Tools & Hardware

Peder is from a hydraulic equipment company in Peru. They mainly focus on logistics transmission hydraulic equipment. At the beginning of this year, customers complained about the unstable control and inaccurate positioning of the lifting hydraulic power unit they sold. The after-sales server judged on site that the problem was caused by the hydraulic cartridge needle valve in the system, but after the manufacturer's inspection, the parameters of the hydraulic cartridge needle valve met the requirements. The engineer asked the original manufacturer to optimize the hydraulic cartridge needle valve, but the manufacturer was unable to do it and gave up. Peder contacted more than 10 hydraulic cartridge valve manufacturers, but none of them had solution, Peder was very anxious. Peder found AAK website when searching in Google, and the background showed that he stayed for 9 minutes. He sent an email to ask if AAK has any optimization plan for the unstable control and inaccurate positioning of the equipment during operation caused by the abnormal hydraulic cartridge needle valves? According to the schematic diagram of hydraulic system and production drawings of hydraulic cartridge needle valve provided by Peder, after analysis, AAK engineers found that the original hydraulic cartridge needle valve design had shortcomings, and suggested a solution. Peder saw the hope and asked AAK to optimize the original design and make samples. After 45 days, AAK sent 40 hydraulic cartridge needle valves. Yesterday, Peder sent an email to inform that after using AAK hydraulic cartridge needle valves, the equipment has been running for more than 6 months. The customer has no complaints about unstable control and inaccurate positioning. AAK engineers only used a 6mm chamfer to remove the hidden danger of the original hydraulic cartridge needle valve. The overall flow coefficient of the hydraulic cartridge needle valve is required to increase with the increase of the opening. The inclination of the flow passage will have an impact on the pressure control of the throttle structure. The chamfering can reduce the generation of eddy currents, which guarantees the stability of the hydraulic cartridge needle valve from the source. AAK processed a 6mm chamfer at the chamfer position of the flow passage. This small trick reduced the average turbulent kinetic energy by 73%, reduced the pressure drop distributed at the outlet, and ensured the stability of the hydraulic cartridge needle valve. The flow can be adjusted steplessly to move or rise accurately and controllably under load, and the positioning is accurate. AAK hydraulic cartridge needle valve is stable in control and accurate in positioning. You can also have a small try! https://www.aakindustry.com/info-detai , l/needle-valves-aak434

Ewalz is from Turkey, and mainly purchases standard parts of hydraulic cartridge valves from Ningbo China. Recently, they developed a hydraulic manifold that requires the use of SUN proportional valves. He purchased it from a proportional valve manufacturer in Ningbo, and after 2 weeks of operation, the equipment experienced significant vibration. The on-site engineer found that the proportional valve was severely stuck. The original hydraulic valve manufacturer stated that this proportional valve is a replica of SUN, with fully calibrated parameters, but there are differences in performance. Ewalz was speechless and had to look for a new hydraulic valve manufacturer for this proportional valve. Ewalz browsed the AAK hydraulic valve website, stayed for nearly 15 minutes and left a message: 1.Does AAK have an existing program for benchmarking SUN proportional valves? 2.Can AAK completely solve the problem of valve spool jamming, vibration and noise? After communication, it was learned that the hydraulic manifold they developed was very tight on time, they had no time to customize it and could only choose the existing SUN proportional valve. The proportional valve produced by the original valve manufacturer has the same function as SUN, but has poor performance. This SUN proportional valve is widely used, and AAK have a record of 6 shipments last year. There has never been any jamming of the valve spool, and we have inventory, which fully meets his requirements. 2 weeks after AAK sent the SUN proportional valve samples, Ewalz informed us via email that the hydraulic manifold debugging was successful. 2 months later, Ewalz informed us that their engineers were satisfied with the AAK proportional valve. The root cause of unsatisfactory performance of the original valve manufacturer's SUN proportional valve lies in its accuracy. The vast majority of proportional valve manufacturers have a cylindricity machining accuracy greater than 5um, which is 70% lower than the SUN standard cylindricity. For the accuracy of proportional valves that is completely in line with the SUN standard parts, there are probably less than 3 hydraulic valve manufacturers in Ningbo China. AAK controls the accuracy of the proportional valve from 3 aspects: 1.AAK proportional valve spool control: The valve spool is produced using a German CNC lathe with one blade and then high-precision cylindrical grinding. The machining error is controlled within ± 1um, and the coaxiality and cylindricity are controlled within 3um. 2.AAK proportional valve hole control: Adopting Swiss honing processing, the accuracy can reach IT6-IT7 level, and the surface roughness can reach Ra0.2- 0.025um. 3.AAK proportional valve spool and hole fitting accuracy control: 30 years of experienced technician operation, fit tolerance zone hole H6, axis g5, fit clearance tolerance can reach 5-12um, valve spool without jamming. AAK proportional valve, no jamming, the manufacturing quality, function and performance, benchmarking SUN, you can give it a try. AAK HYDRAULIC VALVES (591) 2023-05-25 https://www.aakindustry.com/info , -detail/proportional-valves-aak591

