| 保护气体对含铌不锈钢药芯焊丝347L脱渣性的影响 |
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| 引用本文： | 赵雁潮,魏琪,栗卓新,任春岭.保护气体对含铌不锈钢药芯焊丝347L脱渣性的影响[J].焊接学报,2006,27(11):77-80. |
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| 作者姓名： | 赵雁潮 魏琪 栗卓新 任春岭 |
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| 作者单位： | 北京工业大学,材料学院,北京,100022 |
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| 摘 要： | 研究了不同保护气体CO2,Ar和混合气体(CO2 Ar)对347L型含铌不锈钢药芯焊丝脱渣性的影响,并在相同的条件下对自制的GDQA347L(3号)与TFW-347L和AT-Y347L型两种不锈钢药芯焊丝的脱渣性进行了对比,深入分析了熔渣的宏观形态和微观组织对脱渣性的影响.结果表明,研制的GDQA347L焊丝在Ar气保护下的脱渣性最好,混合气体保护下的脱渣性次之,CO2保护气体的脱渣性最差,由于CO2气体在高温下变为活性气体的,具有很强的氧化性,容易造成脱渣困难;三种焊丝在不同保护气体下熔渣的微观组织形态所表现的规律基本上一致,在熔渣微观组织中,当其条带状体的尺寸长、面积大时,对脱渣有利.
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| 关 键 词： | 347L型不锈钢药芯焊丝 脱渣性 保护气体 |
| 文章编号： | 0253-360X（2006）11-077-04 |
| 收稿时间： | 11 17 2005 12:00AM |
| 修稿时间： | 2005-11-17 |
Effects of different shielding gases on slag detachability of type 347L flux-cored wire for stainless steels containing Nb |
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| ZHAO Yan-chao,WEI Qi,LI Zhuo-xin and REN Chun-ling.Effects of different shielding gases on slag detachability of type 347L flux-cored wire for stainless steels containing Nb[J].Transactions of The China Welding Institution,2006,27(11):77-80. |
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| Authors: | ZHAO Yan-chao WEI Qi LI Zhuo-xin and REN Chun-ling |
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| Affiliation: | The College of Material Science and Engineering, Beijing University of Technology, Beijing 100022, China,The College of Material Science and Engineering, Beijing University of Technology, Beijing 100022, China,The College of Material Science and Engineering, Beijing University of Technology, Beijing 100022, China and The College of Material Science and Engineering, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | The effects of different shielding gases CO_2,Ar and mixture gases(CO_2 Ar) on the slag detachability of type 347L flux-cored wire for stainless steels containing Nb were investigated.Slag detachability of home-made GDQA347L(3#) was compared with that of TFW-347L flux-cored wire and AT-Y347L flux-cored in the same condition.The effects of slag microstructure and macroscop on the slag detachability of three type flux-cored wires were investigated.The results showed that the best slag detachability of GDQA347L flux-cored wire was under the shielding gas of Ar,and the better slag detachability was under the shielding gas of mixture gas(CO_2 Ar),and the worst slag detachability was under the shielding gas of CO_2.Because the CO_2 gas transfer into active gas at high temperature with strong oxidizability which will make detachment difficult on the slag detachability,and it is proved that the regular of microstructure of three flux-cored wires under different shielding gases is similar.It is benefit for the slag detachability when the trunk of the strip-shaped slag microstructure is long and the area of the branch is large. |
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| Keywords: | type 347L flux-cored wire for stainless steels slag detachability shielding gas |
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