Mechanical Hardware

Giacomo from Italy, an old customer of AAK, has been purchasing hydraulic cartridge valves smoothly in recent years. At the beginning of last year, he told me privately that he was a little annoyed recently. The hydraulic needle valves he purchased at the beginning of last year was not corrosion-resistant enough, resulting in a claim for their equipment, the four column hydraulic press. The boss has criticized him 3 times. This hydraulic press is used in a chemical plant. After a few months, the system pressure is abnormal. After disassembling the hydraulic needle valve, it was found that the valve body was severely corroded, and the wear was even more serious. The customer requests to replace the hydraulic needle valves immediately and compensate for the delay cost. The original manufacturer is also willing to replace the hydraulic needle valves, but he can only ensure the corrosion resistance for 6 months. Moreover, this batch of hydraulic needle valves is non-standard, and it takes 2 months to reproduce, so Giacomo is not in a good mood because the hydraulic needle valve manufacturer can not solve the problem completely. I gave our engineers the drawings and working conditions of this hydraulic needle valve. Coincidentally, this hydraulic needle valve is similar to the one ordered by a Dutch customer just 1 month ago, they are both a component of chemical hydraulic equipment. The only change needed is the size of the throttle port. The next day, I replied to Giacomo that AAK would send 40 hydraulic needle valves in 2 weeks to solve the urgent needs. Last week, Giacomo sent an e-mail to inform us that AAK hydraulic needle valves had been used, and the equipment had operated for 9 months without any abnormality. The hydraulic needle valves had no corrosion. The customer was very satisfied and his boss was even more satisfied that they had saved a sum of work delay costs. Giacomo admires that AAK hydraulic needle valves are not only delivered 4 times faster than the original manufacturer, but also has a service life of more than 2 times. Giacomo also told me that because of his performance of solving problems quickly this time, the boss also looked at him differently, paid more and more attention to him, and his good mood came back. AAK hydraulic needle valve has 3 advantages in the chemical industry, and the second manufacturer can not be found in Ningbo. 1. Hastelloy steel imported from the United States, as the preferred material for the valve body of hydraulic needle valves, is suitable for most corrosive media, with super corrosion resistance and wear resistance. 2. AAK hydraulic valve has a large amount of data storage and many existing programs. With UG/SOLIDWORK software, the process data of hydraulic needle valves can be configured in 2 hours, which is 3-6 times faster than that of other hydraulic valve manufacturers. AAK is equipped with Swiss advanced machine tools and its own modified fixtures, which not only has fast production speed, but also avoids human errors. 3. The customer selects AAK hydraulic needle valves for their chemical equipment, and has supplied 2 world top 500 chemical enterprises. AAK hydraulic needle valve, the delivery is 4 times faster than peers, but its service life is more than 2 times. You can also give it a try! https://www.aakindustry.com/info-detai , l/hydraulic-needle-valves-aak270

My friend recommended me to read a book. The title of the book is “courage to be hated”. It is said that it has dominated the first place in the sales list of Japanese books for 300 consecutive days. It's a set of great life philosophy: I have courage, so I'm not afraid of being hated. After reading it, I repeated it for a while. It's very interesting. Being hated may not be necessarily a bad thing. I was wondering, what would happen if a hydraulic valve manufacturer was also hated by its peers? Some people say that being hated by others may also be a fortune. It is a very interesting point of view.   Last month, an Indian hydraulic valve customer privately said that a very strong hydraulic valve manufacturer in Ningbo hated AAK hydraulic valves. I was a little confused at that time. After reading the book "the courage to be hated", I was a little relieved. I think the other way around. A strong hydraulic valve peer especially hates AAK hydraulic valve, which actually sends a signal to AAK hydraulic valve. AAK must have something that he doesn't have, but he wants something. Therefore, I would like to thank this strong hydraulic valve peer. It is the peer's disgusting expression that helps AAK identify its own advantages. In fact, this peer also makes endorsement for AAK at the customer. Think so, why not be relieved? I think human nature is usually like this, because he has done something I can't do, he has something I can't have, and this kind of thing also damages my sense of security, so I hate him. If others hate me, I need to ask myself, why do others hate me? This question seems very difficult to answer because you don't know the starting point of others. If you send it to yourself, you may find the answer quickly. For example, why do I hate someone? For example, a person always likes to show off his wealth, always exaggerates, always flatters the leaders, and so on. These are all things I secretly want to have, but they are difficult to do. Because of this, my sense of security has been damaged, so I hate him.   In AAK hydraulic valve, what have we done to annoy our peers?   1. AAK hydraulic valve dares to announce the chaos in the hydraulic valve industry, pointing out the problems existing in the hydraulic valve industry and the pain points existing in the hydraulic valve industry. 