本工作是利用苏联的二氧化碳激光器对含碳量0.006—0.78％C的各种钢件进行表面激光淬火,该激光器输出功率为2.5—5千瓦,总幅射功率密度为7.5×10~3-4.5×10~5瓦/厘米~2,试件移动速度为5-40毫米/秒。此时得到的淬火区域为表面有局部熔化、宽度为2.5-3毫米的带状区;而利用扫描装置可得到无熔化、宽度达20毫米的淬火区。淬火层深度为0.5—0.6毫米。用碳、磷酸盐或氧化层作吸收涂层能使能量吸收系数由8％提高到40—70％。 This work is the use of the Soviet Union’s carbon dioxide laser on the carbon content of 0.006-0.78% C of various steel surface laser quenching, the laser output power of 2.5-5 kW, the total radiation power density of 7.5 × 10 ~ 3-4.5 × 10 ~ 5 W / cm ~ 2, the specimen moving speed is 5-40 mm / s. The quenched area obtained at this time is a strip-shaped zone whose surface is partially melted and has a width of 2.5-3 mm; and a quenching zone with a melting width of 20 mm can be obtained by using a scanning device. Hardened layer depth of 0.5-0.6 mm. Absorption coatings made of carbon, phosphate or oxide increase the energy absorption coefficient from 8% to 40-70%.