| Investigation on the deposition rate and the dilution ratio of plasma surface welding |
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| 作者姓名： | 王红英 赵昆 程志国 杨世彦 董祖珏 |
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| 作者单位： | 王红英(Shenzhen Polytechnic , Shenzhen, 518055);赵昆,程志国,董祖珏(Harbin Research Institute of Welding, Harbin, 150080);杨世彦(Harbin Institute of Technology, Harbin, 150001) |
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| 摘 要： | A new kind of plasma technology with both high deposition rate and low dilution ratio was developed under the calculation and analysis of the arc flame characteristics of plasma arc, the kinematics behavior of powder and powder‘ s heating in the arc. Compared with normal plasma surfacing method, the idea using constricting nozzle with small orifice diameter, long plasma arc and increasing the distance from meeting point of the two beams of powder to workpiece , to achieve the goals of high deposition rate and low dilution ratio, was put forward here. In order to prove this idea, a set of experimental system was built up and obtained satisfied results including high deposition rate( more than 25kg/h)and low dilution ratio(less than 5% ). The success of this study offers a promising prospect for developing the powder plasma surface welding in China and may open a way to improve this technology further in efftciency and quality.
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| 关 键 词： | 等离子弧焊 稀释比 沉积速率 表面处理 |
Investigation on the deposition rate and the dilution ratio of plasma surface welding |
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| Abstract: | A new kind of plasma technology with both high deposition rate and low dilution ratio was developed under the calculation and analysis of the arc flame characteristics of plasma arc,the kinematics behavior of powder and powder's heating in the arc. Compared with normal plasma surfacing method, the idea using constricting nozzle with small orifice diameter, long plasma arc and increasing the distance from meeting point of the two beams of powder to workpiece, to achieve the goals of high deposition rate and low dilution ratio, was put forward here. In order to prove this idea, a set of experimental system was built up and obtained satisfied results including high deposition rate(more than 25kg/h)and low dilution ratio(less than 5%). The success of this study offers a promising prospect for developing the powder plasma surface welding in China and may open a way to improve this technology further in efficiency and quality. |
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| Keywords: | plasma surface welding deposition rate dilution ratio |
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