AAK Hydraulic Directional Valve Service Life exceeds most Manufacturers

The hydraulic directional valves produced by AAK adopts its own proprietary
quenching and tempering heat treatment process, which can greatly improve the
strength of the hydraulic directional valve, avoid deformation and wear of the
hydraulic directional valve in the long-term use process, and significantly
increase the service life. Perhaps there is no second comparable manufacturer
in Ningbo like this. At most, 10% of the domestic hydraulic valve peers can
compete.

In order to win orders, 50% of the hydraulic valve manufacturers do not do any
heat treatment to the materials for the hydraulic parts. Although some
hydraulic valve manufacturers insist on heat treatment, they can only be
outsourced processing due to without equipment. There are also 20% of hydraulic
valve manufacturers, who do not have a fixed outsourced processing place, so it
is impossible to ensure the heat treatment quality, not to mention the
stability. Due to these common problems in the hydraulic valve industry, the
hydraulic valve will show many problems after being used for a period of time,
such as product deformation and wear. Once the hydraulic valve is deformed, it
will easily to be blocked and the service life of the hydraulic valve will be
greatly shorten.

5 months ago, Mike, a hydraulic valve customer in the United States, came to
me. He had been confused, since 2019, there have been continuous customer
complaints about the hydraulic directional valve he purchased. All the
complaints are that after the hydraulic directional valve has been used for a
period of time, some hydraulic directional valves are deformed and some
hydraulic directional valves are worn quickly.

Obviously, there is a problem with the heat treatment of the materials used in
the hydraulic directional valve. Since 2019, due to the environmental
protection policy, the domestic heat treatment plants have been vigorously
rectified, and there are much fewer processing places. 50% of the hydraulic
valve manufacturers do not have a place to do heat treatment to the raw
materials. Even if heat treatment is done, 20% of the hydraulic valve
manufacturers have to change the processing places for each external
processing. I sent him several samples of AAK hydraulic directional valve and
told him that the material hardness of our hydraulic directional valve has not
changed, which always can reach about 50-55HRC or higher, and there is no
problem with the special requirement of 65HRC. He didn't know that the service
life of hydraulic valve is our hard index.

3 months ago, Mike issued a test order for the hydraulic directional valve.
Each different part of the hydraulic directional valve is marked with different
hardness requirements. He also wants to know how AAK ensures the service life
of the hydraulic directional valve.

To get a long service life of hydraulic directional valve, heat treatment is
the first and most critical step. In order to do a good job in heat treatment,
AAK has held a heat treatment factory for 10 years. The quenching and tempering
heat treatment of hydraulic valve materials is sensitive to temperature. If the
temperature is too low, hardness is not enough and easy to deform. On the
contrary, it will lead to cracking. Only our proprietary heat treatment process
can accurately grasp the appropriate temperature under the operation of a
master with more than 6 years of experience. AAK can also select the
corresponding heat treatment process and determine the temperature range
according to the different working conditions of the hydraulic valve to ensure
the service life of the hydraulic valve.

AAK hydraulic directional valve has a service life of more than 90% of its
peers, you can also have a small try.

https://www.aakindustry.com/

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