【作者】 眭向荣； 沈风刚； 张迪； 王清宝； 汤春天； 廖秋尽；

【Author】 SUI Xiang-rong,SHEN Feng-gang,ZHANG Di, WANG Qing-bao, TANG Chun-tian, LIAO Qiujing (Welding Research Institute of Central Research Institute of Building & Construction.MCC, Beijing 100088)

【机构】 中冶集团建筑研究总院焊接研究所；

【摘要】 本文依据窄带不锈钢冷轧支承辊使用工况,选择了YJ012-S堆焊过渡层和YJ243-S药芯焊丝作为堆焊工作层并辅以焊前预热和焊后回火热处理的自动埋弧堆焊工艺对冷轧支承辊进行堆焊修复。堆焊修复后的冷轧支承辊,其强韧性和耐磨性优于原9Cr2Mo辊面金属。修复后的冷轧支承辊在实际生产线上进行运行考核,相对原辊,寿命提高了1倍,满足了冷轧支承辊的使用要求。更多还原

【Abstract】 According to the service performance of the cold rolling back-up roll, YJ012-S was chosen as intermediate material and YJ243-S fluxed-cored wires was chosen as surfacing material. With submerged-arc surfacing process , weld preheating and tempering postwelding, the cold rolling back-up roll was repaired and strengthening. The strength and ductility of the repaired cold rolling back-up roll with good shape is exceed to that of original roll, and the service life increase 100% than that of base metal. The service results after the application in production line shows that the repaired cold rolling back-up roll absolutely meets the service requirement.更多还原