AAK Hydraulic Cartridge Relief Valve Benchmarking SUN Hydraulics

Cleveland is from a hydraulic equipment company in Mexico. He has purchased
hydraulic valves in Ningbo for 3 years. We have communications for two times.
He is confident, but the hydraulic cartridge relief valves he purchased last
time stumped him. At the end of last year, their customer customized a
hydraulic paper cutter, which requires the use of a hydraulic cartridge relief
valve. The engineer asked Cleveland to purchase SUN hydraulic cartridge relief
valve standard parts, and the equipment commissioning was smooth. The customer
was satisfied and placed the first batch of orders. Cleveland placed the order
with a hydraulic cartridge valve manufacturer in Ningbo. 6 months after the
equipment was sold, the customer complained that the stability of the equipment
was not as good as the prototype. After checking, it was found that the
hydraulic cartridge relief valve was leaking, and the standard deviation of
valve hole accuracy was only 70% of SUN's. Cleveland contacted SUN, but SUN did
not have enough inventory and needed a long lead time for production. The boss
was not satisfied and requested to purchase the hydraulic cartridge relief
valves that benchmarking SUN. Cleveland was worried.

Cleveland contacted me and told me the dilemma he encountered in purchasing
hydraulic cartridge relief valves. He knew that SUN was a loyal customer of AAK
Hydraulic Valves for 3 consecutive years and needed my help. My engineer told
me that as long as the heat treatment of steel is in place, the standard
deviation of AAK processing accuracy can completely benchmark SUN, so that I
have a good idea. No comparison, no harm. I deliberately told Cleveland that
AAK was only 80% confident. In order not to delay after-sales service, it was
recommended for him to find another two hydraulic relief valve manufacturers
that he most recognized, that is, three manufacturers made samples at the same
time. If AAK sample fails, the sample cost will be returned.

2 months later, Cleveland sent an email and advised that the standard deviation
of the valve hole accuracy of the 3 hydraulic relief valve manufacturers was
out. The test data showed that only the standard deviation of AAK was
benchmarked with SUN hydraulic cartridge relief valves. I replied that the
essence of manufacturing quality is standard deviation. This is why SUN has
selected AAK hydraulic valves for 3 consecutive years, and they focus on the
standard deviation. Cleveland's trust in AAK was thus opened. His boss was very
satisfied with the price of AAK hydraulic cartridge relief valve, which was 30%
cheaper than SUN.

AAK hydraulic cartridge relief valve, the standard deviation of valve hole
accuracy, benchmarked with SUN, is the result of comparison and also a fact.

1. In terms of material, the valve spool of this hydraulic cartridge relief
valve is made of German 20CrNi2MoV bearing steel, and the heat treatment
process of "secondary quenching+cryogenic treatment+low temperature tempering"
is adopted. The micro hardness is 237-247 HV, and the wear resistance is more
than 3 times that of similar steel.

2. On the equipment, the valve hole of hydraulic cartridge relief valve is
finished with Swiss high-precision honing machine, equipped with diamond
oilstone, which is completely ground without trace. The valve hole accuracy can
be within 2μm, the surface roughness is Ra0.2-0.3.

3. In terms of detection, German Diatest small micropore diameter measuring
instrument is used, the minimum measurement accuracy can reach 0.1μm, and the
valves are 100% full inspected.

AAK hydraulic cartridge relief valve, benchmarking SUN, and saving cost for
30%, you can also try a small order!

https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-relief-valves-
aak385

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