Valves

Last Wednesday, there was a repeat order from Peppe for a hydraulic valve block, which was tested in the second half of last year. Peppe required that the repeat order quality should be 100% burr free as same as the hydraulic valve block tested samples last year. Peppe comes from a hydraulic equipment company in Italy. At the beginning of last year, the paper cutter equipment they sold would stop automatically and was complained by customers. It was found that the hydraulic relief valve was stuck on the site, and the after- sales servicer thought that there was a problem with the hydraulic relief valve. After the original hydraulic valve block manufacturer disassembled it, it was found that there were debris at the moving part of the valve spool. At the same time, foreign matters were also found in the hydraulic oil, so it was known that it was caused by the incomplete burr cleaning of the hydraulic valve block. The original hydraulic valve block manufacturer also does not deny it. The burr cleaning of the inner cavity of the oil channel, the cross hole and the blind hole of this hydraulic valve block was indeed less than 100%. As long as the hydraulic oil can be replaced every 3 months, the problem can be solved. Peppe was very speechless and had to find a new hydraulic valve block manufacturer, and deliberately required 100% burr free. She contacted more than 10 hydraulic valve block manufacturers, they either gave no reply or could only have a try, but Peppe didn't have time to test, and began to worry. Peppe noticed the introduction of "100% burr free hydraulic valve block" in AAK on Google, so she directly sent us an email. I told her, "according to your hydraulic valve block drawing, there are many inner cavities and cross holes in the oil duct, especially the burr cleaning at the blind hole is a difficult problem. The traditional abrasive flow deburring method to remove this hydraulic valve block has hidden dangers. AAK suffered from it 5 years ago, and it was not until we used the new deburring technology that we dared to ensure 100% burr free". Peppe asked us to make samples as soon as possible. A month later, AAK sent 5 hydraulic valve blocks. 6 months later, Peppe emailed us that the paper cutter installed with AAK hydraulic valve block has been working normally. I told her that AAK adopted an intelligent grinding processing system to replace the traditional abrasive flow process. If this hydraulic valve block is deburred with abrasive flow, and the blind hole is easy to form a dead corner. The intelligent grinding and processing system can realize automatic solution. In the grinding process of the hydraulic valve block, with continuous power support and stability, the main shaft of the equipment can swing 360 °, which can realize the grinding of any angle and any inclined plane. No matter in the fixture positioning, or in the automatic optimization compensation of the simulation path simulation of the hydraulic valve block structure, the intelligent grinding processing system has no dead corner. No matter the surface of the hydraulic valve body, or the inner hole, cross hole, blind hole of the hydraulic valve block, as well as the end face and inner and outer contour of the orifice, the burrs can be completely removed. AAK hydraulic valve block, no burr, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-valve-block-aak289

Andrea is from a British hydraulic equipment company. At the beginning of last year, they received an inquiry for hydraulic cylinders used in national defense military equipment, which needed to use hydraulic check valves. The specific requirements for the hydraulic check valve are: internal leakage 2drop/min, surface roughness Ra 0.1-0.2μm, concentricity tolerance of valve spool and valve hole is 0.005-0.01mm. These 3 requirements are more than twice as high as the standard parts of hydraulic check valves. Andrea realized the difficulty of purchasing, and contacted more than 10 hydraulic check valve manufacturers online and offline. Except for an old supplier who had cooperated for several years told her that he was 90% confident to meet the requirements, all other manufacturers could not achieve these 3 requirements. After 45 days, the hydraulic check valve sample was installed on the oil cylinder, and less than 12 hours after commissioning, the hydraulic cylinder was running unstably during reciprocating motion. During disassembly, the engineer found that the hydraulic check valve had internal leakage, which exceeded 2 drops/min, and the concentricity tolerance also exceeded 0.01mm during testing. Andrea was helpless and had to continue to look for new hydraulic check valve manufacturers. More than 1 week had passed, the manufacturer had still not been confirmed yet. Andrea was urged by her boss and got anxious. Andrea browsed AAK website in Google and felt that AAK could help her. She sent an email to ask about it, and we learned about the purchasing difficulties she encountered. According to the hydraulic check valve drawing and the schematic diagram of the whole hydraulic system provided by her, there are few hydraulic valve manufacturers who can meet the accuracy requirements of this hydraulic check valve. After discussion, our technical team replied to Andrea the next day that AAK was able to develop this hydraulic check valve. The development cost of this hydraulic check valve was at least US$2,000. 2 days later, Andrea directly placed a trial order and paid the development fee. 45 days later, AAK sent 30 samples of hydraulic check valves. 