南京航空航天大学学报（英文版）2020，Vol.37Issue(3)：424-433,10.
碳纤维增强碳化硅基复合材料的低温铣削研究
Feasibility Study on Cryogenic Milling of Carbon Fiber Reinforced Silicon Carbide Composites
摘要
Abstract
Carbon fiber reinforced silicon carbide matrix(Cf/SiC)composites have the most potential application for high-temperature components of aerospace high-end equipment. However,high cutting temperature,rapid tool wear and severe surface damages are the main problems in dry cutting Cf/SiC composites process. The feasibility study on cryogenic milling of Cf/SiC composites using liquid nitrogen as coolant is investigated. Influences of milling parameters and coolant on temperature,cutting force,surface quality and tool wear are investigated,which is compared with dry cutting. Experimental results reveal that the cutting temperature in cryogenic milling of Cf/SiC composites is reduced by about 40％—60％ compared with dry cutting. The milling force increases gradually with the increase of spindle speed,feed rate,depth and width of milling in cryogenic milling process. In addition,the machined surface quality in cryogenic milling is superior to that in dry cutting process. Fiber fracture,matrix damage and fiber matrix debonding are main material removal mechanisms. Flank face wear is the main wear form of the polycrystalline diamond(PCD) end mills. The tool life is prolonged in the cryogenic milling process because the reduced temperature inhibits the softening of Co binder and phase transition of diamond in the PCD end mills.关键词
Cf/SiC复合材料/低温铣削/切削温度/表面质量/刀具磨损Key words
Cf/SiC composites/cryogenic milling/cutting temperature/surface quality/tool wear分类
机械制造引用本文复制引用
徐亮,赵国龙,张健强,王凯,王新永,郝秀清..碳纤维增强碳化硅基复合材料的低温铣削研究[J].南京航空航天大学学报（英文版）,2020,37(3):424-433,10.基金项目
This work was supported by the Na- tional Natural Science Foundation of China (Nos. 51705249, 51875285) , the China Postdoctoral Science Foundation(No. 2019M661823),the Aeronautical Science Foundation of China(No. 2017ZE52047),and the Defense Industrial Technology Development Program (No. JCKY2018605C018). The authors realize that the time and space available for a review of such an ambitious subject are limited and,thus,regretfully,we are unable to cover many important contributions. The authors would like to acknowl-edge the following people for their assistance:HE Ning,LI Liang,HE Lei,XIA Hongjun,and HU Maoshun,all with the College of Mechanical and Electrical Engineering,NU-AA. （Nos. 51705249, 51875285）
