表面技术2017，Vol.46Issue(1)：234-240,7.DOI:10.16490/j.cnki.issn.1001-3660.2017.01.038
58SiMn高强度钢车削表面完整性的试验研究
Experimental Investigation of Surface Integrity in Turning of High Strength Steel 58SiMn
摘要
Abstract
The work aims to study the effects of cutting parameters on surface integrity evaluation index of 58SiMn high strength steel. Based on single factor- and orthogonal experimental designs, coated carbide-tipped tools were utilized to machine 58SiMn high strength steel. By collecting relevant data, the effects of cutting depth, feed rate and cutting speed variation on sur-face roughness, residual stress, microhardness and surface microstructure were discussed. Feed rate had most significant effect on surface roughness, cutting speed the second and cutting depth had no direct effect on surface roughness. Residual stress of machined surface increased as the cutting speed and feed rate increased. Microhardness increased as the cutting depth increased and decreased as the feed rate increased. Microhardness at layer depth first decreased and then increased. Cutting speed had no obvious effect on surface microstructure, and no significant phase transition and grain distortion was present. The most effective method of reducing surface roughness is decreasing feed rate. Increasing cutting speed has no significant effect in this regard. Axial and tangential residual stresses are both tensile. In order to improve usability of parts, corresponding measures shall be taken to transfer the stresses to compressive ones.关键词
表面完整性/高强度钢/表面粗糙度/残余应力/显微硬度Key words
surface integrity/high strength steel/surface roughness/residual stress/microhardness分类
矿业与冶金引用本文复制引用
罗智文,焦黎,赵文祥,袁美霞,王林林,王西彬..58SiMn高强度钢车削表面完整性的试验研究[J].表面技术,2017,46(1):234-240,7.基金项目
国家自然科学基金项目(51105035) Supported by the National Science Foundation of China(51105035) （51105035）
