Mechanical Hardware

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

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

This week, we’d like to introduce a hydraulic cartridge valve equivalent to HydraForce PR10-36. It is a spool type, pilot operated, hydraulic pressure reducing/ relieving valve with internal pilot and internal spring chamber drain, designed to act as a pressure regulating device for secondary 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 PR10-36, along with several other HydraForce standard parts. However, AAK did not have existing programming for PR10-36 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 PR10-36 as per their original samples. Although they can buy PR10-36 from other hydraulic cartridge valve manufacturers in China, they do not trust their quality. Because the quality of the trial orders shipped by AAK last year was very satisfying, they want to develop PR10-36 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- PR10-36 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 cartridge valve E-PR10-36 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-PR10-36 pressure reducing/relieving cartridge valve: Working Pressure: 210 bar (3000 psi) Proof Pressure: 390 bar (5700 psi) Flow Rating: 56.8 lpm (15 gpm) Pilot orifice: 0.51 mm (0.020 in) Temperature Range: -40°C ~ +120 °C (with Buna N seals) Fluids: Mineral based or synthetic hydraulic fluid with lubricating properties Fluid viscosity range:  7.4 to 420 cSt (50 to 2000 ssu) Cavity: 10-3 AAK E-PR10-36 pressure reducing/relieving cartridge valve, benchmarking HydraForce PR10-36, has been approved by customer in Russia. You are welcome to give it a try. AAK HYDRAULIC VALVES (679) 2023-09-25 https://www.aakindustry.com/info , -detail/pressure-reducing-relieving-cartridge- , valve-aak679

Diego comes from Argentina and specializes in drilling hydraulic machinery. All the hydraulic valves he used are purchased from China and the United States, whether they are hydraulic cartridge valves or hydraulic modular valves. A while ago, he stumbled when purchasing a hydraulic check valve that imitates SUN standard parts from a hydraulic valve manufacturer in Ningbo China. During equipment debugging, it was found that the opening pressure control of the hydraulic check valve in the system was unstable. The original manufacturer of the hydraulic check valve stated that this parameter is based on the SUN standard parts, and to fully match the equipment's operating conditions, it can only be optimized on the original standard parts. However, for the quantity is small, the manufacturer is not willing to do this customization. Diego is embarrassed. Diego contacted AAK hydraulic valve. After communication, it was learned that the hydraulic check valve he purchased encountered difficulties with unstable opening pressure control. Based on the working conditions of his equipment, we have determined that the hydraulic check valve equivalent to the original SUN standard component model can be used, and only a little more effort is needed on the hydraulic check valve spring. The unstable opening pressure control of the original manufacturer's hydraulic check valve is rooted in the inadequate spring and machining accuracy. Diego was a bit skeptical. I suggested him trying 10 hydraulic check valve samples of AAK first. If the test runs smoothly, then he can purchase hydraulic check valves in bulk. 3 weeks after AAK hydraulic check valves were sent out, Diego emailed us saying that their equipment was equipped with AAK hydraulic check valves, and the equipment was debugged and passed the testing. The opening pressure control of the AAK hydraulic check valve was stable, and there was no any problem. Their batch order for hydraulic check valves will be sent to AAK in 1 month, but the price needs to be renegotiated because the regular order quantity of hydraulic check valves will be more than 30 times that of the trial order. The reason why AAK hydraulic check valve can replace the one produced by the original cartridge valve manufacturer is because we do not copy industry standards. Whether in terms of material or component selection, it corresponds to the operating conditions of the equipment. 1. Selection of spare parts: The AAK hydraulic check valve adopts American Associated Spring, which has better sensitivity than SUN standard parts, especially the elastic limit and strength limit, far exceeding the domestic carbon spring steel wire. Our spring stability is a powerful guarantee for stable opening pressure. 2. Equipment selection: AAK hydraulic check valve adopts German machine tools, DMG high-precision CNC machining center, and testing equipment from Mitutoyo in Japan. The machining accuracy is also guaranteed. 3. Material selection: The AAK hydraulic check valve is made of corrosion- resistant alloy steel, which adds another guarantee to its durability. AAK hydraulic check valve has 3 major guarantees, not only with stable pressure control, but also with durability. You can also give it a try! AAK HYDRAULIC VALVES (580) 2023-05-09 https://www.aakindustry.com/info , -detail/check-valve-aak580

