水下焊接参数相关性分析及其电弧稳定性研究

摘要/Abstract

摘要：

摘要：在高压舱内进行了不同水深的水下湿法药芯焊丝焊接（FCAW）试验，以电弧电压差异系数的倒数作为衡量电弧稳定性的指标，分析了不同水深条件下电弧电压与焊接电流之间的相关性对电弧稳定性的影响，并从送丝熔化系统的角度探讨了电压与电流的相关性对电弧稳定性的影响规律；利用二次函数拟合电弧稳定性指标与电弧电压之间的关系，得到最佳的电压与电流关系.结果表明：最佳的水下湿法FCAW的电压与电流关系曲线呈上升的变化特性，随着水深增加，FCAW需要更高的电弧电压；水下湿法FCAW的电弧稳定性取决于电压与电流的相关性，而并非简单地随着水深的增加而下降；水深对电弧稳定性的影响主要表现在电压与电流相关性的不同；随着水深增加，相同焊接电流所需的电弧电压相应地增大.

关键词: 水下焊接, 水深, 相关性分析, 电弧稳定性

Abstract:

Abstract： Underwater wet fluxcored arc welding (FCAW) experiments were conducted in a hyperbaric chamber which was used to simulate different water depths. Relative standard deviation reciprocals of arc voltage were used as an index of welding arc stability. The influences of correlations between arc voltage and welding current at different water depths on arc stability were analyzed. From the point of view of the wire feeding  melting system, the influences of voltage and current correlations on arc stability were analyzed. The correlations of arc stability and arc voltage were numerically fitted by a second order function and then the optimal correlations of arc voltage and welding current were obtained. The results show that the optimal correlation curves of arc voltage and welding current for underwater wet welding are a series of ascending curves, which go upward with the increase in water depth. The arc stability depends on the correlations of arc voltage and welding current, and does not simply decline with the increase in water depth. The arc voltage corresponding to a single welding current of underwater wet welding should be increased as the water depth increases.
Key words：

Key words: underwater welding, water depth, correlation analysis, arc stability

中图分类号:

TG 456.5

石永华,李志辉，林水强,郑泽培. 水下焊接参数相关性分析及其电弧稳定性研究[J]. 上海交通大学学报（自然版）, 2015, 49(01): 74-79.

SHI Yonghua,LI Zhihui,LIN Shuiqiang,ZHENG Zepei. Correlation Analysis of Process Parameters and Arc Stability of Underwater Welding[J]. Journal of Shanghai Jiaotong University, 2015, 49(01): 74-79.

参考文献

［1］Rowe M, Liu S. Recent developments in underwater wet welding ［J］. Science and Technology of Welding and Joining, 2001, 6 (6): 387396.

［2］Hart P, Richardson I M, Nixon J H. The effects of pressure on electrical performance and weld bead geometry in high pressure GMA welding ［J］. Welding in the World, 2001, 45(1112): 2533.

［3］Azara A S, Woodwardb N, Fostervollc H, et al. Statistical analysis of the arc behavior in dry hyperbaric GMA welding from 1 to 250 bar ［J］. Journal of Materials Processing Technology, 2012, 212(1): 211 219.

［4］蒋力培，王中辉，焦向东，等. 水下焊接高压空气中环境下GTAW电弧特性［J］. 焊接学报，2007, 28(6): 14.

JIANG Lipei, WANG Zhonghui, JIAO Xiangdong, et al. Characteristics of GTAW arc in underwater welding under highpressure air condition ［J］. Transactions of the China Welding Institution, 2007, 28(6): 14.

［5］王飞，华学明，马晓丽，等. CO2气体保护药芯焊丝双丝焊接电信号稳定性分析［J］. 上海交通大学学报, 2010, 44(4): 457462.

WANG Fei, HUA Xueming, MA Xiaoli, et al. Stability analysis of electrical signal in CO2 fluxcored double wire GMAW ［J］. Journal of Shanghai Jiaotong University, 2010, 44(4): 457462.

［6］Mazzaferro J A E, Machado I G. Study of arc stability in underwater shielded metal arc welding at shallow depths ［J］. Proceedings of the Institution of Mechanical Engineers. Part C: Journal of Mechanical Engineering Science, 2009, 233(3): 699709.

［7］石永华, 郑泽培, 黄晋. 水下湿法药芯焊丝焊接电弧稳定性［J］. 焊接学报, 2012, 33(10): 4953.

SHI Yonghua, ZHENG Zepei, HUANG Jin. Arc stability of underwater wet fluxcored arc welding［J］. Transactions of the China Welding Institution, 2012, 33(10): 4953.

［8］Nie J. Study on evaluation method of aluminum alloy pulse MIG welding stability based on arc voltage probability density ［J］. Journal of Signal and Information Processing, 2011, 2(3): 159164.

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