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Materials 2019, 12(3), 534; https://doi.org/10.3390/ma12030534

Temperature Field Numerical Analysis Mode and Verification of Quenching Heat Treatment Using Carbon Steel in Rotating Laser Scanning

1
Department of Mechanical Engineering, Cheng Shiu University, Kaohsiung 83347, Taiwan
2
Center for Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, Kaohsiung 83347, Taiwan
3
Super Micro Mass Research & Technology Center, Cheng Shiu University, Kaohsiung 83347, Taiwan
4
Department of Mechanical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan
5
Department of Industrial Upgrading Service, Metal Industries Research & Development Centre, Kaohsiung 81160, Taiwan
6
Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
*
Author to whom correspondence should be addressed.
Received: 20 December 2018 / Revised: 23 January 2019 / Accepted: 2 February 2019 / Published: 11 February 2019
(This article belongs to the Special Issue Selected Papers from TIKI ICICE 2018)
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Abstract

Temperature history and hardening depth are experimentally characterized in the rotational laser hardening process for an AISI 1045 medium carbon steel specimen. A three-dimensional finite element model is proposed to predict the temperature field distribution and hardening zone area. The laser temperature field is set up for an average distribution and scanned along a circular path. Linear motion also takes place alongside rotation. The prediction of hardening area can be increased by increasing the rotational radius, which in turn raises the processing efficiency. A good agreement is found between the experimental characterized hardness value and metallographic composition. The uniformity of the hardening area decreases with increasing laser scanning speed. The increased laser power input could help to expand the hardening depth. View Full-Text
Keywords: heat treatment; rotational laser scanning; quenching; martensite heat treatment; rotational laser scanning; quenching; martensite
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Hung, T.-P.; Hsu, C.-M.; Tsai, H.-A.; Chen, S.-C.; Liu, Z.-R. Temperature Field Numerical Analysis Mode and Verification of Quenching Heat Treatment Using Carbon Steel in Rotating Laser Scanning. Materials 2019, 12, 534.

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