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Failure Analysis on Bearing Thrust Plate of Large HDPE Extruder
Pages: 223-225
Year: Issue:  4
Journal: Hot Working Technology

Keyword:  bearing thrust plateindentationscontact fatigue failuremultiple-origin fatigue;
Abstract: By macro-micro fracture morphology observation, metallographic analysis, chemical composition analysis, compression and hardness test, the failure causes of bearing thrust plate of large HDPE extruder were systemically investigated. The results show that the indentations which resulted by extrusion of bearing thrust plate and bearing ring can greatly affect the burgeoning of surface crackle and early fatigue fracture. The bearing thrust plate is operated by contact fatigue stress again and again, the cracks appear in many places on the surface. The multiple-origin fatigue appears gradually, and then expands to inner up to fracture. The solution methods were put forward.
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