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For the hydraulic flow control valve with 4 unsuccessful proofing, Thomas gave up the supplier cooperated for 4 years and chose AAK

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Update time : 2022-09-19 11:15:13

The supplier who have cooperated for 4 years have failed to solve the problem of valve hole deformation caused by the assembly force of hydraulic flow control valve for 4 times of proofing. After AAK changed the process, not only did the accuracy of the hydraulic flow control valve hole reach the standard, but also the operating efficiency of hydraulic system equipment was improved by 5%. This is the first time for Thomas to receive such a surprise from a Chinese hydraulic valve manufacturer.

 

Thomas is from a hydraulic company in the United States. He has been in contact with me for 3 years. In addition to quoting prices and sending hydraulic valve samples several times, he has never placed an order. I laugh at myself that fate has not come. 3 months ago, a PO for hydraulic flow control valve worth more than 20,000 US dollars was sent to us suddenly, which scared me. It was turned out that a supplier who had cooperated with him for 4 years, could not solve the problem of this hydraulic flow control valve even after 4 times of proofing. Under the assembly force of 90N • m * 4, the deformation of the valve hole reached 0.013mm, which did not meet their accuracy requirements, and the original manufacturer had to discuss the delivery date again because of the several failures of the hydraulic flow control valve samples. Thomas realized that the manufacturer had to be replaced, so he contacted AAK.

 

Thomas said that he had been tracking AAK for the past 3 years because his company required that any new supplier should have a 3-year investigation period. Every time AAK sent samples, he would be surprised. He also looked forward to the surprise of the hydraulic flow control valve this time - the sample time and the sample quality. He also reminded me that several suppliers have given up to try directly before he chose the current supplier. I realized that this hydraulic flow control valve PO was a hot potato. If it was messed up, the fate of 3 years would be zero.

 

Is it a surprise or a fright? We have to fight. The AAK technical team separated the drawings of the hydraulic flow control valve step by step and realized that it was really difficult to process this hydraulic flow control valve, but they also had ideas. 3 weeks later, the master of the sample fed back that the deformation of the hydraulic flow control valve bore was still not up to the standard. Moreover, excessive wear of calipers and oilstones leads to low honing efficiency, and the scrap rate reaches 3%. Even if the sample is successful, the mass production is also a hidden danger, and the production process must be changed. After 5 days, the master tried to pre assemble the hydraulic flow valve body and left it for 2-3 days. Before honing, rough reaming with diamond reamer is used to correct the roundness deviation of the valve hole of hydraulic flow control valve due to assembly preload and creep. The whole honing time is shortened from 210s to 60s. With the improved production process, the production efficiency was increased by 150%, and the scrap rate was reduced to 0.5%. After 5 weeks, 12 hydraulic flow control valve samples were sent out.

 

2 weeks later, Thomas informed by email that the technical parameters of AAK hydraulic flow control valve had been confirmed, especially the accuracy of the valve hole, which surprised him. For the hydraulic flow control valve that the original manufacturer could not fix for 4 times, AAK was successful at one time. What made his engineers more happy was that the operating efficiency of the hydraulic system of the equipment equipped with AAK hydraulic flow control valve increased by 5%. This is the first time to receive such a surprise from a Chinese hydraulic valve manufacturer.

 

AAK hydraulic flow control valve brings only pleasantly surprise, not frightening surprise. You can also have a small try.

 

AAK HYDRAULIC CARTRIDGE VALVES (354) 2022-09-19

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