Experimental Research on Residual Stress in the Process of Cemented Carbide Coating Micro Groove Tool Cutting 40CrMnMo

摘要

The cemented carbide coating micro groove turning tool and original turning tool are arranged to cut the same oil country tubular goods (OCTG) 40CrMnMo. By the combination of cutting experiment theoretical analysis, this paper focuses on the radial distribution of residual stress of machined surfaces of the new cemented carbide coating micro groove turning tool through a comparative analysis of the radial distribution of residual stress of machined surfaces from the two turning tool above. Research results show that the micro groove can increase the thickness and the maximum value of residual compressive stress, and reduce the thickness of residual tensile stress and the value of residual tensile stress of surface material of workpiece.