Why spring break

Spring fatigue fracture reason: belong to design is not correct, material defect, improper manufacture and poor working conditions and other factors. Fatigue crack usually spring fracture have a way can be divided into; Fatigue fracture, environmental damage, Hydrogen embrittlement and stress corrosion cracking) And overload fracture.





fatigue crack usually originated in the spring of the high stress area, such as tensile spring shackle, the inner surface of the compression spring, compression spring ( On both sides of production and processing of compression spring) The two end face. Corrosion fatigue: under the condition of corrosion, fatigue strength significantly reduce of spring material, the fatigue life of spring is significantly reduced. Friction fatigue: because of the friction damage caused by tiny crack and damage phenomenon called friction fatigue. Overload fracture: spring loads beyond spring all bear the ultimate stress of dangerous section, the spring will produce fracture. : (overload fracture a) Strong bending crack caused by fracture; ( b) Impact load caused by the fault; ( c) Eccentric load caused by the rupture.
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