Precision piston rod is currently used in many industries to a product, it is because the piston rod is widely used, so people for the piston rod production material selection is also more and more attention to the choice of different production materials, then its production of precision piston rod performance and characteristics are also different.
45# steel is a carbon structural steel, it is good cold and hot processing performance, mechanical properties, high strength. 45# steel in the quenching without tempering before, hardness greater than HRC55 for qualified, and after heat treatment, and then quenching can reach HRC42-46, so that the precision piston rod has good mechanical properties and hardness.
40Cr is a medium carbon tempered steel, after appropriate heat treatment, you can get good toughness, plasticity. And it can have good comprehensive mechanical properties after tempering treatment, good low temperature impact toughness. In addition, this steel is suitable for cyanidation and high frequency quenching treatment in addition to the tempering treatment.
GCr15 steel is a kind of alloy content less high carbon chromium bearing steel, with relatively high hardenability, after heat treatment can be obtained after high and uniform hardness. And when it is quenched plus low temperature tempering treatment, it can have a high hardness, uniform organisation and relatively high contact fatigue properties with temper brittleness.
Sus304 has a relatively high corrosion resistance, can be at low temperature, room temperature and high temperature are high plasticity and toughness and better cold forming and weldability. Because its austenite has no phase change when heated, precision piston rods cannot be strengthened by heat treatment and can only be heat treated to strengthen the steel’s corrosion resistance.
The chrome plating thickness of the precision piston rod process should be determined in conjunction with the actual. In the piston rod chrome plating process, the thickness of the chrome layer has a close relationship with the surface hardness of the rod. When chrome plating is carried out, this can be determined according to the customer’s requirements in order to achieve a good quality performance.
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Post time: Feb-20-2023