The Characteristics of Lampung Local Sand as Casting Sand in the Metal Casting Process

Abstract

In Indonesia especially sumatra island, the demands for casting sand was mainly fulfilled using sand brought from ceper, central Java although with a very expensive transportation cost. For the Sumatran region, the province of Lampung is rich in quartz sand that has the potential to act as substitute to the Java originated sand. This experiment aims to characterize sand from sub district Tanjung Bintang and sub district Maringgai of Lampung province as reference for its use as casting sand. In this experiment, two kinds of sand sample extracted from Lampung province were characterized using X-RF and X-RD. Casting sand from Ceper of Middle Java province was analyzed as comparison. The results showed that although the water and clay contents of Ceper sand were higher than that of Lampung sand, the Lampung sand itself had finer particle size and morphology which were shown by higher Grain Finenesss Numbers (GFNs) than Ceper casting sand, at 48.49 for Tanjung Bintang sand and 47.61 for Maringgai sand as opposed to Ceper's 31.31. With higher GFNs value, chance of surface defect can be minimalize. Elemental analyses showed that Lampung sand contained more Al2O3 and MgO than its Java counterpart. For Tanjung Bintang sand have Al2O3 content at 13.87% and 18.76% for Maringgai sand respectively. For Ceper sand only have 4.54% for Al2O3 and for MgO, only Maringgai sand which contain it at 1.39%. These elements contribute to the improvement of the ability of produced casting sand to resist higher temperature and reducing the need for binder material.

Challenges and Future Prospective of Alternative Materials to Silica Sand for Green Sand Mould Casting: A Review

“…Hendro et al [136] used three different local sand named Ceper sand, Tanjung bintang sand, and Maringgai sand and evaluated clay content, grain fineness number, sand particle morphology, and chemical composition reported in Table 7 for the feasibility in sand mould casting. They observed that local sand could be used in sand mould casting, especially for non-ferrous casting.…”