Shot blasting process of clutch spring: stress shot blasting process. Stress shot blasting is also a relatively classic shot blasting process, just because it is difficult to apply to mass production, but in recent years due to the rapid development of shot blasting equipment, it has been greatly improved in high-volume automotive suspension spring mass production. development of. In particular, the combination of stress-enhanced shot blasting and other shot blasting processes has a good strengthening effect. The pre-stress of shot blasting is generally set at (700-800) MPa. After stress-blasting, the peak value of residual stress can reach (1200-1500) MPa, thus obtaining high fatigue resistance.

The combination of stress-enhanced shot blasting g and other shot blasting processes has a good strengthening effect.

Cautions in Clutch Spring Processing

1. Springs without supporting rings and springs with too thin steel wire diameters should not weld springs, but the end cables should not be obviously loose, and should be deburred. For multi-strand springs with welded head, the length of the welded part shall be less than 3 times the cable diameter (up to 10 mm). The heating length should be less than one circle, the welding should be polished smoothly after welding, and the welding parts should be annealed locally at low temperature during gas welding.

2. The support ring can be combined by cold and hot methods according to the product requirements. The spring is not allowed to be heated to sparking or whitening by hot coalescing, and the temperature of silicon manganese steel should not be higher than 850 C. The supporting ring shall be in effective contact with the effective ring, and the clearance shall not exceed 10% of the nominal clearance between the rings.