硬质合金钻头绿色钻削镍基高温合金的试验研究  

EXPERIMENTAL STUDY ON GREEN DRILLING NICKEL-BASE SUPERALLOY WITH CARBIDE BIT

作　　者：李辉[1,2] 高峰 李艳[1] LI Hui;GAO Feng;LI Yan(Key Laboratory of NC Machine Tools and Integrated Manufacturing Equipment of the Ministry of Education,School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi5 an 710048,China;Department of Mechanical,Henan University of Engineering,Zhengzhou 451191,China)

机构地区：[1]西安理工大学机械与精密仪器工程学院,教育部数控机床及机械制造装备集成重点实验室,西安710048 [2]河南工程学院机械工程学院,郑州451191

出　　处：《机械强度》2023年第1期76-83,共8页Journal of Mechanical Strength

基　　金：陕西省重点研发计划项目(2018ZDXM-GY-074);国家自然科学基金项目(51775432)资助。

摘　　要：通过硬质合金钻头YG10在常规干钻削、气冷、低温二氧化碳(LCO_(2))冷却三种绿色切削条件下钻削镍基高温合金GH4169,研究镍基高温合金的钻削性能和钻头磨损机理,旨在提高钻头加工寿命。通过分析不同切削条件下的钻头寿命、钻削力、钻削温度、钻头磨损形貌和加工表面粗糙度,结果表明,气冷与LCO_(2)冷却均能改善切削工况,降低钻削力和钻削温度,并延长钻头寿命。气冷切削和LCO_(2)冷却可使钻头寿命比常规干钻削分别延长33%和2.33倍。硬质合金钻头钻削镍基高温合金时对工况要求较高,不适宜工况的主要失效形式是崩刃甚至断刃,在工况适宜时的主要失效形式是黏结磨损。The carbide bit YG10 green drilled nickel-base superalloy GH4169 through dry drilling, air cooling and LCO_(2) cooling to explore the drilling performance and wear mechanism of nickel-base superalloy, with the purpose of improving the bit life. According to the analysis of bit life, drilling force, drilling temperature, drill wear morphology and machined surface roughness under different cutting conditions, both air cooling and LCO_(2) cooling can improve cutting conditions, reduce drilling force and drilling temperature, and prolong bit life. Air cooling and LCO_(2) cooling can increase cutting life by 33% and 2.33 times, respectively. It has a high requirement on the working condition when the carbide bit drills nickel-base superalloy. The main failure mode is chipping or even broken edge in inappropriate working conditions, and the main failure mode is adhesive wear in appropriate working conditions.

关 键 词：硬质合金 镍基高温合金 绿色切削 钻头寿命 黏结磨损 

分 类 号：TG113.264[金属学及工艺—物理冶金] TG132.32[金属学及工艺—金属学] TH142.2[一般工业技术—材料科学与工程]