Leila is from Russia. It has been 2 years since she purchased cartridge valves from China. She has encountered difficulties in the accuracy and stability of hydraulic pressure control cartridge valves. In February of last year, their hydraulic pile driver was complained by customers about its inability after 6 months of use. After checking, it was found that the hydraulic pressure control cartridge valve had leakage. The original manufacturer of the hydraulic pressure control cartridge valve advised that that this valve spool accuracy requirement was high, some hole accuracy of the valve spool may be not up to standard and caused the leakage. It could only be re-produced, which took 60 days. The after-service sales had to deliver other pile drivers to the customer for use instead temporarily. The boss was not satisfied with the original hydraulic pressure control cartridge valve manufacturer, and required Leila to re-purchase the hydraulic pressure control cartridge valve, which must be completed within 40 days. Leila was under pressure.
Leila left a message on AAK website:
1. For the hydraulic pressure control cartridge valve, with accuracy of each valve spool is below 0.8μm and consistent, is AAK able to customize it?
2. Can AAK finish 20 customized hydraulic pressure control cartridge valves within 40 days?
3. The service life of the customized hydraulic pressure control cartridge valve shall be 18 months.
This is about the accuracy, production time and service life of the hydraulic pressure control cartridge valve. After communication, I learned that she had trouble with the stability of the accuracy of the valve spool, and saw the information of AAK hydraulic cartridge valve on B2B. I told her that AAK had encountered these 3 problems before, and there were also practical solutions for customers. Leila asked me to make samples according to her drawings. After 38 days, AAK sent 20 samples of the hydraulic pressure control cartridge valves.
Yesterday, Leila emailed us that the pile driver equipped with AAK hydraulic pressure control cartridge valve has been running for almost 1 year without leakage or complaint. AAK hydraulic pressure control cartridge valve has been approved by her boss. They are counting how many hydraulic pressure control cartridge valves need to be purchased to replace those with hidden dangers. With the recognition of her boss again, Leila was relaxed and pressureless. AAK hydraulic pressure control cartridge valve has fulfilled 3 major requirements of Leila, by making efforts in material selection of valve spool, component processing, equipment selection and quality control.
1. The valve spool material 20CrNi2MoV, imported from Germany, is adopted by AAK, combined with AAK's personalized carburizing pretreatment process, through secondary quenching + cryogenic treatment + low-temperature tempering process, the microhardness of the valve spool is 237~247 HV, and the service life of the valve spool has been increased by at least 3 times.
2. The processing equipment adopts Japanese OKK ultra-precision machine tool, and the old technicians operate the tool to ensure the accuracy of valve spool can reach 0.3-0.5μm. And the production efficiency is more than 30% faster than other machine tools.
3. In terms of the testing instrument, the German Diatest micro-pore diameter measuring instrument is used, which can inspect each valve hole accurately.
AAK hydraulic pressure control cartridge valve, has consistent accuracy and service life of more than 18 months. You can also try it!
AAK HYDRAULIC CARTRIDGE VALVES (508) 2023-02-20
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