There are three common types of machine parts

1. Excessive deformation failure: failure caused by excessive deformation of parts beyond the allowable range. It mainly includes excessive elastic deformation, plastic deformation and creep at high temperature and other failure forms.

2, fracture failure: due to the parts bearing too much or fatigue damage and other reasons, resulting in the separation of two or more than two disconnected parts of the phenomenon.

3, surface damage failure: parts work due to the relative friction of the surface or the corrosion of environmental media caused by damage or size changes in the parts of the failure. It mainly includes surface wear failure, corrosion failure, surface fatigue failure and other forms.