The influence of cutting parameters on residual stress distribution during turning of 20Cr2Ni4 steel

摘要

A series of orthogonal experiments have been carried out to study the effect of different rake angles, cutting depths and spindle speeds on residual stress distribution during turning of 20Cr2Ni4 steel. Four characteristic values are selected from the typical residual stress distribution profile: surface residual stress, the depth of tensile stress, the maximum residual compressive stress and the depth of residual stress. The residual stress by turning were measured by X-ray diffraction method. In order to get the distribution of residual stress along depth direction, the specimens need to be etched layer by layer. From this investigation, it could be suggested that during turning of 20Cr2Ni4 steel, using the cutting parameters that low rake angle (5 degrees), large cutting depth (0.3 mm) and medium spindle speed (200 r/min) will result in low residual stress of parts.