| 碳钢高速电弧喷涂的电弧特征及材料过渡行为 |
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| 引用本文： | 陈永雄,梁秀兵,张志彬,商俊超.碳钢高速电弧喷涂的电弧特征及材料过渡行为[J].焊接学报,2013(9):17-20. |
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| 作者姓名： | 陈永雄 梁秀兵 张志彬 商俊超 |
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| 作者单位： | 装甲兵工程学院机械产品再制造国家工程研究中心, 北京 100072,装甲兵工程学院机械产品再制造国家工程研究中心, 北京 100072,装甲兵工程学院机械产品再制造国家工程研究中心, 北京 100072,装甲兵工程学院机械产品再制造国家工程研究中心, 北京 100072 |
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| 基金项目： | 国家自然科学基金资助项目(51105377);装备预研基金资助项目(9140C850205120C8501);北京市优秀博士学位论文指导教师科研资助项目(20129003401) |
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| 摘 要： | 高速电弧喷涂过程中两根丝材交汇处电弧的形成、丝材受热熔化与熔滴过渡等过程具有高度动态性,直接影响喷涂涂层的组织与性能.使用Hispec 5高速摄像机观测了高速电弧喷涂碳钢丝材时弧区的动态冶金过程.发现喷涂过程中阴极上的电弧收缩,阳极上的电弧发散;而且电弧的燃烧是不连续的,不断经历引弧、燃弧、熄弧、再引弧的循环过程.电弧的这些特点导致了阴、阳极丝材的非对称加热和熔化,并且熔化金属脱离丝材形成熔滴的雾化形式、大小等特征差异显著.基于高速摄像的试验结果,系统分析了喷涂过程中电弧和熔滴的形成与过渡机理.
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| 关 键 词： | 高速电弧喷涂 碳钢丝材 电弧 动态冶金 |
| 收稿时间： | 2012/7/3 0:00:00 |
Arc characteristic and metal transfer behavior during high velocity arc spraying of carbon steel |
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| CHEN Yongxiong,LIANG Xiubing,ZHANG Zhibing and SHANG Junchao.Arc characteristic and metal transfer behavior during high velocity arc spraying of carbon steel[J].Transactions of The China Welding Institution,2013(9):17-20. |
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| Authors: | CHEN Yongxiong LIANG Xiubing ZHANG Zhibing and SHANG Junchao |
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| Affiliation: | NationalEngineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China,NationalEngineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China,NationalEngineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China and NationalEngineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China |
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| Abstract: | During electric arc spraying,the highly dynamic interaction between two metal wires,while starting arc, melting wires and transferring droplets,directly affects the microstructure and properties of the spraying coating.In this paper,a Hispec 5 type high speed imaging system was used to investigate the dynamic metallurgic process of electric arc spraying carbon steel wires.The results showed that the arc constricted on the cathode but diverged on the anode.The arc burning was not continuous by repeating the process of ignition,burning,extinguishing and ignition again during the whole spraying process.Consequently, asymmetric heating and melting occurred to the two wires.The detachment of the two melted wires to form droplets was therefore apparently different from each other.The mechanisms of arc formation and droplet transfer were discussed based on the high speed imaging results. |
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| Keywords: | high velocity electric arc spraying carbon steel wire electric arc dynamic metallurgy |
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