1 month later, Andrea told us that the test run was successful, and the boss was very satisfied that she found AAK, The success of AAK ultra-high precision hydraulic check valve lies on the following 3 points, which is also why Andrea only found AAK to try this hydraulic check valve. 1. AAK uses a precision honing machine imported from the United States. After honing, the accuracy of the hydraulic check valve hole is IT7 ~ 4, and the surface roughness Ra value can reach 0.1-0.2μm, so as to ensure that the internal leakage reaches the requirement of 2 drops/min. 2. After processing, use the Mahr cylindricity meter imported from Germany to accurately measure each part of the hydraulic check valve through EasyForm software to ensure that the concentricity tolerance of each hydraulic check valve spool and valve hole is less than 0.005mm. 3. AAK ultra-high precision hydraulic valve was used by a Russian customer in the aviation field in 2019. That is already a fact, so the military industry is not a problem, too. AAK hydraulic check valve can be used in military industry. You can also have a try! https://www.aakindustry.com/info-d , etail/hydraulic-check-valve-aak288

A few days ago, someone left a message about a tweet that hydraulic cartridge valve manufacturer AAK posted on a B2B website: Do hydraulic cartridge valve manufacturers also need to promote? At most, advertise on Google. He meant that hydraulic cartridge valve manufacturers only need to advertise. I'm not sure whether he is a hydraulic cartridge valve manufacturer or a hydraulic cartridge valve customer, but his IP is from Türkiye. Whether it is a hydraulic cartridge valve manufacturer or an individual, in this online age, it seems that they cannot do without the 5 modules of sales promotion, advertising, public relations, planning, and brand. How can these key words be connected? I think of my previous experiences in bars, various chat ups in bars, and the promotion of hydraulic cartridge valve manufacturers, which are quite similar. You go to the bar and sit down. Not long after you walked in, a girl directly approached you and said that you are tall, wealthy, and handsome. This is called sales promotion. When you get excited, you want everyone in the bar to know that you are tall, wealthy, and handsome, and then spend money to have the DJ notify everyone in the bar that you are tall, wealthy, and handsome, which is called advertising. Since the advertisement has been launched, if you want to see the effectiveness of the advertisement, ask the bar owner to arrange a private seat and chat with the girl alone, saying that you are a wealthy and handsome person who is very reliable, which is called public relations. You ordered the most expensive red wine in order to further build your high wealth and handsome appearance. The bar arranged for 10 people to queue up and deliver it to you, attracting bar girls. This is called event planning. The girl knows that you are a tall, wealthy, and handsome person, and takes the initiative to approach you. This is called brand attractiveness, or the girl has developed a sense of trust in you. The hydraulic cartridge valve manufacturer AAK in China promotes its daily content with a slow heart and diligent hands, leaving AAK's footprint everywhere on the internet. Use our manufacturing quality and service to differentiate it from the hydraulic cartridge valve manufacturer peers, and use AAK's advantages, characteristics, and professionalism to build trust in the online space. Chairman Mao said that doing a good deed is not difficult, but what is difficult is doing a good deed for a lifetime. AAK said that it is not difficult to promote once, but it is difficult to promote every day. If I am fragrant, butterflies come naturally, and I insist on manufacturing quality, and benchmark against international top brands. With our advantages, characteristics, and quality, we differentiate ourselves from other hydraulic cartridge valve manufacturers in China. Only in this way can the road be smooth. Although it may be a bit difficult, difficult roads are never crowded and eventually arrive. AAK HYDRAULIC CARTRIDGE VALVES (667) 2023-09-08 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak667

For a hydraulic cartridge flow control valve, with many internal oil passage holes in different apertures and 60 ° seating holes, and the accuracy requirement below 0.8μm, Hemendra asked the most trusted local cartridge valve manufacturer to make samples. 3 weeks later, the manufacturer found that the scrap rate of the hydraulic flow control cartridge valve was more than 60%, and the efficiency was low, so he gave up. The other hydraulic cartridge flow control vale manufacturers had little interest in making samples. After AAK took over, it adopted a five-stage forming reamer from Germany, and the cutter has several blades with different diameters. This tool, solves the processing of all oil passage holes, and the hole accuracy is within 0.5μm, 40% higher than the original requirement. AAK hydraulic cartridge flow control valve enables Hemendra to receive the order for hydraulic cylinders successfully. Hemendra is from India, and has purchased hydraulic cartridge valves from AAK for 5 years. Some time ago, one of their hydraulic cylinders needed a customized hydraulic cartridge flow control valve, but encountered difficulties. He contacted me. After communication, I learned the difficulties he encountered in local hydraulic cartridge valve manufacturers. Because of the wasted time in the early stage, he needs AAK to send the hydraulic cartridge flow control valve sample within 40 days. According to his drawing, it is