3D打印钛合金钻削性能试验研究
2018-07-25
作者：马超1，高铭2，孙小峰1，谢中亚1，明伟伟2，陈明2
单位：1上海飞机制造有限公司；2上海交通大学
摘要：钛合金由于其比强度高、比刚度高、耐高温等特性，而广泛应用于航空航天领域。3D打印钛合金（激光烧结成型）由于加工制造的特殊性，使得其与常用的锻造钛合金拥有不同的组织和力学性能。本文通过钻削试验，探究了不同切削参数（转速、进给量）对切削力和切削温度的影响，为钻削3D打印钛合金提供了合理的加工参数。实验发现：钻孔加工过程中主轴转速在800-1200r/min左右，进给量保持在0.06-0.09mm/r左右比较合适。另外，钻削3D打印钛合金时，刀具磨损形式为：前刀面主要产生涂层剥落和粘结磨损，后刀面产生磨粒磨损。
关键词：3D打印钛合金；加工性能；切削力；切削温度；刀具磨损
中图分类号：TG501；TH162文献标志码：A
Experimental Study on Drilling Performance of 3D Printed Titanium Alloy
Ma Chao，Gao Min，Sun Xiaofeng，Xie Zhongya，Ming Weiwei，Chen Ming
Abstract:Due to its high specific strength，high specific stiffness and heat resistance，titanium alloys have been widely used in aerospace industry.3D printed titanium alloy (electron beam melting) has different microstructure and mechanical properties due to its special processing.The influence of cutting parameters (cutting speed，feed rate) on cutting force and cutting temperature is investigated，which provides a reasonable processing parameter interval for drilling 3D printed titanium alloy.According to drilling experiment，when cutting speed is 800-1200r/min and feed rate is 0.06-0.09mm/r，the machined workpiece is desirable.In addition，when drilling 3D Titanium alloy，the tool wear of front surface is coating delamination and adhesive wear，however abrasive wear on the flank surface.
Keywords:3D printed titanium alloy；machinability；cutting force；cutting temperature；tool wear