2. AAK hydraulic valve adheres to the manufacturing quality, focuses on the process innovation of hydraulic valves, and pays attention to the research and development of new types, new functions and high service life of hydraulic valves. 3. AAK hydraulic valve is promoted on the Internet every day. It says something that peers have not said or can not say every day, and also helps customers solve the difficult problems encountered on hydraulic valves. In any case, whether the peers hate it or like it, AAK hydraulic valve only adheres to the right path, and then works hard, occasionally looking up at the sky. I know that those who are good at chess have no good skills. Take a road few people take and do something difficult and right. All the difficult things will become simpler, and the simple things will become more and more difficult. The difficult road is never crowded. AAK hydraulic valve is always walking to the customers who are fastidious. https://www.aakindustry.com/inf , o-detail/hydraulic-valve-manufacturer-aak269

Jone is a hydraulic customer from Canada. In recent years, his purchasing of hydraulic valves has been very smooth. However, an urgent order of 200 hydraulic valve blocks in his hand recently gave him a headache. The customer reported that 70% of the hydraulic valve blocks had large coaxiality deviation between the hole and the outer circle, which damaged the thread of the cartridge valve during assembly. The customer requested him to replenish half of the hydraulic valve blocks within 15 days, but the original manufacturer of the hydraulic valve blocks had to surrender. Although the lathe processing parameters were adjusted, and even the hydraulic valve block materials were changed, the hole position drift could not be solved, that is, the coaxiality deviation between the hole and the outer circle was large. Jone consulted more than 20 hydraulic valve block manufacturers before and after. Most of the manufacturers said that they could not completely avoid the drift generated during the drilling process of the hydraulic valve blocks, which could only be controlled between 1-2‰, but the customer's requirements could not be higher than 1‰. A week had passed, and Jone was still unable to give a plan for the aftermath, and his boss was not satisfied. Jone, introduced by his friend Blake, who is also my old customer, sent me an email. According to his hydraulic valve block drawings and the layout of the holes, I told him that during deep hole drilling, there would be symmetry errors between the two cutting edges of the drill bit, or the sharpness of the drill bit would be inconsistent after wear, which would cause the hole position to drift. Under normal circumstances, for example, it is difficult to control the 100mm drift value at 0.1mm, that is, the error of 1 ‰. There are really not many hydraulic valve block manufacturers who can meet his customer’s requirement standard. Even if the hole is reamed after drilling, the hole position drift caused by drilling cannot be corrected. However, 3 years ago, AAK did not adopt this traditional processing method and matured the new processing technology. Jone asked me to help replenish the goods directly. The customer had no time to wait for the samples. Three weeks later, AAK sent a replenishment of 100 hydraulic valve blocks and told Jone not to worry about the problem of hole drift that the original manufacturer could not solve. AAK hydraulic valve block is processed by using the outer circle to adapt to the inner hole, which is not only less than 1 ‰ of the error, but also has no deviation in the coaxiality between the hole and the outer circle. Here is how our workshop processes it: (1)Blanking, with a total length allowance of 2mm. (2)Lathing the left end face to be shiny, rough lathing the outer circle to be φ 35.5mm. (3)Clamp the rough turned excircle at the left end and finish turning the right end face to ensure a total length of 80 ± 0.05 mm. Drill and ream φ 4.9 ± 0.05 mm through hole. (4)Deburr the holes at both ends, and process φ 4.9 ± 0.05 mm holes at the two sharp tips, fine turning φ 34.9 mm outer circle. (5)With φ 34.9 mm excircle as the benchmark to process other dimensions. With φ 4.9 ± 0.05 mm holes machined first, and then φ 4.9 ± 0.05 mm hole is used as the benchmark to process the remaining dimensions of the hydraulic valve block so that the drift error in the processing of φ4.9 ± 0.05 mm hole was corrected in the subsequent processing, and the coaxiality between the hole and the outer circle of the hydraulic valve block was also guaranteed. AAK hydraulic valve block valve hole, no hole drift, high coaxiality precision, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-valve-blocks-aak268

Abel from Dubai, who has been purchasing hydraulic cartridge valves in China for 3 years, has been running smoothly, but he encountered trouble with a hydraulic solenoid cartridge valve that is benchmarking against HydraForce SV12-22. At the beginning of this year, their hydraulic manifold used in logistics vehicles required the SV12-22 hydraulic solenoid cartridge valve. Abel purchased 100 pcs of hydraulic cartridge valves from the original hydraulic cartridge valve supplier in China. 1 month later, their customer complained about the leakage of the hydraulic cartridge valve, and the engineer found that the valve cage of the hydraulic cartridge valve was significantly worn and the valve spool was corroded. The original manufacturer shifted the blame and the brake oil medium used did not meet the standard. Alternatively, materials with a hardness of HRC70 or higher may be used, but the machining accuracy cannot be guaranteed. Abel was helpless and anxious. Abel found AAK. After communication, it was learned that he was in trouble while purchasing the SV12-22 hydraulic solenoid cartridge valve. I told him that the brake oil medium is used in the SV12-22 hydraulic solenoid cartridge valve, even if HydraForce original valve will also have potential failures, and it is necessary to improve the hardness of the material and perform anti- corrosion treatment. Especially in the precision machining process, most hydraulic cartridge valve manufacturers cannot control the stability of accuracy very well. I suggested making samples for Abel directly. After 45 days, AAK sent 30 pcs of improved SV12-22 hydraulic solenoid cartridge valve samples to resolve Abel's customer complaint first. 