Analisis pemotongan logam ST-37 dengan mesin potong menggunakan gas oxy-LPG

Tauvana, Ade Irvan; Widodo, Widodo

doi:10.24127/trb.v9i1.1142

Cited by 2 publications

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“…Semakin tebal plat baja maka kecepatan potong yang baik adalah semakin rendah [5]. Hasil pemotongan terbaik dan tidak ada cacat pada jarak pemotongan 2 mm dengan tekanan gas propane 0,2 kg/cm 2 ; tekanan kerja oksigen 2.5 kg/cm 2 [6].…”

Section: Pendahuluanunclassified

Analisa pengaruh jarak cutting torch terhadap permukaan berputar pada mesin pemotong kontur sambungan pipa

Akhyan

Salam

2022

Turbo

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Currently steel pipes are needed, especially in construction work. Construction with pipe materials cannot be separated from the process of joining and cutting. The cutting process for large pipes always uses a thermal cutting process. This study aims to determine how much influence the cutting distance has on the cutting results on a pipe that rotates at a constant 0.8 rpm following the shape of the corner joint contour. To achieve the objectives of this study, a pipe cutting tool with a diameter of 4 to 6 inches is needed with the thermal cutting method using the Oxy Acetylene Cutting (OAC) process This research data was obtained by cutting the 4inch pipe schedule 10s, schedule 20s and schedule 40s in a rotating condition and the cutting torch moves back and forth. The pipe rotates at 0.8 rpm using an AC motor transmitted using a gearbox connected to the wheel as a holder where the pipe rotates. The results of the cutting are in the form of a pipe connection contour with an angle of 900 and 600. As the independent variable in this study was set the cutting distance is 5mm, 7mm and 10 mm, while the fixed variables are determined by cutting speed 280 mm/minute, acetylene gas pressure 3.5 kg/cm2 and oxygen 17.5 kg/cm2. In order to get effective results, preheat the surface of the pipe with a gas fuel mixture until it reaches the melting temperature of the pipe as the main ingredient. The cutting results that meet the entire path of the pipe can be cut completely and through and there is very little splash or melt dirt during the cutting process. After cutting, the best results are obtained at a cutting distance of 5 mm both on schedule 10s, schedule 20s and schedule 40s.

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Section: Pendahuluanunclassified

Analisa pengaruh jarak cutting torch terhadap permukaan berputar pada mesin pemotong kontur sambungan pipa

Akhyan

Salam

2022

Turbo

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“…Sedangkan untuk tingkat kekasaran terbesar diperoleh dari kecepatan 725 mm.menit, dengan tingkat kekasaran senilai 1,851 mm/menit. Dalam penelitiannya, Tauvana dan Widodo [12] mengemukakan bahwa kecepatan potong semakin menurun seiring dengan meningkatnya ketebalan pelat. Dengan standar yang digunakan dalam pemotongan material (ST-37) pada penelitian Tauvana dan Widodo, serta proses pemotongan menggunakan perbandingan propan:oksigen 1:2, sumbu api luar berukuran 70-130 mm dan sumbu api dalam 4-7 mm serta tekanan gas Liquid Petroleum Gas dibuat konstan, didapatkan semakin tebal pelat yang akan dipotong, maka tekanan oksigen yang dibutuhkan semakin besar.…”

Section: Pendahuluanunclassified

Effect of Nozzle Tip’s Variation to The Duration and OXY-LPG Gas Consumptions Using Manual CuttingMethods in Shipyards

2022

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In maritime industry, especially shipbuilding in Indonesia, various of cutting processes are implemented, which one is Gas Manual Cutting. Generally, gas requirements and duration of plate cutting processes are calculated based on previous work experience. The use of different nozzle tips by the operator will affect to gas consumption and cutting duration in each process. The purpose of this study was to determine the effect of variations in the tip-nozzle size on the duration and OXY-LPG gas requirements in manual plate cutting. The research was conducted using an experimental-based research with linear regression analysis using the ANOVA method. Based on the results of data analysis, it can be known that the larger the diameter of the nozzle tip, the requirements for OXY-LPG gas will increase by following the equation 𝑌=0,1117𝜒+0,3533 for Oxygen and 𝑌=0,025𝜒+0,0489 for LPG. Meanwhile, the larger of nozzle tip diameter can cause a decrease in the cutting duration required by following the regression equation 𝑌=−28,603𝜒+293,01.

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Analisis pemotongan logam ST-37 dengan mesin potong menggunakan gas oxy-LPG

Cited by 2 publications

References 0 publications

Analisa pengaruh jarak cutting torch terhadap permukaan berputar pada mesin pemotong kontur sambungan pipa

Analisa pengaruh jarak cutting torch terhadap permukaan berputar pada mesin pemotong kontur sambungan pipa

Effect of Nozzle Tip’s Variation to The Duration and OXY-LPG Gas Consumptions Using Manual CuttingMethods in Shipyards

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