Modeling of Electrothermal Coupling and Analysis of Arc Heating Mechanism of 6061Al in Electric Pulse Rolling

YAN Zhihang; WANG Wenxian; BIAN Gongbo; ZHANG Han; ZHANG Tingting

doi:10.7512/j.issn.1001-2303.2024.03.04

Important Issuse | Views : 0 下载量: 868 CSCD: 0

PDF
Export
Share
Collection
Album

Modeling of Electrothermal Coupling and Analysis of Arc Heating Mechanism of 6061Al in Electric Pulse Rolling
Vol. 54, Issue 3, Pages: 24-29(2024)
Received：12 April 2023，

Revised：2024-01-21，

Published：25 March 2024
DOI： 10.7512/j.issn.1001-2303.2024.03.04
稿件说明：

移动端阅览

闫志航，王文先，卞功波，等.电脉冲轧制6061Al电热耦合模型及电弧加热机理分析［J］.电焊机，2024，54（3）：24-29. DOI： 10.7512/j.issn.1001-2303.2024.03.04.

YAN Zhihang, WANG Wenxian, BIAN Gongbo, et al.Modeling of Electrothermal Coupling and Analysis of Arc Heating Mechanism of 6061Al in Electric Pulse Rolling[J].Electric Welding Machine, 2024, 54(3): 24-29. DOI： 10.7512/j.issn.1001-2303.2024.03.04.

摘要

通过COMSOL Multiphysics仿真软件模拟高频脉冲电流激励时两板间界面处电弧的产生。讨论了在高频脉冲电流激励下，两块具有一定角度的金属板在电脉冲辅助轧制过程中界面处产生电弧的条件，并结合电磁学分析了电弧的形成机理。结果表明，在电脉冲辅助轧制过程中，除了焦耳加热外，还存在电弧加热现象，当加载300 A电流和10 kHz频率时，可以产生电弧并使两块铝板结合形成焊点。随着电流的增加，电弧温度和电势差也相应增加。在800 A电流下，电弧温度可达4 210 K，电势差可达54.5 V，已达到电弧形成的条件，但产生的电弧并不稳定。电弧的存在不仅瞬间加热了板材，提高了界面结合强度，而且在电弧力的作用下更容易形成波纹界面。模拟结果显示，加载800 A电流下可以产生超过4 000 K的电弧，并且在第一个脉冲周期内形成；并拟合了电弧产生的热源方程；为电脉冲辅助轧制研究提供了新思路。

Abstract

In this article

the COMSOL Multiphysics simulation software is used to simulate the generation of arcs in a circuit when excited by a high-frequency pulsed current. Under the excitation of high-frequency pulse current

the conditions of arc generation near the surface tip of two metal plates with a certain angle and rough surface are discussed

and the formation mechanism of the arc is analyzed combined with electromagnetics. The results show that in the electric pulse-assisted rolling process

in addition to Joule heating

there is also the phenomenon of arc heating

which can generate an arc and cause two aluminum plates to combine to form a welded joint when loaded with a current of 300 A and a frequency of 10 kHz. As the current increases

the arc temperature and potential difference increase accordingly. At a current of 800 A

the arc temperature is 4 210 K and the potential difference is 54.5 V. The conditions for arc formation have been met

but the resulting arc is not stable.When loaded at 800 A

an arc of over 4 000 K can be generated and a welded joint formed within the first pulse cycle

and the heat source equation for arc generation is fitted.

关键词

Keywords

references

Roh J H ， Seo J J ， Hong S T ， et al . The mechanical behavior of 5052-H32 aluminum alloys under a pulsed electric current ［J］. International Journal of Plasticity ， 2014 ， 58 ： 84 - 99 .

Wang X ， Xu J ， Shan D ， et al . Modeling of thermal and mechanical behavior of a magnesium alloy AZ31 during electrically-assisted micro-tension ［J］. International Journal of Plasticity ， 2016 ， 85 ： 230 - 257 .

Ren X W ， Wang Z J ， Fang X ， et al . The plastic flow model in the healing process of internal microcracks in pre-deformed TC4 sheet by pulse current ［J］. Materials & Design ， 2020 ， 188 ： 108428 .

Rahnama A ， Qin R . Room temperature texturing of austenite/ferrite steel by electropulsing ［J］. Scientific Reports ， 2017 ， 7 ： 42732 .

Zhang X ， Li H ， Zhan M ， et al . Extraordinary effect of the δ phase on the electrically-assisted deformation responses of a Ni-based superalloy ［J］. Materials Characterization ， 2018 ， 144 ： 597 - 604 .

Li D ， Yu E ， Liu Z . Microscopic mechanism and numerical calculation of electroplastic effect on metal's flow stress ［J］. Materials Science and Engineering： A ， 2013 ， 580 ： 410 - 413 .

Zhang X ， Li H ， Zhan M ， et al . Electron force-induced dislocations annihilation and regeneration of a superalloy through electrical in-situ transmission electron microscopy observations ［J］. Journal of Materials Science & Technology ， 2020 ， 36 ： 79 - 83 .

Molotskii M ， Fleurov V V . Magnetic effects in electroplasticity of metals ［J］. Phys Rev B Condens Matter ， 1995 ， 52 （ 22 ）： 15829 - 15834 .

Kim M J ， Yoon S ， Park S ， et al . Elucidating the origin of electroplasticity in metallic materials ［J］. Applied Materials Today ， 2020 ， 21 ： 100874 .

Yang X D ， Li X H ， Li Q . Discharge crater formation simulation coupled by thermo-fluid analysis of arc plasma in EDM ［J］. Procedia CIRP ， 2020 ， 95 ： 232 - 237 .

Guan C ， Ding J ， Yao X ， et al . Study on Short-circuit current interruption characteristics of Double-break fast vacuum circuit breaker within the minimum arcing time ［J］. International Journal of Electrical Power & Energy Systems ， 2023 ， 147 ： 108865 .

Wu H ， Chang Y ， Guan Z ， et al . Arc shape and microstructural analysis of TIG welding with an alternating cusp-shaped magnetic field ［J］. Journal of Materials Processing Technology ， 2021 ， 289 ： 116912 .

Wang B ， Zhu D ， Ding R ， et al . Simulation of arc crater formation and evolution on plasma facing materials ［J］. Nuclear Materials and Energy ， 2021 ， 27 ： 100964 .

Zhao S ， Zhang C ， Zhang Y ， et al . Influence of Partial Arc on Electric Field Distribution of Insulator Strings for Electrified Railway Catenary ［J］. Energies ， 2019 ， 12 （ 17 ）， 3295 .

Alert me when the article has been cited

提交

Analysis of high-frequency pulse TIG welding electric signal and temperature field of 7N01 aluminum alloy

Development and Performance Evaluation of a 550 MPa-Grade Low-Hydrogen, High-Toughness Flux-Cored Wire for All-Position Welding

Influence of Rare Earth Pr on Microstructure and Properties of Weld Deposited Metal of 800 MPa Grade High-Strength Steel

Microstructure and Mechanical Properties of CMT-Welded X80 Pipeline Steel Joints

Analysis of Process, Microstructure and Properties of Gas Metal Arc Welding with Rutile Flux-cored Wire for EH40 Steel