The service life of AAK hydraulic directional control valve with high pressure resistance of 380bar

At the beginning of the year, Torsten was in urgent need of 200 hydraulic directional control valves and emphasized delivery within 30 days. It turned out that their hydraulic pipe jacking machine was complained by customers half a year after sales.

AAK hydraulic directional control valve, pressure resistance 380bar, no wear for more than 1 year. Our valve body is made of Japanese SCM415 chromium molybdenum steel alloy steel, whose mechanical properties are more than 70% stronger than similar materials. Then carburizing and heat treatment shall be carried out. The hardness of valve body shall be more than HRC65, and the wear resistance shall be more than 3 times of the general 45 steel. The reason why most hydraulic valve manufacturers dare not use SCM415 chromium molybdenum steel alloy steel is not only the difficulty in processing, but also the inability to control carburization and heat treatment.

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