| 摘要 |
PURPOSE:To form a satisfactory roll surface without pock marking and mottling in correcting and reconditioning by laser working the surface of a rolling roll by working the roll surface by a laser beam with the powder density and mutual working time in a specific range. CONSTITUTION:Reconditioning of the surface of a rolling roll by laser beam working is accomplished by setting the powder density in an about 1X10<5>- 1X10<7>W/cm<2> range and mutual working time within a 1X10<-4>-3X10<-3>sec range to form the satisfactorily reconditioned roll surface. If the powder density is below the above-mentioned range, scarfing is insufficient and the surface is mottled. If the above-mentioned range is exceeded, local melting arises and pock marks arise. If the mutual working time is below the above-mentioned range, scarfing is insufficient and the surface is mottled and if the time is longer than said range, the pock marks are formed by local melting. |
