激光是二十世纪六十年代出现的重大科学技术成就之一,它的历史虽然不长但发展极为迅速而广泛,是从发明到实际应用时间最短的学科之一。目前,在工业、农业、军事、医学及科学实验方面都得到了很广泛的应用。从七十年代初期才开始研究试验把它用在金属热处理方面,最近二年国外发表了一些有关这方面的试验研究和实用的文章,介绍了激光热处理的特点和效果,其中某些特点是其 Laser was one of the major achievements of science and technology in the 1960s. Although its history is not long, its development is extremely rapid and widespread. It is one of the disciplines with the shortest time from invention to practical application. At present, it has been widely used in industrial, agricultural, military, medical and scientific experiments. From the beginning of the seventies began to test it to use it in the metal heat treatment, the last two years abroad published some experimental research and practical articles in this area, describes the characteristics and effects of laser heat treatment, some of which are its