Mechanical Hardware

Brooke is the purchasing manager of the American company Vickers and has been working with AAK for more than 6 years. One morning last month, he emailed us that his job was finally saved. I was surprised how a veteran suddenly said that he had finally "saved his job". In private, I learned that it was because he had some disagreements with his boss and quarreled. The boss almost let him go. Because his boss is not satisfied with the price of AAK, sometimes the price of AAK for the same hydraulic valve will be more than 20% higher than that of other Chinese hydraulic valve manufacturers. At the cost meeting last month, the boss proposed to replace the Chinese hydraulic valve manufacturer, but Brooke insisted that AAK is the most cost-effective Chinese hydraulic valve manufacturer, so it is not recommended to replace it. On the contrary, he can only leave. The year before last, the boss went to Shanghai PTC exhibition with him to develop suitable Chinese hydraulic valve manufacturers for cooperation. They did get acquainted with many Chinese hydraulic valve manufacturers at the exhibition, but after more than 2 years of testing samples and running in, Brooke found that there is really no second Chinese hydraulic valve manufacturer that can compare with AAK in all aspects. AAK is not only reliable, but also has temperature, whether it is cooperation, delivery, quality, after-sales etc. Brooke remembers the support and help from AAK hydraulic valve over the years. On one occasion, due to the urgent delivery time of a South African customer, Brooke could not find a factory with stock at that time and could only customize it. Most Chinese hydraulic valve manufacturers said that the lead time from sampling to delivery should be at least 2 months. AAK stopped a production line and asked technicians to work overtime to speed up the production. Samples can be produced in 30 days and shipped in 45 days. It is precisely because of the temperature of AAK that Vickers has the opportunity to cooperate with this big customer in South Africa. Every time, AAK products can be successful at one time during testing. They are the best among all Chinese hydraulic valve manufacturers in terms of accuracy, concentricity, fatigue resistance and durability. Brooke's deepest memory is that one time, the South African customer mentioned that the hydraulic valve used for more than 2 years often stuck during work and asked for replacement. After receiving the news, AAK immediately told Brooke to ask the customer to return the goods. After inspection, it turned out that the hydraulic oil used by the South African customer was not clean and caused the problem. Later, AAK disassembled and cleaned the valve and sent it again, and asked the customer to change the hydraulic oil. Until now, no problem has been mentioned. If this happened to other Chinese hydraulic valve manufacturers, their reply must be that this has passed the warranty period. After listening to Brooke's analysis, the boss instantly resonated. It is indeed too difficult to find another Chinese hydraulic valve manufacturer like AAK, who can always put the interests of customers at the first place. Sometimes, even if it is 20% higher, it is still worthy. At the same time, it was made clear at the meeting that AAK would be the first choice for them among Chinese hydraulic valve manufacturers in the future. AAK is the most reliable hydraulic valve manufacturer in China. It can solve difficulties for customers at any time. Welcome to give it a try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-valve- manufacturers-aak1 , 44

Erdmann has been a purchaser of German HAWE company for 5 or 6 years and has been doing very well. Last month, the company had a special hydraulic threaded cartridge valve to purchase. Because it is to be used in the Arctic region, the corrosion resistance of hydraulic threaded cartridge valve needs to be very high. The boss asked him to identify the suppliers and approve the samples within 2 months. Erdmann felt that it could be completed within 20 days. He sent the drawings of hydraulic threaded cartridge valves to the original hydraulic valve manufacturers. Only 2 weeks later, he received samples of hydraulic threaded cartridge valves from one factory. The surface gloss of these samples of hydraulic threaded cartridge valves was quite good. The company tested them on the exploration drilling machine and delivered it quickly to the customer. 3 months later, the customer complained that the hydraulic threaded cartridge valve on the hydraulic pump was seriously corroded, some threads were stuck, the equipment could not be started, and the test run was unsuccessful. The boss thought that Erdmann was careless and ignored the use scene of the Arctic region. The boss again asked him to make new samples and do salt spray test inside the company. Actually, Erdmann emphasized that the hydraulic threaded cartridge valve is to be used in the Arctic region. The original supplier said that their hydraulic threaded cartridge valves have good gloss and corrosion resistance, and can be used in the Arctic region. Erdmann communicated with the original hydraulic threaded cartridge valve supplier again, and the reply was that most hydraulic valve manufacturers just adopt the zinc plating process, and he used the nickel plating process which is the highest level of corrosion resistance. Erdmann realized the difficulty of corrosion resistance in the Arctic regions. Erdmann emailed more than 20 hydraulic valve manufacturers who had been contacted before, emphasizing that the hydraulic threaded cartridge valve must be in the highly corrosive environment in the Arctic region, and the service life shall not be less than 9 months. Only 3 hydraulic valve manufacturers said they could have a try, but there was no response from other manufacturers. Erdmann was a little flustered. Erdmann saw