Tools & Hardware

Milan from the Netherlands is an old customer of AAK. He purchased many non- standard customized hydraulic counterbalance valves from AAK. In March this year, Milan asked by email: can AAK design hydraulic counterbalance valves to reduce the energy consumption of equipment? It was learned that a hydraulic elevator developed by their company focused on the selling point of "low energy consumption and high efficiency", but after equipment commissioning, the energy consumption was not as good as expected and could not be promoted to the market. Their engineer knew that it was the problem of the hydraulic counterbalance valves, but there was no improvement after making efforts for several times. Milan contacted a number of hydraulic counterbalance valve manufacturers, but there was no gain. He was very anxious. According to Milan's hydraulic schematic diagram and the original design drawing of the hydraulic counterbalance valve, AAK engineers analyzed that the problem really lies in the control of the hydraulic counterbalance valves. AAK can redesign the hydraulic counterbalance valve with 90% confidence. Milan seems to have no better choice. He paid $2,000 development fee. After 50 days, AAK sent 20 samples of hydraulic counterbalance valves. Last week, Milan sent an order for 600 hydraulic counterbalance valves. At the same time, he informed that based on AAK newly designed variable pilot ratio hydraulic counterbalance valve, their engineer adjusted the working conditions of the equipment, improved the hydraulic principle, and saved more than 30% of the energy consumption of the hydraulic elevator. The promotion at the exhibition was also very smooth, the booking was hot, and their whole team was happy. But I'm a little unhappy. The price of Milan's regular order has dropped by 40% compared with the trial order. I told him that you can't let me "earn some money from selling cabbage with the heart of selling Heroin". Milan may also be amused, and directly revised it to the original price, only stressing the need to ship on time. How do AAK engineers design variable pilot ratio hydraulic counterbalance valves? In fact, it is simply based on Milan's energy consumption pain point, fight to the end. The variable pilot ratio hydraulic counterbalance valve is an innovation from the mechanical structure of the valve, which utilizes the characteristics of variable pilot ratio and pilot pressure. When stable, a low pilot ratio is used, and when unstable, a high pilot ratio is executed. Compared with the conventional standard hydraulic counterbalance valves, the pilot pressure required for full opening can be 30% lower under the same pressure and flow. At the same time, AAK's variable pilot ratio hydraulic counterbalance valve can keep the oil cylinder and motor moving more smoothly and quickly. Compared with the original hydraulic counterbalance valve, the energy consumption can be reduced by 30%. Milan privately told that as long as the purchase of the hydraulic counterbalance valve was successfully completed this time, he could be promoted. AAK variable pilot ratio hydraulic counterbalance valve, energy saving 30%, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-counterbalance-valves-aak345

Cemeh comes from Russia, and has been purchasing hydraulic valves smoothly. At the beginning of this year, he was very passive when purchasing a hydraulic pressure control valve that can withstand high pressure of 450bar. Their hydraulic power unit used in the aviation industry requires the use of hydraulic pressure control valves with high precision requirements and high pressure resistance. Cemeh made samples from a hydraulic pressure control valve manufacturer who has been cooperating for 3 years. The equipment has been debugged twice, and when the pressure reaches 450bar, there is a leak in the hydraulic pressure control valve. The original hydraulic valve manufacturer stated that due to the need to withstand high pressure of 450bar, the valve cage material can only be selected from high carbon chromium bearing steel, which has high hardness and is prone to precision errors during processing. Therefore, the original manufacturer gave up. Cemeh contacted other hydraulic valve manufacturers in China but was unsuccessful. Cemeh browsed AAK website on B2B and then introduced himself by sending an email asking 3 questions: 1.Can the AAK hydraulic pressure control valve be leak free at a high pressure of 450bar? 2.Can the AAK hydraulic pressure control valve be durable for more than 1 year at a high pressure of 450bar? 3.Is AAK interested in developing their small qty of hydraulic pressure control valves? Based on his message, I judged that the hydraulic pressure control valve he purchased either cannot withstand high pressure of 450bar or has a service of only a few months. After communication, it was learned that the hydraulic pressure control valve from the original manufacturer leaked when pressurized. I provided a case of a Russian client for his reference. The AAK hydraulic valve was used on aircraft by a Russian client in 2019. And tell him that AAK's high-pressure hydraulic pressure control valve is based on HAWE's manufacturing quality, function, and performance. Without further questioning, Cemeh just asked: Can AAK make sample for hydraulic pressure control valves based on his drawings? After 35 days, AAK sent out 20 hydraulic pressure control valves. After receiving the samples, Cemeh informed us in the second week that the trial run was successful. 