Mechanical Hardware

At AAK monthly hydraulic valve summary meeting, my first requirement for hydraulic valve technicians and workshop directors in various posts is that the quality of hydraulic valves needs to be good, and must be good. At least, our hydraulic valves must be benchmarked with domestic first-line hydraulic brands. Benchmarking or surpassing the first-line brands of international hydraulic valves is our mission. Whoever messes up the job will lose his job. If a product with poor quality is "packaged" into a great product, the heart will be extremely distorted and uncomfortable, which will be condemned by God. Especially in manufacturing, this is life-threatening. I think the only customer-centered requirement for the production of hydraulic valves is quality. Within the scope of my manufacturing ability, to make the quality of hydraulic valves to the extreme that I can do is to really focus on customers, no any other rhetoric. I have another understanding of the quality of hydraulic valves, that is, not excessive, because excessive quality is also a waste. For example, if the market needs 90 points of hydraulic valve, you can achieve 95 points. If you have to do 99 points of hydraulic valves, this may be excessive. Now the internal involution of hydraulic valves is very strong. Most hydraulic valve manufacturers are thinking about how to reduce costs and prices, and finally compete with low prices. This is the routine of most small bosses. Everyone focuses on the crazy competition on the same track without thinking about how to make a high-end market with high quality in the positioning of high-quality hydraulic valves. I think this is the sadness of the hydraulic valve manufacturing industry. Because of the impact of the epidemic, most hydraulic valve manufacturers choose to tighten, even the cost of hydraulic valve technician training has been tightened, thinking that hundreds of thousands or millions will be saved. In fact, this is short-sighted. Once the epidemic is over, all markets will rebound explosively. AAK hydraulic valves adhere to the monthly quality meeting, technician training, quarterly R & D expenses and annual equipment upgrading expenses. I think this is wise and necessary. AAK hydraulic valve is to concentrate all elements and use the sharp knife of quality to be the first in subdividing the vertical field of hydraulic valves. It is not only the first, but also the only. This is my purpose of producing hydraulic valves. Hydraulic valve manufacturers must not focus on multitasking. Focus on only one may not quickly open the market quickly, not to mention focus on 2 or 3 tasks, which is a fatal mistake. AAK hydraulic valves, in terms of quality, should not only be the first, but also the only. You are welcome to have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-valves-aak212

Petrov is an old purchaser of Hydrosila Group in Russia. He cooperates with AAK on some non-standard hydraulic pilot operated relief valves and often discusses some difficulties and complications of hydraulic pilot operated relief valves. In the second half of last year, they needed to purchase a hydraulic pilot operated relief valve to test an agricultural machinery equipment. Due to urgent time, Petrov purchased from a Russian hydraulic relief valve manufacturer, who delivered 30 hydraulic pilot operated relief valves in 30 days. During the test run, the hydraulic pilot operated relief valves screamed at about 1.5MPa before opening, as well as at the start and stop. Petrov contacted the manufacturer of the hydraulic relief valves, and the manufacturer replied that the non-standard customization was completely based on the drawings provided, and the dimensional accuracy also met the requirements. Their engineers independently tested the hydraulic relief valves and found that there was really no abnormality. The boss was dissatisfied with the one week of delay due to the test run and asked Petrov to repurchase the hydraulic pilot operated relief valves. Because the hydraulic relief valve problems encountered before were solved by AAK, Petrov emailed me again. AAK engineer preliminarily judged that there may be problems in the design of the hydraulic pilot operated relief valve according to his fault description, the drawings of the pilot operated relief valve, the working parameters of the hydraulic system of agricultural machinery, and the video of the test machine. Knowing that he still has one month of flexibility, AAK can modify the original design of the hydraulic pilot operated relief valve and send 12 samples within 30 days. Four weeks later, AAK sent 20 samples of hydraulic pilot operated relief valves, which were installed and debugged without screaming, and the hydraulic power unit was started or closed for many times still without screaming. Petrov was surprised that AAK engineer found and solved the problem of hydraulic relief valveS at one time, while the original Russian hydraulic relief valve manufacturer can do nothing? Because the scream of pilot operated relief valve is often generated by high- pressure oil through damping hole or valve port, AAK engineer added inclined hole of valve seat and vibration elimination cavity in the original design. In this way, the dynamic and static characteristics of the hydraulic pilot operated relief valve can be improved, the screaming can be eliminated, the noise can be reduced, and the pressure control accuracy can be improved at the same time. AAK strong engineering team not only has the concept of German HAWE, but also has the experience of Italian Oil Control，the problem can be found at one time. After the successful test run, Petrov privately told us that the boss was very satisfied that he found a strong manufacturer of hydraulic relief valves this time, which not only solved the problems that the original Russian manufacturer could not solve, but also made the price 30% cheaper. AAK will be his first choice for the test order of hydraulic relief valves in the future. AAK hydraulic relief valves, super technical team, you can also have a small try! https://www.aakindustry.com/info-d , etail/hydraulic-pilot-operated-relief-valves- a , ak211

