标题：Tool damage and machined-surface quality using hot-pressed sintering Ti(C7N3)/WC/TaC cermet cutting inserts for high-speed turning stainless steels
作者：Zou, Bin; Zhou, Huijun; Huang, Chuanzhen; Xu, Kaitao; Wang, Jun
作者机构：[Zou, Bin; Zhou, Huijun; Huang, Chuanzhen; Xu, Kaitao; Wang, Jun] Shandong Univ, Sch Mech Engn, Ctr Adv Jet Engn Technol CaJET, Jinan 250061, Peoples 更多
通讯作者地址：[Zou, B]Shandong Univ, 17923 Jing Shi Rd, Jinan 250061, Peoples R China.
来源：INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
关键词：Ti(C7N3); Cutting inserts; Tool damage; Machined-surface; Stainless; steel
摘要：ATi(C7N3)/WC/TaC cermet cutting tool was developed using a hot-pressed technology. A standard orthogonal array was used to investigate the cutting performance of this newly developed insert in the high-speed turning of 17-4PH martensitic and 321 austenitic stainless steels. The effects of the cutting parameters on the tool life and surface quality were analysed to examine the performance of the inserts based on Taguchi method. The mechanisms of tool damage and machined-surface generation and their relationships were also thoroughly discussed to understand the machinability of different stainless steels. The used cutting parameters are as follows: a cutting speed of 350 similar to 400 m/min for 17-4PH steel and 300 similar to 350 m/min for 321 steel and a feed of 0.10 mm/r and a depth of cut of 0.30 similar to 0.35 mm, which is considered to be a notably efficient parameter for machining stainless steel. The crater wear and flank wear prevailed in the machining of 17-4PH martensitic stainless steel, whereas the flank wear was serious and edge chipping occurred in the machining of 321 austenitic stainless steel. There were some pits on the machined-surfaces of 17-4PH steel and some material side flow on the machined-surface of 321 steel, which is related with the e material properties of these two stainless steels.