CBN grain wear and its effects on material removal during grinding of FGH96 powder metallurgy superalloy  

作　　者：Ben-Kai Li Biao Zhao Wen-Feng Ding Yu-Can Fu Chang-He Li Rong Wang Yan-Jun Zhao 

机构地区：[1]National Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics and Astronautics,Nanjing,210016,People’s Republic of China [2]School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao,266525,Shandong,People’s Republic of China [3]Aecc Xi’an Aero-engine Ltd,Xi’an,710021,People’s Republic of China [4]State Key Laboratory of Superabrasives,Zhengzhou Research Institute for Abrasive and Grinding,Zhengzhou,450001,People’s Republic of China

出　　处：《Advances in Manufacturing》2023年第1期21-38,共18页先进制造进展（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant Nos.92160301,52175415);Major Special Projects of Aero-engine and Gas Turbine(Grant No.2017-VII-0002-0095);Funding for Outstanding Doctoral Dissertation in NUAA(Grant No.BCXJ19-06).

摘　　要：Grinding with cubic boron nitride(CBN)superabrasive is a widely used method of machining superalloy in aerospace industries.However,there are some issues,such as poor grinding quality and severe tool wear,in grinding of powder metallurgy superalloy FGH96.In addition,abrasive wheel wear is the significant factor that hinders the further application of CBN abrasive wheels.In this case,the experiment of grinding FGH96 with single CBN abrasive grain using different parameters was carried out.The wear characteristics of CBN abrasive grain were analyzed by experiment and simulation.The material removal behavior affected by CBN abrasive wear was also studied by discussing the pile-up ratio during grinding process.It shows that morphological characteristics of CBN abrasive grain and grinding infeed direction affect the CBN abrasive wear seriously by simulation analysis.Attrition wear,micro break,and macro fracture had an important impact on material removal characteristics.Besides,compared with the single cutting edge,higher pile-up ratio was obtained by multiple cutting edges,which reduced the removal efficiency of the material.Therefore,weakening multiple cutting edge grinding on abrasive grains in the industrial production,such as applying suitable dressing strategy,is an available method to improve the grinding quality and efficiency.

关 键 词：FGH96 powder metallurgy superalloy Single-grain grinding Cubic boron nitride(CBN)abrasive wear Material removal behavior 

分 类 号：TG13[一般工业技术—材料科学与工程]