Laser & Optoelectronics Progress, Volume. 58, Issue 17, 1714002(2021)

Effect of Energy Density on Surface Morphology and Properties of H13 Mold Steel via Picosecond Laser Cleaning

Wei Peng1、* and Hui Lei2
Author Affiliations
  • 1School of Mechanical and Electrical Engineering, Henan Polytechnic, Zhengzhou , Henan 450046, China
  • 2School of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou , Henan 450001, China
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    Using a 1064-nm picosecond fiber laser, five different energy densities were designed to conduct laser cleaning experiments on oil and rust stains present on H13 hot die steel. The results show that energy densities of 2 J/cm2 and 3 J/cm2 have the best cleaning effect; the surface roughness Ra can reach (1.1 ± 0.3) μm and (1.5 ± 0.5) μm, respectively; and the surface hardness increases to (256 ± 3.8) HV and (256 ± 2.9) HV, respectively. The main phases after cleaning are VC, (Mo, Cr)6C, (Cr, Fe)7C3, and (V, Cr)2C. In addition, the EDS results show that the contents of C, Mo, V, and Cr on the mold surface are increased.

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    Wei Peng, Hui Lei. Effect of Energy Density on Surface Morphology and Properties of H13 Mold Steel via Picosecond Laser Cleaning[J]. Laser & Optoelectronics Progress, 2021, 58(17): 1714002

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Dec. 7, 2020

    Accepted: Jan. 7, 2021

    Published Online: Sep. 14, 2021

    The Author Email: Peng Wei (pengwei1969@126.com)

    DOI:10.3788/LOP202158.1714002

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