difficult to process the valve hole, but AAK has experience in this aspect. After 35 days, AAK sent 20 samples of hydraulic cartridge control valves. During CNY, Hemendra told me that the customer was satisfied with their hydraulic cylinder prototype and would like to place the annual order. He asked me to give priority to his orders for the hydraulic cartridge flow control valves. Hemendra also specially thanked me. The sample of AAK hydraulic flow control cartridge valve is not only delivered fast, but also stable in manufacturing quality, especially the valve hole accuracy reaches 0.5μm, which is 40% higher than the original requirement. AAK hydraulic flow control cartridge valve, in the finishing process, uses five-stage forming reamer, which is from Germany, and has multiple blades with different diameters. A tool, solves the processing of all oil passage holes, and the hole accuracy is within 0.5 μm, which is 40% higher than the original requirement. The reamer has a plurality of cutter teeth, and the reamer body is provided with a cutter bar, a cutter handle and a cutter. The reamer body is connected with the machine tool through the tool handle. The five-stage forming reamer can easily shape the 60-degree seat face. It is tapered and can be positioned. Especially, the tool has multiple blades with different diameters. Under the operation of our skilled workers for more than 30 years, the processing efficiency is high and the accuracy is guaranteed. AAK hydraulic flow control cartridge valve, is processed with good tool, by good craftsman, with high precision, you can also try it. https://www.aakindustry.com/info-detail , /flow-control-cartridge-valves-aak487

Phoebe comes from Greece, and has been purchasing hydraulic valves from Ningbo for 2 years. At the end of last year, their hydraulic power unit required a hydraulic pressure control valve, and Phoebe tested the sample from a cartridge valve manufacturer that had been cooperating for 2 years. During debugging, the equipment was unstable in operation, and it was found on site that it was rooted in the internal cone angle error of the hydraulic pressure control valve and the excessive axial grinding tolerance of the sealing circle. The original hydraulic pressure control valve manufacturer re-made samples two times, but the machining accuracy of the hydraulic pressure control valve still did not meet the standard. Phoebe realized that she needed to change the manufacturer of the hydraulic pressure control valve. After trying with another hydraulic pressure control valve manufacturer, the problem was not completely resolved for a month, and the boss was very angry that Phoebe was in a hurry and became anxious. In early March, Phoebe approached me through an introduction from peers in Ningbo. The first sentence of her email was: Can you ensure that each hydraulic pressure control valve is 100% leak free? For similar messages, AAK always gives reply as soon as possible, as the other party must have encountered difficulties in purchasing hydraulic pressure control valves. After communication, it was learned that the accuracy of the hydraulic pressure control valves produced by both previous manufacturers did not meet the standards. The root cause of the problem has been identified. Ensuring the hydraulic pressure control valve is 100% leak free is not difficult for AAK. AAK can make samples, and if the samples do not meet the standards, all fees can be refunded. After 35 days, AAK sent 10 samples of hydraulic pressure control valves. Today, Phoebe sent a PO for 300 hydraulic pressure control valves. Excitedly, the equipment has been running stably, and their engineer is satisfied with the machining accuracy of AAK hydraulic pressure control valve. The boss also praised her. AAK processed it in this way. AAK uses the TSUGAMI CNC precision automatic lathe imported from Japan, which can control the machining accuracy of each valve cage within 2 μm. At the same time, during the production process, the application of detection devices can capture test data at any time, and the machining accuracy of each inner cone surface is visible, ensuring that the error control range of the inner cone angle is ± 0.8 °, and the axial grinding tolerance of the sealing circle is 0.075 μm. This is a specialized three coordinate measuring instrument detection device designed by AAK based on the structural characteristics of the valve cage. This is not only a trick, but also a 100% leak free skill. Most of the hydraulic cartridge valve manufacturers in Ningbo can only imagine, but may not be able to do it. AAK hydraulic pressure control valve, with precision tips, no leakage, you can also give it a try! AAK HYDRAULIC VALVES (570) 2023-04-25 https://www.aakindustry.com/info , -detail/pressure-control-valve-aak570