Last week, the German customer Thorsten sent an order for 1,200 hydraulic counterbalance valves, and said that only AAK and SUN hydraulic counterbalance valves passed 1 million durability tests among the 6 hydraulic valve manufacturers making the samples. However, the price of AAK was 30% lower than that of SUN, and the delivery time was faster. In May this year, Thorsten’s company received an order for a batch of special hydraulic winches. The customer requested that the equipment be guaranteed for at least 1 year of service life. The engineer required that the durability test of the hydraulic counterbalance valve to be purchased by Thorsten must reach more than 1 million times. Thorsten found a local hydraulic counterbalance valve manufacturer to carry out the test. After 100,000 times, the O-ring wear affected the seal. After the sealing ring was replaced, the valve spool and valve body were worn and leaked again after 200,000 times, and the local manufacturer surrendered. Thorsten had to find a manufacturer of hydraulic counterbalance valves with higher durability. In order to avoid wasting purchasing time again, the two schemes were carried out simultaneously. One is to purchase the original SUN hydraulic counterbalance valves, and the other is to find a factory for customized hydraulic cartridge valves. When Thorsten contacted AAK, I told him that the requirement of hydraulic counterbalance valves for 1 million times was not very high. How could local hydraulic valve manufacturer fail? Thorsten said that when testing this hydraulic counterbalance valve, the opening and closing cycle time is set to 5 seconds, the set pressure is 21 PMa, and the flow rate is 9L/min. The wear resistance of the sealing ring, valve spool and valve body is at least 50% higher than that of the conventional hydraulic counterbalance valves. This time, including AAK, there are 6 hydraulic valve manufacturers to make samples. More than a month later, Thorsten said that among the 6 hydraulic counterbalance valve manufacturers, only AAK and SUN hydraulic counterbalance valves have passed the durability test for 1 million times, but the price of AAK is 30% lower than that of SUN. At the same time, AAK can provide a delivery time 4 weeks faster than that of sun. Thorsten especially wants to know why AAK is so strong. AAK hydraulic counterbalance valves are different from peers due to the following 3 points: 1. AAK adopts Japanese special polyurethane rubber sealing ring for this hydraulic counterbalance valve. Under the special working condition required by Thorsten, the durability limit of rubber sealing ring is about 100,000 times only, while the wear-resistant and high-pressure resistance performance of ours is more than twice that of other rubber sealing rings. 2.The 20CrNi2MoV high carburizing bearing steel imported from Germany adopted by AAK, combined with the carburizing pretreatment process and through the secondary quenching + cryogenic treatment + low temperature tempering process, has a microhardness of 237-247HV, and its wear resistance and contact fatigue performance have been improved by more than 3 times. Most hydraulic counterbalance valve manufacturers can not master the key of heat treatment even if they choose this steel. 3.AAK has its own durability test equipment independently developed, combined with NFPA/T2.6.1 standard, each hydraulic counterbalance valve is tested and meets the standard. AAK hydraulic counterbalance valves, benchmarked with SUN, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-counterbalance-valves-aak322

AAK used 3 methods to directly replace a cartridge check valve and a relief valve in the hydraulic system with one hydraulic cartridge relief valve, which not only facilitated installation, but also integrated the functions of the two valves. The manufacturing cost of the hydraulic unit was reduced by 6%, and helped Heller win the order from customer successfully. Heller is from Indonesia. In the second half of last year, their old customer customized a hydraulic power unit. The hydraulic cartridge relief valve used was produced by a cartridge valve manufacturer who has cooperated with them for 5 years. The equipment was successfully debugged, and the customer recognized it after trial use. However, after comparing with the market, the customer asked for a 5% reduction in the price of the equipment. Heller tried to reduce the purchase cost, but failed. Their engineers said that they could only optimize the hydraulic manifold to reduce the cost, but it was too