3 months later, Abel informed us via email that no leakage was found on the AAK SV12-22 hydraulic solenoid cartridge valve samples, and they wanted to re-peat the order for 300 pcs. I think that the accuracy of AAK SV12-22 hydraulic solenoid cartridge valve has received his recognition and reorder. The improved SV12-22 hydraulic solenoid cartridge valve adopts the American SUNNEN honing machine in the valve cage precision machining process, with its SAC size automatic control system. It does not automatically stop until the honing reaches the accuracy set by the system. The upgraded filtration system eliminates impurities in honing oil. Especially for diamond honing stones, processing materials with HRC70 or higher is a perfect match, not only stable but also efficient. Our technicians perform the following operations: first, set the correct machining program on the computer system of the equipment, and then install the rough machined valve cage into the equipment. After starting the program, the equipment automatically completes honing. With the escort of this equipment, the precision of the processed hydraulic cartridge valve cage is stable within 2μm, the roundness can reach 1.5μm. The roughness can reach Ra0.1. But most hydraulic cartridge valve manufacturers do not have such high- end honing equipment, and there are few equipped with diamond honing stones, which is the key to the inability to process high hardness valve cages. AAK SV12-22 hydraulic solenoid cartridge valve is processed with 3 advantages of equipment, and 2 methods of operation. You can give it a try! AAK HYDRAULIC CARTRIDGE VALVES (660) 2023-08-28 https://www.aakindustry.com/info , -detail/solenoid-cartridge-valves-aak660

Friedlich, from Wirth company in Germany, sold the drawworks of oil drilling rigs to the Middle East at the beginning of last year. Six months later, the customer complained that the disc brake controlled by the hydraulic cylinder of the drawworks was weak, resulting in equipment shutdown. The reason was that the hydraulic flow control valve in the hydraulic system was stuck. Friedlich wondered that the same batch of drilling rigs and drawworks had been sold to Canada, Central Europe and other markets for almost 1 year, and there was no such abnormality. The original manufacturer of the hydraulic flow control valves is not sure why it is stuck for half a year, but is willing to offer 30 hydraulic flow control valves for replacement and send them to the Middle East. Friedlich was very worried about such solution without knowing the cause of the stuck valve spool. Sure enough, a batch of hydraulic flow control valves had to be replaced 6 months later. This frequent after-sales service not only costs a lot, but also makes the customer dissatisfied. The boss asked Friedlich to purchase new hydraulic flow control valves with high temperature resistance and durability of more than 1 year as soon as possible to replace the current ones. Friedlich found AAK on the Internet and left a message to us: why does the same hydraulic flow control valves have twice the service life difference in different working scenarios? I was puzzled when I saw this message. I learned the above story after communication. Our engineer checked the drawing of hydraulic flow control valve sent by Friedlich, and there was no problem from a technical point of view. The probability is that the high temperature in the Middle East and the high-frequency operation of the drawworks will lead to high hydraulic oil temperature and thermal deformation of the valve sleeve, which will reduce the matching clearance between the valve sleeve and the valve spool, affecting the movement of the valve spool until the valve spool is stuck. Friedlich learned that when the drawworks work, the oil temperature is above 70 ℃, while the oil temperature of the normal hydraulic system is 30 ℃ -50 ℃. Friedlich seemed to agree with our analysis and asked AAK to send samples of hydraulic flow control valves as soon as possible. AAK engineers know that the core of this hydraulic flow control valve lies in the material selection of the valve sleeve. It depends on the job of our full- time material engineers. After 2 months' efforts, 6 kinds of materials were tested, and a special hot work die steel was determined as the valve sleeve for the hydraulic flow control valve. Its heat fatigue resistance and toughness fully adapt to high-temperature hydraulic oil, and the hardness and wear resistance of the material can also fully withstand the wear of more than 1 year. Eight months after the samples of AAK hydraulic flow control valves were sent out, Friedlich informed us that there was no complaint of valve spool jamming when AAK hydraulic flow control valves were used. I told him that within 12 months, if there was a complaint of valve spool jamming, we would refund all expenses. AAK has a full-time Material Engineer in the selection of materials. He connects with the materials research institute and university laboratories to master new materials at the first time. He is specially responsible for screening, comparison and testing, and matching suitable materials according to the working conditions of the hydraulic valves, instead of general materials in the market., In the selection of raw materials and spare parts, it is targeted from the requirements of working conditions and never goes with the market trend. Especially in the customization of hydraulic valves with high requirements, there are unique methods and cases. AAK hydraulic flow control valve, under high temperature, free of worry in 12 months, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valve-aak267

