Spiral tension spring: coiling, stress relief annealing, hook and loop production, (tail trimming), stress relief annealing, standing treatment, inspection, surface anti-corrosion treatment, packaging.

Spiral torsion spring: coiling, stress relief annealing, torsion arm making, tail trimming, stress relief annealing, standing treatment, inspection, surface anti-corrosion treatment, packaging.

The manufacturing process of the spiral tension and torsion springs described above is to process the hook loops or torsion arms at both ends after the ordinary coil spring is automatically wound. In recent years, many domestic and foreign manufacturers have produced and used computerized forming machines or special forming machines. The shape of the spring body and tail can be completed on the forming machine at one time, eliminating the need for processing hooks 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. 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.

2, What is the processing process of the spring thimble?