中国机械工程2023，Vol.34Issue(24)：2975-2985,11.DOI:10.3969/j.issn.1004-132X.2023.24.009
高压低温CO2射流冷却条件下高速车削淬硬轴承钢的试验研究
Experimental Study of High-speed Turning of Hardened Bearing Steels under High-pressure Cryogenic CO2 Jet Cooling Conditions
摘要
Abstract
In the high-speed hard turning processes for hardened bearing steels,there were some problems such as rapid tool wear,serious chip entanglement and poor machined surface quality.The high-speed hard turning tests of GCr15 bearing ring were carried out with PCBN tools using high-pressure cryogenic CO2 jet as cooling medium,and compared with high-pressure emulsion and high-speed dry cutting,and the effects of cooling conditions and cutting parameters on cutting perform-ances and machined surface quality were analyzed.The results show that within a certain range of the cutting parameters,the use of high-pressure cryogenic CO2 jet assisted cutting may effectively reduce tool wears and improve chip breakings,but it is also more likely to chipping when the tools are in the stage of severe wear.When the cutting speed is high,the high pressure cryogenic CO2 jet may im-prove the surface quality of the workpieces more significantly,effectively reduce the surface roughness of the workpieces,increase the residual compressive stresses and surface microhardnesses.关键词
低温加工/聚晶立方氮化硼刀具/淬硬轴承钢/刀具磨损/加工表面质量Key words
cryogenic machining/polycrystalline cubic boron nitride(PCBN)tool/hardened bear-ing steel/tool wear/machined surface quality分类
矿业与冶金引用本文复制引用
李小睿,赵威,李浩,史卫奇,何宁..高压低温CO2射流冷却条件下高速车削淬硬轴承钢的试验研究[J].中国机械工程,2023,34(24):2975-2985,11.基金项目
国家自然科学基金(51975289) （51975289）