Zero from Italy often purchases hydraulic valve blocks. In previous years, his customer gave 95 days for delivery date. Some time ago, the customer had an urgent order for 1,200pcs of hydraulic valve blocks, and there was only 60 days from the sample of hydraulic valve blocks to delivery. For non-standard hydraulic valve blocks, the lead time is less than 30 days from drawing design, sample, service life test, production and delivery. Zero consulted all hydraulic valve block manufacturers in cooperation. They all said that it would take 60 days to complete the urgent order of 1,200 hydraulic valve blocks only for production, and the lead time in 90 days is necessary. Zero can't refuse the customer directly, so he has to find a new manufacturer of hydraulic valve blocks. Zero also understands that it is not easy to find a reliable manufacturer of hydraulic valve blocks. Moreover, this is an urgent order, and the processing of hydraulic valve blocks is also complex. There was no reply from all the manufacturers he contacted on the Internet. Occasionally, he mentioned this urgent order of hydraulic valve blocks with his friend Caled. Caled introduced him to try AAK hydraulic valves. Caled is a customer that I have worked with for several years on integrated valve blocks. Caled told Zero that AAK helped him solve several urgent orders for manifolds, and the quality was guaranteed. Zero said frankly that he was introduced by Caled and hoped to get our help. According to the drawing sent by zero, the hydraulic valve block has long and thin channels and complex oil circuit design, which is unbearable for general processing. AAK technical team first arranged the production procedure and calculated the daily output of hydraulic valve blocks. It would take 30 days to complete this urgent order. While Zero was pleased, he seemed a little worried about the quality of AAK hydraulic valve blocks. Three weeks later, their engineers tested AAK hydraulic valve block samples. The overall accuracy parameter of the hydraulic valve block is 5% higher than that of the original manufacturer, which proves what Caled has mentioned that AAK quality mentioned is guaranteed. After working overtime for 30 days, AAK successfully completed the urgent order of 1,200 hydraulic valve blocks for Zero, which is half less than the 60 days of lead time required by peers. Zero was surprised how AAK achieved it? AAK adopts the machining center of compound tools to combine two or more similar or different types of hole machining tools into one special tool. In the process of machining, reduce the tools required for machining X, Y, V and U partial views, and complete the process combination of multiple processes such as drilling, reaming, spot facing and boring. At the same time, one tool can simultaneously process threaded bottom holes, 45 °, 15 °, R0.1 chamfer and outer counter bore, which greatly improve the processing efficiency and have the characteristics of high efficiency, high precision and high stability. This is the reason why AAK completed the urgent order of these hydraulic valve blocks in only 30 days, while most hydraulic valve manufacturers can't control the processing technology of compound tools. AAK hydraulic valve blocks, processed with compound tools, are not only with high precision but also high stability. Welcome you to have a try. https://www.aakindustry.com/info-detail/hy , draulic-valve-blocks-aak210

Muhammad is from a hydraulic equipment manufacturing company in Turkey. He has been purchasing smoothly for 3 years, but stumped by the valve spool of a hydraulic cartridge needle valve. At the beginning of last year, some of their customers complained that the positioning of the paper cutter was incorrect because of the leakage of the hydraulic cartridge needle valve. The original manufacturer said that the hydraulic cartridge needle valve spool was worn due to 24H operation of the equipment, which can only be replaced every 8 months, and can only guarantee the service life of 1 million times. The boss was not satisfied with the after-sales service of the original hydraulic cartridge needle valve manufacturer and asked Muhammad to find a manufacturer with a service life of no less than 2 million times. Muhammad left a message on AAK website: Can you customize the hydraulic cartridge needle valve with a service life of 2 million times? Especially, the valve spool shall be absolutely wear-resistant. After communication, it was learned that the original manufacturer's valve spool was out of use after 1 million times, and the boss asked him to find 3 factories to sample at the same time. This hydraulic cartridge needle valve is a standard part of HydraForce, and most hydraulic cartridge valve manufacturers have existing procedures. As long as the production process of valve spool is further upgraded, the wear resistance will be at least doubled. After 15 days, AAK sent 5 hydraulic cartridge needle valves. Last week, Muhammad