Title: Study on the specific grinding energy of cemented carbide (YG8) grinding with a vitrified diamond wheel in high speed regime

Authors: Youji Zhan; Xiao Tian; Yongchao Xu; Minzhong Jia

Addresses: Advanced Manufacturing Productivity Promotion Center, School of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, Fujian, 350118, China ' School of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, Fujian, 350118, China ' School of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, Fujian, 350118, China ' School of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, Fujian, 350118, China

Abstract: Based on the chip geometry, a new mathematical model is established to correlate specific grinding energy with the maximum undeformed chip thickness, the cutting length, and grinding parameters. This work investigates the energy of cemented carbide (YG8) grinding with a vitrified diamond wheel in high speed regime (the grinding speed of up to 120 m/s). The results indicate that the specific grinding energy increases with the rise of the cutting length, while decreases with the increase in the maximum undeformed chip thickness. The distribution mechanism of the grinding energy shows that the grinding energy is mainly expended for sliding and ductile plowing. A nearly proportional relationship is obtained between the consumed power per unit width and the plowed surface areas generated by all cutting points per unit width. Compared to conventional grinding, it is found that specific grinding energy requirement is increased for high speed grinding of cemented carbide.

Keywords: specific grinding energy; high speed grinding; cemented carbide; vitrified diamond wheel.

DOI: 10.1504/IJAT.2019.106675

International Journal of Abrasive Technology, 2019 Vol.9 No.4, pp.286 - 302

Received: 13 Jun 2019
Accepted: 29 Nov 2019
Published online: 16 Apr 2020 *

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