Manufacturing process of cold formed spring:
When using materials that do not need to be quenched and tempered to make a spring after forming, the process is
Spiral compression spring: coiling, stress annealing, grinding of both ends, (shot blasting), (correction), (stress annealing), standing or strong pressure treatment, inspection, surface anti-corrosion treatment, packaging. Dongguan Spring
Spiral torsion spring: coiling, stress annealing, torsion arm making, tail cutting, stress annealing, standing treatment, inspection, surface anti-corrosion treatment, packaging.
Spiral tension spring: coiling, stress annealing, hook and loop production, (tail trimming), stress annealing, standing treatment, inspection, surface anti-corrosion treatment, packaging.
The manufacturing process of the spiral tension and torsion springs mentioned above is to process the hook loops or torsion arms at both ends after winding on the ordinary coil spring. In recent years, many domestic and foreign manufacturers have produced and used computer forming machines. Or a special forming machine, the shape of the spring body and tail can be completed on the forming machine at one time, saving the process of processing shackles or torsion arms.
When using materials that need to be quenched and tempered after forming, the main difference from the above process is that they need to be quenched and tempered after forming, and sometimes the spring end processing needs to be normalized.
The process with brackets is a non-fixed process, and whether it is performed depends on the performance requirements of the spring.