Timothy from Italy has cooperated with AAK for 4 years. Our first cooperation started from hydraulic manifolds. In the first half of this year, their company planned to introduce a new, multi-functional hydraulic press at the exhibition. But the equipment debugging was not smooth, the operation efficiency was not high, and the energy consumption was also large. Their engineer thought that a certain hydraulic component on the hydraulic manifold was insensitive and caused the problem. But after independent test, the components were normal. After comparing with the original design drawing of the hydraulic manifold for several times, problem still was not found. The technology department and the purchasing department shirked each other, and the boss got angry. If they missed the promotion, the project team would be dismissed. Timothy contacted the original hydraulic manifold manufacturer, but the manufacturer had no idea. Timothy was worried. Timothy emailed me about the solution for this hydraulic manifold. I jokingly said that it seems that no inquiry was sent to me for this hydraulic manifold before. Timothy thought I didn't want to participate because it was not produced by AAK. He explained that this is the hydraulic manifold manufacturer designated by his supervisor. According to the hydraulic schematic diagram and hydraulic manifold drawing provided by Timothy, AAK technical team found the cause 3 days later. I told him that AAK was 90% sure of its success in redesigning and testing the hydraulic manifold. Timothy learned that there would be a 6,000 US dollars development cost for the hydraulic manifold. He hesitated and asked me to wait for the news. I was a little surprised. The time was burning fast, why still wait. I didn't ask. 1 week later, Timothy sent me the bank slip for the development cost and reminded me that I must succeed, otherwise he would be in trouble. After 45 days, AAK sent 6 hydraulic manifolds. Two weeks later, Timothy told us that the equipment installed with AAK hydraulic manifolds had a smooth trial run and would not miss the exhibition period. Last week, Timothy said that the equipment promotion was smooth and the reservation exceeded expectations. The boss was very happy. He suggested that I hurry up to prepare materials. The first order of their hydraulic manifold could be issued to AAK next week. The hydraulic manifold newly designed by AAK has 3 key points. It is difficult to find a third hydraulic manifold manufacturer in Ningbo who can take these 3 points into account at the same time. 1. The overflow circuit in the original hydraulic manifold system is changed into an automatic unloading circuit, and then matched with the AAK logic cartridge valve. In this way, the heating of the system is reduced, the working performance of the system is improved, and the energy consumption is reduced by about 20% compared with the original design. 2. The differential circuit design simplifies the hydraulic manifold system, reduces the operation cycle of the hydraulic system from 30 seconds to 20 seconds, and greatly improves the production efficiency. 3. The three pump oil supply of the original hydraulic manifold system is changed to the two pump oil supply, and the return oil pressure is used to directly cool the return oil. In this way, the series link of the system is reduced, the system pipeline is simplified, the energy is saved, and it is helpful for energy consumption and efficiency. Timothy told me privately that without the support of his supervisor for the development fee of 6000 US dollars for the hydraulic manifold, he paid it by himself. The boss was surprised by his actions and appreciated him. He gradually replaced the original supervisor. AAK hydraulic manifold, energy saving, high efficiency, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-manifolds-aak361

