摘要
采用激光熔覆技术对尿素生产线上的甲胺泵进排液阀零件密封面进行强化。使用5kW横流CO2激光器对预置于基材为Cr18Ni12Mo2Ti不锈钢的阀体阀盖零件密封面上的Co基自熔合金粉末进行单道扫描,得到的激光熔层表面光整,厚度为2mm,基体无变形。激光熔覆层消除了气孔、裂纹、夹杂物等缺陷,其组织致密,晶粒度细小,硬度和强韧性更高。熔层与基体实现了冶金结合。
By laser cladding,the sealing face of the in outlet valve parts in methylamine pump in urea production line has been strengthened.A 5kW laser with CO 2 transverse is used for cladding Co base alloy powder on the Cr18Ni12Mo2Ti stainless steel base of the sealing face of the valve.The surface of the laser cladding layer which has the thickness of 2mm is smooth and without distortion of the valve substrate.Laser cladding layer has characteristics of close texture and fine grain size,higher hardness and strength.And no defects such as gas pore,crack etc.
出处
《金属热处理》
CAS
CSCD
北大核心
2000年第1期20-21,共2页
Heat Treatment of Metals
基金
核工业总公司科研基金