2 months later, Cemeh sent us an order for 420 pcs of hydraulic pressure control valves. Although the components of this hydraulic pressure control valve are difficult to process, AAK controls from 3 aspects: equipment, tools, detection. 1. The customized diamond reamer, has the smallest blunt radius of the cutting edge, which is not easy to break, and is also completely cut. Moreover, the coefficient of thermal expansion is small, and the thermal deformation is small. Even when machining high carbon chromium bearing steel, the machining accuracy of the valve hole is within 2μm. 2. In the precision machining stage, using honing machines imported from the United States not only further improves high-precision dimensional tolerances, but also optimizes surface roughness. 3. In the detection process, we use a Japanese imported coordinate measuring instrument to detect the dimensions, shapes, and positional tolerances of the components. Ensure accuracy without blind spots or dead corners. AAK hydraulic pressure control valve, with a pressure resistance of 450bar, is calibrated against the manufacturing quality, function, and performance of HAWE. You can also give it a try! AAK HYDRUALIC VALVES (586) 2023-05-18 https://www.aakindustry.com/info , -detail/pressure-control-valve-aak586

Bernardo comes from a hydraulic winch manufacturer in Brazil, and has cooperated with AAK several times on non-standard customized hydraulic cartridge valves. At the beginning of last year, Bernard company needed to purchase hydraulic flow control valves for a batch of hydraulic winches. Due to cost pressure, the boss asked Bernard to reduce the procurement cost of hydraulic flow control valves by 10%. This hydraulic flow control valve needs to be the same as HydraForce standard part. After a round of sourcing, Bernard determined the manufacturer of the hydraulic flow control valve. 7 months after the sale of the hydraulic winch, a customer complained that the sealing ring of the hydraulic flow control valve was broken, resulting in leakage, which caused the hydraulic winch to rise powerlessly. 6 months after the original manufacturer replaced the sealing ring with new one, the old problem happened again. The customer complained directly to the boss, who asked Bernard to replace all the hydraulic flow control valves within 1 month and asked the original manufacturer to bear the costs. However, the original manufacturer could not reach an agreement. Bernard was caught in the middle. He was embarrassed for 2 weeks and made no progress. The boss was very disappointed with him. Bernard sent me an email asking about the time and cost of re producing the hydraulic flow control valves. He wanted to pay for it himself. According to the hydraulic flow control valve drawings he sent, I realized that maybe only replacing with durable O-ring could solve his embarrassment. I sent him 10 O- rings for matching tests. A week later, Bernard told me that AAK O-rings could be matched with the original manufacturer's hydraulic flow control valves. He asked me to send 500 O-rings to Brazil as soon as possible, and he could finally have a good sleep. Last week, Bernard sent an e-mail to express his thanks. All these hydraulic flow control valves have been assembled with AAK O-rings. It has been more than a year, and there has been no complaint of leakage caused by the rupture of the sealing ring of the hydraulic flow control valves. The boss also praised him for solving big losses with small money. AAK's O-ring has 3 strengths: no sloughing, no extrusion and wear resistance. The material and structure of the seal ring directly affect the performance of the seal ring. The hardness, extrusion resistance, tensile strength and deformation of the material all determine the service life of the seal ring, and the structure of the seal ring also determines the sealing effect. AAK selects Japan's special PU polyurethane rubber sealing ring, and the lip compression of the sealing ring is strictly controlled between 15% ~ 20%. The wear resistance and high pressure resistance of this seal ring are more than 3 times that of other nitrile rubber seals. Most hydraulic flow control valve manufacturers choose nitrile rubber sealing ring, which is easy to be dislodged or extruded to cause wear. For high-frequency working conditions, the durability is 9 months at most. AAK hydraulic flow control valve, the O-ring used has 3 strengths and no leakage, you can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak344