Nancy comes from a hydraulic equipment company in the United States. In October last year, they developed a hydraulic power unit that used a hydraulic counterbalance valve. Nancy purchased the standard parts of SUN hydraulics counterbalance valve according to the model required by the engineer. During the commissioning of the hydraulic power unit, the oil cylinder shook and made abnormal noise shortly after the equipment was started. After checking the design principle and installation method, the engineer judged that the problem probably lied in the hydraulic counterbalance valve. They asked to replace it with a new hydraulic counterbalance valve, but SUN after-sales personnel said that there would be no problem with the SUN hydraulic counterbalance valve and were unwilling to replace it. The engineer tested the hydraulic counterbalance valve separately, and the parameters were also normal. The technical team was confused. The promotion date of the new equipment was coming, but the machine test was stuck now, and the boss was also very anxious. Nancy tried to consult with different hydraulic counterbalance valve manufacturers, but after a week, there was no progress. She found AAK on Google and left a message to us: After using SUN hydraulic counterbalance valve, the equipment commissioning was abnormal, but no abnormality was found in the separate test of hydraulic counterbalance valve. At first glance, there seems to be no solution. Our engineer suggested Nancy to provide working condition requirements, hydraulic schematic diagram and equipment abnormal video. After discussion, AAK technical team judged that there was a problem with the flow selection of the hydraulic counterbalance valve. I told her that the flow difference of the cylinder diameter ratio of their power unit was 2.3 : 1. Although this ratio could be used for the standard parts of SUN hydraulic counterbalance valve, its stability was difficult to be guaranteed. This was the reason why the oil cylinder vibrated and made abnormal noise during the test run. Their engineers also recognized the reasoning of AAK technical team and asked AAK to customize standard two-way hydraulic counterbalance valves with appropriate flow. 45 days later, AAK sent 20 hydraulic counterbalance valves for test order. 2 weeks later, Nancy informed by email that the test run was successful with AAK hydraulic counterbalance valves, and the oil cylinder jitter and abnormal noise were disappeared, which could also catch up with the promotion of the equipment. Purchased a hydraulic counterbalance valve with unsuitable flow, no one in the company could solve the problem. It was solved by using AAK non-standard customized hydraulic counterbalance valves. Our engineers redesigned the hydraulic counterbalance valve, converted the appropriate flow according to the cylinder diameter ratio, adopted small cavity and small flow, and added bypass damping at the control port of the hydraulic counterbalance valve to improve the control stability of the valve, which can also completely solve the shaking and abnormal noise of the oil cylinder. Nancy privately told me that the boss was very satisfied with her behavior. The problem that should have been solved by the technician was solved by the purchaser. The boss not only praised her in public, but also let her win double the year-end bonus. AAK hydraulic counterbalance valve, the non-standard customized design can replace SUN, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-counterbalance-valve-aak287

3 manufacturers made samples for a hydraulic cartridge relief valve but all failed. AAK solved the problem in the first time, and the cylindricity is within 0.002mm, and the hole accuracy is H7. 1 month after Juan received the samples of AAK hydraulic cartridge relief valve, he sent an order for hydraulic cartridge relief valve worth 12,000 dollars. The processing of high-precision hydraulic cartridge relief valve, the stability of its accuracy, and the processing efficiency have been criticized by highly demanding customers. Although there are more than 200 hydraulic valve manufacturers in Ningbo that can produce hydraulic cartridge relief valves, there are too many problems from samples to mass production. Although Juan from Argentina is an experienced purchaser, he has suffered 3 losses in selecting high-precision hydraulic cartridge relief valve manufacturers. 3 cartridge valve manufacturers took more than 6 months to make samples, but no one succeeded. Juan saw AAK website www.aakindustry.com on B2B. After browsing the website of AAK, he found that AAK has been cooperating with HydraForce, SUN Hydraulics and other first-line hydraulic valve brands for a long time. Feeling the specialty of AAK, he sent an email about a hydraulic cartridge relief valve. He specially required that the cylindricity of the hydraulic cartridge relief valve is within 0.002mm and the hole accuracy is H7. I told Juan that AAK made samples of the hydraulic cartridge relief valve with this type of cylindricity accuracy 5 years ago, and the customer's repurchase rate was also high. Maybe Juan was worried and did not reply to the email within 3 days. On the 5th day, he paid the development cost and asked AAK to make samples. 2 weeks later, AAK sent 5 hydraulic cartridge relief valve samples. 1 week later, Juan advised that AAK hydraulic cartridge relief valves had been approved by their engineers, then there was no further news. 1 month later, he suddenly sent a PO for this hydraulic cartridge relief valve worth 12,000 dollars. The reason why AAK can produce high-precision hydraulic cartridge relief valves, and the stability of precision and processing efficiency can be recognized by customers, is due to the following 3 points: 1.For this hydraulic cartridge relief valve, AAK uses a honing machine with sintered diamond tools for finishing. 2.We have additionally configured a tool magazine with 15 tool positions, which can automatically change tools, and add deburring tools. The tool change time is controlled within 10s, and the production efficiency can be more than 30% higher than that of peers. 3.XY axis worktable can automatically change holes for multi hole processing. The cylindricity before honing is 0.02mm, and the cylindricity after honing can reach 0.002mm. The correction ability of cylindricity is improved to nearly 10 times. AAK hydraulic cartridge relief valve, not only high precision, you are welcome to try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-relief-valves- aak417

