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Contact: VINSON ZHANG
Company: AAK INDUSTRY CO., LTD
Bona Business Building, No. 456 Taikang Middle Road
Ningbo 315100
China
Phone: 057483008115
Fax: 057488138441
E-Mail: Send Inquiry
Date/Time:  4/15/22 7:07 GMT
 

AAK Hydraulic pressure control valves durability for 450bar over 1 year

Erik compared more than 20 hydraulic pilot pressure control valve factories. No
manufacturer can do the hydraulic pilot operated pressure control valves which
can be used under high pressure above 450bar for more than one year. AAK
hydraulic pilot operated pressure control valve passes the test at one time,
and there is no abnormality after one year of use.

Erik is from a German hydraulic equipment manufacturer. In the first half of
last year, the company needed to purchase a special hydraulic pilot operated
pressure control valve with a working pressure of more than 450 bar, a service
life of more than one year and a durability of more than 2 million times. The
boss realized that it was some difficult to purchase the hydraulic pilot
operated pressure control valve this time, and asked Erik and his colleague to
purchase at the same time. Whoever successfully purchased the hydraulic pilot
operated pressure control valve first will be promoted and raised. Erik is full
of energy and keeps looking for hydraulic pilot operated pressure control valve
factories online and offline. He contacted more than 20 new suppliers,
including AAK hydraulic valve.

Most of the hydraulic pilot operated pressure control valve manufacturers
replied that they need to be customized from the beginning of materials, and it
takes 25 days to sample this special hydraulic pilot operated pressure control
valve. Erik chose two factories to test the samples. A month later, Erik
received the samples and asked the engineer to test them. The results failed,
but the hydraulic pilot operated pressure control valve obtained by his
colleague passed the first test, which made Erik very depressed. Fortunately,
this is just in the test stage, the final effect depends on the test results of
the hydraulic pilot operated pressure control valve one year later. Erik
contacted AAK for the second time. He clearly informed that the samples of
hydraulic pilot operated pressure control valves he selected in the first round
failed. For the first time, he did not choose AAK because AAK needed 35 days.
This time, he only asked AAK to make samples. Whether he can win or not, he can
only count on AAK. Because the material selection and internal test of
hydraulic pilot operated pressure control valves need time, Erik also
understands the difficulties of making the samples. After 35 days, AAK sent 6
samples of hydraulic pilot operated pressure control valves.

Last week, almost a year after the hydraulic pilot operated pressure control
valve samples were sent, Erik sent an email to inform that AAK hydraulic pilot
operated pressure control valve was the only sample that passed 2 million
tests, and there was no abnormality after one year of use. Although his
colleague's sample passed the early test, it could not withstand the high
pressure above 450 bar for enough time, it leaked in less than a year. A few
days ago, the boss praised Erik's purchasing ability at the company conference,
and his dream of promotion and salary increase has also been realized.

Erik was surprised that why AAK hydraulic pilot operated pressure control valve
was normal after 1 year of use, while other manufacturers surrendered early?
The core of this hydraulic pilot operated pressure control valve is material
and heat treatment. AAK adopts 20CrNi2MoV high carburizing bearing steel
imported from Germany, combined with carburizing pretreatment process, through
secondary quenching + cryogenic treatment + low temperature tempering process,
which is cooled to 650 ~ 700 ℃ and discharged after cooling to 450 ~ 500 ℃.
The microhardness is 237 ~ 247 HV, and its wear resistance and contact fatigue
performance are increased by more than 3 times. After heat treatment, the
thermal stability and compressive strength of the material have long been far
ahead. Most manufacturers may choose right materials, but they may not be able
to do a good heat treatment.

AAK hydraulic pilot operated pressure control valve, select and use good
materials. You are welcome to have a small try!

https://www.aakindustry.com/info-detai , l/hydraulic-pressure-control-valves-
aak171
AAK Hydraulic pressure control valves durability for 450bar over 1 year
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