late. The order has been holded for 2 weeks, and Heller was worried. Heller found AAK on Google and stayed on AAK hydraulic valve website for more than 10 minutes. Perhaps the customer cases of optimizing hydraulic cartridge valves stimulated him. He sent an email asking: How long does it take to optimize the original hydraulic manifold and sample? After communication, I learned Heller's dilemma. According to the schematic diagram of his power unit system, AAK engineers found that it was not necessary to adjust the original hydraulic manifold. There were 2 types of valves (check valve and relief valve) in the hydrostatic circuit of the system. If the functions of the 2 types of cartridge valves were integrated, the cost can be saved, and there would be no need for big change for the hydraulic manifold. Heller sent the sample order of hydraulic cartridge relief valve on the 3rd day after learning about the AAK scheme. After 50 days, AAK sent 3 hydraulic cartridge relief valve samples. 3 weeks later, Heller emailed that the commissioning of the dual function AAK hydraulic cartridge relief valve was smooth, and the overall purchase cost was reduced by 6%. Not only did they solve the pending order for the equipment, but their company's profits were also increased. The mind of AAK engineers benefited from more than 10 years of training in German HAWE. AAK achieved a dual function hydraulic cartridge relief valve with 3 skills. 1. This hydraulic cartridge relief valve is equipped with 3 separate fluid channels, which are respectively connected with the high pressure pipeline fluid, the low pressure side fluid and the feeding pressure pipeline fluid in the system. 2. The damper is added to strengthen the positive damping of the overflow function and realize reasonable control of the flow direction, which can replace the cartridge check valve function. 3. Connect the first and second lifting valve spools with a spring, and use the spring and lifting valve spool to make the fluid flow through the specified route as required to realize the dual functions of check and overflow. AAK hydraulic cartridge relief valve, integrating 2 functions into 1, you can also try a small order! https://www.aakindustry.com/info-det , ail/cartridge-relief-valves-aak424

Bront, from Israel, has been in contact with AAK for 3 years, but has not placed an order yet. During this period, there are inquiries about hydraulic cartridge valves, valve blocks and hydraulic manifolds. Although I marveled at the difficulty of doing business with this Israeli customer, I replied to his email in time. Sometimes, Surprise comes and catches you off guard. Bront placed a large order for 950 hydraulic flow control cartridge valves during the period of our CNY holiday. I remember that this hydraulic flow control cartridge valve was inquired in May 2021. At the end of 2021, I was suddenly asked to provide 3 samples. This is the valve benchmarking HydraForce, and we have the stock. We sent the hydraulic flow control cartridge valves directly to him the next day, and then there was no further news from him, until this order was placed, which was more than 1 year from last contact. After communication, it was learned that he was fooled by 2 cartridge valve manufacturers in Ningbo 3 years ago, so he was very cautious about the cartridge valve manufacturers from Ningbo. It can be seen that not only the weak teammates hurt the mood, but also the weak peers hurt the order. Bront told me that each parameter of AAK hydraulic flow control cartridge valve is benchmarking HydraForce, and its function also meets the requirements of their equipment. What worries him most is whether the performance can meet the requirements of the Israeli market. There is no repair in 1 year, no minor repair in 2 years, and no major repair in 3 years. Now 1 year has passed, and AAK hydraulic flow control cartridge valve is normal. It has proved that it has passed the threshold of "no repair in 1 year". Sometimes, without too much language, time is the best answer. I believe that this difficult Israeli customer has been settled by AAK. With our manufacturing quality, stable function and long performance, we impressed him. In the future, I will not worry about his order for cartridge valves. AAK hydraulic flow control cartridge valve is benchmarking HydaForce, but the price is only 70% of HydraForce, or even lower. Compared with domestic peers, AAK hydraulic flow control cartridge valve may be 20% more expensive, but the service life is twice that of its peers. AAK hydraulic flow control cartridge valve, insists on 3 points: manufacturing quality, function and performance. 