Shirley comes from a hydraulic equipment company in the United States, who is an old employee of the company. She rarely fails in purchasing, and her cooperation with AAK is tepid. It was not until the cartridge hydraulic flow control valves purchased last year failed that she learned that AAK Hydraulic Valve was different from other hydraulic cartridge valve manufacturers, and now she is sending us more and more inquiries. At the beginning of the year before last, Shirley’s company sold the hydraulic power unit for metal extrusion equipment. Less than half a year, customers complained that the pressure of the power unit was abnormal, and even went on strike. During after sales service, it was found that the leakage was caused by the serious wear of the hydraulic flow control valve sleeve, resulting in abnormal equipment pressure. The original hydraulic flow control valve manufacturer replied that under the high-pressure working condition of 450bar and high-frequency use, it is unavoidable for the hydraulic flow control valve sleeve to be worn and the only solution is to replace with new one for free, but 5 months later, the same problem occurred again. The customer was not satisfied and complained directly to the boss. The boss was surprised that an old hand like Shirley would stumble. After investigation, it was found that this hydraulic valve manufacturer who had cooperated for 5 years ignored the details of high pressure and high frequency.   The boss asked her to change the manufacturer and replace those severely worn hydraulic flow control valves as soon as possible. Shirley thought of AAK, because at the beginning of the inquiry, AAK mentioned that this hydraulic flow control valve had special working conditions, if the material selection was not proper, it would be impossible to use it for 1 year or more. After learning of Shirley's procurement dilemma, AAK urgently produced 50 hydraulic flow control valves within 1 month for them to replace the current ones. 6 months after the trial order was delivered, Shirley informed us by email that the equipment installed with AAK hydraulic flow control valve was working well without any abnormalities, and I said there would be no abnormalities even in 1 year. Shirley admired the confidence of AAK Hydraulic Valve in quality, and ordered another 300 hydraulic flow control valves.   Under the high-pressure condition of 450bar, to get the hydraulic flow control valve used in high frequency a service life of more than 1 year or 2million times, AAK Hydraulic Valve uses 3 advantages to exceed peers.   1. The valve sleeve of AAK hydraulic flow control valve adopts 18Cr2Ni4WA high- strength alloy carburized steel. During heat treatment, carburize at 900~920 ℃, temper at 600~650 ℃, and then cryogenic treatment. In this way, the hardness of the valve sleeve is more than HRC65, and it is not afraid under the high pressure condition of 450bar. The difficulty of this material lies in heat treatment, while most of hydraulic valve manufacturers can not control this technology.   2. AAK has independently developed hydraulic valve durability test equipment, and carries out fatigue test on materials in combination with NFPA/T2.6.1 standards to ensure that each hydraulic flow control valve is qualified before shipment.   3. For the hydraulic cartridge valve with a service life of 2 million times under 450bar high pressure, AAK has customers who used them in aviation.     AAK hydraulic flow control valve, durable under high pressure and high frequency use, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak286

A while ago, there was an international parcel from Brazil on my desk. I thought it was from an old Brazilian client, Machado, who sends AAK hydraulic cartridge valves that need to be developed every month. That day, I was a bit busy and forgot to unpack the package. It wasn't until the next day that I received an email from Brazil that I learned it was a hydraulic cartridge pressure control valve sample sent by a new customer, Faba, as well as a specially designed valve spool. Faba mentioned in the email that he found hydraulic cartridge valve manufacturer AAK in China on Google and asked if AAK could customize the special valve spool of this hydraulic cartridge pressure control valve. After communication, we learned that he encountered a problem with the valve spool accuracy not meeting the standard when purchasing this hydraulic cartridge pressure control valve from the original manufacturer. Due to its unique shape and accuracy of within 2μm, the original manufacturer failed 3 times. I was curious why it is necessary to have a specially designed valve spool to match this hydraulic cartridge pressure control valve. Faba did not discuss it much, perhaps there are trade secrets or patents. He only asked, can AAK try a sample? Although we were not 100% certain, Faba's contempt has ignited our engineer's desire for challenge. We first thought about the materials and chose alloy steel with the same hardness but easy to machine. On the premise of ensuring the overall size of the valve spool, a rotary material reduction processing method is adopted to lay a solid foundation for the next step of grinding. The key lies in the presence of Japan's Mitutoyo contour measuring instrument to constantly check whether the accuracy under special shapes meets the standards After 50 days, 6 hydraulic cartridge pressure control valve samples were sent out. 6 weeks later, Faba informed us via email that although