sent a PO for 600 hydraulic cartridge needle valves. Their engineers selected AAK hydraulic cartridge needle valves. In the PK among the 3 factories, AAK valve spool has the strongest wear resistance, and it is safe for 2 million times. Because the working condition of the equipment requires high wear resistance of the valve spool, in view of this hidden danger, AAK hydraulic cartridge needle valve spool is heat treated by 3 steps: 1. First of all, the stress relief heat treatment shall be carried out by heating in stages. The heating temperature of the first stage is 380 ℃, and the heat preservation shall be 1H after reaching the temperature. The heating temperature of the second stage is 530 ℃, and the heat preservation shall be 45min after reaching the temperature. The heating temperature of the third stage is 720 ℃, and the heat preservation shall be 30min after reaching the temperature. The air cooling shall be 300 ℃, and then the air cooling shall be conducted to room temperature. 2. Secondly, carry out 2 times of quenching, heat the valve spool to 800 ℃, hold it for 2H, then immerse it in quenching oil, hold it at 65 ℃ for 40min, then cool it to room temperature, and wash and dry it. The valve spool shall be quenched for a second time, and the temperature shall be kept at 700 ℃ for 1H, and then immersed in quenching oil. Hold at 85 ℃ for 55 min, then cool to room temperature, and wash and dry. 3. Finally, place the valve spool in the tempering furnace, heat it to 420 ℃, and keep it for 30min. Continue to heat to 585 ℃, keep it warm for 1H, cool it to room temperature, and then conduct surface strengthening heat treatment, heat it to 950-980 ℃, keep it warm for 10-15min, cool it to 550-600 ℃ with water, cool it to 300-360 ℃ with oil, and finally air cool it to room temperature. After 3 steps of upgraded heat treatment process, the strength of the hydraulic cartridge needle valve spool is increased by at least 50%, and it is quenched twice to release the residual stress. The wear resistance and corrosion resistance of the valve spool are improved, and the service life is guaranteed to be 2 million times. AAK hydraulic cartridge needle valve, the valve spool has 2 million times of wear resistance, you can also try it! https://www.aakindustry.com/info-detail , /cartridge-needle-valves-aak468

We posted a tweet yesterday: For the hydraulic cartridge pressure control valve with 2μm spool, AAK solved Steven's troubles. Someone left a message: "For the production of 2μm spool, do you have any other equipment?”. I estimate that the other party is a hydraulic cartridge valve manufacturer in the same industry, although the IP is not from China. For hydraulic pressure control valve with 2μm precision spool, equipment is the fundamental guarantee, whether it is the CNC Precision Automatic Lathe from Japan or Taiwan, it is the preferred choice for hydraulic cartridge valve manufacturers. Hydraulic cartridge valve manufacturer AAK also has other options to produce the hydraulic pressure control valves with 2μm precision spool. For example, the GONGTIE fully automatic Lathe, its stability and reliability is the preferred choice for our process engineers to prepare production orders for hydraulic pressure control valves. Our equipment engineers have also equipped targeted automatic clamping. Our technicians only need to place the rough valve spools on the clamping plate. After the program starts, the robotic arm automatically clamps the valve spool to be processed and sends it to the machine tool fixture. After the precision machining of the valve spool is completed, the robotic arm sends the valve spool to the tray and then takes the next rough valve spool. This not only improves production efficiency, but also reduces errors caused by human clamping. The spindle adopts high-precision ball screw transmission and precision bearing support. Under high-speed operation, the machining accuracy is not affected. The equipment is equipped with an electric tool tower, which can automatically feed and change the tool. With these, there is no need to worry about unstable accuracy. AAK hydraulic cartridge pressure control valve, fully automatic production, industry 4.0 concept, Welcome to try it out. AAK HYDRAULIC CARTRIDGE VALVES (756) 2024-01-11 https://www.aakindustry.com/info , -detail/pressure-control-valves-aak756

Today, AAK posted a hydraulic cartridge relief valve E-RV16-26, benchmarking HydraForce RV16-26. It is a screw in, cartridge style, pilot operated (two stage), spool type relief valve, intended for use as a pressure limiting device in demanding hydraulic circuits which require fast response and low hysteresis. Many hydraulic cartridge valve manufacturers in Ningbo China do not have this model. One of our customers in Brazil checked with 8 hydraulic cartridge valve manufacturers in 3 months, but none of them have this cartridge relief valve. He was very happily to get it from AAK finally, and the manufacturing quality and performance is equivalent to HydraForce RV16-26. The selling points of this cartridge relief valve are: 1. Benchmarking HydraForce RV16-26 2. Its service life is 2 times that of its peers Technical parameters of AAK E-RV16-26 HYDRAULIC CARTRIDGE PILOT OPERATED RELIEF VALVE: Max. Operating Pressure: 240 bar (3500 psi) Flow: See PRESSURE DROP VS. FLOW graph Internal Leakage: At port 2 Max. at 85% of crack pressure. 115ml/min. max. Note: Pressure setting below 137.9 bar (2000 psi) 197ml/min. max. Note: Pressure setting above 137.9 bar (2000 psi) Temperature: - 40 to + 120 °C (with Standard Buna N seals) Cavity: VC16-2 For this cartridge style, pilot operated, spool type relief Valve, the quality is benchmarking HydraForce RV16-26, you can also try it out. AAK HYDRAULIC VALVES (639) 2023-07-31 https://www.aakindustry.com/info , -detail/relief-valves-aak639