AAK hydraulic valve on Google, who supplied to hydraulic pump company in Russia. He felt that AAK might give him a glimmer of hope. He emailed us to ask if we can produce hydraulic threaded cartridge valves to be used in Arctic regions. We directly replied that the components of the valve should be treated by special electroplating process in order to meet the condition in the Arctic regions. After 20 days, AAK sent samples according to his hydraulic threaded cartridge valve drawings. HAWE company conducted salt spray test on samples from all 4 manufacturers, with the corrosion condition twice that of Arctic regions. More than 2 months later, Erdmann informed us that AAK hydraulic threaded cartridge valve had no red rust after more than 1500 hours of salt spray test. At the same time, the company's engineers determined that AAK hydraulic threaded cartridge valve had no problem to be used in the Arctic regions for 1 year. While the samples from other manufacturers began to produce red rust in more than 120 hours, and there were white corrosion products on the coating surface. Erdmann hesitated to report to his boss because the quotation of AAK hydraulic threaded cartridge valve is 30% higher than that of other suppliers. The surface electroplating process of AAK hydraulic threaded cartridge valve is zinc nickel alloy coating, which has high requirements for steel heat treatment. It may be difficult to find a second factory in Ningbo who can go through both of these two processes smoothly. In addition, the process cost is more than 5 times higher, but the corrosion resistance is more than 10 times higher than the general zinc plating and nickel plating process. With these data, the communicated between Erdmann with the boss is very efficient. The boss mentioned that for all those valves with high standard and high working conditions, just to choose AAK hydraulic valves. AAK hydraulic threaded cartridge valve will not corrode in the Arctic regions even after being used for 1 year. Welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-valves-aak136

AAK hydraulic directional control valve, which has been used for 2 years, is free of rust and corrosion. It stands out from 3 hydraulic valve manufacturers. Joseph finally received a large order for 1000 hydraulic directional control valves from customer. Joseph is the purchasing manager of a hydraulic pump company in Italy. Two years ago, the company received a test order for a special chemical hydraulic pump, which needs a hydraulic direction control valve. The customer requires that after 2 years, if the hydraulic directional control valve is free of rust and corrosion, it will have the opportunity to obtain a large order. The boss asked Joseph to find a very professional hydraulic valve manufacturer. Joseph knew that relying only on the existing hydraulic valve suppliers is not enough to guarantee the quality. He checked with all the hydraulic valve manufacturers he had contacted before and the new ones searched online, and selected 16 hydraulic valve factories, including AAK Hydraulic Valve. He asked all hydraulic valve manufacturers to provide 2 samples of hydraulic directional control valves according to the drawing requirements of the customer for testing at their headquarters. According to the post analysis to the drawing of hydraulic directional control valve from Joseph, we found that there is no problem to meet the accuracy, sensitivity and durability of this hydraulic directional control valve, except that the finish of the outer surface of the hydraulic directional control valve must be free of abnormality, rust and corrosion after 2 years of use, which is too uncertain. We didn't receive email from Joseph until 15 days after we sent out the hydraulic directional control valve samples. According to their simulation test, only the hydraulic directional control valves from 3 factories can be approved to send samples to their customer. It would take 2 years for AAK to know if we can get the order of hydraulic directional control valve. At that time, we were very surprised that there were such strange customers. We almost forgot the test order of this hydraulic directional control valve 2 years ago. Last week, Joseph sent an email asking about the production time and new price of 1000 hydraulic directional control valves, and told us that the surface of the hydraulic directional control valves from other two hydraulic valve manufacturers began to have scratches, corrosion, fading and rust after more than a year of use, only the surface gloss of AAK hydraulic direction control valve does not change. In fact, when we sent out the hydraulic directional control valve samples, we were not 100% sure to meet this special requirement, because we used a new process to proofing. We know that the conventional nickel plating, chromium plating, zinc plating, blackening and other processes basically can not keep the same appearance after 2 years of use. We adopted electroless nickel plating. The principle of this process is to generate a coating on the metal surface by solution chemical reduction reaction, and the coating is amorphous. After treatment, the surface of the metal is smooth, corrosion-resistant and wear-resistant, and the coating film has few pores and uniform thickness. At the same time, the hardness of the heat treatment can reach HRC70. After confirming the order, Joseph privately reminded us several times that the surface finish treatment of large goods should be careful. His boss said that after this order was shipped smoothly, there would be more and more inquiries later, and his salary was raised by 2 levels. AAK hydraulic directional control valve is rust free and corrosion free. It is still the same as the new one after being used for 2 years. Welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-directional-control-valves- aak135

