| 摘要: |
| 采用全息干涉方法研究了不同TIG焊接参数对全息干涉条纹的影响规律，确定了全息干涉在TIG电弧分析中可用的焊接参数范围，同时，采用极差分析定量讨论了各焊接参数对全息干涉条纹的影响程度. 结果表明，在焊接电流不大于100 A，焊接弧长在4 ~ 14 mm范围内，保护气流量不大于6 L/min时，能够获得清晰的全息干涉条纹；随着焊接电流的增大，全息干板上形成的干涉条纹变粗；随着电弧长度逐渐增大，电弧条纹的密集程度逐渐减小. 极差分析可知焊接电流(R1)、焊接弧长(R2)和保护气体流量(R3)对全息干涉条纹钨极尖端附近的干涉条纹数量(N1)、近工件部分中心圆环横向直径(d1)与径向直径(d2)的影响程度顺序分别为R2 > R1 > R3，R2 > R3 > R1和R2 > R1 > R3. |
| 关键词: 全息干涉 TIG焊 电弧弧长 焊接电流 极差分析 |
| DOI：10.12073/j.hjxb.20190115004 |
| 分类号:TG457.14 |
| 基金项目:国家自然科学基金资助项目(51675130) |
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| Effect of welding parameters on holographic interferometric fringe in TIG |
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FAN Chenglei, CHEN Chao, LIN Sanbao, YANG Chunli, DI zhongju
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State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, China
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| Abstract: |
| The effect of welding current, welding arc length and gas flow rate on holographic interference fringe was investigated. During holographic interference test, the reasonable range of the welding parameters is presented, and the calculation of the holographic interferometric arc temperature field is enumerated. the results shown that when the welding current less than100 A, welding arc length 4 ~ 14 mm and protecting air flow less than 6 L/min, the clear of holographic interference fringes can be obtain. The influence degree of welding current (R1), welding arc length (R2) and the protection of gas flow (R3) on the number of interference fringes (N1) on the tungsten tip, the center of circle transverse diameter (d1) and that of the radial diameter (d2) are R2 > R1 > R3, R2 > R3 > R1 and R2 > R1 > R3. |
| Key words: holographic interferometric TIG Arc length plasma range analysis |