1. In terms of material selection, AAK adopts 20CrNi2MoV high carburized bearing steel imported from Germany, combined with carburizing pretreatment process, through secondary quenching + cryogenic treatment + low temperature tempering process, cooled to 650~700 ℃, and then discharged after cooling to 450~500 ℃. The microhardness of the treated material is 237~247 HV, and its wear resistance and contact fatigue properties are more than 3 times higher than that of the ordinary material. 2. The equipment is equipped with a precision honing machine imported from the United States. The accuracy of the hydraulic flow control cartridge valve hole is guaranteed. The accuracy of the IT7~4 level and the surface roughness can reach Ra0.32~0.04 μm. It is difficult to find 5 cartridge valve manufacturers like this in Ningbo. 3. In terms of inspection, AAK hydraulic flow control cartridge valve is 100% fully inspected. The self-developed high-pressure test bench and durability test equipment are used to check the pressure, flow and fatigue resistance of the cartridge valves. AAK hydraulic flow control cartridge valve, 3 advantages, and its service life is twice that of its peers. You can also try it! https://www.aakindustry.com/info-detail , /flow-control-cartridge-valves-aak496

At the end of last year, Stefan from Italy sent an email asking whether 50 non- standard hydraulic flow control valves could be produced within 25 days? For urgent orders like this, there is probably a problem with procurement. We have 3 years of cooperation with Stefan in some high-precision hydraulic flow control valves. Stefan is also an experienced purchaser in the hydraulic valve industry. Unexpectedly, he encountered problems on purchasing this time. In the second half of last year, their company produced a batch of hydraulic winches, which needed hydraulic flow control valves. We also received an inquiry for this hydraulic flow control valve but did not get the order. Stefan frankly advised that AAK quotation was about 20% higher than that of other hydraulic flow control valves, so I gave it up, and told him that although AAK quotation was 20% more expensive than that of the peers, the service life of AAK hydraulic flow control valves was twice as long as theirs. Stefan didn't expect that 3 months after the equipment was sold, some customers complained that the hydraulic winch was unable to operate. The after-sales personnel found that it was caused by the leakage of the hydraulic flow control valve. The customer asked to solve the abnormal equipment problem within 1 month. The original manufacturer of the hydraulic flow control valves advised that it should be the leakage caused by the wear of individual parts due to the poor accuracy. He is also willing to offer free replacements. Because this hydraulic flow control valve is customized and there is no inventory, and it takes 50 days to re-produce. Stefan has a big headache. He tried to contact other manufacturers of hydraulic flow control valves. They either rejected due to the small quantity or said that it would not be completed in 25 days. After the boss learned about these conditions, he asked Stefan to contact AAK again. Even if the price is higher, it can be completed within 25 days, moreover, there is no need to worry about the manufacturing quality of AAK hydraulic flow control valves. I told Stefan that as long as our production line can be adjusted, AAK will still maintain the original quotation of last year. After 25 days, AAK sent 50 hydraulic flow control valves, and Stefan finally relaxed. Yesterday, Stefan sent an e-mail to express his thanks. After AAK hydraulic flow control valves were installed on the equipment, and there has been no complaint for 6 months. His boss wants to know how AAK produces hydraulic flow control valves in half the time of its peers? 1. In terms of component processing, the hydraulic flow control valve adopts Japan OKK ultra precision machine tool, especially its nano resolution numerical control system, which can ensure that the component processing accuracy can reach 0.01-0.3μm. The shape and profile accuracy is 0.003 - 0.1μm. At the same time, the fast moving speed of each shaft reaches 60m/min, which is more than 30% faster than the production efficiency of other machine tools. At the same time, under the operation of our technicians, the processed components are free of defects. 2. In the assembly, considering the accuracy difference of each component of the hydraulic flow control valve, our peers use the matching method to assemble, while AAK uses the unified assembly method, and the assembly efficiency is twice that of the peers. 3. In terms of production deployment, for special orders, we can operate 24H, and there is flexible production line deployment. AAK hydraulic flow control valves, fast delivery, zero defects, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-flow-control-valves-aak321

