksmith, you need to be tough yourself. If the manufacturing quality of hydraulic manifold manufacturers is unstable, no matter how good customer relationships are, they cannot withstand the test of time. Managing the relationship with the teacher well can definitely add points to the child's future. Similarly, if hydraulic manifold manufacturers handle customer relationships well and reach a consensus on trust, placing orders becomes easier. Hydraulic manifold manufacturer AAK, focuses on manufacturing quality and also has the correct communication posture. AAK HYDRAULIC VALVES (693) 2023-10-15 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak69 , 3

Peder is from a hydraulic equipment company in Peru. They mainly focus on logistics transmission hydraulic equipment. At the beginning of this year, customers complained about the unstable control and inaccurate positioning of the lifting hydraulic power unit they sold. The after-sales server judged on site that the problem was caused by the hydraulic cartridge needle valve in the system, but after the manufacturer's inspection, the parameters of the hydraulic cartridge needle valve met the requirements. The engineer asked the original manufacturer to optimize the hydraulic cartridge needle valve, but the manufacturer was unable to do it and gave up. Peder contacted more than 10 hydraulic cartridge valve manufacturers, but none of them had solution, Peder was very anxious. Peder found AAK website when searching in Google, and the background showed that he stayed for 9 minutes. He sent an email to ask if AAK has any optimization plan for the unstable control and inaccurate positioning of the equipment during operation caused by the abnormal hydraulic cartridge needle valves? According to the schematic diagram of hydraulic system and production drawings of hydraulic cartridge needle valve provided by Peder, after analysis, AAK engineers found that the original hydraulic cartridge needle valve design had shortcomings, and suggested a solution. Peder saw the hope and asked AAK to optimize the original design and make samples. After 45 days, AAK sent 40 hydraulic cartridge needle valves. Yesterday, Peder sent an email to inform that after using AAK hydraulic cartridge needle valves, the equipment has been running for more than 6 months. The customer has no complaints about unstable control and inaccurate positioning. AAK engineers only used a 6mm chamfer to remove the hidden danger of the original hydraulic cartridge needle valve. The overall flow coefficient of the hydraulic cartridge needle valve is required to increase with the increase of the opening. The inclination of the flow passage will have an impact on the pressure control of the throttle structure. The chamfering can reduce the generation of eddy currents, which guarantees the stability of the hydraulic cartridge needle valve from the source. AAK processed a 6mm chamfer at the chamfer position of the flow passage. This small trick reduced the average turbulent kinetic energy by 73%, reduced the pressure drop distributed at the outlet, and ensured the stability of the hydraulic cartridge needle valve. The flow can be adjusted steplessly to move or rise accurately and controllably under load, and the positioning is accurate. AAK hydraulic cartridge needle valve is stable in control and accurate in positioning. You can also have a small try! https://www.aakindustry.com/info-detai , l/needle-valves-aak434

Ewalz is from Turkey, and mainly purchases standard parts of hydraulic cartridge valves from Ningbo China. Recently, they developed a hydraulic manifold that requires the use of SUN proportional valves. He purchased it from a proportional valve manufacturer in Ningbo, and after 2 weeks of operation, the equipment experienced significant vibration. The on-site engineer found that the proportional valve was severely stuck. The original hydraulic valve manufacturer stated that this proportional valve is a replica of SUN, with fully calibrated parameters, but there are differences in performance. Ewalz was speechless and had to look for a new hydraulic valve manufacturer for this proportional valve. Ewalz browsed the AAK hydraulic valve website, stayed for nearly 15 minutes and left a message: 1.Does AAK have an existing program for benchmarking SUN proportional valves? 2.Can AAK completely solve the problem of valve spool jamming, vibration and noise? After communication, it was learned that the hydraulic manifold they developed was very tight on time, they had no time to customize it and could only choose the existing SUN proportional valve. The proportional valve produced by the original valve manufacturer has the same function as SUN, but has poor performance. This SUN proportional valve is widely used, and AAK have a record of 6 shipments last year. There has never been any jamming of the valve spool, and we have inventory, which fully meets his requirements. 2 weeks after AAK sent the SUN proportional valve samples, Ewalz informed us via email that the hydraulic manifold debugging was successful. 2 months later, Ewalz informed us that their engineers were satisfied with the AAK proportional valve. The root cause of unsatisfactory performance of the original valve manufacturer's SUN proportional valve lies in its accuracy. The vast majority of proportional valve manufacturers have a cylindricity machining accuracy greater than 5um, which is 70% lower than the SUN standard cylindricity. For the accuracy of proportional valves that is completely in line with the SUN standard parts, there are probably less than 3 hydraulic valve manufacturers in Ningbo China. AAK controls the accuracy of the proportional valve from 3 aspects: 1.AAK proportional valve spool control: The valve spool is produced using a German CNC lathe with one blade and then high-precision cylindrical grinding. The machining error is controlled within ± 1um, and the coaxiality and cylindricity are controlled within 3um. 2.AAK proportional valve hole control: Adopting Swiss honing processing, the accuracy can reach IT6-IT7 level, and the surface roughness can reach Ra0.2- 0.025um. 3.AAK proportional valve spool and hole fitting accuracy control: 30 years of experienced technician operation, fit tolerance zone hole H6, axis g5, fit clearance tolerance can reach 5-12um, valve spool without jamming. AAK proportional valve, no jamming, the manufacturing quality, function and performance, benchmarking SUN, you can give it a try. AAK HYDRAULIC VALVES (591) 2023-05-25 https://www.aakindustry.com/info , -detail/proportional-valves-aak591