If someone asks you to write down the operation steps of "pouring the drink from the plastic bottle into the cup", 90% of people think it is simple, and 3 steps are completed: 1. Open the bottle cap. 2. Pour the drink into the cup. 3. Close the bottle cap. I read in a book by a Japanese writer that it is actually 15 steps, rather than the 3 steps that 90% of people think. Pour a drink, take 15 steps, maybe you will laugh in your heart. Look at the decomposition action of pouring drinks by the Japanese writer: 1) Pick up the plastic bottle with your left hand 2) Grasp the cap with your right hand 3) Rotate the bottle cap anticlockwise to unscrew it 4) Put the bottle cap on the table 5) Change your right hand to hold the plastic bottle 6) Take the plastic bottle over the cup 7) Tilt the plastic bottle downward 8) Pour it to an angle that can make the drink pour out little by little 9) Restore the plastic bottle to the vertical state after pouring the drink 10) Put the plastic bottle on the table 11) Pick up the bottle cap with your right hand 12) Pick up the plastic bottle with your left hand 13) Put the bottle cap on the plastic bottle mouth 14) Turn the bottle cap clockwise and tighten it 15) Put down the plastic bottle with screwed cap What did you think of and what should you do? Seeing this, I quickly put down my book and drank some water, it is exploration in my eyes, admiration in my heart, and details of actions. In the workshop of hydraulic valve production, if every operation procedure of our company is more than 15 steps of the Job Manual, and it is written in such a deep and detailed way, then there will be no deviation in the staff training. No matter which operator is changed to operate, everyone is unlikely to make mistakes. I asked the production manager, production engineer, workshop director, section chief and operator of AAK Hydraulic Valve to reformulate the Job Manual of AAK Hydraulic Valve according to the 15 step beverage pouring method. They are also surprised, but they are very motivated to do this deep decomposition. Not only in the workshop, but also in the marketing department of AAK Hydraulic Valve. In terms of marketing, promotion and sales, how to manage the behavior in a specific and detailed way, rather than some abstract and non specific instructions that cannot be executed. Those mega enterprises may say "correct nonsense", but if we imitate it, we can not even know how we “die”. The Chinese language is really broad and profound. I have seen similar workshop propaganda in other hydraulic valve manufacturers before, "strengthening communication between operators", "Learn from old technicians" and "tidy up the operation post". "Work harder on accuracy to improve customer satisfaction". At that time, I was curious about the enterprise culture of the manufacturer. Now think about it again, these can't be called "behaviors", just slogans. Slogans on the wall, is it useful? No amount of abstract words can become a workbook. Our own personal behavior is also a reference. In our manners, behavior and other minor aspects, make up a solid lesson. Finally, we will review why it is difficult to persist in marketing and promotion. If you have never been to the seabed, how do you know about the underwater world? There are only 2 reasons for "not doing well": ① not knowing the "method". ② Know the method, but do not know "how to persist". AAK Hydraulic Valve, not only know, but also insist. https://www.aakindustry.com/info-de , tail/hydraulic-valves-aak360

