What is the manufacturing process of torsion spring?

Generally speaking, the manufacturing process of torsion spring mainly includes:

1, scroll. Rolling is divided into cold rolling and hot rolling. Manager Li, who started the spring machine, warmly reminded that whether it is cold coil or hot coil, the pitch of the spring should be adjusted according to the specific situation after winding.

2, hook making or end ring finishing.

3. Heat treatment.

4, process test and strong pressure treatment.