Kayden, from AH Garner company in the UK, has successfully purchased hydraulic valve blocks in Ningbo in recent years, and has cooperated with AAK on some high requirements hydraulic valve blocks for many years. He sent an email at the end of last year: I need AAK’s help. After communication, we learned that a new hydraulic equipment of their company was complained by customers about oil leakage in about 3 months. After inspection, their after-sales personnel found that when the equipment is switched with high-speed and high-frequency action under high pressure, the small O-ring of the cover plate of the hydraulic valve block is prone to oil leakage. The engineer asked Kayden to find the original supplier to replace the hydraulic valve blocks or cartridge valves. Unfortunately, Kayden purchased the hydraulic valve blocks and threaded cartridge valves from two factories. The manufacturer of the hydraulic valve blocks replied that the thread size accuracy of the cartridge valves did not meet the standard and caused oil leakage, while the cartridge valve manufacturer said that the accuracy of the hydraulic valve blocks did not meet the standard. The hydraulic valve blocks and cartridge valves have passed the inspection. How can there be a problem as soon as they are assembled on the equipment? Kayden suspected that the design of the hydraulic valve block was flawed, but the engineer thought the design drawing was in line with the principle. The customer didn't receive the solution, and complained to the boss, who asked Kayden to completely solve the oil leakage problem of the hydraulic valve blocks within 30 days. Now Kayden was stumped and didn't have a clue. I asked Kayden to send us the drawings of the hydraulic valve block and cartridge valve, and system principles. AAK engineers found no problems after analysis. Our engineer asked Kayden to provide the video after the equipment was started up. Combined with the system schematic diagram and equipment fault video, our engineer judged that the position of installing O-ring at the interface of hydraulic valve block and cartridge valve was inappropriate. If the position of the O-ring is lowered, and the cover plate O-ring is completely free of oil, install and fasten the cartridge valve cover plate, and produce the hydraulic valve block and cartridge valve in a same factory, the oil leakage problem of the hydraulic valve block may be solved completely. Kayden seems to have seen the dawn and asked AAK to make samples. After 25 days, AAK sent out the integrated hydraulic valve block sample. A few days ago, Kayden emailed us that it has been 3 months since the hydraulic valve block was replaced with AAK samples, the equipment works normally without oil leakage. Kayden told me that AH Garner engineer admired AAK’s strictness in details. It is so obvious, why didn't he find such an obvious problem? In order to make sure that the integrated hydraulic valve block is 100% free of oil leakage, it is not only necessary to be strict on the position of the O- ring, but also the installation of the O-ring on the hydraulic valve block. On the premise of ensuring the reasonable compression of the O-ring, it is necessary to avoid oil in the annular sealing surface of the O-ring, and any displacement of the O-ring will be in an oil-free lubrication state, so as to improve the displacement resistance. Kayden privately told us that the boss praised his quick and thorough solution to the problem, and asked him to purchase integrated hydraulic valve blocks from AAK in the future. AAK hydraulic valve blocks, be strict in every detail, you are welcome to have a small try. https://www.aakindustry.com/info-detail/hy , draulic-valve-blocks-aak209

Antonio, from Mexico, began purchasing hydraulic cartridge valves from China 3 years ago. Last September, Antonio customized a hydraulic pilot operated pressure relieving valve in Ningbo for use in their newly developed hydraulic power unit. During equipment commissioning, it was found that the internal leakage of the hydraulic pilot operated pressure relieving valve was not up to standard and the opening and closing performance was not satisfactory. The original hydraulic pressure relieving valve manufacturer has revised the samples 3 times, but none of them can satisfy their engineers. Antonio was very upset. Antonio saw the customer case of the hydraulic pressure relieving valve released by AAK in B2B, and left a message. 1.What is the minimum internal leakage of AAK hydraulic pilot operated pressure relieving valve? 2.What is the sealing effect of AAK hydraulic pilot operated pressure relieving valve? 3.What is the opening and closing performance of AAK hydraulic pilot operated pressure relieving valve? I suspected that he was unsuccessful in testing hydraulic pressure relieving valve from other hydraulic cartridge valve manufacturer. After communication, it was learned that the original manufacturer had failed 3 times, which touched me. Perhaps the direction of optimization was wrong. According to the equipment abnormality video sent by him, combined with the hydraulic system and the original sample, AAK engineers found the problem and were 90% confident that the sample would be successful. After 45 days, AAK sent 8 samples of hydraulic pilot operated pressure relieving valves. Last week, Antonio said that after installing AAK hydraulic pilot operated pressure relieving valve into their hydraulic unit, the operational lag was resolved. AAK hydraulic pilot operated pressure relieving valve has two major advantages: small internal leakage, good opening and closing characteristics, and the original hydraulic cartridge valve manufacturer can only be amazed. 