At the time of spring processing production, is always prone to all kinds of small problems, and how to deal with?
1 if there is no protection of gas or air heating furnace quenching salt bath DNA is not complete, it may produce decarburization, solution: air heating furnace quenching shall protect gas or the organic solution protection: when the salt bath furnace heating, salt bath should be solid, impurity BAO quality score is less than 0.2%; Strengthening surface quality inspection for raw materials.
2, if insufficient hardness after quenching, can reduce the service life of the spring, the residual deformation. Solution: use good hardenability steel, improve the cooling capacity of quenching medium, spring into the quenching medium temperature shall be above AR3, appropriate increase after quenching heating temperature, strengthening the quenching microstructure test.
3,

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