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以积分球反射率测量装置平台为基础,开展了大气和真空环境下,连续激光辐照30CrMnSiA碳钢材料加热效率实验研究,得到在大气常压、20Pa和0.4Pa真空环境下,30CrMnSiA碳钢材料的温度历史曲线,以及辐照过程中材料表面反射率变化曲线。在大气环境下,激光加热诱导30CrMnSiA碳钢发生剧烈的氧化放热反应,材料的反射率大幅下降,导致材料温升迅速,最后熔穿;而在真空环境下,材料氧化反应缓慢,反射率变化较小,致使材料温升缓慢。结果表明:大气和真空环境下,连续激光对30CrMnSiA碳钢金属材料的加热效率差异明显,大气环境高于真空环境。
Based on the platform of integrating sphere reflectance measuring device, the experimental research on the heating efficiency of 30CrMnSiA carbon steel irradiated by continuous laser in atmospheric and vacuum environment was carried out. Under atmospheric pressure, 20Pa and 0.4Pa vacuum environment, 30CrMnSiA carbon steel Temperature history curve, and the surface of the material during the irradiation reflectance curve. Under atmospheric conditions, laser heating induced intense oxidation and exothermic reaction of 30CrMnSiA carbon steel, the material’s reflectivity dropped significantly, resulting in the rapid temperature rise of the material, finally melting; and in the vacuum environment, the material oxidation reaction is slow, the reflectivity changes Smaller, resulting in slow temperature rise of the material. The results show that the heating efficiency of 30CrMnSiA carbon steel with continuous laser is obviously different under atmospheric and vacuum conditions, and the atmospheric environment is higher than the vacuum environment.