Numerical Simulation of Arc Characteristics of Symmetric and Asymmetric Flat Tungsten Electrodes

IF 1.3 4区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

IEEE Transactions on Plasma Science Pub Date : 2023-07-04 DOI:10.1109/TPS.2023.3289886

Tao Ye;Yuan-Bo Li

引用次数: 0

Abstract

Tungsten inert gas (TIG) welding with flat tungsten electrode can effectively reduce the arc pressure distribution, restrain welding defects, and improve the welding speed of thin plate. In this article, the arc characteristics of symmetric and asymmetric flat tungsten electrodes are studied by selecting different tip angles and tilt angles of flat tungsten electrodes. The temperature variation, current density variation, flow field variation, and pressure variation of flat tungsten electrode arc are calculated. Based on the approximate formula of cathode jet intensity of flat tungsten arc, the variation laws of various physical fields are clarified from the perspective of flow.

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对称和非对称钨电极电弧特性的数值模拟

采用钨平电极进行钨惰性气体(TIG)焊接，可有效降低电弧压力分布，抑制焊接缺陷，提高薄板焊接速度。本文通过选择不同的尖端角度和倾斜角度，研究了对称和非对称钨平电极的电弧特性。计算了钨平电极电弧的温度变化、电流密度变化、流场变化和压力变化。基于钨平电弧阴极射流强度的近似公式，从流动的角度阐明了各种物理场的变化规律。

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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来源期刊

IEEE Transactions on Plasma Science 物理-物理：流体与等离子体

CiteScore

3.00

自引率

20.00%

发文量

538

审稿时长

3.8 months

期刊介绍： The scope covers all aspects of the theory and application of plasma science. It includes the following areas: magnetohydrodynamics; thermionics and plasma diodes; basic plasma phenomena; gaseous electronics; microwave/plasma interaction; electron, ion, and plasma sources; space plasmas; intense electron and ion beams; laser-plasma interactions; plasma diagnostics; plasma chemistry and processing; solid-state plasmas; plasma heating; plasma for controlled fusion research; high energy density plasmas; industrial/commercial applications of plasma physics; plasma waves and instabilities; and high power microwave and submillimeter wave generation.