AAK changed the spool material of the hydraulic cartridge pressure control valve, the accuracy was within 2μm. The valves have been working for 4 weeks and no leakage was found yet. As long as the service life of the hydraulic cartridge pressure control valve reaches 12 months, they can fully promote their equipment. Meanwhile, Faba emphasized that the spool of this hydraulic cartridge pressure control valve cannot be revealed to any third party. For this hydraulic cartridge pressure control valve, I would like to summarize the AAK inspection and the customized fixture combined with the special shape of the valve spool to ensure that there is no deviation in the rotation of the valve spool. After installing the valve spool into a customized fixture, set a speed of 50mm/s, start the measuring instrument, and the built-in contact needle starts 360 degrees, and detects the surface geometry of the valve spool through multiple cycles. Due to the special shape of the valve spool, changes in its geometric shape cause displacement of the contact needle. The generated analog signal of the surface contour ratio is automatically converted into a digital signal, which is then collected and integrated into the program for automatic comparison. The core of testing is not only the customization of fixtures, but also the setting of rotational speed, which needs to be explored based on the surface geometry of the valve spool. The hard power of AAK is reflected in these soft actions. Most hydraulic cartridge pressure control valve manufacturers mechanically refer to the user manual of the measuring instrument during the testing process. AAK hydraulic cartridge pressure control valve, hard power, soft action, you can also give it a try! AAK HYDRAULIC CARTRIDGE VALVES (666) 2023-09-07 https://www.aakindustry.com/info , -detail/cartridge-pressure-control-valves- aak6 , 66

Margaret, from India, is an old hand in the procurement of hydraulic components, especially good at price reduction, and has little cooperation with AAK, basically small quantities of high requirement hydraulic valves. 1 year ago, she wanted us to develop a high requirement hydraulic flow control valve and promised that there will be big qty of reorders. After the trial order was sent, there was still no reorder, and I didn't want to push. In her email last month, she said that 160 hydraulic flow control valves tested last year were needed, and the price was required to be maintained and the fastest delivery time was required. This hydraulic flow control valve was used in hydraulic bending machine equipment, and the early test run was very smooth. The equipment was sold very well. Unexpectedly, 3 months later, customers complained about the weakness of the hydraulic system of the bending machine. Some valve spools and valve bodies of the hydraulic flow control valves were worn, causing leakage, resulting in the weakness of hydraulic system of bending machine. The original hydraulic flow control valve manufacturer believed that the bending machine was used with high frequency, so a small proportion of wear was normal, but Margaret's supervisor didn't think so. He predicted that there would be more and more complaints later. In fact, what his supervisor predicted was right. Margaret had to change the manufacturer. She contacted many manufacturers, but none of them was willing to develop it because of the small quantity or they couldn't meet her requirements. Margaret was worried at this time. Until receiving her email, I just knew that this hydraulic flow control valve had reorders, but were not placed with AAK, she came to me this time because she had no way. Frankly speaking, although AAK had existing procedures, I didn't want to produce this order for 160 pcs of quantity. It was not until her boss found my boss 3 days later that I gave a 1 month production time and a 50% increase in the quotation. Margaret still approved our S/C. She was criticized by her boss because they not only lost the payment to the original hydraulic flow control valve manufacturer, but also undertook an additional 50%. I estimate that Margaret will never dare to transfer the order of AAK again. I was thinking that if your hydraulic valve manufacturing quality and service level are high, in the communication with customers, you can be polite and dignified, neither humble nor overbearing, otherwise the customers don't take you seriously. The business should be done standing. Although AAK price of this hydraulic flow control valve has been increased by 50%, it has taught Margaret and me a lesson. I sent out 160 hydraulic flow control valves in only 2 weeks. Margaret was very grateful for my advance shipping, and we had mended the fences between us. It took us 2 months to test the sample of this hydraulic flow control valve. We knew its difficulties, and we solved it with 3 points: 1. The valve spool is made of 20CrNi2MoV high carburized bearing steel from Germany. Through secondary quenching + cryogenic treatment + low temperature tempering process, the molecular structure of the material is improved, the microhardness is 237 ~ 247 HV, and its wear resistance and contact fatigue performance are increased by more than 3 times. 2. Swiss machine tools are used for processing, coupled with AAK's own modified fixtures, human errors are eliminated. 3. We can achieve 3drops/min for this hydraulic flow control valve, which is benchmarked with HydraForce, while most peers can only achieve 5drops/min. AAK hydraulic flow control valve is not only wear-resistant, but also leak free. You can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak285

