ANALISIS PENGARUH TEKANAN UDARA SANDBLASTING TERHADAP KEKASARAN PERMUKAAN ALUMINIUM 6061-T6

Hanafi, Nuhan (2025) ANALISIS PENGARUH TEKANAN UDARA SANDBLASTING TERHADAP KEKASARAN PERMUKAAN ALUMINIUM 6061-T6. S1 thesis, Universitas Muhammadiyah ponorogo.

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Abstract

The focus of this study is to analyse the effect of air pressure variations in the sandblasting process on the surface roughness of 6061-T6 aluminium. Sandblasting is a method of cleaning and modifying surfaces by spraying high-pressure abrasive particles to remove contaminants and improve the adhesion of the coating. 6061-T6 aluminium was chosen because it has a combination of high strength, good corrosion resistance, and stable mechanical properties. The variations of air pressure applied in this study include 2.5 bar, 3 bar, 3.5 bar, 4 bar and 4.5 bar with silica sand measuring 60 mesh as an abrasive medium. Other parameters controlled include a nozzle distance of 10 cm, a spraying angle of 90°, and a spraying time of 30 seconds. Surface roughness is measured using a Surface Roughness Tester with Ra, Rt, and Rmax parameters, while material thickness is measured using a micrometre. The results showed that the increase in air pressure significantly increased the surface roughness of 6061-T6 aluminium. This is due to the greater impact energy of abrasive particles at high pressure, thus creating deeper microdeformations. These findings are expected to serve as a reference in sandblasting parameter optimisation for industrial applications that require precise surface quality control.

Item Type:	Thesis (S1)
Uncontrolled Keywords:	Sandblasting, Aluminium 6061-T6, Tekanan Udara, Kekasaran Permukaan, Partikel Abrasif.
Subjects:	L Education > L Education (General)
Divisions:	Faculty of Engineering
Depositing User:	Nuhan Manuah Hanafi
Date Deposited:	26 Aug 2025 06:27
Last Modified:	05 Nov 2025 04:15
URI:	https://eprints.umpo.ac.id/id/eprint/17169

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