A Study of Suitable Parameters for Cutting Mild Steel by Using Plasma Machine
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Abstract
This article described the cutting process for SS400 steel which is a majority structural steel for using in construction work such as building construction bridge construction and automotive industry. This paper focuses on the cutting steel of SS400 using Thermatech model TM1634 and the variable considering in this paper consisted of 1) Air pressure 2) the gap distance between the couple of cutting head and 3) cutting speed. The dimension of the test object is 50 x 50 x 50 mm in term of width length and thickness respectively. In addition, the current and average of roughness of surface (Ra) are determined. For the experimental method, this paper using Orthogonal Array algorithm based on Taguchi method. The experimental results, the deserving values forecasting in term of smaller-the-better can be shown that the cutting steel of SS400 by using Thermatech plasma cutting machine model TM1634 with 5 bar pressure and 35 mm gap distance and 150 mm/s cutting speed is delivered the current is 20.98 A. Moreover, the average of roughness of surface (Ra) is 9.76 with 5 bar air pressure and 40 mm gap distance and 250 mm/s cutting speed.
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References
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