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
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
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)