1. The valve sleeve of the hydraulic pressure relieving valve has an outwardly inverted triangular clamp head at one end, and the adjusting sleeve catches the clamp head. The valve sleeve and the adjusting sleeve are fixedly connected together. There is a steel ball between the valve seat and the pilot valve spool, and there is a circular hole on the valve seat that communicates with the radial hole and can accommodate the steel ball. There is a blind hole on the pilot valve spool to accommodate the steel ball. 2. The valve sleeve has an axial two-stage step through hole that communicates with the oil outlet chamber as an overflow and outflow port. The junction between the large hole and the small hole is a conical surface, the valve spool and the valve sleeve are sealed at the conical surface, and the oil outlet chamber is located near the conical surface at the bottom of the large hole of the valve sleeve. The control oil chamber is located at the rear of the valve sleeve large hole, and the valve sleeve has a three-level outer circle outside. The right end face of the valve sleeve is an inner cone, which forms an annular plane between the inner cone and the outer cone, making the contact area between the valve sleeve and the valve seat small and stable, structurally reducing internal leakage rather than simply "blocking" internal leakage as the original hydraulic cartridge valve manufacturer did. 3. There are two stages of holes inside the valve spool, with small holes for damping and large holes for placing springs. There are two narrow grooves in the middle of the valve spool and a wide groove at the right end, which can reduce the contact between the valve spool and the valve sleeve and cause sliding friction, greatly improving the opening and closing characteristics of the valve. AAK hydraulic pilot operated relieving valve has two advantages: small internal leakage and good opening and closing characteristics. You can also try it out. AAK HYDRAULIC CARTRIDGE VALVES (547) 2023-03-31 https://www.aakindustry.com/info , -detail/pressure-relieving-valves-aak547

Chinese hydraulic valve manufacturers, the number of exports in the past 2 years is slowly increasing, which also seems to indicate that the quality of Chinese hydraulic valves has been recognized. Ten years ago, almost all Chinese hydraulic valves were supplied to domestic equipment manufacturers, and AAK began to provide samples for HydraForce. AAK hydraulic valves have indeed made a lot of progress in manufacturing / R & D in recent years, especially the export of high-pressure hydraulic valves. According to the data of Ningbo customs, AAK hydraulic valves account for more than 68%. The rapid growth of AAK hydraulic valves is due to the strict ODM, operation specification and quality control process for these big brands, which is more strict than the ISO certification system. When we communicate with any hydraulic valve customer, we don't care much about the specific PO amount of a hydraulic valve, but focus on the cooperation opportunities with him, the supply relationship of common destiny, especially the market prospect. AAK hydraulic valves have surpassed many peers in the market and research and development in recent years, but in the part of the market, especially in the mature developed market, there is a weakness in the market experience. Using AAK hydraulic valves manufacturing and R & D capabilities, combining with customers' industry experience and business creativity to jointly build a hydraulic valve supply chain system is our direction. It must be admitted that the way of thinking of European and American people in many commercial parts is worthy of our reference and learning. Therefore, AAK hydraulic valves expect to establish a business relationship of the community of common destiny with real hydraulic valve customers. Today, the new generation of hydraulic valve practitioners in Europe and the United States has been separated from manufacturing for decades. Their difficulty is how to find a healthy, sustainable, guaranteed and common fate hydraulic valve supply chain and effectively realize the actual commercial delivery. Perhaps, China's small and medium-sized hydraulic valve enterprises and European and American small and medium-sized hydraulic valve enterprises will find a better combination of interests, and then jointly create new users, which may be a new trend of globalization in the future. COVID-19 is impeding the development of globalization, but the globalization of hydraulic valves can not stop itself. The globalization of Chinese hydraulic valve manufacturers will not only stay at the level of hydraulic valve manufacturing and export. AAK is more concerned about how to make effective use of the favorable position of AAK hydraulic valve manufacturing and R & D, and then combine the business experience of the local market of developed countries to resort out and shape the innovative hydraulic valve business model, such as the software service module or platform of a hydraulic valve supply chain system. If AAK uses our hydraulic valve manufacturing and R & D capabilities and customers use their own industry experience and business creativity, such a combination must be 1 + 1 greater than 2. Know + do = get. 99% of people didn't get it in the end because they didn't do it at all. Why not AAK hydraulic valves to do it? Here we are coming....... AAK hydraulic valves, just change for you, with temperature from AAK hydraulic valves https://www.aakindustry.com/info , -detail/hydraulic-valves-aak208

