Laser-induced oxidation assisted micro milling of high aspect ratio microgroove on WC-Co cemented carbide

作     者：Guolong ZHAO Hongjun XIA Yang ZHANG Liang LI Ning HE Hans Nφrgaard HANSEN Guolong ZHAO;Hongjun XIA;Yang ZHANG;Liang LI;Ning HE;Hans Nφrgaard HANSEN

作者机构：National Key Laboratory of Science and Technology on Helicopter TransmissionNanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Mechanical EngineeringTechnical University of DenmarkKgs.Lyngby 2800Denmark 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2021年第34卷第4期

页      面：465-475页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 082503[工学-航空宇航制造工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 080201[工学-机械制造及其自动化] 

基　　金：the National Natural Science Foundation of China(No.51705249) the China Postdoctoral Science Foundation(No.2019M661823) the Aeronautical Science Foundation of China(No.2017ZE52047) the 111 Project on Key Technology in Sustainable Manufacturing(No.B16024) 

主　　题：Cemented carbide High aspect ratio Laser-induced oxidation Micro milling Microgroove Tool wear 

摘      要：Severe tool wear and poor surface quality are the main problems during micro machining of cemented *** this work,an innovative hybrid process of laser-induced oxidation assisted micro milling(LOMM)was proposed to solve the problems.A nanosecond laser was utilized to induce oxidation of the WC-20%Co material,producing loose oxide which was easy to *** micro machinability of the material was improved by laser-induced *** oxidation mechanisms of cemented carbide were studied.A microgroove with a depth of 2.5 mm and aspect ratio of 5 was fabricated *** milling force,surface quality and tool wear mechanisms were *** comparison,a microgroove was also fabricated with conventional micro milling(COMM)using identical milling *** revealed that in LOMM the milling force and tool wear rate were extremely low during removing the *** machined surface quality and dimensional accuracy achieved by LOMM were superior to those obtained by *** surface roughness Saof the microgroove bottom reached 88 nm in LOMM,while the cross-sectional geometry of the microgroove was a *** of the microgroove sidewall machined by LOMM was better than that by *** tool wear forms in LOMM were coating spalling and slight tool nose *** with COMM,the tool life in LOMM was prolonged *** indicates that the proposed hybrid process is an effective and efficient way to fabricate high aspect ratio micro-features with high dimensional accuracy.