Artem is from Belarus. A few days ago, he left a message on AAK hydraulic cartridge valve website: 1. Is AAK a manufacturer of hydraulic cartridge valves? 2. I need a hydraulic cartridge valve manufacturer with a dust-free assembly workshop. Can AAK meet this requirement? There are not many inquiries from customers who directly request that the hydraulic cartridge valve manufacturer be equipped with a dust-free assembly workshop. After communication, we learned that one of their high-end customers needs to purchase a hydraulic cartridge valve, and they are very particular about the residual dust of the valve. The source of goods must come from the dust-free assembly workshop of the hydraulic cartridge valve manufacturer. Artem checked with more than 10 hydraulic cartridge valve manufacturers in China, but none of them were equipped with a dust-free assembly workshop. I took a video of the dust-free assembly workshop that day and sent it to Artem. Then, Artem sent us his inquiry, very specific and high requirements, which is also my favorite inquiry. Hydraulic cartridge valve manufacturer AAK seems to rarely consider the dust-free assembly workshop as one of our selling points, as the vast majority of hydraulic cartridge valve manufacturers in China do not have this equipment. However, dust-free workshops still have hidden benefits, such as for the hydraulic cartridge valve customers who are very particular about dust, and more importantly, they can avoid artificial secondary pollution or residue mixing into the valve body, which may cause valve blocking. In the dust-free workshop of hydraulic cartridge valve manufacturer AAK, assembly workers pass through the dust removal room before entering the workshop and stay in the room for 5 minutes before the dust removal wall panel system starts working. Multiple dust removal jet equipment will automatically sense and start to remove residual dust from the workers. At the same time, the room floor is also covered with sticky paper carpet, which can remove dust and dirt from the soles of shoes. The assembly workshop of hydraulic cartridge valve manufacturer AAK is unique. Welcome to try it out! AAK HYDRAULIC CARTRIDGE VALVES (686) 2023-10-05 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak686

Bauer has been working in K & G company in Brazil for 6 years. His boss always trusts his work. Bauer and AAK have cooperated for 2 years. Two years ago, the marketing of a hydraulic windlass developed by K & G company focused on the selling point of "no repair in 1 year". However, 10 months after sales, some users complained that the windlass could not rise when it was just started. The problem lies in the leakage of the hydraulic relief valves. Per the manufacturer, some hydraulic relief valves had deviation during assembly, he was willing to replace the hydraulic relief valves for free. But after a few months, the same problem continued. The boss was dissatisfied, and Bauer felt the pressure and checked with other manufacturers of hydraulic relief valves, but still no solution. Bauer began to worry. Bauer emailed me to ask why the hydraulic relief valve leaks? This is a system problem. I suggested that he send us the drawings of the hydraulic relief valve, the hydraulic principle of the hydraulic windlass, and the actual samples of the leaked hydraulic relief valve. Our engineer disassembled the original hydraulic relief valves and found that the contact surface between the poppet and the valve body was worn. The leakage was caused by the weak impact resistance of the valve spool. I told Bauer that because the working condition of this hydraulic windlass is a little special, it has high requirements for the hydraulic relief valve, especially for the impact resistance of the valve spool. The manufacturing quality of the original hydraulic valve manufacturer is not poor, and the deficiency lies in the valve spool, which can be improved. Bauer had no confidence in the original manufacturer and asked AAK to replenish 50 hydraulic relief valves. After 45 days, AAK sent out the hydraulic relief valves and promised "no repair in 1 year". Last week, Bauer informed AAK by e-mail that for those hydraulic windlasses installed with AAK hydraulic relief valves, the customers no longer complained about abnormal starting. Bauer admired AAK for not only finding the "cause" but also fitting the right medicine to the case. He was relaxed and the boss was satisfied. In fact, it is not how strong AAK is, but the inertia thinking of many hydraulic valve manufacturers. They seldom consider the difference of hydraulic working conditions when deciding which hydraulic components to fix. AAK insists that every hydraulic relief valve is a new subject, from material selection to production. AAK uses 3Cr3Mo3W2V hot working die steel for this hydraulic relief valve spool, its mechanical stress is unique among many steels. Its hardness, strength and wear resistance are more than twice that of conventional valve spool materials, and it also has good thermal fatigue stability and corrosion resistance. Although it is difficult in the processing link, AAK still needs to choose the most suitable steel, even if the processing cost is 2-3 times higher. Because AAK can't make things that are not good enough, let alone supply them to consumers. Only in this way can we ensure that the hydraulic relief valve will not be impacted and eroded under special working conditions, and ensure the performance of 2 million times. AAK hydraulic relief valve, with a performance of 2 million times long service life, welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-relief-valves-aak343