At the beginning of this year, Hedwig sent an email asking for an ultra-high precision hydraulic flow control valve, with drawings and working conditions attached. Hedwig comes from an Italian hydraulic equipment company and has been cooperating with AAK for some years. In the second half of last year, they planned to bid for a power unit for aviation hydraulic system but was blocked by the hydraulic flow control valve. The cylindricity of valve sleeve inner hole should be within 1μm, and the leakage during operation is absolutely not allowed to exceed the specified value. Hedwig found a hydraulic flow control valve manufacturer in Italy to test the sample. 1 month later, the equipment was debugged, but the accuracy of inner hole of hydraulic flow control valve sleeve was not up to standard, and the leakage volume exceeded the specified 30%. Hedwig contacted several non- standard customized manufacturers, but the cylindricity of the inner hole could only be in the range of 2-3μm. After more than 2 months, no progress had been made, and all components were complete, except for the hydraulic flow control valve. The bidding time was coming, and the boss was very unhappy. Hedwig was under great pressure. Hedwig thought of AAK, because only AAK met the requirements of the previous hydraulic valves with high accuracy. Later, I replied him that according to the drawings and parameter requirements of this ultra-high precision hydraulic flow control valve, AAK needed at least 45 days to complete the sample production. Hedwig said it was acceptable. After 40 days, AAK sent 20 samples of hydraulic flow control valves. 1 month later, Hedwig emailed that thanks to AAK ultra- high precision hydraulic flow control valve, the company won the bid. Hedwig told me privately that his boss was very satisfied with his purchasing work this time, and said that he would double the year-end bonus this year. He also wanted to know why so many manufacturers can't do it, but AAK can? I told him that the cylindricity of the inner hole of AAK hydraulic flow control valve sleeve was within 1μm by virtue of the following unique 3 points: 1. The process is the key and the technology is the core of the processing of valve sleeve inner hole. AAK adopts 6 process steps: deep hole drilling pre- holing, vacuum quenching, rough honing, semi fine honing, artificial aging treatment and fine honing, while most manufacturers can only do 3 steps. 2. AAK adopts American precision honing machine to hone the inner hole for 3 times, including rough honing, semi fine honing and fine honing, ensuring the cylindricity of the inner hole is in the range of 0.4-0.75μm. 3. Mechanic operation is also the most important, AAK adopts dedicated person and machine, not to say that human-machine integration, but at least as proficient as just like the left hand touching the right hand. AAK hydraulic flow control valve, can be used in aviation field. You can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak284

This Monday, we launched a solenoid valve equivalent to HydraForce standard part SP10-20. The features of this solenoid valve: Continuous-duty rated coil. Efficient wet-armature construction. Manual override options. Optional waterproof E-Coils rated up to IP69K. Industry common cavity. Metering option. The function of this solenoid valve: A solenoid-operated, 2-way, normally closed, poppet-type, proportional, screw- in hydraulic cartridge valve, designed for low leakage blocking and load- holding applications. When de-energized, the sp10-20xxx acts as a check valve, allowing flow from 1 to 2, while blocking flow from 2 to 1. When energized, the poppet lifts to open the 2 to 1 flow path. AAK has received 6 inquiries for this solenoid valve from January to April 2023, with 5 customers placed trial orders. This hydraulic solenoid valve is not only widely used, but also has multiple functions, especially its good performance. Although some China hydraulic cartridge valve manufacturers can produce this hydraulic solenoid valve, and its functions may also be compared to HydraForce standard part SP10-20, their solenoid valve performance may be a problem. AAK hydraulic cartridge solenoid valve 2 advantages: 1. Internal leakage: 5 drops/min, benchmarking against HydraForce 2. Its service life is 2 times that of its peers Technical parameters of AAK E-SP10-20 Hydraulic Solenoid Cartridge Valve: Max. Operating Pressure: 250 bar (3625 psi) Flow: See PRESSURE DROP VS. FLOW graph Internal Leakage: 5 drops/min max. at 250 bar (3625 psi) Operating Fluid Temperature: - 40 to 100 °C (with Standard Buna N seals) Cavity: 10-2  The newly launched AAK E-SP10-20 solenoid valve, benchmarking HydraForce, within 4 months, received 6 inquiries, and 5 customer trial orders. You can also try it out. AAK HYDRAULIC VALVES (569) 2023-04-24 https://www.aakindustry.com/info , -detail/solenoid-valve-aak569

