PENGARUH TEMPERATUR DAN WAKTU CELUP PADA PROSES HOT DIPPING BAJA KARBON RENDAH DENGAN ALUMINIUM DAUR ULANG TERHADAP KEKASARAN PERMUKAAN, KETEBALAN LAPISAN DAN LAJU KOROSI

AZHAR, KGS. M. HAFIZ and Alian, Helmy (2016) PENGARUH TEMPERATUR DAN WAKTU CELUP PADA PROSES HOT DIPPING BAJA KARBON RENDAH DENGAN ALUMINIUM DAUR ULANG TERHADAP KEKASARAN PERMUKAAN, KETEBALAN LAPISAN DAN LAJU KOROSI. Undergraduate thesis, Sriwijaya University.

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Abstract

Hot dipping is a process of coating the base metal with other metals, which in the process is done by dipping a base metal to the other metals that has been melting before. but the metal coating would have a melting point below the base metal to be coated with a metal coating melting point less than 1000°C. by varying the time and temperatures, hot dipping process produces differences layer thickness, surface roughness, and the rate of corrosion. Steel ASTM A53 which has been coated by dipping into a bath of Al-liquid at a temperature of 750°C, 775°C and 800°C for 2 minutes, 4 minutes and 6 minutes decreased the surface roughness, where the average final surface roughness of the specimen 750°C is 4.7μm, on the specimen 775°C is 4μm, and the specimen of 800°C is 3,3 μm. Extra thickness also occur along with the length of time of immersion and temperatures rise. The experiment results showed the thickest layer existing at the time of 6 minutes with an average thickness 55.6 μm while the smallest at the time of immersion 2 minutes with an average thickness is 43.2 μm. with increasing temperature, thickness also increased, it appears that temperatures of 800°C has a thickness of 48.9 μm and the lowest at a temperature is 750°C of 48.7 μm. the corrosion rate of the test results, obtained the corrosion rate was biggest with the raw material of 1.494 mm /y, while the corrosion rate is the smallest owned by the specimen with immersion time of 6 minutes is equal to 1.056 mm/y. their immersion temperature variation, the rate of corrosion at temperatures of 750°C at 1.197 mm/y, the temperature of 775°C at 1.178 mm/y, and the temperature of 800°C at 1.161 mm/y. This case shows that the rising temperature and long immersion time, the corrosion rate will decreases, which indicates the rising temperature and long immersion time, will produce a good protection from corrosion.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	hot dipping, temperature, immersion time
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Users 2701 not found.
Date Deposited:	06 Nov 2019 06:59
Last Modified:	06 Nov 2019 06:59
URI:	http://repository.unsri.ac.id/id/eprint/14831

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