| 提高12Cr2MoWVTiB与12Cr1MoV异种钢焊缝金属冲击韧性的研究 |
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| 引用本文： | 郁炜春,郁晓忠.提高12Cr2MoWVTiB与12Cr1MoV异种钢焊缝金属冲击韧性的研究[J].电焊机,2010,40(2). |
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| 作者姓名： | 郁炜春 郁晓忠 |
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| 作者单位： | 江苏太湖锅炉股份有限公司,江苏,无锡,214187 |
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| 摘 要： | 在制造高温、高压锅炉时经常会遇到耐热合金12Cr2MoWVTiB与12Cr1MoV异种钢的焊接,其焊缝金属冲击值不高的问题尤为突出,严重影响了锅炉的安全运行和可靠性,所以如何提高焊缝冲击韧性值的问题显得非常迫切。通过两次选择焊材及试验分析比较后,最终获得了满意的冲击韧性值,为以后焊材选配提供了保障和依据。在Cr-Mo钢焊接时考虑到长时间热处理后会促成铁素体(F)的形成而导致接头韧性下降,所以应谨慎使用含碳量过低的焊材。另外,对于含铬量大于1.25%的低合金钢焊接,最佳预热温度为150℃～200℃,高于250℃时其冲击韧性值会明显下降。
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| 关 键 词： | 异种钢 GTAW 焊丝 冲击韧性值 |
Research on the impact toughness of weld metal 12Cr2MoWVTiB and 12Cr1MoV dissimilar steel |
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| YU Wei-chun,YU Xiao-zhong.Research on the impact toughness of weld metal 12Cr2MoWVTiB and 12Cr1MoV dissimilar steel[J].Electric Welding Machine,2010,40(2). |
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| Authors: | YU Wei-chun YU Xiao-zhong |
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| Affiliation: | Jiangsu Taihu Boiler Co.;Ltd.;Wuxi 214187;China |
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| Abstract: | Heat-resisting alloy 12Cr2MoWVTiB and 12Cr1MoV dissimilar steel welding when manufacture high temperature highpressure boiler will meet frequently,its weld metal impact value not high question outstandingly,serious influence boiler safe operation use reliability,will therefore solve enhances the welded joint's impact toughness the question appears very urgent.Therefore after two choice,analyze and compare welding materials and experiment,has obtained the satisfactory resilient value finally,was the later we... |
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| Keywords: | heterogeneous steel GTAW welding wire resilient value |
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