Renzo is from Italy. As an old purchaser of the company, he has been doing very well before. The hydraulic directional control valves purchased at the beginning of last year distressed him. One of their high-pressure hydraulic supports had leakage due to corrosion of the hydraulic directional control valves 6 months after sales, resulting in instability of the support. The original hydraulic directional control valve manufacturer thinks that the corrosion is caused by the extreme working environment and cannot be completely improved. Renzo realized that trouble was coming and began to contact the new hydraulic directional control valve manufacturers. However, after 2 weeks, no hydraulic valve manufacturer guaranteed that it would not corrode for 1 year in an environment with high sulfur and wax oil content and low temperature, Renzo was worried. Renzo found AAK hydraulic valves in Google and left us a message: can you produce hydraulic pressure control valves that can guarantee non corrosion in extreme environments for more than 1 year? I told him that it depends on the working environment and the drawing requirements of the hydraulic directional control valve. According to the information provided by Renzo, after 1 day of discussion, AAK technical team is 90% confident to be successful. Maybe Renzo had no choice, and paid the development fee the next day. Material selection is the key to solve corrosion. After 3 times of material selection and 6 times of testing, AAK technical team completed and sent 24 samples of hydraulic directional control valves 60 days later. Last week, Renzo informed by email that it had been 10 months since their hydraulic support was installed with AAK hydraulic directional control valve, and there were no complaints of corrosion and leakage. I told him to be relieved that there would be no complaints within 1 year. Why did the AAK hydraulic directional control valve is corrosion-resistant for more than 1 year, while the other hydraulic valve manufacturers failed in 6 months? Monel 400 alloy steel is selected for this hydraulic directional control valve. The material is based on nickel metal, and copper, iron, manganese and other elements are added. Its corrosion resistance is more than 3 times that of conventional steel, especially in the geological exploitation of high sulfur and high wax oil reservoirs. At the same time, its mechanical properties have been improved by more than 30%, and it is friction resistant in low temperature environment. Besides, Monel 400 alloy steel has another feature, which is not easy to produce stress corrosion cracks, and is mostly used in aerospace, marine and oil and gas industries. Although the material cost is 2-3 times higher, AAK needs to choose the best option. Even if it's 2-3 times more expensive, still choose the best. Because AAK can't make things that are not good enough, let alone supply them to consumers. AAK hydraulic directional control valves, material selection with heart, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-directional-control-valves- aak342

Monroe is from Turkey, and has cooperated with AAK for 3 years. He purchases cartridge valves equivalent to HydraForce standard parts 3-5 times a year. Some time ago, he emailed me to ask: Can you customize non-standard parts of hydraulic cartridge relief valve? I was a little surprised because there was no inquiry for non-standard cartridge valves in the past 3 years. After communication, it was learned that the hydraulic cartridge relief valve used in one of their hydraulic cylinders encountered a problem. The vibration of the oil cylinder was severe, and the problem came from the hydraulic cartridge relief valve, which was slow in response to overload and overflow. This cartridge relief valve was customized from a hydraulic cartridge valve manufacturer in Ningbo. The manufacturer had optimized it twice, but the improvement was not obvious. I asked him if as long as the hydraulic cartridge relief valve is sensitive to overload and overflow, it can solve the problem of cylinder jitter. I was just afraid to waste his sample time. After getting the approval of their engineer, according to his system schematic diagram and the original drawing of the hydraulic cartridge relief valve, AAK engineer judged that after change the pilot function of the original hydraulic cartridge relief valve, it can react sensitively. After 35 days, AAK sent 8 samples of hydraulic cartridge relief valves. During the CNY, he sent us a PO of 280 hydraulic cartridge relief valves. He said that the cylinder fitted with AAK hydraulic cartridge relief valve very well, and did not shake. The customer was very satisfied with the trial of the cylinder, and placed the order with them for the cylinder. AAK hydraulic cartridge relief valve is sensitive to overload and overflow. The key is that we have made 3 breakthroughs in valve spool, seat structure and sealing. The optimized AAK hydraulic cartridge relief valve strengthens the pilot function, and can directly push the valve spool to release pressure without opening the pilot structure first. In the overload of hydraulic cartridge relief valve, the overflow action is more direct and sensitive. 1. Change the through-hole of the oil replenishing valve spool of the hydraulic cartridge relief valve to be larger than the cross-sectional area of the valve seat opening, and the oil replenishing valve spool and the overflow valve spool are arranged coaxially, and the pressure regulating screw is connected with the pressure regulating lock nut through the thread. 2. One end of the oil inlet of the valve seat is connected with the rear through-hole of the oil filling valve spool, and is equipped with a sealing ring and a spring. 3. The left end of the valve seat is the clamping part, the middle and front parts are the plug-in parts which are similar to the cylinder structure, the front part and its side have overflow outlet and overflow inlet, and there are seal ring grooves between the two ports. After finalizing the purchase contract of this hydraulic cartridge relief valve, Monroe told me privately today that he was promoted to the purchase manager by his boss, and he also got a raise in salary. He has more confidence in the purchase of the cartridge valves. AAK hydraulic cartridge relief valve, is also sensitive to overload and overflow. You can also try it! https://www.aakindustry.com/info-detail , /cartridge-relief-valves-aak501