Rex is a hydraulic valve wholesaler in Turkey. At the beginning of last year, their customer complained that the hydraulic cartridge relief valve, which has been used for less than 6 months, was stuck or worn, resulting in equipment shutdown. The original hydraulic cartridge relief valve manufacturer advised that under the equipment working condition of 450 bar, the hydraulic cartridge relief valve is likely to be abnormal, and the service life can be only guaranteed for 6-8 months. Rex realized that the hydraulic cartridge relief valve produced by this manufacturer was not reliable under high pressure. After checking with other hydraulic cartridge valve manufacturers, none of them was able to guarantee a service life of more than 1 year under 450 bar pressure. Rex was worried. Rex found AAK on Google. After staying at AAK website for more than 10 minutes, he found that AAK has hydraulic cartridge relief valve benchmarking HAWE, and is capable of high pressure resistant cartridge valves. He left us a message: Can the service life of AAK hydraulic cartridge relief valve be more than 1 year under 450bar working condition? After communication, it was learned that Rex was in a difficult position to purchase the hydraulic cartridge relief valve. I sent 6 cases of hydraulic cartridge valves with pressure resistance of 450bar for his reference. On the third day, Rex asked AAK to make samples per his drawing. He is open for the internal structure provided that the external dimensions were not changed, and the hydraulic cartridge relief valve had a service life of more than 1 year at 450bar. After 50 days, AAK sent 36 samples of hydraulic cartridge relief valve. 2 weeks after the samples were sent, Rex informed that AAK hydraulic cartridge relief valve worked normally on their equipment. Last week, Rex informed us via email that the equipment had been working for nearly 1 year without any customer complaint after being installed with AAK hydraulic cartridge relief valve. Their after-sales department is counting the number of the hydraulic cartridge relief valve that needs to be re-purchased. He asked me to wait for his further good news. This hydraulic cartridge relief valve can be safe under 450 bar high pressure for 1 year. In terms of material selection and material heat treatment, we follow the standards of HAWE, because AAK has engineer who has worked in HAWE for 13 years. At the same time, we have made 3 optimizations in the internal structure to challenge the high pressure. The optimized hydraulic cartridge relief valve has a buffering effect on the oil to avoid the impact of high pressure on the valve interior, reduce wear and avoid jamming, and has a 1 year of service life, which has been proved many times. 1. The hydraulic cartridge relief valve has an oil storage chamber and a buffer device inside the valve body, an adjusting nut outside the valve body, an adjusting screw cylinder inside, and a limit cavity, limit column, and a movable adjusting plate inside the adjusting screw cylinder. The screw connection between the adjusting screw barrel and the adjusting nut runs through the inside of the oil storage chamber. 2. The hydraulic cartridge relief valve has a built-in pressure regulating spring, one end is connected with a movable regulating plate, and the other end is connected with a piston. 3. The valve sleeve and threaded connection sleeve adopt the middle floating connection mode to avoid jamming. AAK hydraulic cartridge relief valve, the benchmark is HAWE, under 450 bar high pressure, it is safe for more than 1 year, welcome to try it! https://www.aakindustry.com/info-detail , /cartridge-relief-valves-aak525

This week, we’d like to introduce a hydraulic solenoid cartridge valve equivalent to HydraForce SV12-34. It is a solenoid operated, two position, three way, direct acting spool valve. Last January in 2022, a customer in Russia found AAK when looking for a hydraulic cartridge valve manufacturer in China on Google. She sent us an inquiry for 10 pcs of HydraForce cartridge valve SV12-34, along with several other HydraForce standard parts. However, AAK did not have existing programming for SV12-34 at that time and did not quote. Instead, the customer placed trial order for the other models.   This January in 2023, the customer checked with us again if AAK is willing to develop SV12-34 as per their original samples. Although they can buy SV12-34 from other hydraulic cartridge valve manufacturers in China, they do not trust their quality. Because the quality of the other trial orders shipped by AAK last year was very satisfying, they want to develop SV12-34 with AAK. In March, the development was finished and delivered.   Last week, we were very happy to learn from the Russian customer that the E- SV12-34 Solenoid Cartridge Valve developed by AAK is running very smoothly, the quality is very stable. They are going to ask AAK to develop more and more new models.   AAK hydraulic solenoid cartridge valve E-SV12-34 two advantages: 1. Pressure Rating 207 bar (3000 psi), benchmarking HydraForce 2. Its service life is 2 times that of its domestic peers   Technical parameters of AAK E-SV12-34 hydraulic solenoid cartridge valve: Pressure Rating: 207 bar (3000 psi) Flow Rating: see graph Max. Internal Leakage: 350 cc/min max. at 207 bar (3000 psi) Temperature: - 40℃ ~ + 120℃ (Std. Buna N Seals) Cavity: VC12-3   AAK E-SV12-34 hydraulic solenoid cartridge valve, benchmarking HydraForce SV12-34, has been approved by customer in Russia. You are welcome to give it a try.   AAK HYDRAULIC CARTRIDGE VALVES (724) 2023-11-27 https://www.aakindustry.com/info , -detail/solenoid-cartridge-valves-aak724