A few days ago, a colleague complained that Guru, an Indian customer, was not trustworthy. He promised AAK as their preferred hydraulic cartridge valve supplier. Half a year later, he sent samples of the hydraulic cartridge valves shipped by AAK to other hydraulic cartridge valve manufacturers for inquiry. After communication, I learned that Guru had a cartridge valve that had a problem before, AAK helped him solve it, and Guru made a commitment to this colleague.   Whether in work or life, there are too many unsatisfactory things. For example, the promised cooperation has not been implemented; the person who promised to see you did not arrive; the phone promised to you was not called etc.   We should be happy when we listen to the promise from others, but don't take it too seriously. The advantage of this is that you are grateful for it if it is done; it doesn't matter if it is not done. You don't care too much about it, and naturally you won't be too disappointed to hate others.   In terms of concrete implementation, we must accept changes and have a philosophical attitude. Because time is changing, the situation is changing, the environment is changing, and the mood is changing, many variable influences will affect the original commitment. If you can accept the change, you can take good words and promises lightly and understand the difficulties of others. Besides, how should we expect the favors from others, just because they agreed?   I remember that many years ago, we went to Shanghai for training, and we met many local hydraulic valve colleagues in Shanghai, as well as fellow villagers and alumni. We were very happy together. There is an alumnus A, who is the leader of a unit and is equipped with a special car. He sent the car to pick up and drop off wherever we go, which was naturally much more convenient. Everyone thanked him one after another, and he promised: when you come to Shanghai in the future, you must let me know, I will send a car to pick you up.   Soon after, we went to Shanghai for refresher training. The engineer Zhang from the same training group wanted to go to the university in the suburbs to see his daughter. There was no direct bus there. Someone has an idea: let alumni A send a car to drive you there! Engineer Zhang called Alumni A without thinking about it. Alumni A told him that he was in Hong Kong. He was not there. It was not convenient to ask the company to send a car. Engineer Zhang was very angry. He told everyone that alumnus A was a man with empty talk: "Don't tell me if you can't do it".   I advised him: Alumni A said this to everyone, not to you only. Many people didn't take it to heart, just listened to it. Because we don't have much friendship with alumni A, what is the reason for them to pick us up? And alumnus A is also telling the truth. He is not in the company and still occupies the public car. It is really inappropriate. After all, it is the company's car, not his private car. Why should we make trouble for others?   In fact, many times, a word from others makes us have thoughts we should not have, and makes us lose self-knowledge. We should trust the goodwill of others, but we should not take it too seriously.   We should appreciate the kindness expressed by others, but we don't really have to accept the kindness of others. To face life with a grateful heart will always be full of positive energy. A person full of positive energy has the ability to turn others' goodwill into reality.   A person who takes the kindness of others for granted is not qualified to accept the kindness, because you lack a little virtue, and disappointment is inevitable and self-seeking. The same is true for us manufacturing hydraulic valves. If there is only price, no value; only profit, no quality, that virtue is also lacking.   AAK Hydraulic Valve, makes business with a positive mind, and makes friends with kindness. https://www.aakindustry.com/info- , detail/cartridge-valve-manufacturers-aak483

This week, we launched a hydraulic check valve with 3 key elements benchmark SUN CXFA standard parts. This hydraulic check valve is free-flow, nose-to-side check valves are on/off circuit components that allow free flow from the inlet (port 1) to the outlet (port 2) and block flow in the opposite direction. The manufacturing quality of this hydraulic check valve is compared to SUN CXFA; the function of this hydraulic check valve is benchmarking against SUN CXFA; the performance of this hydraulic check valve is benchmarking against SUN CXFA. In 2022, AAK shipped this hydraulic check valve 12 times to 4 customers, and received 4 inquiries within 4 months of 2023. AAK hydraulic check valve 2 major advantages: 1. Low leakage, internal leakage 1 drop/min. 2. 3 key elements benchmark SUN, but the price is less than 70% of SUN. Technical parameters of AAK E-CXFA Hydraulic Check Valve: Maximum Operating Pressure: 350 bar (5000 psi) Capacity: 40 gpm (160L/min) Internal Leakage: 1 drops/min. Cavity: T-5A AAK hydraulic check valve, 3 key elements benchmark SUN CXFA, you can also have a small try. AAK HYDRAULIC VALVES (564) 2023-04-17 https://www.aakindustry.com/info , -detail/check-valve-aak564