Karl is from Sweden. He purchases the standard parts of hydraulic cartridge valves from Italy, and the customized parts of hydraulic cartridge valves from Ningbo. Some time ago, when they developed hydraulic drilling equipment, they needed to customize the hydraulic cartridge needle valve. He made samples in a hydraulic cartridge valve manufacturer in Ningbo. Due to the unstable pressure control of the hydraulic cartridge needle valve, the selling point of the new hydraulic drilling cannot be realized. The Italian hydraulic cartridge valve manufacturer has no time to customize. The engineer pushed, and Karl was very anxious. This Ningbo manufacturer contacted me and hoped that AAK would develop this hydraulic cartridge needle valve. I said: I have no interest to develop for my peers. If you are really in a hurry, let the customer contact AAK directly. The next day, I received an email from Karl. According to the schematic diagram of the hydraulic system provided by him and the anatomical sample of the original hydraulic cartridge needle valve, as long as the pressure balance within the valve is solved and the most suitable flow area is found, this hydraulic cartridge needle valve can achieve fine pressure control. After 60 days, AAK sent 10 samples of hydraulic cartridge needle valves. Yesterday, Karl emailed us to inform that the equipment was smoothly debugged. Their engineers admired AAK's idea for the precise pressure control of the hydraulic cartridge needle valve. AAK hydraulic cartridge needle valve has an appropriate flow area between the valve spool and the valve seat, which reduces the back pressure when the hydraulic cartridge needle valve has a large displacement, and the through-hole of the valve spool achieves pressure balance up and down the valve spool. 1. The lower part of the valve rod of the hydraulic cartridge needle valve is connected to the valve spool, and the upper part of the valve body has an axially machined orifice in which an anti rotation cylinder can be inserted. A circumferential lock is formed between the anti rotation cylinder and the valve body. 2. The spool of the hydraulic cartridge needle valve is inserted into the anti rotation cylinder and forms a circumferential lock between the cartridge and the anti rotation cylinder, with an axial sealing and sliding fit. There are oil inlet and outlet channels on the side and lower axial directions of the valve body, respectively. At the same time, a through-hole is provided on the valve spool to achieve pressure balance up and down the valve spool. 3. The valve seat is installed in the oil outlet passage and forms an axial insertion fit with the upper valve spool. The upper part of the valve spool is cylindrical, and the lower end is symmetrically provided with two V-shaped throttle ramps. When the valve spool is closed, the valve spool chamfer surface contacts the valve seat chamfer surface, which can achieve fluid cutoff. AAK hydraulic cartridge needle valve, fine pressure control, few cartridge valve manufacturer can handle it, you can also give it a try! https://www.aakindustry.com/info-detail/ne , edle-valves-aak546

In mid November, Steven from Canada left a message on the website of hydraulic cartridge valve manufacturer AAK: Can you produce hydraulic cartridge pressure control valve with 2μm precision spool? From the name Steven alone, I feel that he is not an ordinary purchaser. Most of the Steven I know are leaders. After communication, it was learned that he is the procurement manager of the company. Their colleagues have customized hydraulic pressure control valves from other hydraulic cartridge valve manufacturers in China, but the accuracy of the valve spool does not meet the standard, which has caused some delay and their engineering department is in a passive situation. Now, the procurement department is under a lot of pressure. Steven's hydraulic pressure control valve is failed in not meeting the valve spool accuracy of 2μm. As long as Steven understands how hydraulic cartridge valve manufacturer AAK produces valve spool and how to control accuracy, he will have a preliminary trust in hydraulic cartridge valve manufacturer AAK. Once he receives the hydraulic pressure control valve sample sent by AAK and the sample is recognized, Steven's trust in the hydraulic cartridge valve manufacturer AAK will be established. The production of hydraulic pressure control valve spool involves the material selection first, then rough machining, and how to achieve precision machining successfully. Precision machining requires experienced technicians and equipment with stable accuracy. For precision 2μm valve spool, AAK uses Japanese STAR CNC precision automatic lathe. Before processing, our production engineer sets the processing program for the technician, and then a professional tool setter is responsible for tool alignment. After precise positioning, the technician can proceed with the machining. That is, a process, AAK subdivides it into 3 positions, with dedicated personnel for each position, while most hydraulic cartridge valve manufacturers have 1 person for 3 positions. The STAR CNC precision automatic lathe is equipped with 24 cutting tools and adopts a dual axis layout. With one clamping, it can be processed in one go, which not only improves production efficiency but also avoids human error. The online detection function of the equipment is highly favored by technicians. During the processing, key data can be detected online in a timely manner, and the program automatically compares, providing assurance for stable accuracy. Today, we sent out 12 hydraulic cartridge pressure control valve samples, and I believe there is an additional Steven on AAK's customer list. AAK hydraulic cartridge pressure control valve, 2μm accuracy valve spool, you can also give it a try! AAK HYDRAULIC CARTRIDGE VALVES (755) 2024-01-09 https://www.aakindustry.com/info , -detail/pressure-control-valves-aak755