Lennox comes from a hydraulic equipment company in Greece, and has been purchasing for 3 years, which has been smooth. In the second half of last year, a batch of hydraulic cartridge relief valves purchased stumped him. Some time ago, they sold hydraulic power unit equipment. The customer complained about the slow unloading speed and low adjustment sensitivity. After the after-sales inspection, it was found that there were debris and other impurities in the space between the valve body and the valve spool of the hydraulic cartridge relief valve, which could easily cause the hydraulic cartridge relief valve to jam intermittently. It was thought that the problem could be solved after thorough cleaning, but soon the old problem occurred again. The original manufacturer of the hydraulic cartridge relief valve said that the problem was caused by unqualified hydraulic oil. Lennox realized that the service awareness and manufacturing quality of the original manufacturer could not meet the customer's needs, and had to change the hydraulic cartridge valve manufacturer. However, a week later, there was no solution, and Lennox was worried. Lennox browsed AAK website on Google and left a message: 1. Why is the unloading speed of the hydraulic cartridge relief valve slow and the adjustment sensitivity of the valve low? 2. Is the main reason for the stuck of the valve spool due to debris and other impurities? 3. Can AAK optimize the design of the original hydraulic cartridge relief valve and what is the sample lead time? According to this message, I know that he has encountered problems in purchasing hydraulic cartridge relief valve, and the original manufacturer is powerless. After communication, we learned his current dilemma. According to the video of abnormal equipment and the production drawings of the hydraulic cartridge relief valve sent by Lennox, AAK engineer advised that the first step is to optimize the original structure, and the second step is to ensure the machining accuracy. As long as these 2 steps are free of mistakes, we can solve the customer's complaints 100%. According to the development time and cost of AAK, Lennox asked for AAK samples on the second day after feeding back to the boss. After 45 days, AAK sent 20 hydraulic cartridge relief valve samples. Last week, Lennox sent an email to express his thanks. It has been 8 months since the power equipment equipped was installed with AAK hydraulic cartridge relief valve. The customer has not found that the unloading speed is slow and the adjustment is also flexible. The customer is very satisfied with this after-sales service. The boss has decided to replace all the hydraulic cartridge relief valves on this batch of power units with AAK ones, so that AAK can prepare materials in advance. AAK optimizes the structure of the original hydraulic cartridge relief valve in this way: 1. 6 overflow ports are set along the circumference of the hydraulic cartridge relief valve body, to accelerate the unloading speed of the hydraulic system, and increase the adjustment sensitivity of the valve. The standard deviation of processing accuracy of each overflow port must be the same, which makes it difficult for most hydraulic cartridge valve manufacturers. 2. A groove is arranged on the outer circumference of the hydraulic cartridge relief valve. The support ring, seal ring and filter are set in the groove. This is a technical activity, just like the dentist planting teeth for the 80 year old people. The valve body will be scrapped if a link is defective. 3. The filter is set in the concave part of the oil inlet, which can not only filter the impurities in the worn shoulder, but also clean the oil, completely solving the stuck of the valve spool caused by external factors. AAK hydraulic cartridge relief valve, sensitive and trouble free, you can also try a small order! https://www.aakindustry.com/info-det , ail/cartridge-relief-valves-aak429

