What should consider about the heat treating spring steel wire?

While in the spring steel wire production, you should look at a lot. As a manufacture devoted to making spring steel wire, we list some consider points of steel wire'¤s heat treatment.
Prior to heat treatment of spring steel wire, there are 2 points you should pay attention to: first, the rolling top of the spring steel wire usually may be the surface of the spring, so you needs to avoid the racks, folds, spot scars, hair patterns, bubble, and so forth. Second, the surface decarburization of spring steel wire will cuts down on the spring's fatigue strength, so you should strictly tested the depth of decarburization in accordance with the provision.

Since we should notice prior to treatment of spring steel wire, you'll find it should be noted after the heat treatment. First, view the spring's surface with naked eye or even a magnifying glass, to ensure there are no cracks, no corrosion pits, without serious quenching distortion. Second, guarantee the hardness and uniformity of spring steel wire are conforming on the provisions. During the mass production, you can even examine the hardness of spring steel wire by sample survey. Third, the metallographic structure needs to be troostite or the combination structure of troostite and sorbite. Forth, following the assembly of spring, the spring really should be tested about the permanent deformation under load and static deflection.

The spring steel wire after treatment can perform the good performance. The inappropriate heat treatment will influence the performance of spring, so pay more attention.