METHOD FOR PRODUCTION OF HARDENING COATING Russian patent published in 1998 - IPC

FIELD: materials technology, in particular, production of high-grade coatings on machine parts operating under conditions of high pressures and temperatures; may be used in engineering fields where high physical and mechanical and service characteristics of working surfaces of machines are required. SUBSTANCE: includes preliminary cooling, withdrawal of a part of treated zone of article from process medium. Then this zone is heated by laser beam in the air under conditions of fusing with concurrent cooling of boundary of zone of laser effect with process medium. EFFECT: provision of production of coatings with preset physical and mechanical operating characteristics. 2 dwg , 1 tbl