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hotline2:0635-2412979

hotline3:0635-2412978

address:tang yuan industrial park,linqing city Shandong

Process

zhongde bearing heat treatment quality

1, roller hearth furnace heat treatment production line on the operating mode with the method of the lifting platform material, the normal production process to avoid the collision between artifacts and artifact, knock against injury put an end to the products.

2, the production line has good sealing. With methanol and high purity nitrogen as the protection atmosphere, with propane gas as the enriched gas, make the artifacts do not appear after quenching oxidation and decarburization. After quenching workpiece surface is light blue, the color uniform luster.

3, by adjusting the process parameters, work piece after quenching hardness can be stable in 58 to 63 HRC range and single workpiece hardness difference 1 HRC or less, the same batch of workpiece hardness difference of 1.5 or less HRC.

4, after martensite interrupted quenching, workpiece internal have a certain amount of residual 

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