This Monday, we launched a hydraulic cartridge relief valve equivalent to HydraForce standard part RV08-20. It is a screw in, cartridge style, direct acting, poppet type, hydraulic relief valve intended for lower flow circuits requiring low internal leakage. The features of this hydraulic cartridge relief valve: Adjustments cannot be backed out of the valve. Variety of pressure adjustment options including non-adjustable factory preset. Optional spring ranges to 248 bar (3600 psi). Rapid response to pressure changes. Optional bi-directional pressure (requires bi-directional pressure seal option). Compact size. A customer in Turkey placed a test order for 10 pcs last June in 2022. After 1 year of testing, it proves that the function and performance of AAK hydraulic relief valve benchmarked the quality of HydraForce RV08-20. Today, we received their annual order for 1,000 pcs of qty. AAK hydraulic cartridge relief 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-RV08-20 Hydraulic Cartridge Direct Acting Relief Valve: Max. Operating Pressure: 250 bar (3625 psi) Flow: See PRESSURE DROP VS. FLOW graph Internal Leakage: 5 drops/min max. at to 80% of nominal setting Operating Fluid Temperature: - 30 °C to 100 °C (with Standard Buna N seals) Cavity: 08-2  The newly launched AAK E-RV08-20 direct acting relief valve, benchmarking HydraForce RV08-20, has been approved by customer in Turkey after 1 year of testing. You are welcome to try it out. AAK HYDRAULIC VALVES (614) 2023-06-26 https://www.aakindustry.com/info , -detail/relief-valves-aak614

Gaylord comes from Holland and is an old customer of AAK hydraulic valve. Some time ago, he emailed me to ask if AAK could optimize a hydraulic direct acting cartridge relief valve. After communication, I learned that at the beginning of the year, they had an order for a hydraulic power unit for high-precision machine tools, which used a hydraulic direct acting cartridge relief valve. Gaylord chose an Indian hydraulic cartridge valve manufacturer to make samples, and the equipment debugging was not smooth. The hydraulic direct acting cartridge relief valve had unstable overflow liquid, forming a jet, especially under low pressure, the stability of the system was poor. Although the function test of the valve was normal, it was still necessary to optimize the hydraulic direct acting cartridge relief valve, but 2 weeks later, the original manufacturer still had no solution, and Gaylord contacted me. According to his hydraulic system schematic diagram and the drawing of the original hydraulic direct acting cartridge relief valve, AAK engineers found the hidden danger of the original structure. Gaylord sent the PO of the test order. After 50 days, AAK sent 10 samples of hydraulic direct acting cartridge relief valves. A month later, Gaylord sent us an email. The equipment was adjusted smoothly. Under low pressure, the system was stable. The customer was also satisfied with the prototype. His engineers also admired the brains of AAK technical team. AAK hydraulic direct acting cartridge relief valve has good stability under low pressure conditions. The key lies in its unique structure: 1. The valve spool, spring, plunger and pressure regulating knob are successively installed in the cavity of the hydraulic cartridge relief valve body. The valve spool contacts the valve seat under the elastic force of the spring, and relies on the elastic force of the spring and the back pressure of the overflow port to balance the hydraulic pressure generated by the oil inlet. 2. The original poppet valve spool is changed into an integral ball type valve spool, and an annular gasket is set between the ball valve spool and the spring. The ball valve spool can automatically adjust the axial angle relative to the centering bearing, which improves the stability of the valve and ensures the low pressure stability of the hydraulic system. 3. Before assembly, the standard steel ball is used to punch the runner port and gasket port that contact the steel ball. The original wire seal is changed to ring seal to improve the sealing performance, so as to ensure the reliable contact between the gasket and the steel ball and realize the stable overflow function. AAK hydraulic direct acting cartridge relief valve, is also stable in low pressure, you can also try a small order! https://www.aakindustry.com/info-det , ail/relief-valves-aak450

AAK hydraulic pressure control valve is made of 100Cr2 bearing steel, with high hardness and high wear resistance. It also adopts distinctive heat treatment process, to ensure that the hydraulic valve has no cavitation. It takes only 2 weeks to solve the customer complaint and helps Erich out of the dilemma. Erich has been doing well in Linde company for several years. Recently, he was under great pressure due to a complaint. A hydraulic pump produced by Linde company went on strike after 8 months of use. The customer complained directly to the boss, who asked the after-sales department to find out the cause and solve it immediately. After inspection, the engineer found that mechanical damage had occurred on the metal surface of the pump, and the surface of the damage showed sponge like small holes, which should be caused by the hydraulic impact formed by the internal hydraulic system. At the same time, it was found that the hydraulic pressure control valve used in the system was the most serious, and no problems were found in other components. It was basically determined that the poor cavitation resistance of the hydraulic pressure control valve led to the strike. The boss asked Erich, who was responsible for the purchase of hydraulic pressure control valves, to re purchase hydraulic pressure control valves for these inoperable pumps within 20 days, to make sure no cavitation. Erich contacted the original supplier of hydraulic pressure control valve and informed him of the whole situation. The original supplier mentioned that before production, Erich didn't inform the current working condition. To meet this working condition, materials must be customized, which would not be allowed by the time, because it would take at least 40 days. Erich also contacted a number of hydraulic valve manufacturers