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All Journal Turbo : Jurnal Program Studi Teknik Mesin Infotekmesin
Hartono Hartono
Sekolah Tinggi Teknik Wiworotomo
Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering

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Optimasi Parameter Gravitasi Shot Peening Terhadap Kekasaran, Kekerasan dan Struktur Mikro ST 45 dengan Metode Taguchi Trio Nur Wibowo; Hartono Hartono; Bambang Sugiantoro
Infotekmesin Vol 12 No 1 (2021): Infotekmesin: Januari 2021
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v12i1.519

Abstract

Shot peening is a surface treatment method at low temperature by shooting steel balls that are continuously adjusted for pressure and speed until plastic deformation is produced. The optimal parameter of the shot peening process was tested with the taguchi distribution. The factors and levels used are processing time, shooting distance and air pressure used in the shot peening process. Observations were made by looking at changes in surface roughness, thickness reduction, hardness levels, wear and changes in the microstructure of ST 45 steel material. The greatest hardness of 240.39 HVN was obtained at 10 minutes, a distance of 10 cm and a pressure of 9 kg / cm². The results of the surface wear test with the smallest value of 0.00039 mm³ / kg.m were obtained at 5 minutes, a distance of 10 cm and a pressure of 7 kg / cm². The results of the microstructure test showed that the change in the grain size of the microstructure of the material became flatter and smaller, the gravity shot peening method improved the mechanical properties of the ST 45 material.
Rancangan dan penerapan teknologi boiler vertikal fire tube untuk perebusan bubur kedelai tahu Kalisari Banyumas Sakuri Sakuri; Hartono Hartono; Nana Supriyana; Yusmedi Nurfaizal; Reza Azizul Nasa Al Hakim
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 1 (2023): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2284

Abstract

The purpose of the study was to design and application a fire tube boiler for boiling soybean slurry in the process of making tofu with a capacity of 120 kg/day Parameters were measured to compare the boiling process of wood fuel and wood pellet boilers, the efficiency of fuel use, the improvement of tofu quality based on physical and chemical observations, and the use of water for production activities.. The boiler tube is made of steel plate with a thickness of 5 mm. 2 inch diameter sch 80 fire pipe totaling 20 rods. The boiler body is 600 mm in diameter with a height of 1600 mm. The tube sheet uses a plate thickness of 8 mm and the distance between the fire pipes 100 mm. The design uses ASME Section IV of 2004. The boiler manufacturing process uses a welding system. The test results show that the boiler was able to boil 120 kg/hour soybeans because it uses an automatic and sustainable system. The boiler is safe to use because it is equipped with a manometer and pressure control valve so that the boiler works at a safe limit below 2 bar. Boiling with a boiler produces more efficient fuel. The boiling time is faster, the quality of tofu was better chemically and physically, and the use of water in the production of tofu is more efficient.
Co-Authors Bambang Sugiantoro Nana Supriyana Nurfaizal, Yusmedi Reza Azizul Nasa Al Hakim Sakuri Sakuri Trio Nur Wibowo