Analysis of Demagnetization Characteristics of X70 Steel Based on Permanent Magnet Demagnetization Method

DOI

10.2991/978-94-6463-022-0_23How to use a DOI?

Keywords

remanence; X70 steel; Maxwell; response surface methodology; demagnetization rate

Abstract

High steel pipelines will generate remanence during work, transportation, inspection, and maintenance. Due to the existence of residual magnetism, high steel pipelines will have magnetic bias during the welding process, resulting in difficulty in pipeline welding, deterioration of welding quality, and even inability to weld the pipeline. In order to eliminate the residual magnetism in the pipeline as much as possible, the X70 steel pipeline is taken as the research object. Based on Maxwell simulation software, the X70 steel pipeline magnetization and dynamic permanent magnet demagnetization simulation model of X70 steel pipeline are established, and the X70 steel pipeline is magnetized and demagnetized respectively. Taking the magnetic field strength and demagnetization speed of the X70 steel pipeline dynamic permanent magnet demagnetization simulation model as variables, the demagnetization rate of the X70 steel pipeline under different magnetic field strength and demagnetization speed is obtained. Based on the response surface method optimization, the response surface method prediction model is established, and the simulation data is imported into the response surface method prediction model. The magnetic field intensity and demagnetization speed of the X70 steel pipeline dynamic permanent magnet demagnetization simulation model are optimized. It is concluded that the demagnetization effect of X70 steel pipeline is best when the demagnetization speed is 1.0 m/s and the magnetic field intensity is 200000 A/m, and the demagnetization rate can reach 70.73%. The research results can provide a theoretical basis for the permanent magnet demagnetization method of X70 steel pipeline.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Fulin Song
AU  - Hong Zhao
PY  - 2022
DA  - 2022/12/07
TI  - Analysis of Demagnetization Characteristics of X70 Steel Based on Permanent Magnet Demagnetization Method
BT  - Proceedings of the International Conference of Fluid Power and Mechatronic Control Engineering (ICFPMCE 2022)
PB  - Atlantis Press
SP  - 262
EP  - 272
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-022-0_23
DO  - 10.2991/978-94-6463-022-0_23
ID  - Song2022
ER  -