微波烧结复杂刃形SiAlON陶瓷刀具铣削GH4169高温合金性能研究  

Cutting Performance of Microwave-sintered Complex-shaped SiAlON Ceramic Cutting Tools in Milling GH4169 Superalloys

作　　者：洪东波 殷增斌 陈为友 郑轶彤 袁军堂[1] HONG Dongbo;YIN Zengbin;CHEN Weiyou;ZHENG Yitong;YUAN Juntang(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,210094)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《中国机械工程》2023年第7期770-779,788,共11页China Mechanical Engineering

基　　金：国家自然科学基金(51875291,52075266)。

摘　　要：针对目前陶瓷刀具结构简单(平刀面为主)、制造效率低等弊端,开展了复杂刃形SiAlON陶瓷刀具微波制造技术研究。通过有限元仿真研究不同刀具结构参数对SiAlON陶瓷刀具铣削GH4169高温合金力和热的影响规律;采用微波烧结技术制造了平刀面和复杂刃形SiAlON陶瓷刀具;通过试验研究刀具结构对SiAlON刀具铣削GH4169高温合金性能的影响,确定了SiAlON陶瓷铣刀片的最优结构。结果表明:基于微波烧结的复杂刃形SiAlON陶瓷刀具获得了设计的刀具结构且刀具刃口具有优良的致密性和力学性能;与平刀面SiAlON陶瓷刀具相比,具有复杂刃形的SiAlON陶瓷刀具有更好的耐磨损性能,高速铣削GH4169高温合金刀具寿命提高了约71.4%。In view of the drawbacks of current ceramic cutting tools,such as low manufacturing efficiency and simple structure(flat mainly),microwave manufacturing of complex-shaped SiAlON ceramic cutting tools was studied.Finite element simulation was applied to investigate the influences of tool geometry of SiAlON ceramic cutting tools on cutting force and temperature when milling GH4169 superalloys.Then,the designed flat and complex-shaped SiAlON cutting inserts were fabricated by microwave sintering.Finally,the effects of tool geometry on the cutting performance of SiAlON ceramic cutting tool in milling GH4169 superalloys were studied and the optimal structure was determined.The results indicate that the designed tool structures are obtained in the complex-shaped SiAlON ceramic cutting inserts by the microwave sintering,and the tool edge possesses excellent density and well mechanics properties.Compared with flat SiAlON cutting inserts,the wear resistance of complex-shaped SiAlON cutting inserts with optimized tool geometry is well improved,of which the tool life is increased by approximately 71.4%in milling GH4169 superalloys.

关 键 词：复杂刃形刀片 SIALON陶瓷 微波烧结 刀具结构 GH4169高温合金 

分 类 号：TG711[金属学及工艺—刀具与模具]