Sumarokov comes from Russia and has been engaged in the procurement of hydraulic valve blocks for 7 years. His boss also thinks highly of him. At the beginning of the year, Sumarokov needed to purchase a hydraulic valve block for use in a hydraulic tractor. He took samples from local hydraulic valve block manufacturers, and the test run was smooth. But he didn't expect that 1 month after the sale of the hydraulic tractors, some customers complained that the equipment was unstable and there was leakage at the hydraulic valve block aperture, but the original hydraulic valve block manufacturer thought that it had nothing to do with their hydraulic valve blocks. There were more and more complaints from customers, but the original manufacturer did not cooperate, and Sumarokov had a big headache. On B2B, Sumarokov saw many articles about hydraulic valve blocks from AAK and left us a message: can you ensure that every valve hole of hydraulic valve blocks is processed without deviation? I guessed that the machining accuracy of the holes of the hydraulic valve blocks he purchased was uneven. After communication, I learned that he was in trouble. I told him that most hydraulic valve block manufacturers use 5 processes of drilling, reaming, spot facing, reaming and grinding to process the valve holes. The hidden trouble is that in the process of hole reaming and grinding, the expansion of the orifice is not easy to control, and the aperture may not be absolutely consistent. I suggested Sumarokov directly trying AAK samples of the hydraulic valve blocks. Whether AAK can do it well or not, it does not depend by mouth. You can tell by the samples directly. Sumarokov accepted my proposal and paid for the development cost. After 25 days, 40 hydraulic valve blocks were sent out to solve the customer's complaint first. Last week, Sumarokov said in an email that it has been 3 months since AAK hydraulic valve block was installed on the hydraulic tractor, and there is no complaint of leakage. The hydraulic valve block looks simple, but in the processing of valve holes, the processing technology needs to be determined according to different accuracy requirements, not simple drilling, reaming, spot facing, reaming and grinding. AAK is different and lead most hydraulic valve block manufacturers with 3 points. 1. Choose the reamer. For the processing of the valve hole of this hydraulic valve block, we use the reamer made of 50W6MO5G4V2A1 material with hardness of HRC66 instead of the conventional W18Cr4V. 2. In terms of equipment, we use a high-precision machining center imported from Switzerland. The roughness of the processed hydraulic valve block valve hole can reach Ra value of 0.8-0.4μm. The ovality circle error and taper error can be controlled within 0.01-0.02mm, and the valve hole size accuracy can be controlled within 0.01mm. 3. In terms of processing technology, it is processed by 5 links: drilling, reaming, rough reaming, fine reaming, and no edge reaming and squeezing. The increase in the outer diameter of each link is controlled at 0.02mm, and kerosene is used for cooling in the processing process. The cutting amount is strictly controlled, and V = 2m / min and F = 0.3mm/n are implemented. AAK hydraulic valve block, processed with good tricks and Swiss leakage free seal technology, you can have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-valve-blocks-aak341

Ctenah is from Russia. In early July of this year, he left a message on AAK hydraulic valve website: We mainly purchase hydraulic cartridge flow control valves from India and Europe. Due to the prices in Europe and the instability in India, we would like to try to find a long-term cooperative supplier of hydraulic cartridge valves from China. Based on my over 20 years of experience and multiple visits to AAK hydraulic valve websites, I believe AAK is a good option. At present, we have a customized model that has been tested 3 times in the Indian factory, but the stability of hydraulic cartridge flow control valve accuracy is still not solved. If you are willing to develop the Russian market, we will start working together with this hydraulic cartridge flow control valve. I really appreciate Ctenah's frankness and checked their company online. Their product line is very compatible with AAK, and the quality of hydraulic cartridge valves is also very particular. He seems to be very cheerful, which is the target customer base of AAK hydraulic valves. According to the hydraulic cartridge flow control valve samples sent by Ctenah from the original Indian factory, and his original design drawings, the accuracy requirements are high, especially the 1μm valve spool is difficult, without unique skills, it is hard to maintain the stability of precision. For each batch of hydraulic cartridge flow control valves, there will be always a part that will leak. I think this is the reason why Ctenah was not satisfied with the 3 times of samples sent by the Indian factory. I told Ctenah that the key to the accuracy of this valve spool is polishing, which not only requires high-precision grinding machines, but also segmented cutting techniques. After 40 days, AAK sent out 12 samples of hydraulic cartridge flow control valves. Last week, Ctenah's email us, stating that AAK sample accuracy meets the requirements, and there are 17 models of hydraulic cartridge hydraulic valves attached for AAK to quote. They will visit AAK factory by the end of October. I expect AAK to become his most stable hydraulic cartridge valve supplier in Ningbo China. He used 20 years of experience as a guarantee, and I gave back his choice with 1 successful sample. Sometimes, business is often simple. The precision machining of the hydraulic cartridge flow control valve spool is carried out by AAK using Japan's Tsugami cylindrical grinding CNC lathe. This equipment was previously mostly used in the military industry, with the advantages of centralized control rods, the characteristic of no deviation in spindle rotation, and the stability and seismic