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割炬等离子弧磁聚焦的实验分析

Experimental Analysis of Magnetic Focusing of the Plasma Arc of a Cutting Torch.

作者信息

Marek Martin, Brkić Dejan, Praks Pavel, Kozubek Tomáš, Frantík Jaroslav

机构信息

ENET Centre, VSB - Technical University of Ostrava, 70800 Ostrava, Czech Republic.

Department of Technical Studies, College of Polytechnics Jihlava, 58601 Jihlava, Czech Republic.

出版信息

Materials (Basel). 2025 Apr 15;18(8):1811. doi: 10.3390/ma18081811.

DOI:10.3390/ma18081811
PMID:40333479
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12028839/
Abstract

This study aimed to verify the possibility of stabilizing and focusing a plasma column generated by a plasma cutter. The simulation performed by the COMSOL Multiphysics software is based on the actual configuration and geometry of the burner. This article presented a universal computational method based on FEM simulations, focusing on the deflection of the current of electrically charged particles in a magnetic field within the context of a plasma cutting torch. The simulations estimate the optimal shape and positioning of a focused electron beam for various magnetic lens positions and plasma stream energies, revealing that higher initial electron energies lead to a more even beam focus. Among the configurations tested, positioning the cathode 3 mm above the ring-shaped permanent magnet proved most effective, maintaining beam linearity and minimizing electron scattering, making it suitable for practical implementations.

摘要

本研究旨在验证稳定和聚焦由等离子切割机产生的等离子体柱的可能性。由COMSOL Multiphysics软件进行的模拟是基于燃烧器的实际配置和几何形状。本文提出了一种基于有限元模拟的通用计算方法，重点研究了等离子切割炬中带电粒子电流在磁场中的偏转情况。模拟估计了各种磁透镜位置和等离子体流能量下聚焦电子束的最佳形状和位置，结果表明，较高的初始电子能量会使束聚焦更加均匀。在所测试的配置中，将阴极置于环形永久磁铁上方3毫米处被证明是最有效的，它能保持束的线性并使电子散射最小化，适用于实际应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/786e3a34769a/materials-18-01811-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/70acf9ba7cae/materials-18-01811-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/46304132c34c/materials-18-01811-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/35713de1ce68/materials-18-01811-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/a7356ae62813/materials-18-01811-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/47ad9d4b2428/materials-18-01811-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/fd495d97b84f/materials-18-01811-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/2bc3a92bbe90/materials-18-01811-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/030c0072affd/materials-18-01811-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/786e3a34769a/materials-18-01811-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/70acf9ba7cae/materials-18-01811-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/46304132c34c/materials-18-01811-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/35713de1ce68/materials-18-01811-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/a7356ae62813/materials-18-01811-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/47ad9d4b2428/materials-18-01811-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/fd495d97b84f/materials-18-01811-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/2bc3a92bbe90/materials-18-01811-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/030c0072affd/materials-18-01811-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc27/12028839/786e3a34769a/materials-18-01811-g009a.jpg

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