Rational Discussion on Material Removal Mechanisms and Machining Damage of Hard and Brittle Materials 关于硬脆材料去除机理与加工损伤的理性思考

Lu，Shouxiang1; Yang，Xiuxuan2; Zhang，Jianqiu1; Zhou，Cong1; Yin，Jingfei3; Zhang，Bi1

2022-08-01

10.3901/JME.2022.15.031

机械工程学报   Impact Factor & Quartile

0577-6686

Hard and brittle materials are typical difficult-to-machine materials. For a long time, the realization of ‘ductile-regime’ grinding has been considered to be the main way towards obtaining high-quality parts. In this study, the problems associated with ‘ductile-regime’ grinding of hard and brittle materials are analyzed from two perspectives of ‘critical depth model’ and ‘damage hidden underneath the ductile-regime’. The main factors resulting in grinding damage to hard and brittle materials are discussed from three factors of ‘size effect’, ‘strain rate effect’, and ‘temperature effect’. Based on the dislocation theory, some important issues such as material deformation, fracture, and removal mechanisms, and machining damage are extensively discussed. This paper is intended to clarify ‘ductile-regime’ grinding, and further demonstrate that ‘ductile-regime’ grinding does not necessarily reflect grinding quality due to subsurface damage induced in a grinding process. Whether plastic deformation or brittle fracture should occur in grinding of hard and brittle materials is a result of the competition and comprehensive interactions among the ‘size effect’, temperature effect’, and ‘strain rate effect’. Ultra-high-speed grinding has a great potential in suppressing machining damage and improving machining efficiency for hard and brittle materials.

ductile-regime grinding hard and brittle materials machining damage material removal mechanism

Chinese

First ; Corresponding

2-s2.0-85140140811

Scopus

1.Department of Mechanical & Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Mechanical Engineering,Dalian University of Technology,Dalian,116024,China
3.College of Mechanical & Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,210016,China

Lu，Shouxiang,Yang，Xiuxuan,Zhang，Jianqiu,等. Rational Discussion on Material Removal Mechanisms and Machining Damage of Hard and Brittle Materials 关于硬脆材料去除机理与加工损伤的理性思考[J]. 机械工程学报,2022,58(15):31-45.

Lu，Shouxiang,Yang，Xiuxuan,Zhang，Jianqiu,Zhou，Cong,Yin，Jingfei,&Zhang，Bi.(2022).Rational Discussion on Material Removal Mechanisms and Machining Damage of Hard and Brittle Materials 关于硬脆材料去除机理与加工损伤的理性思考.机械工程学报,58(15),31-45.

Lu，Shouxiang,et al."Rational Discussion on Material Removal Mechanisms and Machining Damage of Hard and Brittle Materials 关于硬脆材料去除机理与加工损伤的理性思考".机械工程学报 58.15(2022):31-45.