What causes the inclined coil spring to break abnormally?

Spring is one of the important basic parts in mechanical products. There are many types, divided into: coil spring, plate spring (plate spring), disc spring, ring spring, flat (cut cone) scroll spring, etc.; According to the characteristics of the bearing is divided into: compression, tensile, torsion spring, etc. The stress of the spring is: bending stress, torsional stress, tensile and compressive stress and compound stress. The failure modes of spring mainly include: fracture, deformation, relaxation and wear. The main ones are fracture and deformation (relaxation).

1. Brittle fracture: Most spring fractures are brittle fractures. Plastic breakage is only possible when the operating temperature is high. In engineering, fatigue fracture, stress corrosion fracture and hydrogen embrittlement fracture are called brittle fracture

2. Fatigue fracture: The fracture of a spring under periodic load.

3. Stress corrosion fracture: Spring fracture caused by tensile stress and corrosive media.

4. Corrosion fatigue fracture: Spring fracture under the combined action of periodic load and corrosive media.

5. Hydrogen embrittlement, cadmium embrittlement, black embrittlement: brittle fracture caused by excessive impurity content in spring material.

6. Wear: Wear is divided into: wear, fatigue and corrosion wear fracture.