The laser melting and covering technology was used to intensify the seal surfaces of the components of the combined valves of methylamine pumps in the production line of urea. 采用激光熔覆技術(shù)對尿素生產(chǎn)線(xiàn)上的甲胺泵組合閥零件密封面進(jìn)行強化，激光強化的熔層表面光整，加工余量小，基體無(wú)變形。
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