resistance of the plastic guide rail. It is qualified to challenge 1μm accuracy. The equipment engineer first adjusts the cutting stroke of the equipment based on the hydraulic cartridge flow control valve spool, and then cuts the blank parts in sections according to the contour of the spool. Using the entry method, the blank parts are finely ground in sections, leaving a capacity of 0.03. This is crucial, as leaving more or less will have an impact. When cutting by segment, there is 1 more detail that is also crucial: adjacent to two segments, set a 5mm overlap interval. Most hydraulic cartridge valve manufacturers do not delve deeply into these 2 details, which also leaves a potential problem for unstable accuracy. Finally, the vertical method is used for precision polishing, and the speed is controlled at 70% of the general speed. Although the efficiency is low, it is beneficial for the stability of accuracy. AAK hydraulic cartridge flow control valve, 2 details, 2 methods, challenging 1μm accuracy. You can also give it a try! AAK HYDRAULIC VALVES (685) 2023-10-03 https://www.aakindustry.com/info , -detail/cartridge-directional-control-valves- a , ak685

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Noah is from Brazil, and their hydraulic equipment is very popular locally. Last year, a batch of hydraulic needle valves customized from a hydraulic valve manufacturer in Ningbo China broke his smooth procurement experience. The hydraulic needle valve had unstable flow control, which had caused customer complaints. The original hydraulic needle valve manufacturer had replaced some parts, but the problem cannot be completely solved. The root cause was unstable accuracy, and Noah was very helpless. Last September, Noah found AAK Hydraulic Valve and left us a message: Can AAK make a hydraulic needle valve with stable flow control and a service life of no less than 18 months? After communication, it was learned that about 30% of the hydraulic needle valves he purchased had unstable flow control. Noah sent us 10 samples of hydraulic needle valves from the original factory. After dissecting, we found that some hydraulic needle valves have a coaxiality error of 3μm. There are also 2μm. According to his hydraulic system schematic, if controlled at 1.0μm or less, then the hidden problem of unstable flow control can be eradicated. Noah required AAK to make samples. 45 days later, Noah received samples of AAK hydraulic needle valves. Today, we received an email from Noah stating that the AAK hydraulic needle valves have been in operation for 6 months and there have been no complaints of unstable flow control. They need to purchase a batch of hydraulic needle valves and need my feedback on the production time. The reason why AAK hydraulic needle valve can replace the original hydraulic valve manufacturer is because it focuses more on the accuracy and functionality of the hydraulic needle valve, with analysis, precision machining, and testing, with each process followed to another one. 1. Analysis of Amesim simulation software: Simulate the flow curve of liquid through a hydraulic needle valve, with specific and realistic parameters. 2. Control of precision machining: Using Swiss honing equipment and specialized fixtures, with 30 years of experienced technicians, the coaxiality of hydraulic needle valves can be controlled within 1.0μm. 3. Inspection and control: Use three coordinates for inspection, strictly control the coaxiality within the tolerance range, and also check the cylindricity. AAK hydraulic needle valve, with analysis, accuracy, testing, and durability, you can also give it a try! AAK HYDRAULIC VALVES (585) 2023-05-16 https://www.aakindustry.com/info , -detail/needle-valve-aak585

Davis comes from a hydraulic equipment company in the United States. He has cooperated with AAK for 4 years, and it is very smooth. It is strange that since an inquiry of hydraulic pressure control valves in the second half of last year, there has been no new inquiry from him, only the reorders of some hydraulic cartridge valves. At the beginning of August, Davis asked about the production time of 200 hydraulic pressure control valves, and only then did we know that why he did not place orders for new valves for a long time. In the second half of last year, he found a hydraulic valve manufacturer whose price was more than 20% cheaper than that of AAK, so he moved the business to that manufacturer. But now troubles come out one after another, the boss is very dissatisfied, and he is under great pressure.   The most troublesome thing is that a three grip electro-hydraulic puller is weak in grasping due to the leakage of the hydraulic pressure control valve. However, the manufacturer of the original hydraulic pressure control valves prevaricated, and the high frequency of use of the equipment caused the wear of the valve body, and even refused to replace the goods. Davis regretted his decision. He caused big trouble for the first time because of the 20% price difference, and had to get back to AAK. In the past 4 years of cooperation with AAK, there was no complaint. In order to help Davis get out of the predicament as soon as possible, we adjusted the production arrangement of the workshop. 2 weeks later, 200 hydraulic pressure control valves were delivered. Davis also sent me the drawings of other valves produced by that manufacturer with lower price, and asked me to be prepared for production.   