Heat treatment method of piston rod material

Heat treatment method of hollow piston rod material

1. No. 45 steel:
Heat treatment process: preliminary heat treatment - low temperature spheroidizing annealing - quenching - critical temperature quenching - high frequency quenching
No. 45 steel is a kind of medium carbon steel. The heat treatment of 45 steel piston rod is mainly to change the internal structure and performance of steel through heating, heat preservation and cooling of steel in solid state. After quenching, the surface hardness can reach 45-52HRC, and comprehensive mechanical properties such as high strength and toughness can be obtained.
2. 40Cr:
Heat treatment process: preparatory heat treatment - eliminate internal stress of workpiece - quenching and tempering operation - workpiece quality inspection
40Cr steel is a quenched and tempered steel with low hardenability, which has the characteristics of high strength, good plasticity, strong toughness and good mechanical properties. Moreover, it can improve the plasticity and toughness of steel through proper tempering, so that the strength, hardness, toughness and plasticity can be properly matched to meet the performance requirements of the piston rod.
3. 2Cr13:
Heat treatment process: preliminary heat treatment process - quenching and tempering treatment - stress relief treatment - high frequency quenching, low temperature tempering
2Cr13 steel has good machinability, so it can have excellent corrosion resistance and good toughness after heat treatment. In order to maximize the 2Cr13, it is necessary to correctly determine the heating temperature, time, holding time, and cooling method, so that the correct heat treatment process can be used to make the surface of the heat-treated 2Cr13 piston rod not only have high hardness and high wear resistance , High pitting resistance, high fatigue strength, high strength and toughness, so as to meet the quality requirements of the piston rod.

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