CD Skripsi
Pengaruh Hasil Pengecoran Recycle Kaleng Aluminium Terhadap Kekasaran Permukaan Dan Bentuk Chip Dengan Variabel Pemotongan Pada Pembubutan
ABSTRACT
In the modern industrial era that prioritizes resource efficiency and environmental sustainability, the use of recycled materials is one of the important solutions in the manufacturing process. Aluminum, especially from used cans, is a material that is easily recycled and is widely used in various industrial sectors. This study aims to determine the effect of cutting variables on the surface roughness and chip shape produced from the turning process of recycled aluminum from used cans. The cutting variables analyzed include rotation speed (1000, 630, and 400 rpm) with cutting depth (0.5 mm and 1 mm), with a constant feed rate of 0.17 mm/rev. The machining process was carried out on a G.D.W LZ 350 lathe using HSS chisels and aluminum casting specimens from used cans. Surface roughness testing was carried out using a surface roughness tester, while chip shape observation was carried out visually based on the classification of continuous, semi-continuous, and discontinuous chips. The results showed that the higher the rotation speed, the surface roughness value tended to decrease, resulting in a smoother surface. On the contrary, at lower speeds and larger cutting depths, the surface roughness increases and the chip shape becomes more irregular. This study concludes that proper setting of cutting parameters can improve the surface quality and efficiency of recycled aluminum machining process. This finding is expected to be a reference in optimizing recycled material machining on an industrial scale.
Keywords: recycled aluminum, turning, surface roughness, chip formation.
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