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http://dx.doi.org/10.7837/kosomes.2022.28.4.639

Greenhouse Gas Reduction and Marine Steel Plate Tensile Properties When Using Propylene Flame in the Cutting Process  

Kim, Do Hyeon (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Kim, Dong Uk (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Seo, Hyoung-Seock (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.28, no.4, 2022 , pp. 639-647 More about this Journal
Abstract
The use of flames is essential in cutting, bending, and welding steel during a ship's construction process. While acetylene fuel is commonly used in steel cutting and the manufacturing process in shipyards, the use of propane as an alternative fuel has recently been increasing, due to the lower risk of explosion and propane's relatively low calorific value. However, propane fuel has a relatively slow processing speed and high slag generation frequency, thereby resulting in poor quality. Propylene is another alternative fuel, which has an excellent calorific value. It is expected to gain wider use because of its potential to improve the quality, productivity, and efficiency of steel processing. In this study, the combustion characteristics of propane and propylene fuel during steel plate processing were analyzed and compared. The reduction of greenhouse gases and other harmful gases when using propylene flame was experimentally verified by analyzing the gases emitted during the process. Heat distribution and tensile tests were also performed to investigate the effects of heat input, according to processing fuel used, on the mechanical strength of the marine steel. The results showed that when propylene was used, the temperature was more evenly distributed than when propane fuel was used. Moreover, the mechanical tests showed that when using propylene, there was no decrease in tensile strength, but the strain showed a tendency to decrease. Based on the study results, it is recommended that propylene be used in steel processing and the cutting process in actual shipyards in the future. Additionally, more analysis and supplementary research should be conducted on problems that may occur.
Keywords
Greenhouse gas reduction; Propane flame; Propylene flame; Heat transfer characteristic; Tensile property;
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Times Cited By KSCI : 1  (Citation Analysis)
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