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All Journal Jurnal Ilmiah Teknik (JUIT) Jurnal Teknik dan Science (JTS)
Christofel Jarot Yudaputranto
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Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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PROSES PEMBUATAN TABUNG GAS 12 KG MENGGUNAKAN MATERIAL JIS-SG 255 Christofel Jarot Yudaputranto; Supriyono Supriyono
Jurnal Ilmiah Teknik Vol. 3 No. 1 (2024): Januari : Jurnal Ilmiah Teknik
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/juit.v3i1.1191

Abstract

A gas cylinder is a container in the shape of a tube and is used to store gas produced from oil refineries. The manufacturing process goes through various processes and the selection of strong materials to withstand the gas pressure in the cylinder. The main materials used in making the 12 kg gas cylinder are JIS SG 255 and SPHC. The 12 kg tube was designed with a tube height of 750 mm and a diameter of 280 mm. The SMAW welding process was carried out for the circumference and GMAW welding for the handguard and footring. To determine the area and volume of the weld on the 12 kg gas cylinder, area and volume calculations were carried out, so that it can be seen that the surface area of the 12 kg gas cylinder is 30.772 mm2, while the weld volume of the tube is known to be 115.395 cm3. Then, after welding the gas cylinder, proceed with annealing to restore the condition of the tube after welding with gradual heat temperatures, namely 200°C, 600°C and 200°C with a time of ± 14 minutes. Leak testing on tubes is carried out with two types of tests, namely hydrostatic tests and leak tests, hydrostatic tests on tubes use 31 bar water pressure with a quality of 50%, while for this leak test the tube is given air to find out whether the gas cylinder has a leak or not with a quality of 100 %.
ANALISA KINERJA POMPA SENTRIFUGAL KAPAL KERUK Christofel Jarot Yudaputranto
Jurnal Teknik dan Science Vol. 3 No. 2 (2024): Juni : Jurnal Teknik dan Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/jts.v3i2.1533

Abstract

In general, a pump is a tool or machine that is used to move liquids from one place to another through a piping medium by adding energy to the fluid being moved and taking place continuously. Centrifugal force is the force that arises due to the movement of an object or particle through a curved (circular) path. Centrifugal force acts on the impeller to push the fluid to the outside so that the fluid velocity increases. In its application, a centrifugal pump is a pump that is very commonly used for pumping liquids in various industrial uses. One of them is a dredger used in the sludge dredging industry. From the pump data used, a study was carried out on the pumps used on the suction dredger to obtain pump power, head, capacity and energy efficient opportunities that can be achieved. From the results of the pump study, the following data were obtained: Efficiency (ɳ) : 70 %, Head (H) : 30 m, Capacity (Q) : 10300 ????3/ hour / 2,861 ????3/s, NPSH???? : 53.75 m, Pump power (P) : 5446.34 Kw
STUDI TERMAL PADA SEGMEN CETAKAN CROWN PADA MESIN CURING DALAM PROSES PRODUKSI BAN MOBIL DI PT. ELANG PERDANA TYRE INDUSTRY Christofel Jarot Yudaputranto; Sandy Suryady
Jurnal Ilmiah Teknik Vol. 4 No. 1 (2025): Januari : Jurnal Ilmiah Teknik
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/juit.v4i1.1839

Abstract

The curing process is a stage in car tire molding carried out under high temperature and pressure. One of the key components in this process is the crown mold segment, which functions to shape the tread pattern on the tire. This study aims to analyze the heat distribution in the crown mold segment using Solidworks software, focusing on material specifications, heat distribution patterns, and simulation parameters affecting the results. The material used is Steel AISI 1020. The simulation results indicate an even heat distribution with an initial temperature of 453 K, convection ranging from 179.933°C to 179.967°C on the side area, and 179.916°C to 179.950°C on the tread pattern. Heat transfer rates were recorded as 96,323.28 W through conduction, 898.452 W through convection, and 2.56 W through radiation. Key parameters influencing the simulation include the initial material temperature (453 K), convection coefficient (10 W/(m²·K)), radiation emissivity (0.3), and ambient temperature (300 K).
Co-Authors Sandy Suryady Supriyono Supriyono