and got the replies that they either could not meet the quality requirements or the time would not be enough. This is troublesome. It's too late for the 20 days of time frame given by the boss. Erich thought of AAK hydraulic valve, because he had a hydraulic pressure control valve sampled here last year, but didn't have any further contact due to AAK quotation was high. Erich asked by email whether AAK can solve the cavitation of hydraulic pressure control valve. According to the cavitation picture of the hydraulic pressure control valve provided by Erich and verifying the hydraulic working conditions, we replied that the materials used for this hydraulic pressure control valve need to be treated. However, AAK has inventory, because an American customer purchased similar hydraulic pressure control valves last month, we can send 4 samples of hydraulic pressure control valves within 14 days. After Erich received the samples of hydraulic pressure control valve, their engineers installed it for debugging and it can work normally. Erich asked us to prepare materials quickly. His boss asked to replace all the hydraulic pressure control valves in this batch to avoid further complaints from customers. At the same time, he asked us to ensure that the mass production should be stable and there should be no cavitation. The most important factor to avoid cavitation is the material selection of steel and the heat treatment of steel. According to the customer hydraulic working conditions, A AK selects 100Cr2 bearing steel and adopts carbonitriding heat treatment process. It is carburized at high temperature of 820-830 ℃ for 13 hours, then oil quenched, - 60 ℃ to - 70 ℃ cryogenic treatment and 150 ℃ to 160 ℃ tempering treatment. The whole molecular structure of the steel is uniform and the hardness can reach HRC68. After such heat treatment, the comprehensive properties are very stable, uniform hardness and good wear resistance. Wear resistance and high contact fatigue strength ensure no cavitation. AAK hydraulic pressure control valve, no cavitation, has the stability admired by customers, you can also give it a try! https://www.aakindustry.com/info-detai , l/hydraulic-pressure-control-valves- aak134

When I opened the mailbox this morning, I saw an email from Bruce, which should be a re-order for the hydraulic relief valve, because he asked about the durability of AAK hydraulic relief valve spool last week. Opening the e-mail, it is indeed the need for purchasing a large number of 420 hydraulic relief valves, and requiring 3 years of quality guarantee. Bruce is a purchaser of Konecranes in Finland. 3 years ago, a customer of his company complained that the crane was easy to depressurize during work, resulting in the inability of the crane to bear the force. Especially after the working temperature reaches 55 ° C, the pressure cannot go up. Field engineers believe that this is a problem of the hydraulic system, such as low pressure regulation of the hydraulic relief valve, wear of the hydraulic system, or oil pollution. No abnormality was found after inspection. Finally, it was determined that the fault occurred on the hydraulic relief valve. After disassembling the hydraulic relief valve, it was found that the cone valve spool was worn, affecting the sealing of the hydraulic system, so the oil pressure could not rise. The customer does not understand why the valve spool of this hydraulic relief valve is worn after less than 2 years of use. The customer requested to replace with a batch of hydraulic relief valves with durability of more than 3 years and use them on these 12 faulty cranes. At that time, Bruce contacted more than 10 hydraulic relief valve manufacturers and got reply that the warranty could not be achieved for 3 years. Some hydraulic valve manufacturers replied that they only have 50% confidence. This result embarrassed Bruce. The customer requirements for the hydraulic relief valve could not be implemented, how he should explain to the boss. I received message from Bruce on the company website of AAK (www.aakindusrty. Com): "can AAK really provide a 3-year warranty hydraulic relief valve? I replied directly: just give it a try then you will know. I can't make money with the trial orders of several samples, and you can't lose money. Maybe Bruce was stimulated and sent us the test order the next day for 4 hydraulic relief valves. Bruce also frankly told AAK that two other hydraulic valve manufacturers would also try the order at the same time. Their plan is that each factory will be tested for 4 samples, with a total of 12 hydraulic relief valves to meet the urgent needs of customer first. About 2 years after the samples were sent, we received email from Bruce again for another trial order of 8 hydraulic relief valves. I felt strange and thought that they actually didn't have big quantity order for hydraulic valves. Until last week, from his email, we learnt that they had tested the hydraulic relief valves provided by AAK for 3 years. Indeed, 3 years later, AAK hydraulic relief valves still worked normally, and the hydraulic relief valves provided by the other two manufacturers had faults in less than 2 years. According to the working conditions, we understand that the core of durability of the hydraulic relief valve from Bruce is the valve spool, so we use the bearing steel imported from Korea and use our brains in heat treatment. After hot rolling, the steel is spheroidized and annealed, and then cold drawn. The processed bearing steel has high hardness, high wear resistance and hardenability. It is difficult to find other steels to benchmark it. Wear resistance for 3 years is certain, and maybe there is no problem for 5 years. AAK hydraulic relief valve, impressed Bruce with its high durability. If you also encountered a hydraulic relief valve failure, just contact us to give it a try! https://www.aakindustry.com/info-detail/hy , draulic-relief-valves-aak133