Rogelio is from Spain and we met 1 year ago. He sent inquiries about hydraulic cartridge valves to AAK for several times. Some time ago, he came to me and asked for help to make a batch of hydraulic cartridge needle valves. The hydraulic cartridge needle valve used on the hydraulic cold drawing machine they sold to Vietnam has expired the warranty period and needs to be replaced. This hydraulic cartridge needle valve is purchased from HydraForce, and it is not a standard part. HydraForce said that this valve was produced 2 years ago, it is out of stock now and will take 3-4 months to produce it. But the customer was not satisfied with this time frame and complained to his boss. In order to catch time, Rogelio contacted more than 10 Chinese manufacturers of hydraulic cartridge needle valves. They either could not benchmark with HydraForce, or they could not meet the time, so Rogelio was anxious. Rogelio remembered that AAK had supplied HydraForce for 9 consecutive years. He believed that I can help him. According to the hydraulic cartridge needle valve drawings provided by Rogelio, the production time is only 30 days. I told him that the lead time was only 30 days, and the manufacturing quality of hydraulic cartridge needle valve was up to the standard of HydraForce, few Chinese hydraulic valve manufacturers could meet these requirements. Rogelio thought that I was ready to give up, he was willing to give AAK 40 days and paid for 100 hydraulic cartridge needle valves the next day. 30 days later, AAK sent 100 hydraulic cartridge needle valves to their Vietnam factory. Rogelio informed by email last week that it was out of his expectation that AAK still completed the production in 30 days. Their customer was very satisfied with their replacement of the hydraulic cartridge needle valves. Rogelio also specifically mentioned that he had asked more than 10 hydraulic cartridge needle valve manufacturers, their lead time was at least 50 days and can not 100% guarantee to benchmark the manufacturing quality of HydraForce. AAK was the only one that could catch up with the delivery date and also benchmarked the manufacturing quality of HydraForce. For this non-standard hydraulic cartridge needle valve, AAK has 3 advantages, which are beyond the reach of most hydraulic cartridge valve manufacturers: 1.AAK adopts Japanese OKK ultra precision machine tool, and the machining accuracy of components can reach 0.01~0.3μm. The precision of shape and contour is 0.003 - 0.1μm. Its production efficiency is 30% higher, which is the cornerstone of AAK's ability to catch up the delivery. 2. AAK has been hydraulic cartridge valve ODM manufacturer of 3 world top 500 companies for 10 years. Its quality control process is more strict than the ISO certification system. We have been focusing on details and constantly optimizing technology. 3. From material selection, process configuration, technical processing, production line quality control, component testing, workpiece surface treatment, benchmarking HydraForce, some of them are even beyond it. AAK hydraulic cartridge needle valve, benchmarking HydraForce, welcome to make a small trial! https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-needle-valves- aak359

Some people say that the conflict between Israel and Palestine will stimulate the foreign trade market. Some hydraulic manifold manufacturers in China say they need to stock some standard hydraulic manifold parts or hydraulic cartridge valves that can be used in the military industry. I'm a bit surprised. I've only seen hype about consumer goods and fast moving consumer goods. Have you ever seen anyone hype about hydraulic manifolds and hydraulic cartridge valves? The heart to make a fortune can exist, but it must be obtained in a proper way. For the conflict between Israel and Palestine, God's way is higher than man's. For hydraulic manifold manufacturer business dealings, honest is better than shrewdness. The shrewdness of hydraulic manifold manufacturers can only win for a while, and the honest of hydraulic manifold manufacturers can win for a lifetime. Whether it is an individual or a hydraulic manifold manufacturer, both the scheming and honest are seen by heaven. In this lifetime, no matter what age, one must be an honest person. Hydraulic manifold manufacturers operate their business, regardless of the country of origin of the order, and they must do a honest business. Hydraulic manifold manufacturer AAK, focusing on the stability of manufacturing quality and benchmarking against the international market, has been supplying 26 countries for 13 years. Hydraulic manifold manufacturer AAK relies on 3 strengths. 1) The hard strength of the manufacturing quality of the hydraulic manifolds 2) Adhere to the ingenious strength of hydraulic manifolds peripheral innovation 3) Focus on the soft power of online trust of hydraulic manifolds When hydraulic manifold manufacturers do overseas business, they aim to build their own trust on the internet. Without trust, it is difficult to make a deal. Whether it's the conflict between Israel and Palestine, or the business fluctuating of hydraulic manifold manufacturers, Emotions are like tides; pain is like waves, with ups and downs. By calmly witnessing our thoughts and emotions, we can learn to accept them as they are without making negative reactions. Hydraulic manifold manufacturer AAK, can rely on 3 strengths, but someone do not think so. I do not evaluate whether it is right or not. A pessimist is always right, but an optimist always makes money. Hydraulic manifold manufacturer AAK, has maintained 3 strengths and always remains optimistic. AAK HYDRAULIC VALVES (692) 2023-10-14 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak69 , 2

Belleville Washers DIN6796 also be known as "Conical Spring Washers", "Heavy Duty Bolting Washers", "Heavy Duty Safety Washers", "Spring Washers", "Belleville Springs", etc. Belleville Washers are widely used in industries such as national defense, metallurgy, engineering, electric power, machine tools, etc. Heavy Duty Safety Washers DIN6796 is a specialty version of Belleville Spring Washer used to improve security of bolt connection, manufactured as per DIN6796 standard. It is applicable to the static bolting applications in the medium and high strength range. Belleville Washers supplier helps to balance the stress relaxation in bolt / nut assembly, and has the following functions for loss of preload force, thermal expansion and contraction, and compression of seals caused by wear, deformation and creep of wearing parts: a. Have enough elasticity to improve the whole elasticity of the connecting pair. b. The inherent elastic force can compensate for the loss of preload force, meet the clamping force requirements, and ensure the reliability of the connection pair.

