脉冲超声辅助GMAW电弧和金属传递特性

IF 2.2 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Welding Journal Pub Date : 2020-07-01 DOI:10.29391/2020.99.019

Chao Chen, C. Fan, X. Cai, Zeng Liu, Sanbao Lin, Chunli Yang

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引用次数: 4

摘要

脉冲超声辅助气体金属电弧焊是一种新兴的焊接方法。脉冲频率是PUGMAW过程中最重要的参数之一。本文研究了脉冲频率对铝合金GMAW的影响。结果表明，加入不同的脉冲频率，可以明显改善传统的GMAW工艺。当脉冲频率为1 ~ 10 Hz时，得到脉冲弧长，即弧长随脉冲频率的变化。当脉冲频率超过20 Hz时，获得了稳定的压缩弧长。与常规GMAW相比，PU-GMAW中的金属转移频率增加。PU-GMAW燃烧弧空间压力的增大是引起弧长变化的主要原因。电磁力和声辐射力的增加是液滴频率增加的根本原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Characteristics of Arc and Metal Transfer in Pulsed Ultrasonic-Assisted GMAW

Pulsed ultrasonic-assisted gas metal arc welding (PUGMAW) is a newly developed welding method. Pulsed frequency is one of the most important parameters in the PUGMAW process. In this paper, the influence of pulsed frequency on the GMAW of aluminum alloy was studied. The results showed that the conventional GMAW process was improved significantly by adding different pulsed frequencies. The pulsed arc length, which was the change of arc length with the change of pulsed frequency, was obtained when the pulsed frequency ranged from 1 to 10 Hz. The stable compression arc length was obtained when the pulsed frequency exceeded 20 Hz. The metal transfer frequency in PU-GMAW increased compared to conventional GMAW. The increase of burning arc space pressure in PU-GMAW was mainly the reason for the change of the arc length. The increase in electromagnetic force and acoustic radiation force was the fundamental reason for the increase in droplet frequency.

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来源期刊

Welding Journal 工程技术-冶金工程

CiteScore

3.00

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： The Welding Journal has been published continually since 1922 — an unmatched link to all issues and advancements concerning metal fabrication and construction. Each month the Welding Journal delivers news of the welding and metal fabricating industry. Stay informed on the latest products, trends, technology and events via in-depth articles, full-color photos and illustrations, and timely, cost-saving advice. Also featured are articles and supplements on related activities, such as testing and inspection, maintenance and repair, design, training, personal safety, and brazing and soldering.