15 years ago, I left my original company and started a business with a friend to establish AAK, a hydraulic cartridge valve manufacturer. Since that day, no one has paid me any more. From the first day of entrepreneurship, I stood on the edge of a cliff, facing the unknown mist, and could only grit my teeth and start moving forward. Ahead, there may be a new continent flowing with milk and honey, or a bottomless abyss. Zero for the first time in life. There are only expenses and no income in the bank card. I told my parents: I resigned and plan to start a business. I used to send you a lot of money, and you can use it as you please, but starting from this month, I can't give you the money. Give me 1 year, and after that, I will send you the money again every month. 3 years later, I found that the majority of Chinese hydraulic valve manufacturers are only concentrated in the domestic market and only replicate and produce according to the original sample. But these Chinese hydraulic valve manufacturers are not worried about orders, they have a comfortable life, only the payment is slow. If hydraulic valve manufacturer AAK follows the approach of its peers, it would be at best just a processing plant. Following the old map, no new continent can be found. It's time to change and return to zero. A glass is filled with water, and if we continue to pour it in, the water will overflow. Zeroing is not letting one's cup overflow, but rather constantly pouring, giving oneself space to accept new things. So, hydraulic valve manufacturer AAK gave up the domestic market and began to focus on the overseas market of hydraulic valves, marking zero in life for the second time. Business is like life, we should learn to forget our past achievements, let go of our so-called self-esteem, put ourselves to the lowest level, and be brave enough to try. The more confident you are in the future, the more patient you will be in the present. But many Chinese hydraulic valve manufacturers do not realize that they are already in an industrial comfort zone. Returning to zero means daring to shed one's shell. The outer shell is tangible and easy to break. The inner shell is intangible and difficult to break. The ability to break the shell in one's heart determines the ceiling of growth. Many people live their entire lives in a 'shell' and are unwilling to see the truth. Life is like a bicycle, only by constantly moving forward can one not fall. Choosing 'molting' and 'returning to zero' is like adding a booster to this bicycle to make it move faster. 8 years ago, I saw and started to choose overseas markets. I realized that it was time to evolve AAK's products. With the Chinese hydraulic manifold manufacturer in plan and were ready to return to zero for the third time. Until now, it has been running for 8 years and continues to serve Honeywell, a Fortune 500 company. Hydraulic valve manufacturer AAK, spent 3 years from supplying domestic listed companies to focusing on overseas trade. From a Chinese hydraulic valve manufacturer to a Chinese hydraulic manifold manufacturer, it took 5 years. Most Chinese hydraulic manifold manufacturers always feel that they are doing well domestically, but they cannot see the changes in overseas markets and are not aware of the crisis in the industry. Chinese hydraulic manifold manufacturer AAK, has returned to zero 3 times, and returned 3 times, continuously serving the Fortune 500 company. AAK HYDRAULIC VALVES (678) 2023-09-24 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers-aak678

Today, the American customer April has placed another new order for hydraulic cartridge valves. Coincidentally, this PO is for 100 non-standard customized hydraulic cartridge valves that AAK has cooperated with them for 10 years. April is the first customer of AAK Hydraulic Valve to enter the overseas market, and also the first foreign trade order of AAK Hydraulic Valve 3 years after its establishment. Up to now, AAK hydraulic cartridge valves have been supplied to 7 world top 500 enterprises. AAK hydraulic cartridge valves adhere to 3 points, adhere to the manufacturing quality of hydraulic cartridge valves, pay attention to research and development, and focus on innovation. In particular, the high-precision and high-performance hydraulic cartridge valve samples have been defeated repeatedly, but we never give up until success. April's first inquiry is for hydraulic cartridge valves used in the military industry, with an accuracy of 0.8μm or less, the durability of more than 1 million times, and the opening and closing performance of 1 second. Our engineer was a little timid when he saw these requirements. I told him that if the development was successful, all the credit would go to him. If it failed, I would pay for it. 2 months later, the samples of AAK hydraulic cartridge valve was sent out. 2 weeks later, April reported that the opening and closing performance of AAK hydraulic cartridge valves reached the standard, but the accuracy and durability tests failed. This indicates that the material selection is incorrect and the process is correct. I told April that AAK was confident that the samples would be successful. 