Disc Springs for Valves, also be known as Belleville Springs for Valves, Belleville Washers for Valves ... Disc springs are widely used in various types of valves such as Ball Valves, Regulating Valves, Globe Valves, Pigging Valves, and Sea Valves. The load of Disc Springs is large with small deflection, they can provide sufficient valve seat sealing force. The role of the Disc Spring inside the valve is to maintain sufficient contact pressure on the joint. Using Hegong Disc Springs Stacks either in series or parallel, obtain the required force and stroke, to meet the needs of each valve. Disc Springs Stacks apply a pressure and absorb the contraction and expansion that may occur due to pressure, temperature, or relaxation. Depending on the working environment, Belleville Springs for Valves can be produced by material such as Inconel750, Inconel718, 17-7PH. These materials have good corrosion resistance and high temperature resistance, can also provide adaptable working loads under harsh conditions and high temperature environments. Disc springs are the key part to fix Ball Valve, its performance will directly affect the sealing effect of the valve. When we design and manufacture Disc Springs for Ball Valves, we should pay attention to the following points.

Disc Springs for Ball Bearing, also be known as “Bearing Preload Disc Springs”, they are assembled with the radial ball bearings, act as a compensator of thermal expansions during their working. Using Disc Springs to preload radial ball bearings, helps to maintain positioning accuracy, eliminate shaft end play, and minimize vibration and shaft deflection by distributing the load evenly around the bearing race, extends the bearing life, eliminate excessive running noise. In most cases, the outer race of the ball bearing is preloaded with the Disc Spring, and in some cases it is desirable to preload the inner race of ball bearing.  The recommended load value is achieved when the disc spring is deflected to 75% of the initial cone heights (ho). The proper designed ho/t ratio makes a load of disc spring remains nearly constant for a large deflection range.  Disc springs for valves are designed to operate within 20%-80% of their total deflection. Misuse can result in overload, bigger error, or premature fatigue failure. If your working environment requires disc springs to work outside this range, HEGONG SPRING ® engineers can provide guidance or recommend other solutions. Be free to contact with our engineers Tech@DiscSpringsMFG.com.

Cryogenic Disc Springs made of Cryogenic(high temperature) resistant material as Inconel 718 , 750 , Nimonic 90 , these disc springs are applied for high temperature&cryogenic(from -50°C up to +500°C) environment and ultra-high temperature&cryogenic(from -250°C up to +700°C) environment. Cryogenic Disc Springs(High Temperature Disc Springs) are widely used in Valves, Heat Exchangers, Boilers, Industrial Furnaces & Ovens, Cryogenic Technology, Special Chemical circumstances, etc. HEGONG Cryogenic Disc Springs are designed & manufactured according to DIN2092 & DIN2093, GB/T 1972-2005, and ISO 19690. The engineers of HEGONG SPRING ® are pleased to design the springs for the specific applications together with the customer’s R&D department. Be free to contact with our engineers Material: The common material for wholesale Cryogenic Disc Springs include: 30W4CrVA, H13, X22CrMoV12-1, CuBe2, Inconel 718, Inconel 750, Nimonic 90.

High Temperature Disc Springs High Temperature Disc Springs made of high temperature(Cryogenic) resistant material as Inconel 718 , 750 , Nimonic 90 , these disc springs are applied for high temperature&cryogenic(from -50°C up to +500°C) environment and ultra- high temperature&cryogenic(from -250°C up to +700°C) environment. High Temperature Disc Springs (Cryogenic Disc Springs) are widely used in Valves, Heat Exchangers, Boilers, Industrial Furnaces & Ovens, Cryogenic Technology, Special Chemical circumstances, etc. Hegong High Temperature Disc Springs are designed & manufactured according to DIN2092 & DIN2093, GB/T 1972-2005, and ISO 19690. The engineers of HEGONG SPRING ® are pleased to design the springs for the specific applications together with the customer’s R&D department. Be free to contact with our engineers.

