摘要
运用激光表面强化理论和技术,对NiCrMo半冷硬铸铁热轧辊材料进行激光相变硬化和熔凝处理后,表层分别得到针状马氏体和莱氏体白口组织,硬度由原来的51 HRC提高到70 HRC左右,材料的耐磨性提高。
Applying the theory and technology of laser surface hardening,NiCrMo chilled cast iron hot roll material was processed by laser transformation hardening and surface melting.The results show that the white organizations of acicular martensite and ledeburite are obtained in the surface layer,the hardness is increased from 51 HRC to about 70 HRC,and the wear resistance and other performance of the materials are also improved.
出处
《铸造技术》
CAS
北大核心
2012年第10期1174-1175,共2页
Foundry Technology
关键词
铸铁
热轧辊
激光强化
cast iron
hot roll
laser strengthening
