Study on the removal mechanism in multi-abrasive micro-grinding of nickel-based superalloy

被引:2
|
作者
Chen, Minghui [1 ]
Cai, Ming [1 ]
Gong, Yadong [2 ]
Zhu, Tao [1 ]
Gong, Qiang [1 ]
Liu, Yu [1 ]
机构
[1] Liaoning Petrochem Univ, Sch Mech Engn, Fushun 113001, Peoples R China
[2] Northeastern Univ, Sch Mech Engn & Automat, Shenyang 110819, Peoples R China
基金
中国国家自然科学基金;
关键词
Nickel-based single crystal superalloy DD5; Multi-grind grinding; Surface roughness; Chip formation; Finite element analysis; FORCE;
D O I
10.1007/s00170-023-12040-6
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This study introduces a pioneering three-dimensional simulation model for Abaqus multi-grit grinding, developed via Python's secondary capabilities. The model generates random 48-sided abrasive grains arranged on a cylinder following a characteristic distribution pattern, thus emulating a 200-grit micro-abrasive rod. The model considers varying spindle speeds, grinding depths, and feed rates to investigate the influence of multi-grit on the surface profiles of chips and workpieces for the nickel-based single-crystal Superalloy DD5. The multi-grain simulation reveals that grain 1 produces serrated chips at 60 k(r)/min in 46% of the global process, increasing to 60% at 80 k(r)/min. Abrasive generation and grinding initiation occur 10% and 12% earlier, respectively, at 100 k(r)/min compared to 80 k(r)/min Additionally, peak grinding forces rise with displacement as spindle speed increases. With a feed rate of 2 m/s, serrated chips constitute 36% of the global process in grain 1, increasing to 50% at 3 m/s. At a peak feed rate of 4 m/s, grinding force decreases as displacement increases. The normal distribution of abrasive particles causes an increase in the number of particles involved in grinding as grinding depth grows. This innovative model contributes valuable insights into the complex dynamics of multi-grit grinding processes and optimization strategies.
引用
收藏
页码:2199 / 2220
页数:22
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