AAK Hydraulic Pressure Control Valve Solved Cavitation Fault, Erich admired

AAK hydraulic pressure control valve is made of 100Cr2 bearing steel, with high
hardness and high wear resistance. It also adopts distinctive heat treatment
process, to ensure that the hydraulic valve has no cavitation. It takes only 2
weeks to solve the customer complaint and helps Erich out of the dilemma.

Erich has been doing well in Linde company for several years. Recently, he was
under great pressure due to a complaint. A hydraulic pump produced by Linde
company went on strike after 8 months of use. The customer complained directly
to the boss, who asked the after-sales department to find out the cause and
solve it immediately. After inspection, the engineer found that mechanical
damage had occurred on the metal surface of the pump, and the surface of the
damage showed sponge like small holes, which should be caused by the hydraulic
impact formed by the internal hydraulic system. At the same time, it was found
that the hydraulic pressure control valve used in the system was the most
serious, and no problems were found in other components. It was basically
determined that the poor cavitation resistance of the hydraulic pressure
control valve led to the strike. The boss asked Erich, who was responsible for
the purchase of hydraulic pressure control valves, to re purchase hydraulic
pressure control valves for these inoperable pumps within 20 days, to make sure
no cavitation.
Erich contacted the original supplier of hydraulic pressure control valve and
informed him of the whole situation. The original supplier mentioned that
before production, Erich didn't inform the current working condition. To meet
this working condition, materials must be customized, which would not be
allowed by the time, because it would take at least 40 days. Erich also
contacted a number of hydraulic valve manufacturers and got the replies that
they either could not meet the quality requirements or the time would not be
enough. This is troublesome. It's too late for the 20 days of time frame given
by the boss.

Erich thought of AAK hydraulic valve, because he had a hydraulic pressure
control valve sampled here last year, but didn't have any further contact due
to AAK quotation was high. Erich asked by email whether AAK can solve the
cavitation of hydraulic pressure control valve. According to the cavitation
picture of the hydraulic pressure control valve provided by Erich and verifying
the hydraulic working conditions, we replied that the materials used for this
hydraulic pressure control valve need to be treated. However, AAK has
inventory, because an American customer purchased similar hydraulic pressure
control valves last month, we can send 4 samples of hydraulic pressure control
valves within 14 days.

After Erich received the samples of hydraulic pressure control valve, their
engineers installed it for debugging and it can work normally. Erich asked us
to prepare materials quickly. His boss asked to replace all the hydraulic
pressure control valves in this batch to avoid further complaints from
customers. At the same time, he asked us to ensure that the mass production
should be stable and there should be no cavitation.

The most important factor to avoid cavitation is the material selection of
steel and the heat treatment of steel. According to the customer hydraulic
working conditions, A AK selects 100Cr2 bearing steel and adopts
carbonitriding heat treatment process. It is carburized at high temperature of
820-830 ℃ for 13 hours, then oil quenched, - 60 ℃ to - 70 ℃ cryogenic
treatment and 150 ℃ to 160 ℃ tempering treatment. The whole molecular
structure of the steel is uniform and the hardness can reach HRC68. After such
heat treatment, the comprehensive properties are very stable, uniform hardness
and good wear resistance. Wear resistance and high contact fatigue strength
ensure no cavitation.

AAK hydraulic pressure control valve, no cavitation, has the stability admired
by customers, you can also give it a try!

https://www.aakindustry.com/info-detai , l/hydraulic-pressure-control-valves-
aak134

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