| Q235钢表面等离子喷焊钴基自熔性高温合金工艺分析 |
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| 引用本文： | 赵洪运,田泽,贺文雄,张连旭.Q235钢表面等离子喷焊钴基自熔性高温合金工艺分析[J].焊接学报,2017,38(2):47-50,56. |
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| 作者姓名： | 赵洪运 田泽 贺文雄 张连旭 |
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| 作者单位： | 1.哈尔滨工业大学(威海) 山东省特种焊接实验室, 威海 264209 |
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| 摘 要： | 从模具、冶金行业机械设备的破坏实例发现，提高工件的耐磨、耐蚀性能是提高其寿命的重要途径之一，表面喷焊耐磨层是现阶段的研究重点.文中采用等离子喷焊工艺进行正交试验，在Q235钢表面制备了钴基自熔性高温合金耐磨层，并探究了喷焊层质能量与稀释率之间的关系.采用极差分析法探究焊接电流、喷焊速度和送粉流量三个典型喷焊工艺参数对喷焊层硬度、耐磨性和稀释率的影响规律，并对喷焊工艺进行优化.结果表明，优化后的最佳喷焊工艺为喷焊电流60 A，送粉流量23.5 g/min，喷焊速度80 mm/min.
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| 关 键 词： | 等离子喷焊 工艺优化 表面性能 |
| 收稿时间： | 2015/1/18 0:00:00 |
Process research of Co-based coating on Q235 steel by PTAW |
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| ZHAO Hongyun,TIAN Ze,HE Wenxiong and ZHANG Lianxu.Process research of Co-based coating on Q235 steel by PTAW[J].Transactions of The China Welding Institution,2017,38(2):47-50,56. |
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| Authors: | ZHAO Hongyun TIAN Ze HE Wenxiong and ZHANG Lianxu |
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| Affiliation: | 1.Shandong Provincial Key Laboratory of Welding and Joining, Harbin Institute of Technology, Weihai 264209, China2.Dongfeng Motor Company, Manufacturing Technology Department of Dongfeng Nissan Passenger Vehicle Company Headquarters, Guang Zhou 510800, China |
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| Abstract: | It can be found that improving the wear and corrosion resistance properties of workpiece is one of the most important methods to enhance its life in terms of the damages of mechanical equipment in die industry and metallurgy. The PTAW deposited resistance overlays is the key direction at present. In present paper, the Co-based self-fluxed high-temperature alloy coatings were fabricated with the method of orthogonal experiment by using PTAW process, the relationship between the mass energy and the dilution rate is discussed. The influence of process parameters on deposited overlays. The influence of three parameters welding current, welding speed and feeding rate on hardness, wear resistance and dilution rate of the coatings was explored in detail. Optimal parameters for wear resistance coating is given as below:spray current is 60 A, powder flow is 23.5 g/min and welding speed is 80 mm/min. |
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| Keywords: | PTAW process optimization surface properties |
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