高速铣削镍基高温合金GH3039切屑变形研究  

Study on nickel-based superalloy GH3039 chip deformation for high-speed milling

作　　者：吴桐[1] 赵灿[1] 白玉婷[2] 

机构地区：[1]黑龙江科技大学现代制造工程中心,哈尔滨150022 [2]黑龙江科技大学工程训练与基础实验中心,哈尔滨150022

出　　处：《黑龙江科技大学学报》2015年第3期311-316,共6页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(51405138);黑龙江省自然科学基金项目(E201328)

摘　　要：为探讨高速切削中切屑的微观形态和变形机理,以镍基高温合金GH3039为基体,采用单因素铣削实验的方法,对锯齿形切屑变形机理及切屑进行了相关研究。分析了高速铣削状态下锯齿形切屑的演变过程,切削参数的改变对锯齿形切屑的影响,使用Digimizer测量软件对不同切屑参数下的切屑进行测量分析。结果表明:在高速铣削加工状态下,切屑形态为锯齿形切屑,并随着铣削速度的提高,锯齿形切屑频率增高,铣削深度和每齿进给量对切屑形态无太大影响;剪切角随铣削速度的增高而增大,锯齿化程度越来越高;铣削速度的变化对切屑有决定性的影响,是形成锯齿形切屑的重要因素。This paper is concerned with investigating the serrated chips and chip deformation mechanism. The investigation is performed by using nickel-based superalloy GH3039 and milling single factor test as matrix and employing single factor milling experiment method; analyzing serrated chip＇s evolution of the state of the high-speed milling process,the impact of changing the cutting parameters on serrated chips and using Digimizer software to measure and analyze the chipping taking place under different chip parameters. The investigation suggests that,in the high-speed milling state,the chipping takes place in the form of serrated chipping,and has an increased frequency due to increasing milling speed,without being affected by milling depth and feed rate per tooth; shear angle and the degree of sawtooth are increased as milling speed increases; the change in the milling rate has a decisive influence on the chip and is an important factor in the formation of serrated chips.

关 键 词：高速铣削 GH3039 切屑变形 陶瓷刀具 

分 类 号：TG506.7[金属学及工艺—金属切削加工及机床]