Models of thermal plasma in welding and surface processing. Part I
Jacek Rońda
AGH University of Science and Technology, al. Adama Mickiewicza 30, 30-059 Kraków.
DOI:
https://doi.org/10.7494/cmms.2002.2.0026
Abstract:
The intensity of a heat flux transmitted from ionized gas through a liquid metal to a heat affected zone decides about the quality of a weld joint or the integrity of surface layers in plasma surface processing. Following that, the numerical simulation of a weld joint with the required quality should be based on the enhanced model of a heat transmission from the plasma to the heat affected zone through all intermediate regions. The complex model should contain the sub-model of the electric arc with sheaths, the sub-model of a liquid metal motion in the electromagnetic field, and the sub-model of the coupled thermo-mechano-metallurgical processes in the heat affected zone. Additionally, in plasma spraying, the transportation of an injected powder particles or a gas contributing to a surface coating and their impact (or impingement) on the processed surface should be included in the process complex model. The energy transmission is associated by many processes occurring in the ionized gas and related to the thermodynamics of reacting gases, fluid electrodynamics and micro-metallurgy
Cite as:
Rońda, J. (2002). Models of thermal plasma in welding and surface processing. Part I. Computer Methods in Materials Science, 2(2-3), 81 – 97. https://doi.org/10.7494/cmms.2002.2.0026
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