Aga is from Türkiye, a very shrewd customer of hydraulic cartridge valves. Earlier this year, I received an email from him saying: I saw AAK from an offline store, tried searching for AAK on Google, and then found your website. I have noticed that AAK has many customer cases that have solved the difficulties and complications of hydraulic cartridge valves. I need AAK's help: 1.Can AAK improve the response speed of the hydraulic proportional needle valve? 2.What is the control accuracy of AAK hydraulic proportional needle valve? 3.How much time and cost does it take to customize the hydraulic proportional needle valve? After communication, it was learned that a hydraulic proportional needle valve purchased from India did not match their hydraulic power unit used on ships. Due to the slow response speed of the hydraulic proportional needle valve, the equipment starts slowly. Also, due to the low control accuracy of the hydraulic proportional needle valve, the equipment operation is unstable. The Indian hydraulic cartridge valve manufacturer spent more than 3 months before and after, and has not improved it. After 2 days of internal discussion within AAK, it was necessary to make innovations in the sealing and system control of hydraulic proportional needle valves. Aga requested AAK to make samples. After 50 days, AAK sent 10 samples of hydraulic proportional needle valves. Last week, Aga sent an email to inform us that the hydraulic power unit was debugged smoothly. Their engineers were very satisfied with the response speed and control accuracy of AAK hydraulic proportional needle valve. These two functional advantages far exceeded those of the Indian hydraulic cartridge valve manufacturer. Aga privately said that the purchase of this hydraulic proportional needle valve had brought him 6 months of anxiety. He finally relaxed, and the boss also gave him a week's vacation. AAK hydraulic proportional needle valve, with high control accuracy and fast response speed, has two major advantages over its peers. 1.The valve body of the hydraulic proportional needle valve is respectively provided with a main valve hole, an oil inlet port, a oil return port, and two control oil ports and two working oil ports. The oil inlet port and the oil return port are respectively connected with the two control oil ports. 2.End caps and valve sleeves are installed at both ends of the valve hole, with a valve spool inside. The step protrusions on the valve spool form two mutually isolated chambers between the valve spool and the valve body, and the working oil ports are connected. High precision control of the hydraulic proportional needle valve is achieved by accurately controlling the flow through the chamber. 3.The valve spool is of a hollow structure, and the valve spool end cover is provided with a radial through-hole with a sensor. After the displacement detection rod of the sensor passes through the end cap, it is connected to the valve spool end cap. At the same time, a sealing ring and a grid ring are respectively arranged between the valve spool, the valve body, and the valve sleeve, providing dual protection. The advantage of hydraulic proportional throttle valve response speed comes. AAK hydraulic proportional needle valve, 2 advantages, superior to peers, you can also try it! https://www.aakindustry.com/info-detail , /needle-valves-aak545

A few days ago, someone left a message on the website of hydraulic cartridge valve manufacturer AAK asking: Hydraulic Cartridge Valve manufacturer AAK often provides solutions for someone who leave messages. They may be hydraulic cartridge valve manufacturers, which are peers of AAK, or hydraulic cartridge valve demanders, but not customers of AAK. Why AAK still do this? 2 years ago, our engineering team also raised a similar question, and I didn't know how to answer it at that time. I only asked them to do it first. Last year, neighbor Grandma Zhang, who was in her 80s, provided a standard answer to hydraulic cartridge valve manufacturer AAK. Grandma Zhang likes to dance square dance every day. She fell once 3 years ago, and her legs were not very agile as before. In addition, due to the pandemic, our community's square dance has been on hold for almost 2 years. Last year, square dance started again. Although Granny Zhang is not agile in her legs and cannot dance square dance, she has become the organizer of square dance. She has also purchased a mobile audio system worth over 20,000 yuan at her own expense, and provides audio equipment for mothers in the same community every day. She only watches and does not dance. She claims to be an admirer, and many people think that Grandma Zhang is really selfless. Grandma Zhang's husband passed away 2 years ago, and her only son settled in the United States after studying abroad, leaving her alone in the family. Grandma