Different types of spring steel wire have different production methods, but they also have the common characteristics, that are certain strength, high toughness and good performance of coiled spring.
Spring steel wire commonly used in a variety of fabrication methods are as follows:
Patented spring steel wire: wire rod size or drawing in the middle of the specification lead bath quenching, surface treatment and then drawing.
Galvanized spring steel wire: normally finished size of hot dip or electroplating also used pickling hot dip rod to the required size after the drawing.
Patented spring steel wire: wire rod size or drawing in the middle of the specification lead bath quenching, surface treatment and then drawing.
Galvanized spring steel wire: normally finished size of hot dip or electroplating also used pickling hot dip rod to the required size after the drawing.
Oil hardened spring steel wire: carbon steel or alloy steel can be used as needed, after surface treatment and cold drawing to finished size, quenching and tempering treatment. This process mostly used in the automotive suspension springs and valve spring wire.
Surface treatment: general use of acid phosphate, iron oxide skin removal, the formation of phosphate coating; also a few mechanical approaches. The common goal is to meet the requirements of cold drawn wire drawing process and obtain smooth surface.
Drawing: Drawing process has a great impact on product performance; the purpose is to ensure product toughness.
Heat treatment: the spring steel wire's performance after this process can be improved.
Apart from these spring steel wire production methods, there are other methods. And all of them are beneficial to the end.