3 months later, the test of AAK hydraulic cartridge valves still failed, and the durability was barely 800,000 times. I encouraged the engineer to continue the test. 5 months later, the AAK hydraulic cartridge valve was approved by April. At the same time, the never say die spirit of AAK also makes April admire, because AAK is the only manufacturer of hydraulic cartridge valves that insists on testing samples in 1 year and does not give up. AAK hydraulic cartridge valves, in the face of failure, the wealth gained is that after every failure, there is an increase in technology accumulation, of which the most critical is 3 points: 1. Equipment updating is not stopped, and fixture innovation should be synchronized. 5 years ago, the precision honing machine imported from the United States was introduced. The accuracy of valve holes processed by other hydraulic cartridge valve manufacturers is 0.8μm--1.0μm, while with AAK synchronous innovation fixture, the valve hole accuracy can be within 0.6μm- -0.8μm, which is 20% higher. 2. Material types: AAK material warehouse has 12 kinds of special steels, such as 3Cr3Mo3W2V hot work die steel, 20CrNi2MoV high-permeability carbon bearing steel imported from Germany, Hastelloy alloy steel imported from the United States etc. At the same time, there are 8 kinds of sealing ring materials. At any time, we can meet the requirements of customers with high quality hydraulic cartridge valves. 3. Technology and process upgrading: AAK has senior engineer from HAWE, and technical teams with an average of more than 15 years of industry experience, adhere to the manufacturing quality of hydraulic cartridge valves, pay attention to research and development, and focus on innovation. AAK hydraulic cartridge valves are supplied to 7 world top 500 enterprises. You can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-valves-aak320

Today, AAK will post a Pilot-Operated, Pressure Reducing/Relieving Valve benchmarking SUN Hydraulics' PPDB series, and we have developed 3 sub categories: E-PPDB-LAN; E-PPDB-LDN; E-PPDB-LWN. The working characteristics of this pilot operated pressure reducing/relieving valve are: the pilot operated valves exhibit exceptionally flat pressure/flow characteristics are very stable and have low hysteresis. Pilot operated reducing/relieving valves by nature are not fast acting valves. For superior dynamic response, consider direct acting valves. The function of this pilot operated pressure reducing/relieving valve is to reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). In the past 12 months, AAK have received 8 inquiries and 6 orders. The selling points of this pilot operated pressure reducing/relieving valve are: 1. Control Pilot flow: 7 - 10 in³/min, Benchmarking SUN 2. The service life is 2 times that of domestic peers in China Technical parameters of AAK E-PPDB Hydraulic Pilot-operated, pressure reducing/relieving valve: Max. Operating Pressure: 350 bar (5000 psi) Capacity: 10 gpm (40L/min) Control Pilot Flow: 7 - 10 in³/min. Cavity: T-11A For this pilot-operated pressure reducing/relieving valve with 3 sub categories, benchmarking SUN PPDB series, you can also try it out. AAK HYDRAULIC VALVES (579) 2023-05-08 https://www.aakindustry.com/info , -detail/pressure-reducing-valve-aak579

Romero from Spain has cooperated with AAK on a hydraulic pressure control valve for 3 years, and it is re-ordered 3 times a year. He has been very smooth on every purchase, but in October last year, he encountered problem on a batch of hydraulic relief valves purchased from other hydraulic valve manufacturer, and was complained by customers one after another, which made the boss very disappointed with him. AAK finished the non-standard customized hydraulic relief valves with 1 second opening and closing performance within 30 days, which made Romero win back the trust of the boss. Not long after returning from the Spring Festival holiday this year, Romero emailed to ask whether 50 hydraulic relief valves with opening and closing ability of less than 1 second can be customized within 30 days, and stressed that the flow must be stable. Because the new year just started, there were many things in the workshop, and I wanted to refuse. After several rounds of email communication, I learned about his predicament. In the second half of last year, their company produced a batch of hydraulic power units for ship equipment. 