| REN Zhi-qiang,WANG Zhi-qian,WANG Xiao-ming,ZHANG Yao,ZHU Sheng.Process Optimization of Depositing Formation Remanufacturing of Laser-TIG Hybrid Welding on Magnesium Alloy[J],45(9):220-227 |
| Process Optimization of Depositing Formation Remanufacturing of Laser-TIG Hybrid Welding on Magnesium Alloy |
| Received:March 22, 2016 Revised:September 20, 2016 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2016.09.033 |
| KeyWord:laser-TIG hybrid welding process parameters surface morphology depositing layer size, remanufacturing |
| Author | Institution |
| REN Zhi-qiang |
Academy of Armored Force Engineering , Beijing , China |
| WANG Zhi-qian |
Academy of Armored Force Engineering , Beijing , China |
| WANG Xiao-ming |
Academy of Armored Force Engineering , Beijing , China |
| ZHANG Yao |
Academy of Armored Force Engineering , Beijing , China |
| ZHU Sheng |
Academy of Armored Force Engineering , Beijing , China |
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| Abstract: |
| Objective To repair the surface and volume damages on parts of magnesium alloy, laser-TIG hybrid welding is used. Through optimizing process parameters, the depositing layer with good microstructure and properties and less defects are welded and the corresponding optimized repairing plan is formed, which provides support for surface and volume damages on magnesium alloys repairing. Methods Depositing layer on ZM5 magnesium alloy was welded by laser-TIG hybrid welding. By adjusting the wire feed rate, welding current, welding rate and laser power, the influence of process parameters on the formability and size of the depositing layer was explored. Results The smaller wire feed rate was, the smoother the depositing layer would be; and the penetration and width of the depositing layer were larger. When the welding current exceeded 105 A, the strength and welding effect of laser-TIG hybrid welding were the best. The welding rate had a great impact on the depositing layer size. With increase of weld feed rate, the depositing layer would become thinner, narrower and smaller. When the laser power was increased to 400 W, the heat input would be improved and the ability of depositing layer spread would be enhanced. Conclusion Taking the above all into consideration, in order to obtain the depositing layer with good formability and larger size, the welding rate and depositing layer feed rate should be taken at 5 mm/s and 23 mm/s, and laser power should be taken between 400 W to 500 W, and the welding current should arrive at between 120 A and 140 A. |
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