TY - JOUR
T1 - Investigation on the peak temperature and surface defects on the carbon steel treated by rotating CW laser
AU - Zhuang, Shusen
AU - Kainuma, Shigenobu
AU - Yang, Muye
AU - Haraguchi, Manabu
AU - Asano, Takahiro
N1 - Funding Information:
This research study was kindly supported by JSPS KAKENHI under Grant Numbers JP19K15074 and JP19H02227. The financial support from Kyushu Regional Management Service Association is acknowledged. The support provided by China Scholarship Council (File No.201809350010) is acknowledged.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/3
Y1 - 2021/3
N2 - A newly developed rotating continuous-wave laser equipment was adopted as an alternative laser-based surface cleaning method. To evaluate the thermal effects of laser cleaning on base material, a modified calculation method for laser-induced peak temperature distribution considering overlapping effects was proposed. Various laser-processing parameters were adopted to irradiate carbon steel plates. The re-melted zone (MZ) of laser-treated specimens was observed under optical microscopy and used to verify the calculation method. Surface morphologies and roughness of laser-treated specimens were also investigated. The results showed that the peak temperature distribution obtained from the modified calculation method properly describes the MZ depth in laser-treated specimens. Investigation on laser-treated specimens revealed that results of laser heat effects improved in rougher surface conditions, and that frequent overlapping of laser beam can induce surface defects. The modified calculation method could help to optimize laser processing parameters to reduce melting of base material and avoid surface defects.
AB - A newly developed rotating continuous-wave laser equipment was adopted as an alternative laser-based surface cleaning method. To evaluate the thermal effects of laser cleaning on base material, a modified calculation method for laser-induced peak temperature distribution considering overlapping effects was proposed. Various laser-processing parameters were adopted to irradiate carbon steel plates. The re-melted zone (MZ) of laser-treated specimens was observed under optical microscopy and used to verify the calculation method. Surface morphologies and roughness of laser-treated specimens were also investigated. The results showed that the peak temperature distribution obtained from the modified calculation method properly describes the MZ depth in laser-treated specimens. Investigation on laser-treated specimens revealed that results of laser heat effects improved in rougher surface conditions, and that frequent overlapping of laser beam can induce surface defects. The modified calculation method could help to optimize laser processing parameters to reduce melting of base material and avoid surface defects.
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U2 - 10.1016/j.optlastec.2020.106727
DO - 10.1016/j.optlastec.2020.106727
M3 - Article
AN - SCOPUS:85096178694
SN - 0030-3992
VL - 135
JO - Optics and Laser Technology
JF - Optics and Laser Technology
M1 - 106727
ER -