3 months after sales, the customer complained that the pressure supply of the system was unstable. It was found that the opening and closing performance of the hydraulic relief valve was poor and the flow control was unstable, which led to the unstable pressure supply of the system. The original manufacturer of the hydraulic relief valves said that this is an individual phenomenon, and the hydraulic relief valves with problem can be replaced for free. But unexpectedly, in the next month, they received complaints from customers one after another, and can not get into contact with the original manufacturer, making their after-sales service hard to cope with. The boss was very angry and requested Romero to re-customize 50 hydraulic relief valves within 40 days, and the manufacturing quality must be excellent. Romero contacted several hydraulic relief valve manufacturers. They either can't make hydraulic relief valves with opening and closing performance less than 1 second, or they need 60 days to customize 50 hydraulic relief valves. A week has passed without any progress. Romero is extremely worried. In the past 3 years, I have enjoyed working with Romero. After discussing with the engineer, I decided to help him. After 30 days, AAK sent 50 hydraulic relief valves with opening and closing ability less than 1 second. Today, Romero informed that with the use of AAK hydraulic relief valves, their equipment has not been complained in nearly 6 months. Before installation, their engineers specially tested the opening and closing performance of AAK hydraulic relief valves, each within 1 second. I told Romero that our guarantee is not 6 months, but 12 months is our pass line. As long as there are no deliberate human problems, the service life of AAK hydraulic relief valve is 2 million times, which is benchmarked with the quality of HydraForce. This is also the reason why many hydraulic valve manufacturers can not do it. AAK has already surpassed its domestic counterparts. 1. The selection of the pressure spring of this hydraulic relief valve is the key. 60Si2CrVA alloy steel pressure spring is its perfect match. The tensile strength and yield strength of the pressure spring is at least 70% higher, ensuring the opening and closing performance within 1 second. 2. AAK uses the high-precision honing machine imported from Switzerland to finish this hydraulic relief valve, and the valve hole accuracy can be within 1.0μm, the flow stability is guaranteed, while most of the hydraulic relief valve manufacturers are around 2μm. 3. AAK hydraulic valve has a large amount of data storage. With the most advanced UG/SOLIDWORK software and finite element analysis method, the process data can be configured in 2 hours, which is 3-6 times faster than other hydraulic valve manufacturers. AAK hydraulic relief valves, opening and closing in 1 second, durable for 2 million times, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-relief-valves-aak319

In the workplace, 90% of people leave the computer, and their brain is blank. This is very fatal and it is difficult to grow into a person who is in charge. In AAK Hydraulic Valve, if colleagues are in such a state, they need to be criticized. Some people are very curious about how my brain can hold so many things.   I have been working for 24 years, and 3 working habits have always been with me. As long as you persist in doing so, your brain can also search or screen at will like a computer. Whether you are an industrial product manufacturer such as hydraulic valves or a non manufacturing enterprise, it can be used. The first habit is punctuality, and we should respect time. I don't like waiting for others, so I made up my mind not to let others wait for me. Even if there is an emergency, don't let people wait too long. For example, when I make an appointment to meet at 8:00, my instruction to the brain is to meet at 7:50. I don't like to be late. When I first joined the work, the company stipulated that I should go to work at 8:30. At this time, there are a circle of people around the punch card. Some of them are still sweating. I don't understand. I set myself a working time of 8:10, which means I have 20 minutes of leisure. I spent 15 minutes to review yesterday's events and 5 minutes to sort today's events. I have a regular schedule every day, such as what time to get up in the morning and what to do at what time to avoid the first thing delaying the second thing and the second thing delaying the third thing. The second habit is taking notes. I will write down what I learned today and what I gained.   A bad pen is better than a good memory. You can't remember it with your brain alone. People remember more than you do. That's because they use more pens than you do. For example, when we do hydraulic valve design or programming, we often need to learn some tools or methods, relevant books or documents, which are unified in a fixed folder, and summarize the basic points of the tools or methods. For example, I need to file on the same day how to solve the difficult problems of the hydraulic valves raised by the customers or the hidden quality problems of the hydraulic valves in the workshop. Otherwise, I will basically forget about them next time.   