Corrosion Resistant Disc Springs, made of stainless steel, such as SUS301, SUS302, SUS316, 17-4PH, 17-7PH, 15-7Mo, their resistant to corrosion is higher than general Disc Springs made of spring steel, so they also be known as "Stainless Steel Disc Springs". Stainless Steel Disc Springs are also widely used in National Defense, Metallurgy, Petrochemical, Wind Power, Engineering, Food Processing Equipment, etc.  In addition to Stainless Steel Disc Springs , High Temperature Disc Springs, Cryogenic Disc Springs are suitable for high temperature or Cryogenic applications, you can choose according to the application requirement. Corrosion Resistant Disc springs manufacturer are designed & manufactured according to DIN2092 & DIN2093, GB/T 1972-2005, and ISO 19690. The engineers of HEGONG SPRING ® are pleased to design the springs for the specific applications together with the customer’s R&D department. Be free to contact with our engineers.

Disc spring can be used in a single piece, as well in multi pieces with different combinations. disc springs stack set is usual to use disc spring stacks with various combinations to meet your specified applications. Description The required various load/deflection characteristics of Belleville disc springs China can be obtained from the various stacking combinations. The stack combination methods and load&deflection relation as the table below. The designed & expected load/deflection characteristics of disc springs stack just be reached under the correct installation. A guiding element is necessary to keep the Hegong disc springs stack in position. This should preferably be a mandrel. HEGONG SPRING® can deliver disc springs stack pre- assembled on a guiding element and highly recommend this way. Advantages of wholesale disc springs stack: 1. Provide specific load/deflection data for the whole set of disc springs stack. (HEGONG SPRING®’s load testing machines can measure loads up to 4000KN) 2. Small load tolerance 3. Easier to install

Belleville Disc Springs also was called "Disc Springs" "Conical Disc Springs", include disc spring stacks, Corrosion Resistant Disc Springs, High Temperature / Cryogenic Disc Springs, Disc Springs for Ball Bearing, Disc Springs for Valves. Disc Springs are widely used in petrochemical, electric power, metallurgy, engineering, machine tools, national defense, and other industries. Bearing Preload Disc Springs manufacturer Description The Disc Spring concept was first invented by a Frenchman Louis Belleville in 1865. So, disc spring is commonly known as Belleville Springs. And sometimes it also was called "Conical disc springs" "Belleville Disc Springs" or "Belleville Washers". Hegong Disc Springs are conically washers and have a rectangular cross- section, which is loaded in the axial direction. It has a small volume and large energy storage compared to traditional helical springs and can be used as a single disc spring or in the stack (stack in parallel, in series or parallel & series combination). The standards for disc springs mainly include DIN2092 (Calculation) / DIN2093 ( Quality Specifications-Dimensions ) of Germany, JIS B 2706- Japan, GB/T 1972-2005 of China and ISO 19690 : 2017 ( HEGONG SPRING ® is the drafting team member for international standard ISO 19690 : 2017 and Chinese national standard GB/T 1972-2005 ). Among them, DIN2093 is most widely used in the world. belleville washer design are designed & manufactured according to DIN2092 & DIN2093, working for dynamic or static applications. The engineers of HEGONG SPRING® are pleased to design the springs for the specific applications together with the customer’s R&D department. Be free to contact with our engineers. Tech@DiscSpringsMFG.com. Genera , lly, disc springs include disc spring stacks, Corrosion Resistant Disc Springs, High Temperature / Cryogenic Disc Springs, Disc Springs for Ball Bearing, Disc Springs for Valves. Surface Condition And Corrosion Protection: Polish Phosphating and oil Mechanical Zinc Plating Chemical Nickel Plating Docromet / Geomet Coating Electrophoresis Tolerance: The Tolerance is according to DIN2093 standards Belleville Spring Washers exporter Specification: The following specification table covers the "standard" sizes and some non- standard sizes. HEGONG SPRING ® customizes Belleville Disc Springs as well. The max OD is up to 1000mm. If you require the custom Belleville Disc Springs, please contact our sales engineers.