AAK hydraulic pressure control valve is wear-resistant and leak free, ahead of most hydraulic valve manufacturers in 3 aspects, which are also the important points to ensure the performance of 2 million times.   1. In terms of materials, AAK adopts German 20CrNi2MoV high carburized bearing steel. Through secondary quenching + cryogenic treatment + low temperature tempering process, its microhardness is 237 ~ 247HV, and its wear resistance is 3 times higher than that of similar steels. Most hydraulic valve manufacturers may know how to choose materials, but they may not do a good heat treatment.   2. On the equipment, AAK uses the Japanese NP520X-F full-automatic grinder to finish the valve spool. The surface of the processed valve spool is like a mirror with an accuracy of 0.8μm, the flexibility of the valve spool is improved by at least 2 times. Most hydraulic pressure control valve manufacturers can not process the same quality valve spool as AAK.   3. In terms of detection, AAK uses the German Diatest small pore diameter measuring instrument to check each valve hole of the hydraulic pressure control valve, and the measurement accuracy range can reach 0.1μm at least, ensure the concentricity of the valve hole is consistent, and most hydraulic valve manufacturers use random sampling inspection.   Davis privately told that the boss was very happy with AAK's help regardless of past grievances, and was also satisfied with Davis's ability to deal with unexpected problems.   AAK hydraulic pressure control valve has a performance of 2 million times of long service life. You can also have a small test! https://www.aakindustry.com/info-deta , il/hydraulic-pressure-control-valves- aak340

Some customer left a message to AAK: is AAK a hydraulic valve brand? I answered: AAK Hydraulic Valve has no plan to spend time on becoming a brand, but insist on working hard on building trust. The hydraulic components of small and medium-sized enterprises, whether they are hydraulic valves, coils, hydraulic valve blocks or hydraulic manifolds, are not brands in essence, but network trust. Hydraulic valve counterparts, don't be confused by the word "brand". Although many bosses really want to make a brand, they first encounter the hurdle of "trust". If they can't pass this hurdle, how can they get a brand? I always suggest that hydraulic valves should be made stronger rather than bigger. The guiding principle of brand building is to build trust, and only trust on the network. Don't think about the trust on the ground channel at all. Only the network can cover the whole world with the lowest cost. In a sense, as long as we insist on high-quality hydraulic valve content output every day, we can achieve global network trust. However, it is difficult to insist on writing the contents of hydraulic valves every day. What is more difficult is to write the contents of hydraulic valves that are "related to users" and "beneficial to users". There are too few people who are good at writing long and short essays. It's not that anyone who can write an article can write an essay. An article and an essay are two different things. Don't talk about essay. Even the title of an essay will embarrass 99% of the people. I saw the short video of the hydraulic valves made by my counterparts. I could only sigh. If you don't want the quality of the content, it's very simple to shoot the hydraulic valve video. You can pick up your mobile phone and say a few words of correct nonsense. Shout a few words “come and buy it”. Who can't, but is it useful? Anything done for the sake of doing is meaningless. It's difficult to be a brand of hydraulic valves. It's really difficult for small and medium-sized enterprises to be a brand. The first thing they encounter is the talent barrier. This barrier is not easy because you need to recruit 5 talents, not a worker. After passing the talent barrier, we also need to pass the hydraulic valve marketing barrier. The content should be planned. We should not write what we think and shoot what we think. The content is not systematic and cannot be played. For hydraulic valves, it is relatively simple to build network trust than to build brands. 5 knowledgeable personnel are in place, the content is well planned, and the promotion is carried out on a daily basis. Benchmarking the quality of international first-class brands, such as SUN, HAWE and HydraForce, to make the hydraulic valve manufacturing quality products. The devil of the product is always in the details. The details are all matters that require attention. There is an old saying in China that we should learn from time to time. Learn is practice. Deliberate practice is output. Only learning without output means understanding or knowing, but it is useless to understand and know. Only when you can do it can you really get it. In AAK Hydraulic Valve, whether you are the technician in the workshop, the QC of the production line, the gatekeeper of the procurement, the technical team or the sales team, we all insists on deliberate practice. We know what today, we know why, and we will know how tomorrow. All of them lay the foundation for trust. AAK Hydraulic Valve, only focus on quality and trust. https://www.aakindustry.com/info-det , ail/hydraulic-valves-aak339