I insist on taking notes. There are already 6 thick books. I write on them what problems I have encountered one day, one month, one year, how I did the first step, the second step and the third step, and my experience. In my spare time, I'll look through it. Some can be extended. The third habit is to make a weekly list. If necessary, the four quadrant rule of time management shall be followed.   Every Monday morning, I arrive at the company half an hour earlier than usual. I will write down what I want to do this week, make a list and make a priority. At the same time, I will also make a summary of the previous week to see what progress was not completed and analyze the reasons.   Those engaged in the production of hydraulic valves should not grasp everything at once. When arranging things, they must give priority. If there are 7 things to be done in a week, but only 4 things have been completed in the end, but if these 4 things are the most important things, it may be OK. If only 4 pieces are completed randomly, the effect is very general. How to focus on the most important things is also a required course.   Good habits, good behavior, good results. In particular, AAK hydraulic valves are faced with customers who pay attention to quality and cannot be careless. https://www.aakindustry.com/info- , detail/hydraulic-valves-aak318

Patrick is from a Dutch hydraulic equipment manufacturing company. Since the beginning of last year, the order of a high-precision and large flow hydraulic relief valve has been tossed for more than half a year, and finally he had to return to AAK to place the order. At the beginning of last year, Patrick sent an inquiry for 30 hydraulic relief valves. 3 days after AAK's quotation, Patrick placed the sample order, but there was no reply after the hydraulic relief valve samples were sent. It was not until the beginning of last month, that is, more than half a year later, Patrick sent an e-mail asking whether each hydraulic relief valve in the regular order could guarantee the same quality as the sample? I felt something was wrong. After several rounds of e-mail communication, I learned that Patrick gave the regular order to another hydraulic relief valve manufacturer, and the price was more than 15% cheaper than AAK. However, after 8 months, the main valve spools of some hydraulic relief valves were worn, resulting in loose fitting of valve body holes and even grooves, resulting in failure to raise the pressure of the equipment system. According to the feedback of the original hydraulic valve manufacturer, this hydraulic relief valve has large flow, high frequency of use, high accuracy of valve hole, and wear is normal. 2 months later, more and more complaints were received, but the original manufacturer surrendered and asked Patrick to source other hydraulic relief valve manufacturers. Patrick was a little scared and had to go back to AAK. Because the AAK hydraulic relief valves used in the original design equipment has not been abnormal for more than 1 year, it would be better to choose AAK even if the price is more expensive for 15%. If the hydraulic relief valves with large flow need to have high accuracy and be durable for more than 1 year, or more than 2 million times, the material selection, processing and quality awareness are indispensable. For the hydraulic valve manufacturers who can guarantee these 3 points at the same time, you may not find a third one in Ningbo. 1.AAK has American high-precision CNC honing machine tools. The surface roughness after honing is less than Ra0.8 and the cylindricity can reach 0.5μm. Axis straightness can reach 1μm. It is especially suitable for finishing the valve hole of large flow hydraulic relief valves. The processing aperture range is 5-500mm, and the depth diameter ratio can reach 10. For large flow hydraulic relief valves with large aperture, most hydraulic valve manufacturers can only reach 2-3μm. 2.According to the large flow rate of this model, after 2 weeks of comparative testing, AAK has determined the German 20CrNi2MoV high-carbon bearing steel as the main material of the valve body. Its high wear resistance and contact fatigue resistance are 3 times that of other conventional steels, ensuring that there is no wear for more than 1 year. Most hydraulic valve manufacturers choose 12L14 free cutting steel. 3.AAK hydraulic valve has been supplied to 7 of the world's top 500 enterprises, and its quality awareness has been benchmarked with the international first-line hydraulic valve brands. AAK hydraulic relief valves, high precision, durable for more than 1 year, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-relief-valves-aak317