2005•Turbine TechnologyRequires access

The Analysis on Breaking Accident of Blade of Steam Turbine

Meiying Wang

Abstract

This paper mainly analyzes the crack and fracture of the blade in the turbine,the materials of the blade is 2Cr13 steel,the composition , structure and properties of the blade accord with the standards. The analysis of the macro and micro fracture indicates that it produces fracture because it has the machining nick, the indentation of the bump and the shape edges of the hole, theses process defect reduce the using life of the blade. As a result of the effect of the alternate change of the stress, the blade was fractured because of fatigue.

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Available abstract

Key concepts: Blade (archaeology), Fracture (geology), Structural engineering, Engineering, Turbine blade, Machining, Indentation, Steam turbine