Alvis is from Norway and has been in contact with AAK for 1 year. There were some inquiries for hydraulic manifold blocks, but no actual order. It was not until December last year that the trust door was completely opened. It took him 6 months for a special hydraulic manifold block, but it didn't work. AAK solved the problem with the first sample. A set of hydraulic manifold designed by Alvis will be exhibited in America. He selected a local hydraulic manifold block manufacturer that has cooperated for 3 years to try the sample, but the hydraulic system is unstable. The manufacturer advised that this hydraulic manifold block has many feedback oil circuits and control oil circuits, and the oil circuits is composed of small deep holes. The diameter of the damping hole is less than 1mm, and it is difficult to eliminate burrs for 100%, which may lead to blockage of the oil circuit. If the original design requirements of the hydraulic manifold block are not changed, the manufacturer would not be able to produce it. If the parameters are changed, the selling point of hydraulic manifold will be lost. Alvis is very distressed. He also tried to work with several other local hydraulic manifold manufacturers to make samples, but none of them is able to cooperate with him. In this way, 4 months have been wasted. Alvis wanted to try overseas hydraulic suppliers, and sent me an email. According to his hydraulic manifold block drawing, our technical team analyzed and discussed it, and concluded that if the original design was not improved, the burr hazard would still exist. Alvis seemed to think that AAK is unable to sample the hydraulic manifold block, so he did not have further contact with us. 1 month later, he came back to us again to discuss this hydraulic manifold block, and asked about our optimization plan. I realized that he was desperate, and told him that AAK did not need to change the parameters of the hydraulic manifold block, but only needed to increase the angle between the two planes greater than 150 °, but the best degree still needed to be explored. Alvis suddenly realized it and blamed me for not telling him earlier. I joked that he didn't give me a chance to tell him. After changing materials for 2 times, and adjusting the processing parameters for 4 times, it was determined that 158 ° would be the best angle. After 30 days, 3 hydraulic manifold blocks were sent out. 3 weeks later, Alvis told us that the hydraulic manifold was running stably, meeting the system requirements, and we just need to wait for the good news of the exhibition. He sighed that for this exhibition, he was in trepidation for 6 months, but did not expect that the first sample of AAK was successful. In the future, AAK will be his preferred supplier for hydraulic manifold blocks. This is also what I said before. Whether customers buy your products or not is not because of your poor price or long distance. The root cause is that the trust is not in place. AAK hydraulic manifold blocks, in regards to deburring method, the following 3 points are critical: 1. Select materials with small elongation and deformation hardening index to effectively suppress burr. 2. Optimize the valve body structure, the included angle between two planes shall be greater than 150 °, and the best degree shall be tested continuously. 3. Use high-pressure solution jet to remove burrs, use solution to weaken the magnetism of burrs, and then use the instantaneous impact force of liquid to ensure that the hydraulic manifold block is 100% burr free. AAK hydraulic manifold blocks, no burr, no pollution, no leakage, welcome to try! https://www.aakindustry.com/info-d , etail/hydraulic-manifold-blocks-aak390

Donald, a hydraulic valve customer from the United States, recently had an order for hydraulic valve sleeve parts with an old supplier. It took more than 30 days to adjust the approval sample of hydraulic valve sleeve for many times. The taper of hydraulic valve sleeve always failed to meet the customer requirement of 0.3-0.5μm. The manufacturer can only give up the order, but this wastes Donald's time. The trouble is that the customer is still urging the progress of the modification of the hydraulic valve sleeve. Donald consulted more than 30 hydraulic valve manufacturers online, but none of them can guarantee that the taper could reach 0.3-0.5μm. Only 2 manufacturers indicated that 1-2μm is the limit that they can reach. Donald plans to give up this hydraulic valve sleeve order, but he doesn't know how to talk to the customer. While Donald was worried, his colleague Smith gave him the contact information of AAK HYDRAULIC VALVE. Smith had inquired about the hydraulic valve with AAK before. Smith directly emailed us the inquiry requirements and the drawings of the hydraulic valve sleeve, and CC Donald. He asked us to communicate with Donald directly to see how to solve the taper requirements of the hydraulic valve sleeve. After our technical department had a meeting, they found that it was really a bit tricky. At present, they are not sure to tell the specific accuracy of the taper of the hydraulic valve sleeve. Except for the taper of the hydraulic valve sleeve, the straightness and roundness can fully meet the requirements. We can study the taper of the hydraulic valve sleeve while proofing. However, the specific parameters still need to be determined until the final samples come out. With a try attitude, Donald asked us to start sampling the same day. A week later, we sent out the samples of the hydraulic valve sleeve. A few days later, Donald asked by email if we could try again to improve the taper accuracy of our hydraulic valve sleeve from 0.8-1.2μm to 0.3-0.5μm to meet the customer requirement. AAK technical department made modification and adjustment for 3 days and 2 nights, and sent the modified sample of hydraulic valve sleeve on the 4th day. Donald soon informed that the parameters of the second hydraulic valve sleeve sample of AAK met the requirements. Donald is curious that more than 30 hydraulic valve manufacturers can't achieve the taper accuracy of hydraulic valve sleeve. How can AAK achieve it by making samples only in two times? As a precision part, the precision of hydraulic valve sleeve is guaranteed by operators and equipment, especially precision grinding is very important. For most hydraulic valve manufacturers, the length of the grinder they used is basically an extended grinder with a hole length of 120%. Although it can repair and maintain the hole straightness, the accuracy of the hydraulic valve sleeve can only be controlled at 1-2μm maximum. 