Margaret is from a hydraulic equipment company in the United States. At the end of last year, some of their drilling rigs were complained by customers that they were unable to work. The problem was the leakage caused by the wear of the hydraulic flow control valves. The original hydraulic flow control valve manufacturer said that due to long-time high-pressure and high-frequency operation, the wear of the valve body is difficult to avoid, so the hydraulic flow control valves can only be replaced. After half a year, the fault occurs again, and it seems that the hydraulic flow control valves can only be replaced once every half a year. After the boss knew about it, he was not satisfied with this high frequent after-sales service. He asked Margaret to find a new hydraulic flow control valve manufacturer, and added the parameter requirements of high pressure resistance in the inquiry. In the first round, Margaret contacted with more than 10 hydraulic valve suppliers that she was satisfied with in the past, and only 3 said that they could have a warranty period of half a year to 1 year under high pressure. Margaret should not be satisfied with this reply either. After being introduced by one of our old customers, she contacted me. I suggest that she use durability to measure the service life of hydraulic flow control valves. After communicating with their engineers, she requested that the durability of this hydraulic flow control valve be more than 1.5 million times. AAK engineers judged that according to their working conditions and pressure requirements, the material selection of this hydraulic flow control valve is very important, especially the valve body material. After 40 days, AAK sent 10 samples of hydraulic flow control valves. More than 2 months later, Margaret emailed that the durability tests of 3 factories and AAK hydraulic flow control valves had failed. Before sending samples, our engineers tested each hydraulic flow control valve, and the durability of 1.5 million times is unlikely to fail. After checking with Margaret, it was learned that their boss specially asked the engineer to increase the durability test from the original 1.5 million times to 2million times. Margaret said that the other 3 factories have given up re testing, and asked whether we are willing to continue testing? AAK is most willing to do what its peers are unwilling to do. Three months later, the samples of the hydraulic flow control valves were sent again. Last week, Margaret said in an email that AAK hydraulic flow control valves passed the test and is the only manufacturer that can adhere to the samples for half a year. Their teams are convinced that AAK is obsessed with manufacturing quality. The boss was also very satisfied that she found a professional hydraulic flow control valve supplier like AAK. Over the past 13 years, AAK technical team has gained an experience that every customer thinks that the problems they encounter are individual and unique. In fact, we have already solved them here. Why do you have personalized questions? That's because none of your peers can help you solve it, let alone promise. During the test sample period, AAK engineers worked for more than 14 hours every day. After repeated defeats, they finally determined 3Cr3Mo3W2V hot work die steel as the valve body material and made special treatment on heat treatment. The mechanical stress is more than 10 times that of other steels. The hardness, strength, wear resistance, stability and thermal conductivity are completely consistent in the whole material section, so as to ensure that the hydraulic flow control valves can pass the test of 2million times under high pressure. AAK hydraulic flow control valve, 2 million times of service life, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak266

Last March, Jhon from Canada left a message on the hydraulic cartridge valve manufacturer AAK website: Is your valve cage processing using Japanese equipment? It is the first time for me to notice such a message. After several rounds of communication, I learned that the hydraulic cartridge pressure control valves that Jhon purchased from the original manufacturer had unstable accuracy cages, which posed a problem to their equipment. He wants to find a hydraulic cartridge valve manufacturer who can control the valve cage accuracy of each hydraulic cartridge pressure control valve within 2μm. I told him that the accuracy of the valve cage of the hydraulic cartridge pressure control valve depends on the production equipment, but it is also related to the technician and the quality system of the factory, especially for non-standard hydraulic cartridge pressure control valves. Hydraulic cartridge valve manufacturer AAK can use Japanese imported equipment from Hasegawa to produce the valve cage of his hydraulic cartridge pressure control valve. Jhon seemed to see hope, and the next day, we received the trial order for his hydraulic cartridge pressure control valves. After 40 days, AAK sent out the samples of the hydraulic cartridge pressure valve as scheduled. Last weekend, Jhon emailed us to inform that the hydraulic cartridge pressure control valves shipped by AAK have been installed on their equipment for 8 months. The stability of the precision of the valve cage of the hydraulic cartridge pressure control valve has satisfied their engineers. This non-standard hydraulic cartridge pressure control valve cage is machined using the Japanese imported Hasegawa lathe used by AAK. The structure of the equipment can achieve ultra-low vibration machining, and it is equipped with a CNC parking system, which ensures the stability of machining accuracy. At the same time, its rotational speed can reach 30,000 revolutions per minute, and the 12 position turret can be freely matched with a powered tool handle, which is highly favored by our technicians for its flexibility in processing. After each valve cage is processed, AAK operators will use a micrometer caliper to measure the machining dimensions of each valve cage. AAK hydraulic cartridge pressure control valve, machined by Japanese equipment, with accuracy within 2μm. You can also give it a try. AAK HYDRAULIC CARTRIDGE VALVES (780) 2024-02-27 https://www.aakindustry.com/info , -detail/pressure-control-valves-aak780

