In 2015 a leading domestic cleaning machine company approached us through multiple channels to ask for help. The plunger spring and relief valve spring on the plunger pump, the core component of their cleaning machine, had been unable to meet the design life requirements, and the situation lasted for about 10 years. During this period,

In 1998, our company received technical support from a military enterprise. The reentry spring of one of their new rifles had not been able to reach the design life, and several well-known spring companies were approached to make samples, all of which would have defects such as spring deformation and fracture, and the results were

In general, the forming process is divided into cold winding and hot winding, in common parlance is a direct winding with cold steel wire, a wire is heated to red soft and then wound, and then cooled. Cold winding is generally adapted to small wires less than 16 mm. Hot winding is a large diameter