Why is spring break?

Why is spring break? Spring factory is introduced in general spring is not easy to cause fracture, but when meet some special conditions, the spring will appear rupture phenomenon. Spring break mode can be divided into; Fatigue fracture, environment pollution, Hydrogen embrittlement and stress corrosion cracking) And overload fracture. Spring fatigue fracture reason: design belongs to wrong by mistake, raw material, manufacturing and bad environmental elements such as hard work. Fatigue crack usually begins in the spring of high ground stress area, such as 'spring shackle, inner surface compression spring, compression spring ( On both sides of production and processing of compression spring) On either side of the face. Erosion fatigue: under the etching standard, the raw material of the spring fatigue limit decreased significantly, the exhaustion of spring designed also greatly shorten the service life. Friction fatigue: because of the friction damage caused by tiny crack of grain and damaged condition called friction fatigue. Overload fracture: spring another load of lotus beyond spring risk limits all bear the cross section of ground stress, the spring will produce fracture. : (overload fracture a) Strong crack caused by the bending fracture; ( b) Impact load caused by the fault; ( c) Axial load caused by the rupture.
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