Research on the cause and treatment of stamping cracking of an automobile hood outer plate
To solve the stamping cracking problem of an automobile hood outer plate,the mechanical properties and the compositional structure of the material were tested by the electronic tensile testing machine,stereomicroscope,metallurgical microscope,scanning electron microscope and spectral analyzer.AUTOFORM stamping simulation software was used to analyze the influence of die radius,surface friction coefficient and other factors on the forming effect of the parts.The results show that the material performance is excellent,and the main reasons for cracking are the small radius of the upper and lower prongs of the mold and the high friction coefficient of the mold surface.By grinding and smoothing the upper and lower corners of the mold,chrome-plating the surface of the mold and other measures,the material flow resistance was reduced,and the material deformation became more uniform,thereby solving the stamping cracking problem of the automobile hood outer plate.
万方数据
维普
