微波烧结SiAlON陶瓷立铣刀力学性能和切削性能研究  

Study of Mechanical and Cutting Properties of Microwave SinteredSiAlON Ceramic End Mills

作　　者：邢桢怡 殷增斌 洪东波 汪振华[1] 袁军堂[1] Xing Zhenyi;Yin Zengbin;Hong Dongbo;Wang Zhenhua;Yuan Juntang

机构地区：[1]南京理工大学机械工程学院

出　　处：《工具技术》2024年第8期19-25,共7页Tool Engineering

基　　金：国家自然科学基金(52075266,52175416)

摘　　要：采用微波烧结方法制备了用于磨削SiAlON陶瓷立铣刀的棒料,研究了压制方式及压力对微波烧结SiAlON陶瓷棒料微观结构和力学性能的影响规律,制备了SiAlON陶瓷立铣刀,并对其切削性能进行了研究。结果表明:对于大长径比SiAlON陶瓷,径向压制可以获得密度分布更加均匀的生坯,压制压力为100MPa时,SiAlON陶瓷试样无微观缺陷,具有良好的机械性能。微波烧结的SiAlON陶瓷立铣刀可用于镍基高温合金高速切削,刀具寿命是进口涂层刀具的2倍。Microwave sintering method is used to prepare bar stock for grinding SiAlON ceramic end mills.The influence of pressing method and pressure on the microstructure and mechanical properties of microwave sintered SiAlON ceramic bar stock is studied,and SiAlON ceramic end mills are prepared,and the cutting properties are investigated.The results show that for large aspect ratio SiAlON ceramics,radial pressing can obtain raw billets with more uniform density distribution,and the SiAlON ceramic specimens at a pressing pressure of 100 MPa are free of microscopic defects and have good mechanical properties.Microwave sintered SiAlON ceramic end mills can be used for high-speed cutting of nickel-based high-temperature alloys,and the tool life is twice as long as that of imported coated tools.

关 键 词：微波烧结 SIALON陶瓷 陶瓷刀具 压制压力 高速铣削 

分 类 号：TG711[金属学及工艺—刀具与模具] TH162[机械工程—机械制造及自动化]