Today is the first day of CNY's return to work. I opened mailbox and was full of surprises, especially the Mexican customer Chandler that we followed up for more than 1 year, placed an order, a large order of 1,200 hydraulic pilot operated cartridge relief valves. This is the happiest thing today. Chinese people pay attention to a good start, which represents hope, and also luck. 2023, I'm coming. A year ago, Chandler left a message on AAK Hydraulic Valve website: Can AAK ensure that the hydraulic pilot operated cartridge relief valve is stable and fault-free within 1 year? As soon as I saw this message, I guessed that he was troubled by the quality of the hydraulic pilot operated cartridge relief valve. After communication, it was learned that the cartridge relief valve produced by the original manufacturer was unstable and had a service life of less than 6 months, which caused their hydraulic winch to be complained because of its unstable operation and inability to rise. According to the drawing provided by him, AAK engineers found that the hydraulic system had a great impact on the valve spool and was greatly worn, so it was necessary to optimize the original structure of the hydraulic pilot operated cartridge relief valve. Chandler was a little dubious. After he learned that the shape and size of the hydraulic pilot operated cartridge relief valve would not need to be changed, he asked for AAK samples. After 35 days, AAK sent 20 hydraulic pilot operated cartridge relief valves. 3 weeks later, Chandler just told us that AAK hydraulic pilot operated cartridge relief valve could be installed in their system and the equipment operated normally, then there was no further information. 1 month later, I wrote an email to follow up, but there was no reply. Some time ago, we recommended a new model of hydraulic pilot operated cartridge relief valve equivalent to SUN hydraulics, and there was still no reply. Until CNY, he took the initiative to email us and placed a large order. Chandler said that after nearly 1 year of comparison and test, AAK hydraulic pilot operated cartridge relief valve has no problems in function, is stable, and its performance is satisfactory, and it is durable for 1 year without worry. AAK hydraulic pilot operated cartridge relief valve can quickly and stably overflow, can be adjusted remotely, and is durable, due to 3 special structures: 1. Inside the main valve spool of the cartridge relief valve, there is a spring connected with the inner wall of the valve body. In the upper space of the valve body, there is a pilot valve spool. The outer circle of the pilot valve spool is covered with a spring connected with the inner wall of the valve body. The two springs are inconspicuous, but effectively reduce the impact on the valve spool and improve the service life of the valve spool. 2. One side of the main valve spool is provided with a damping hole that can be connected with the inlet. The damping hole is connected with the position of the pilot valve spool, which can quickly and stably overflow. 3. A remote control port is set on the valve body, and the remote pressure regulation can be implemented by adjusting the hydraulic pressure at the upper end of the main valve spool. AAK hydraulic pilot operated cartridge relief valve, has stable function, satisfactory performance, and is durable for more than 1 year without worry. Welcome to try it! https://www.aakindustry.com/info-detail , /cartridge-relief-valves-aak488

In the field of industrial products, China has made rapid progress in recent years, with many proud scientific research achievements and patented technologies. In the hydraulic valve industry, Chinese hydraulic valve manufacturers have also begun to export, in these two years. Each hydraulic valve manufacturer has its own engineers and its own R & D department. What is R & D? Many hydraulic valve manufacturers confuse the concepts of "scientific research" and "innovation". Generally speaking, "hydraulic valve scientific research" is to convert money into hydraulic valve knowledge, which is a department that spends money, while "hydraulic valve innovation" is to exchange knowledge for money and create wealth for enterprises. They cannot be confused. Some scientific research institutions have only completed "scientific research", but rarely completed "innovation". It is a pity that some hydraulic valve manufacturers in the world have invested a lot of money in research and development, but they are only immersed in theory and have not become innovative pioneers in the industry. AAK Hydraulic Valve, "scientific research" and "innovation" are two teams with different offices, rather than the same office and the same team as most hydraulic valve manufacturers. If scientific research achievements cannot be combined with practice to create value for all walks of life, these theoretical achievements are like empty promises. It is undeniable that at present, the gap between Chinese hydraulic valve manufacturers and international famous hydraulic valve manufacturers in terms of scientific research and technology needs generations of excellent hydraulic valve manufacturers to catch up, but AAK's most important thing is the innovation of hydraulic valves. During walking, it's easy to forget the original intention. I often reflect on where AAK Hydraulic Valve focuses? The value of a manufacturing enterprise is not measured by the number of orders or output, but depends on its contribution to the industry. Just like a person, his fame or status is that the society has given you more trust and responsibility to promote social progress. Whether in the hydraulic valve industry or in society, try to be a person with feelings, temperature and style. How can it be satisfactory, but I want to be worthy of my heart. Make a supreme wish, enjoy a lower blessing, choose a high place to stand, and walk to a wide place. Whether the manufacturing of hydraulic valves is difficult or not, AAK insists on traveling with innovation and dreams. Because we are lucky to catch up with the tide of development in the era of industrial products, appreciate the era and contribute to the industry. AAK Hydraulic Valve, with innovation and dreams, is willing to walk with you together. https://www.aakindustry.com/i , nfo-detail/hydraulic-valve-manufacturers-aak283