AAK Hydraulic Cartridge Pressure Control Valve Performance 2 Million Times

Davis comes from a hydraulic equipment company in the United States. He has
cooperated with AAK for 4 years, and it is very smooth. It is strange that
since an inquiry of hydraulic pressure control valves in the second half of
last year, there has been no new inquiry from him, only the reorders of some
hydraulic cartridge valves. At the beginning of August, Davis asked about the
production time of 200 hydraulic pressure control valves, and only then did we
know that why he did not place orders for new valves for a long time. In the
second half of last year, he found a hydraulic valve manufacturer whose price
was more than 20% cheaper than that of AAK, so he moved the business to that
manufacturer. But now troubles come out one after another, the boss is very
dissatisfied, and he is under great pressure.
 
The most troublesome thing is that a three grip electro-hydraulic puller is
weak in grasping due to the leakage of the hydraulic pressure control valve.
However, the manufacturer of the original hydraulic pressure control valves
prevaricated, and the high frequency of use of the equipment caused the wear of
the valve body, and even refused to replace the goods. Davis regretted his
decision. He caused big trouble for the first time because of the 20% price
difference, and had to get back to AAK. In the past 4 years of cooperation with
AAK, there was no complaint. In order to help Davis get out of the predicament
as soon as possible, we adjusted the production arrangement of the workshop. 2
weeks later, 200 hydraulic pressure control valves were delivered. Davis also
sent me the drawings of other valves produced by that manufacturer with lower
price, and asked me to be prepared for production.
 
AAK hydraulic pressure control valve is wear-resistant and leak free, ahead of
most hydraulic valve manufacturers in 3 aspects, which are also the important
points to ensure the performance of 2 million times.
 
1. In terms of materials, AAK adopts German 20CrNi2MoV high carburized bearing
steel. Through secondary quenching + cryogenic treatment + low temperature
tempering process, its microhardness is 237 ~ 247HV, and its wear resistance is
3 times higher than that of similar steels. Most hydraulic valve manufacturers
may know how to choose materials, but they may not do a good heat treatment.
 
2. On the equipment, AAK uses the Japanese NP520X-F full-automatic grinder to
finish the valve spool. The surface of the processed valve spool is like a
mirror with an accuracy of 0.8μm, the flexibility of the valve spool is
improved by at least 2 times. Most hydraulic pressure control valve
manufacturers can not process the same quality valve spool as AAK.
 
3. In terms of detection, AAK uses the German Diatest small pore diameter
measuring instrument to check each valve hole of the hydraulic pressure control
valve, and the measurement accuracy range can reach 0.1μm at least, ensure the
concentricity of the valve hole is consistent, and most hydraulic valve
manufacturers use random sampling inspection.
 
Davis privately told that the boss was very happy with AAK's help regardless of
past grievances, and was also satisfied with Davis's ability to deal with
unexpected problems.
 
AAK hydraulic pressure control valve has a performance of 2 million times
of long service life. You can also have a small test!

https://www.aakindustry.com/info-deta , il/hydraulic-pressure-control-valves-
aak340

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