3 years ago, AAK adopted a grinder with a length of about 90% of the hole length, which can reach 0.5μm taper, but not stable. The taper can only be improved to about 0.5μm until the cylindrical grinder is explored to replace the extended grinder. Our proofing master has been groping on the machine for more than 12 years. He has worked out the process step by step and constantly corrected the operation method to obtain the fixed process, so as to ensure the 0.3-0.5μm accuracy high requirements of the hydraulic valve sleeve. AAK hydraulic valve has been pondering precision and never stopped. You can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-valve-sleeve-aak132

A few days ago, the development department of hydraulic manifold manufacturer AAK received a financial reimbursement document for me to sign. The rework cost for a set of hydraulic manifold is over 20,000 RMB. The explanation from the development department was that the client's development time frame was quite tight. As soon as the first version of the drawings arrived, the sales department asked the development department to speed up the work. However, halfway through, the client provided the second version of the drawings, resulting in rework. But the customer does not accept this money, the reason being that the first version of the drawings did not have the signature of their engineers. Similar situations have occurred in other hydraulic manifold manufacturers before, but at no cost. The cost of rework was also compared to other hydraulic manifold manufacturers. Our sales team went ahead without customer confirmation, citing the short lead time. In order to cooperate with customers and improve their satisfaction, the result of such reckless actions was over 20,000 RMB without anyone paying for it. When I lead sales, I often demand that sales use 3 good performances to demand ourselves: first, our service should be good, second, the manufacturing quality of hydraulic manifold manufacturer AAK should be good, and third, to make customers say we are good. However, our sales blindly pursue customer satisfaction and blindly cater to it. Similar incidents may occur frequently in other hydraulic manifold manufacturers, but AAK's 3 good performances are built on the process. In fact, there are many customer demands that are fake or even incorrect. At this time, as a professional hydraulic manifold manufacturer, we must dare to correct them. If the hydraulic manifold manufacturer only follows the customer's ideas, either the service provided by the hydraulic manifold manufacturer is blindly followed, or the hydraulic manifold manufacturer itself is not professional. Essentially, hydraulic manifold manufacturers should be more professional than customers, which require us to be experts in marketing, at least half of an engineer's sales. The most basic principle for hydraulic manifold manufacturers, whether they are developing or producing standard parts, is that only after signing and confirming can the next step be implemented. If you don't follow the process and do it well, the customer may not appreciate you. If you do it poorly, no one will pay for the additional costs. Customer satisfaction refers to the actual gain of a customer divided by their expected value. Sometimes, reducing a customer's demands can actually improve their satisfaction. In the sales process, if hydraulic manifold manufacturers dare to refuse customers improper requirements, sometimes in this process, most customers are reasonable. For the development of this hydraulic manifold, the sales seem to want to provide customers with so-called value-added services, but the value-added that customers do not receive becomes a mutual consumption. Simply pursuing so-called satisfaction can lead to satisfaction. Sometimes, on the contrary, the hydraulic manifold manufacturer will do whatever the customer says and do whatever they say. Firstly, blindly doing so will not have a good effect. Secondly, the hydraulic manifold manufacturer cannot earn the respect of customers. Thirdly, customers may feel that hydraulic manifold manufacturers are not very professional. Fourthly, customers may feel that you, as a hydraulic manifold manufacturer, lack processes or rules, and may look down on you. Therefore, I often say that sales do not come from seeking, but from requirements, or customers come here in admiration of their reputation. Hydraulic manifold manufacturer AAK, restrains itself with 3 good performances, and attracts customers with professionalism. AAK HYDRAULIC VALVES (723) 2023-11-26 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak72 , 3