Last week Logan said that he needs to order 1,000 hydraulic check valves at one time and asked me to hurry up to prepare materials. After reading this email, I felt very good. Logan comes from a Canadian hydraulic equipment company. Two years ago, he found AAK Hydraulic Valve on the Internet. The hydraulic elevator to be developed by their company needed to use special hydraulic check valves. He asked AAK to make 20 hydraulic check valve samples urgently according to his drawings, and promptly paid the development cost. According to the drawing, the O-ring of the hydraulic check valve is a little special, and each component needs to be customized. It took more than 2 months for AAK to successfully finish and send 20 hydraulic check valves. Strangely, after samples were sent, there was no news in 9 months until Logan's email last week. Logan also frankly told us why we did not receive the feedback until now. It turned out that their company had selected 3 factories to test the samples of this hydraulic check valve. In the first test, the samples from all the 3 factories reached the standard, so they chose the cheapest one to place an order. Six months later, they knew the trouble was coming. The customer reported that the lift was unable to rise. After checking, it was found that the hydraulic check valve leaked and did not maintain pressure. The reason for the leakage was that the O-ring of the hydraulic check valve was out of the groove and worn. Logan contacted the original hydraulic check valve manufacturer, and the manufacturer replied that the O-ring was a quick-wear part. If the customer used it frequently, the quick-were part needs to be replaced every 6 months, and the O-ring replacements can be provided free of charge. However, in such frequent after-sales, the sealing ring is a small amount of money, but the after-sales cost is the big trouble. Moreover, the customer may not accept it. Logan checked the original archived samples again to verify the reliability of the O-ring of the hydraulic check valve, and found that the O-ring of AAK was different from that of other manufacturers. He also remembered that AAK was the latest one to deliver samples at that time. Their engineers compared and tested the O-ring of the hydraulic check valves again, and found that the O-ring of AAK was not only different in material, but also different in structure. How does AAK do it? The selection of O-ring should not only be based on the working conditions of hydraulic check valve, but also strictly control the size. With the special design of this hydraulic check valve, the pressure on the O-ring comes from the inside. The outer edge of the O-ring will contact the outer edge of the groove. The compression ratio can only be between 1% and 3%. Considering that the shrinkage of the O-ring will cause tolerance, AAK has customized samples for 8 times to determine the allowable tolerance range of O- ring, which is 15% higher than DIN 3771 and ISO 3601/1 standards. Finally, the ultra wear-resistant PU polyurethane rubber O-ring with reasonable size was selected, and it was guaranteed that the O-ring would not fall out of groove and wear within 1 year. AAK hydraulic check valve, with O-ring that does not fall off groove and wear, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-check-valve-aak265

Recently, we launched a hydraulic proportional cartridge valve equivalent to HydraForce standard part TS08-27. It is a pilot operated spool type, proportional pressure relieving valve. The regulated pressure is inversely proportional to the input electrical current. Last February in 2022, a hydraulic cartridge valve customer in Russian found AAK when looking for a hydraulic cartridge valve manufacturer in China on Google. He sent us an inquiry for 20 pcs of HydraForce Pressure Relieving Proportional Cartridge Valve TS08-27. For this model, very few cartridge valve manufacturers in Ningbo have existing production procedures. At that time, AAK was still in developing it for a listed company in Canada. We told the Russian customer that after the development is finished, AAK still needs at least 1 year to test the function and performance. We will keep you informed when this Pressure Relieving Proportional Cartridge Valve passed the 1 year of durability testing. This June, we were very happy to learn from the Canadian customer that AAK Pressure Relieving Proportional Cartridge Valve E-TS08-27 has passed their internal testing after 1 year of use, they are preparing for the 2024 buy plan and will send us the official order very soon. After knowing this, the Russian customer asked us to quote based on an annual order qty of 500 pcs directly. Today, we received the official PO for it. AAK hydraulic pressure relieving proportional cartridge valve 2 advantages: 1. Hysteresis per cent ﹤3%, benchmarking HydraForce quality 2. Its service life is 2 times that of its domestic peers Technical parameters of AAK E-TS08-27 pressure relieving proportional cartridge valve: Operating Pressure: 241 bar (3500 psi) Flow rating: 19 lpm/5 gmp DP = 7.8 bar (113.3 psi) ±10%, Cartridge Only, flow from Port 1 to Port 2, coil energized. Maximum pilot flow rate: 0.76 lpm (0.2 gpm) Hysteresis per cent: ﹤3% Pressure appreciation: A: 40 psi/gpm; B: 50 psi/gpm; C: 28 psi/gpm Cavity: 08-2 The newly launched AAK E-TS08-27 pressure relieving proportional cartridge valve, benchmarking HydraForce TS08-27, has been approved by customer in Canada after 1 year of testing. You are welcome to try it out. AAK HYDRAULIC VALVES (659) 2023-08-28 https://www.aakindustry.com/info , -detail/proportional-cartridge-valves-aak659