Zhang is worried that one day she will die and no one at home will know. If she provides a sound system for everyone, if she doesn't show up for a day, countless aunties will knock on her door. She uses the sound system service to provide herself with a guarantee of not smelly for dead at home. What a wise grandmother. This morning, before 8 o'clock, the ambulance rang in the community. It turned out that Grandma Zhang was unconscious at home and didn't deliver the sound system. The square dancing lady knocked on the door, but no one answered. The ladies felt that the situation was not normal, so they quickly called the police for help. After entering the house, they found out that the Grandma Zhang was unconscious at home, so Grandma Zhang was taken to the hospital as soon as possible. I just heard that Grandma Zhang has a stroke. Fortunately, she was sent to the hospital in a timely manner and is now out of danger. Convenience with others means convenience with oneself. Grandma Zhang helped others and saved herself. Hydraulic cartridge valve manufacturer AAK, may not be as wise as Grandma Zhang, but have long understood that being convenient to others is being convenient to oneself. AAK HYDRAULIC VALVES (638) 2023-07-30 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak638

According to the financial dept this morning, there was a sample fee for hydraulic pilot-operated relief valves. I knew it was from ROQUET company in Spain. One year ago, Domingo in their company had a hydraulic pilot-operated relief valve that needed AAK to make samples, but was unwilling to pay $2,000 of the sampling fee. The original factory didn't need them to pay, so they chose that factory to produce this hydraulic pilot-operated relief valve. Last week, Domingo came to me again to ask if there was time for sampling and they would pay the sampling fee. After communication, it was learned that the hydraulic pilot-operated relief valves shipped by the original factory were used in the hydraulic power unit. Less than half a year, it was reported for repair by the customer. It is easy to have insufficient power supply of the hydraulic system during the construction process. The after-sales engineer found that the wear of the valve spool of the hydraulic pilot-operated relief valves led to leakage. He had to use the alternative pilot-operated relief valves first and asked Domingo to contact the original manufacturer to solve the problem. The original manufacturer reported that the hydraulic pilot-operated relief valves had not been worn for more than 1 year previously. The working pressure is more than 450bar this time. The domestic hydraulic pilot-operated relief valves can only have a service life of half a year. If you want to find a hydraulic pilot- operated relief valve with a service life of more than 1 year, you can only buy it from HAWE in Germany. They are the best manufacturer of hydraulic pilot- operated relief valves with high pressure resistance in the world, but the price is estimated to be more than twice that of Chinese manufacturers. Domingo was a little helpless and asked the boss whether to purchase directly from HAWE in Germany or continue to look for hydraulic pilot-operated relief valve manufacturers in China. Because the alternative hydraulic pilot-operated relief valves were used on the construction site, they still had a 6-month buffer period. The boss asked him to look for the hydraulic pilot-operated relief valves under high pressure at the same time. At this moment, he thought of AAK. When I told him that the key point of the service life of this hydraulic pilot-operated relief valve is to resist high pressure, AAK has an engineer who has worked in HAWE Shanghai factory for 8 years, our production of high-pressure hydraulic valves is just to benchmark with that of German HAWE company, he seems to realize that perhaps AAK can sample a hydraulic pilot- operated relief valve with a service life of more than 1 year this time. AAK replied that it could complete the samples of 12 hydraulic pilot-operated relief valves within 1 month, and the warranty was more than 1 year. Domingo remitted the sample fee of US$2,000 the next day. I asked him why he was unwilling to pay last time, but this time he immediately paid the sample fee of the hydraulic pilot-operated relief valves. He was frank about two points. First, AAK mentioned the key points for the success of the sample. Second, AAK high-pressure hydraulic pilot-operated relief valves benchmarked with German HAWE company. The reason why AAK can tell the key points and why it can benchmark with German HAWE company is that there are two key points of AAK pilot-operated relief valves. It may be difficult to find the second manufacturer of hydraulic valves in Ningbo. 1. The valve spool of AAK pilot-operated relief valve is ETG100 produced by STEELTEC company of Switzerland, which is easy to cut and has high strength. It is suitable for high-speed CNC processing, and the strength of each section inside and outside the material is consistent. After the valve spool is processed into shape, the strength will not be affected. 2. AAK has a high-precision CNC machining center imported from Switzerland. After the engineers set the program, they can control the steel processing efficiently and without mistakes. Not only the strength is not affected, but also the accuracy is guaranteed. AAK hydraulic pilot-operated relief valve is used for working pressure above 450bar. You can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-pilot-operated-relief-valves- aak20 , 7