| CeO2对自保护药芯焊丝性能的影响 |
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| 引用本文： | 张占伟,李午申,薛振奎,白世武.CeO2对自保护药芯焊丝性能的影响[J].天津大学学报(自然科学与工程技术版),2009,42(6):502-506. |
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| 作者姓名： | 张占伟 李午申 薛振奎 白世武 |
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| 作者单位： | 张占伟,李午申,ZHANG Zhan-wei,LI Wu-shen(天津大学材料科学与工程学院,天津,300072);薛振奎,白世武,XUE Zhen-kui,BAI Shi-wu(中国石油天然气管道科学研究院,廊坊,065000)
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 通过向BaF2-Al-Mg渣系自保护药芯焊丝药芯中加入稀土氧化物CeO2，研究了CeO2对该渣系自保护药芯焊丝焊接工艺及熔敷金属低温冲击韧性的影响．研究表明，用适量CeO2代替传统使用的MgO、Al2O3加入到药芯中，经冶金反应生成铈铝复合氧化物CeAlO3，能够有效调整熔渣的物化性能，减小焊接飞溅，改善熔渣覆盖和脱渣性；更为重要的是，以CeO2代替MgO、Al2O3造渣，降低了熔敷金属中大尺寸AIN、MgO·Al2O3等脆性夹杂物的含量，从而提高并稳定了自保护药芯焊丝熔敷金属的低温冲击韧性．
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| 关 键 词： | 自保护药芯焊丝 CeO2 夹杂物 低温冲击韧性 |
Effect of CeO2 Additions on Properties of Self-Shielded Flux Cored Wire |
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| ZHANG Zhan-wei,LI Wu-shen,XUE Zhen-kui,BAI Shi-wu.Effect of CeO2 Additions on Properties of Self-Shielded Flux Cored Wire[J].Journal of Tianjin University(Science and Technology),2009,42(6):502-506. |
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| Authors: | ZHANG Zhan-wei LI Wu-shen XUE Zhen-kui BAI Shi-wu |
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| Affiliation: | ZHANG Zhan-wei, LI Wu-shen, XUE Zhen-kui, BAI Shi-wu (1. School of Materials Science and Engineering,Yianjin University,Tianjin 300072 ,China; 2. Research Institute of China Petroleum Pipeline Bureau,Langfang 065000,China) |
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| Abstract: | The effect of CeO2 on operating performance of the self-shielded flux cored wire with BaF2-Al-Mg slag system and low temperature impact toughness of deposited metal were studied by adding CeO2 addition to the flux core of selfshielded flux cored wire in the system. The results show that, with CeO2 addition in flux core, Ce-Al composite oxide CeAlO3 is generated during welding. Compared with Al2O3 and/or MgO, which are commonly used as salgging agents, CeAlO3 can adjust the physicochemical properties of the molten slag more efficiently. The operating performance in the aspect of spatters, slag covering and peelability are improved. Moreover, using CeO2 instead of Al2O3 or MgO as the salgging agent, the amount of large dimension inclusions, such as AlN, MgO · Al2O3 is decreased. As a result, the low temperature impact toughness of the deposited metal is improved and stabilized. |
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| Keywords: | CeO2 |
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