Edmund from Germany has purchased hydraulic valves from AAK for more than 3 years. He emailed me a question this morning: the SiCr alloy steel pressure spring is used in hydraulic pressure reducing valves, and its durability can not reach 1million times or more? I asked him why he suddenly asked so? He frankly told me that he had encountered problems when purchasing hydraulic pressure reducing valves from Germany factory. At the same time, he also saw an article of AAK that " For hydraulic pressure control valves that German manufacturers were unwilling to solve, AAK used special spring to ensure a service life over 1 year”, so he wanted to discuss it with me. At the beginning of last year, the hydraulic pump of the excavator they sold often had insufficient startup pressure. The problem lied in the hydraulic pressure reducing valve of the hydraulic pump. The pressure of the hydraulic system was unstable because the pressure spring of the hydraulic pressure reducing valve was deformed. Since this excavator has been in use for less than 1 year but the hydraulic pressure reducing valves must be replaced. Edmund contacted the local original manufacturer to replace several hydraulic pressure reducing valves. The manufacturer replied that the hydraulic pressure reducing valve was produced according to the standard, and the strength limit and elastic limit of the piano wire used for the spring were in line with the requirements. The problem was that the user's use frequency and working pressure were too high, problem was caused by improper use. This time, they were willing to replace it for free, and they would have to pay for it next time. Edmund is aware that if there is a complaint about one device, there may be a complaint about the second one. This time, the replacement of the hydraulic pressure reducing valve can only solve the current problem. Edmund began to contact nearly 20 manufacturers of hydraulic pressure reducing valves. Most of them said that the spring made of piano steel wire was the best material. Edmund asked several factories to provide samples for testing to simulate the high frequency and high pressure of excavators. After more than 2 months of durability testing, the durability of the spring failed to pass 1 million times, and basically began to be unstable after 400,000-600,000 times. I joked that he found the right person to solve this problem. The spring of piano steel wire is indeed a good material, but good materials do not necessarily produce good finished products. We strictly follow 3 steps in the selection of spring. The pressure spring of this hydraulic pressure reducing valve really needs better materials to pass the durability of 1 million times. AAK Hydraulic Valve began to innovate the pressure spring 1 year ago. At the request of the customer, AAK technical team spent 24 days, tested samples for 6 times, compared 3 kinds of springs with good elasticity, and selected the special SiCr alloy steel spring, which can pass the durability of 1 million times. SiCr alloy steel spring has high temperature resistance, high rigidity, anti relaxation and long service life. It can be used for 1 million times under high stress conditions. Edmund asked me to send samples. According to his hydraulic pressure reducing valve drawings, I told him that samples could be sent in 4 weeks. I also told him that using AAK hydraulic pressure reducing valve with SiCr alloy steel pressure spring, he would no longer have to worry about complaints. AAK hydraulic pressure reducing valve is protected by special SiCr alloy steel spring under high stress, with a service life of 1 million times. You can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-pressure-reducing-valve- aak264

Last Monday, Yvonne ordered 1,000 hydraulic pilot operated relief valves and stressed that all parameters should be in line with the hydraulic relief valve samples of last year. It seems a little strange. After we sent the samples last year, Yvonne said that the parameters were up to standard, but the plan changed. She would no longer purchase this hydraulic pilot operated relief valve. After several rounds of communication, it was learned that Yvonne changed the manufacturer last year and had suffered a loss, so she returned to AAK to make up the order. Yvonne, from a Canadian equipment company, started cooperation with AAK last year. At the beginning of last year, their company planned to develop a hydraulic power unit, which needed to purchase a hydraulic pilot operated relief valve. After a round of screening, Yvonne chose 3 hydraulic relief valve manufacturers to test samples, and AAK was one of them. Finally, Yvonne placed the order with the hydraulic relief valve manufacturer with lowest price. In more than half a year, customers complained that the hydraulic pressure of the equipment was unstable. The pilot operated relief valve in the system is used as a safety valve, but the valve spool and valve body are worn and the coaxiality is deviated, resulting in abnormal valve opening and sharp rise of system pressure, resulting in equipment failure. According to the feedback from the manufacturer of the original hydraulic pressure relief valve, this hydraulic pilot operated relief valve needs to meet the high-pressure working condition of 450bar and cannot withstand such high- frequency use. It can only be guaranteed the service life of half a year, and has to be replaced every half a year for after-sales service. The boss was not satisfied with the half year service life of this manufacturer and asked to change the hydraulic relief valve supplier. According to the records of the after-sales department, Yvonne found that among the samples from 3 factories, only the equipment installed with AAK hydraulic relief valve has no complaint record. The service life of the other one was about 10 months, but AAK was normal after 1 