Method for stress testing of irregular springs

spring are a general term for hook type, straight hook type, combination type, and multi coil type spring. Irregular spring can be made directly with a spring machine. The so-called irregular spring means that its shape is irregular, nor is it singular in shape.

Regarding special shaped spring with the same structure, under the same load effect, there is a significant difference in the results obtained by the two methods for the stress of Spring Spring with fewer useful coils or larger helix angles.

This is because as the helix angle increases and the load is biased, the outer diameter or lateral deformation of the Irregular Springs is greater, resulting in greater stress. The torsion bar is made of high-purity 45 steel, which is quenched at high frequencies to obtain high hardness and greater residual compression stress, thereby improving fatigue life and anti loosening ability. With the widespread use of electronic products, irregular spring are basically formed by stamping and active bending processing. Now, the primary bonding technology for composite materials is to develop multi-stage shot peening and liquid nitriding processes for valve spring to improve surface residual compressive stress and advance fatigue life.