Pengaruh Ukuran Neck Riser Terhadap Cacat Porositas dan Cacat Penyusutan Pada Proses Pengecoran Produk Aluminium Menggunakan cetakan pasir

Prakoso, Addin Galih (2013) Pengaruh Ukuran Neck Riser Terhadap Cacat Porositas dan Cacat Penyusutan Pada Proses Pengecoran Produk Aluminium Menggunakan cetakan pasir. Other thesis, Universitas Sebelas Maret.

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    Abstract

    Defect in a casting can be due to poor channel system. One of channel that can be create a defect if poorly designed is riser. This research is aimed to determine the effect of neck riser diameter against percentage of porosity and shrinkage of the cast product. Raw material aluminium alloy that used in this research is derived from waste motorcycle shoe drum brake. There are three variation in this experiment, neck riser with diameter 10 mm, 15 mm, 20 mm. Porosity test is done by comparing the theoretical density and the actual density. Theoretical density is calculated using the standard ASTM E 252-06 while the actual density is calculated using Archimedes theory. Shrinkage testing performed using ASTM D 955-00. The volume of the cast was measured using a measuring cup. The reseach result showed that the greatest percentage of porosity and shrinkage occurs in the neck riser with a diameter of 10 mm. Followed by the neck riser with size of 15 mm. Smallest porosity and shrinkage occurs in the neck riser with a diameter of 20 mm. Keyword : Alumnium alloy, porosity, shrinkage, neck riser

    Item Type: Thesis (Other)
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Divisions: Fakultas Teknik > Teknik Mesin
    Depositing User: Lia Primadani
    Date Deposited: 10 May 2014 02:15
    Last Modified: 10 May 2014 02:15
    URI: https://eprints.uns.ac.id/id/eprint/15628

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