Different types of spring steel wire have different production methods, but they all share the common characteristics of requiring certain strength, high toughness, and good coiling performance.
Common manufacturing processes for various spring steel wires are as follows:
(Steel) Wire rod -- Surface treatment -- Wire drawing (This method can be used for mattress steel wire)
Lead-quenched spring steel wire: Lead bath quenching is performed on wire rods of the required size or intermediate cold-drawn specifications, followed by surface treatment and wire drawing.
Galvanized spring steel wire: Hot-dip galvanizing or electroplating is usually performed on the finished product size. Some are also produced by pickling and hot-dip galvanizing wire rods followed by cold drawing to the specified size.
Oil-quenched spring steel wire: Carbon steel or alloy steel can be used as needed. After surface treatment and cold drawing to the finished size, quenching and tempering are performed. This process is commonly used for automotive suspension springs and valve springs, but it can also be used for ordinary springs.
