Assessment of the Effect of Thermal-Assisted Machining on the Machinability of SKD11 Alloy Steel

Thi-Bich Mac; The-Thanh Luyen; Duc-Toan Nguyen

doi:10.3390/met13040699

Metals (Apr 2023)

Assessment of the Effect of Thermal-Assisted Machining on the Machinability of SKD11 Alloy Steel

Thi-Bich Mac,
The-Thanh Luyen,
Duc-Toan Nguyen

Affiliations

Thi-Bich Mac: Faculty of Mechanical Engineering, Hungyen University of Technology and Education, Hungyen 100000, Vietnam
The-Thanh Luyen: Faculty of Mechanical Engineering, Hungyen University of Technology and Education, Hungyen 100000, Vietnam
Duc-Toan Nguyen: School of Mechanical Engineering, Hanoi University of Science and Technology, 1A-Dai Co Viet Street, Hai Ba Trung District, Hanoi City 100000, Vietnam

DOI: https://doi.org/10.3390/met13040699
Journal volume & issue: Vol. 13, no. 4
p. 699

Abstract

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This study aimed to investigate the effects of Thermal-Assisted Machining (TAM) on SKD11 alloy steel using titanium-coated hard-alloy insert cutting tools. The microstructure, material hardness, chip color, cutting force, chip shrinkage coefficient, roughness, and vibration during TAM were evaluated under uniform cutting conditions. The machining process was monitored using advanced equipment. The results indicated that thermal-assisted processing up to 400 °C did not alter the microstructure and hardness of the SKD11 alloy steel. However, a significant variation in chip color was observed, indicating improved heat transfer through TAM. The cutting force, vibration amplitude of the workpiece, and surface roughness all decreased with increasing TAM. Conversely, the chip shrinkage coefficient of the machined chips tended to increase due to the high temperatures.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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