This weekend, many parents in China are focusing on their children’s college entrance examination scores and choosing universities. In China, the students are in a rat race, and the parents are also in a rat race. Nowadays, it seems that the industry of integrated hydraulic cartridge valves is also in a rat race in China. But in my style, I need to understand why first, then start, and then move steadily, at an appropriate speed. Although the China integrated hydraulic cartridge valve manufacturers are in a rat race for price competition, I have increased material and processing costs, improved the quality of various elements of integrated hydraulic cartridge valves, extended the performance of integrated hydraulic cartridge valves, and strive to achieve higher cost-effectiveness of integrated hydraulic cartridge valves. British writer Oscar Wilde said: There are only two tragedies in life, the first one is not what I want; The second tragedy is getting what I want. How can getting something be considered a tragedy? Because after getting it, I found out there was a mistake, not what I really wanted. I see others pursuing it, and I thought I should pursue it too. After obtaining it, I realized that it wasn't what I wanted. Engaging in manufacturing is like crossing a bridge, where one can only move forward with one heart, cannot turn back, and there is no bypass. In China, it has become the obsession of this generation to have children attend a good university, even graduate school if possible. But why go to college? What is the use of taking this course? This question is rarely considered. Today, a colleague of an integrated hydraulic cartridge valve talked to me about his child's situation. His daughter is studying at a university in Shanghai, majoring in customs declaration. His meaning is, "Don't worry about her now, wait for her to go abroad and pursue a master's degree after graduation, and then she must come back to inherit my integrated hydraulic cartridge valve career. I was surprised to ask: The things your daughter learned are not closely related to your integrated hydraulic cartridge valve. Even if she graduates from high school and can start taking over the integrated hydraulic cartridge valve career, why waste this time? His answer is: always look good on face! In fact, when it comes to going to school, not only should children think clearly, but parents also need to understand: if others go to college, does it mean that your children also need to go to college? A few days ago, it was reported that a courier uncle worked as a courier for 15 years, sending his child to college. Eventually, after his son graduated from college, he inherited his father's business and became a courier boy. This kind of thing cannot be considered news at all, because it is becoming more and more common in real life. In this era where master's degrees are everywhere and doctoral degrees are abundant, my personal opinion is that there is no need to exchange money and youth for a dispensable degree. It should be the style of every parent to make career plans for their children, cultivate their professional skills, and make them self-sufficient. My children, if they can go to college, will be instructed to study history or philosophy. After graduation, they will first go to the workshop to tighten screws and work at the bottom level of integrated hydraulic cartridge valves for 3 years, and then engaged on the sales of integrated hydraulic cartridge valves. If you are not as powerful, if you want to get along well in society, you should take it step by step from the bottom. The sincerity of the strong inspires admiration in people. The sincerity of the weak makes people feel like you're a fool. In the integrated hydraulic cartridge valve industry, the same applies. Only when your manufacturing quality is strong can customers have admiration for you. AAK HYDRAULIC VALVES (613) 2023-06-25 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valves-aak613

Joakim, from Greece, got stuck when he purchased the hydraulic cartridge relief valve for the first time from China. One of their hydraulic motors needs a hydraulic cartridge relief valve. Joakim purchased it from a cartridge valve manufacturer in Ningbo. However, during the test run, the motor was damaged due to the abnormal pressure buffering function of the hydraulic cartridge relief valve, which was also blamed by the engineer. The original manufacturer was not confident to improve the pressure buffering function of the hydraulic cartridge relief valve. Joakim contacted me. I sent two customer cases of how AAK optimized the buffering function of the hydraulic cartridge relief valve to Joakim. On the second day, he asked AAK to make samples. After 30 days, AAK sent 8 samples of hydraulic cartridge relief valve. 2 weeks later, Joakim told me that the customer approved their motor, especially their engineer was very satisfied with the pressure buffer function of AAK hydraulic cartridge relief valve. In contrast, 2 advantages come out: the hydraulic system is stable and the motor performance is improved. AAK hydraulic cartridge relief valve, no impact trouble. The optimized hydraulic cartridge relief valve pushes the buffer spring at a constant speed, so that the time for the overflow pressure to rise from low pressure to high pressure remains constant. When the opening pressure is low, it gradually rises to the rated pressure, effectively reducing the impact of the moment when the motor rotates and starts. 1. AAK hydraulic cartridge relief valve is equipped with a differential valve spool with an orifice, and the annular bulge on the outer surface is used to connect the spring. 2. The buffer valve sleeve is inserted into the cavity of the differential valve spool. There is a buffer valve spool and an oil pipeline inside. There is a buffer valve spool throttle hole between the oil pipeline and the buffer valve spool. The two oil pipes inside the buffer valve sleeve are connected by two throttle holes. 3. The buffer valve sleeve and the buffer valve spool are sealed by the screw plug, and the two ends of the buffer spring are fixed in the buffer valve spool and the screw plug respectively. At the same time, the spring stiffness coefficient on the differential valve spool is greater than that of the buffer spring. AAK hydraulic cartridge relief valve, no impact, 2 advantages, you can also try it! https://www.aakindustry.com/info-de , tail/cartridge-relief-valves-aak524