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Karim, Ivan Junaidy Abd
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Pengaruh Ketebalan Coran Dan Temperatur Tuang Terhadap Sifat Fluiditas Aluminium Kaleng Bekas Dengan Metode Pengecoran Lost Foam Casting Sangaji, Dediyanto A; Tjiroso, Bambang; Karim, Ivan Junaidy Abd
Patria Artha Technological Journal Vol 8, No 1 (2024): Patria Artha Technological Journal
Publisher : Department of Electrical Engineering, University of Patria Artha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33857/patj.v8i1.855

Abstract

This study aims to determine the effect of casting thickness and pouring temperature on the fluidity properties of used aluminum cans. In addition, this study was also conducted to determine the defects that occur in used aluminum can castings. The casting method used in this research is the lost foam casting method with variations in pouring temperatures of 670°C, 700°C and 730°C. and variations in the thickness of the castings, namely 2 mm, 4 mm, 6 mm and 8 mm to determine the fluidity value of used aluminum cans. Observations made are defects that occur in the castings. The results showed that in the thickness of the mold pattern with a temperature of 670°C, 700°C and 730°C fluidity increases with increasing pouring temperature. At a temperature of 670°C, the fluidity length is 38 mm, at a temperature of 700°C the fluidity length is 48 mm and at a temperature of 730°C the fluidity value increases to 113 mm. However, in addition to increasing the fluidity value, there are several casting defects that occur in the castings, namely, the occurrence of external shrinkage at 670°C, air cavities at 700°C, and pinhole defects at 730°C.
Analisa Pengaruh Variasi Temperatur Tuang Pada Proses Pengecoran Alumunium Kaleng Bekas Terhadap Sifat Kekerasan Dan Struktur Mikro Togubu, Sukirman A; Tjiroso, Bambang; Karim, Ivan Junaidy Abd
Patria Artha Technological Journal Vol 8, No 1 (2024): Patria Artha Technological Journal
Publisher : Department of Electrical Engineering, University of Patria Artha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33857/patj.v8i1.852

Abstract

The purpose of this study is to determine the effect of casting temperature variations on the hardness and microstructure of used aluminium cans. The casting method used in this research is the Lost Foam Casting method with a cast temperature variation of 670°C, 700°C and 730°C. Vickers hardness testing was carried out to determine the effect of temperature variations on hardness, microstructure observations were made to see what phenomena occurred. The results show that the hardness value with the lowest temperature of 670°C has a higher average hardness value in the Vickers test compared to the high temperature of 730°C. This shows that the pouring temperature rate of metal castings is more effective in metal recycling at 670°C for the hardness value in the Vickers test. Porosity decreases with increasing pouring temperature, seen at 670°C with a microstructure magnification of 100x the porosity is rather round and large on the surface of the castings. While at a temperature of 730°C with a magnification of 100x microstructure, it can be seen that the porosity is getting smaller in the form of dots scattered on the surface of the castings.
Co-Authors Bambang Tjiroso Sangaji, Dediyanto A Togubu, Sukirman A