year. I told Yvonne that according to previous customer cases, the 18 month service life of this type of hydraulic relief valve under 450bar high pressure is not a problem, because we are benchmarking the service life of 2 million times of HAWE. She also wants to know why the service life of AAK hydraulic pilot operated relief valve is better than that of other factories? The selection of materials is the key to resist 450bar high pressure. Generally, AAK selects A+ material to replace the A material used by the international top brands. For example, the 20crni2mov high carburized bearing steel imported from Germany, is used as the valve spool of this hydraulic relief valve, combined with the carburizing pretreatment process, through the secondary quenching + cryogenic treatment + low temperature tempering process, it is cooled to 650 ~ 700 ℃ and then discharged after it is cooled to 450 ~ 500 ℃. The microhardness is 237 ~ 247 HV, and its wear resistance and contact fatigue performance are increased by more than 3 times, so the wear of valve spool is no longer worried. Yvonne privately told us that the boss was very satisfied with her ability to quickly solve problems. AAK hydraulic relief valve with a service life of 2 million times will be their fixed supplier in the future. AAK hydraulic pilot operated relief valve, is high pressure resistant, with 2 million times of service life, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-relief-valve-aak263

Nowadays, people's recognition of the quality of "Made in China" products is much higher than that of 10 years ago. In fact, this recognition is still lagging behind. For example, the Chinese hydraulic valve manufacturers at the head can rank among the top 20% of the world's hydraulic valve industry only from the manufacturing quality of hydraulic valves. This is also an explanation for why Sun hydraulics directly import finished products from China. I believe that in 10 years, the hydraulic valves engraved with "Made in China" will account for more than 70% of the weight. AAK Hydraulic Valves, 13 years ago, changed from a hardware enterprise to hydraulic valve production. We started with the manufacturing process and learned by doing. We paid a lot of tuition fees and accumulated the production technology and experience of hydraulic valves. Then slowly improve the technology according to their own production needs, refit some equipment and create some patents. Until now, the sales volume of hydraulic valves has gradually expanded, and AAK technology has gradually moved forward. At the same time, more resources have been invested in research and development to promote more basic and wider application of hydraulic valves. In a word, there is no strong hydraulic valve manufacturing, others are floating clouds. In industrial manufacturing, there is no major technological innovation country in the world that did not start with a major manufacturing country (at least once). The advantages of China's hydraulic valve manufacturing industry chain have been self reinforcing in recent years, and continue to attract first-class hydraulic valve brands in the supply chain to set up factories in China. AAK has been OEM factory of hydraulic valves for 3 of the world's top 500 companies for 10 years. The quality control process is more strict than the ISO certification system. It sticks to the manufacturing details of hydraulic valves, focuses on process innovation, and insists on technology research and development. Ensure that each hydraulic valve has anti fatigue, high precision and long service life. What I want to say to the domestic hydraulic valve counterparts is that 20% of the hydraulic valve manufacturers already have quality awareness. What should the remaining 80% of the manufacturers do? Many domestic hydraulic valve peers lack concentration and patience, and specialization is to follow. Because in the past, when we set up enterprises, we could still make money by taking one shot at a time. The vast majority of hydraulic valve manufacturers are money worshippers, not technology worshippers. The vast majority are short-term, not long-term. In the past, they could survive and make money. However, after the construction of the national unified market and under the background of the globalization of industrial products, this kind of thinking will be completely over and impossible. In Japan's manufacturing industry, there is a word called "life dedication", a whole life for one thing. This is the Japanese concept. In fact, the Germans are the same. They have focused on one category or variety for decades or even hundreds of years. This is also the reason why they both are top ones in cutting-edge manufacturing. This is also the direction of AAK Hydraulic Valves. A group of people only work on hydraulic valves all their lives. There is another word in Japan called "one product into the soul". In order to make this product, the soul must be cast into it. To make a product, we should be attentive and soul-bound. I think that "life dedication " and "one product into the soul" constitute the core connotation of Japan's invisible champion. AAK is aiming at the invisible champion of Chinese hydraulic valves, and it acts the same. AAK Hydraulic Valve always focuses on 3 directions, the first is focus, the second is innovation, and the third is internationalization. Globalization is a trend of historical development. Although there are some effects against globalization, the historical trend will not change after all and will not be transferred by people's will. AAK puts "focus, innovation and internationalization" into the soul of the anti fatigue, high precision and long service life hydraulic valves. This is our way. The right way is not far away. https://www.aakindustry.com/info-deta , il/hydraulic-valves-aak262