轧钢助卷辊和深弯辊堆焊技术研究

钢铁钒钛, 2007, 28(1): 61-72. doi: 10.3969/j.issn.1004-7638.2007.01.013

轧钢助卷辊和深弯辊堆焊技术研究

马耀东 ^1, , 符定梅 ^2, , 沈风刚 ^3, , 刘景凤 ^4,

1.大连华锐重工特种备件制造有限公司,辽宁,大连,116052

2.中冶集团建筑研究总院焊接研究所,北京,100088

3.中冶集团建筑研究总院焊接研究所,北京,100088

4.中冶集团建筑研究总院焊接研究所,北京,100088

关键词：助卷辊 , 深弯辊 , 堆焊 , 电磁搅拌 , 硬度 , 耐磨性

Study on Surfacing Technologies of Wrapper Rolls and Deep Camber Rolls Used for Rolling Mill

采用YJ356-S和YJ358-S焊丝分别堆焊修复轧钢助卷辊和深弯辊,并详细研究了堆焊工艺.助卷辊堆焊层组织为回火马氏体+少量的贝氏体和索氏体,并在马氏体基体上含有高硬度碳化物;深弯辊堆焊层组织为回火马氏体+弥散分布碳化物.回火处理后,助卷辊工作层硬度(HRC)达到59.9,深弯辊工作层硬度达到63.1.磨损试验结果显示,YJ356-S堆焊金属的相对耐磨系数为0.105,YJ358-S堆焊金属的相对耐磨系数为0.121,都具有良好的耐磨性.另外,堆焊时加入电磁搅拌,有利于提高硬度并降低堆焊层的硬度落差,改善堆焊材料的耐磨性.

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轧钢助卷辊和深弯辊堆焊技术研究

Study on Surfacing Technologies of Wrapper Rolls and Deep Camber Rolls Used for Rolling Mill

参考文献