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논문 기본 정보

자료유형
학술저널
저자정보
이재인 (창원대학교) 고병수 (창원대학교) 이준엽 (창원대학교) 유인근 (창원대학교) 문일우 (한토커팅시스템) 문도영 (한토커팅시스템) 박민원 (창원대학교)
저널정보
Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering Vol.40 No.1
발행연도
2023.1
수록면
79 - 86 (8page)
DOI
10.7736/JKSPE.022.090

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In this paper, the relationship between various physical and chemical dynamics included in a gas cutting process was analyzed and a mathematical model was presented. To express the gas cutting process in a formula that could reflect the physics and chemical reaction dynamics, the entire process was classified into three stages: flame spurt, metal oxidation, and metal oxide melting. Flame spurt is caused by combustion of fuel gas and oxygen. It was modeled through fluid dynamics, chemical species transport, and reaction kinetics. Metal oxidation was modeled as a chemical reaction of surface oxidation and oxide growth based on temperature and concentration of species of the metal surface obtained through flame and cutting oxygen spurt results. Finally, the melting of metal oxide was expressed as a rate equation based on melting conditions, heat flux obtained in the previous two stages, and changed properties of the metal. The presented mathematical model could analyze dynamic relationships for each stage of a gas cutting process and connect them into one process. Results of this study can be used as basic data for future finite element analysis and simulations.

목차

1. Introduction
2. Gas Cutting Process
3. Mathematical Modeling of the Gas Cutting
4. Interrelationship of the Gas Cutting Mathematical Model
5. Conclusion
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