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.

采用新开发的旋转连续波激光设备作为基于激光的替代表面清洁方法。为了评估激光清洗对基材的热效应，提出了一种考虑重叠效应的激光诱导峰值温度分布的改进计算方法。采用各种激光加工参数来辐照碳钢板。在光学显微镜下观察激光处理样品的重熔区（MZ），并将其用于验证计算方法。还研究了激光处理样品的表面形貌和粗糙度。结果表明，通过改进的计算方法获得的峰值温度分布正确地描述了激光处理样品中的MZ深度。对经过激光处理的样品的研究表明，在较粗糙的表面条件下，激光热效应的结果得到改善，并且激光束的频繁重叠会引起表面缺陷。改进的计算方法可以帮助优化激光加工参数，以减少基材的熔化并避免表面缺陷。