spring steel wire production, you should consider a lot. As a manufacture specialized in making spring steel wire, we list some consider points of steel wire's heat treatment.
Before the heat treatment of spring steel wire, there are two points you should pay attention to: first, the rolling surface of the spring steel wire usually is the surface of the spring, so you should try to avoid the racks, folds, spot scars, hair patterns, bubble, and so on. Second, the surface decarburization of spring steel wire will reduces the spring's fatigue strength, so you should strictly tested the depth ofdecarburization according to the provision.
Since we should notice before the treatment of spring steel wire, it also should be noted after the heat treatment. First, observe the spring's surface with naked eye ora magnifying glass, to ensure there are no cracks, no corrosionpits, and no serious quenching distortion. Second, ensure the hardness and uniformity of spring steel wire are conforming to the provisions. During the mass production, you should check the hardness of spring steel wire by sample survey. Third, the metallographic structure should be troostite or the combination structure of troostite and sorbite. Forth, after the assembly of spring, the spring should be tested about the permanent deformation underloadand staticdeflection.
The spring steel wire after treatment can achieve the good performance. The inappropriate heat treatment will influence the performance of spring, so pay more attention.
The spring steel wire after treatment can achieve the good performance. The inappropriate heat treatment will influence the performance of spring, so pay more attention.