Hidayah, Amir Surya
(2019)
Rancang Bangun Mold Press Pellet Pasir Silika.
Other thesis, Universitas Islam Riau.
Abstract
Potential natural mineral resources such as clay, feldspar, kaolin and silica sand are widely distributed in various regions in Indonesia. The ceramic industry by utilizing the many natural mineral resources is examined at this time. The purpose of this thesis is to design and make tools and get results in the form of silica sand pellets that are affected by pressure. From the above background, it was designed to build a mold press pellet or silica sand mold, to get a quality mold with cold pressing method. The materials used to make (molds, punch levers, cylindrical plates, and lower pressure bearings) are ASTM A276, Type 410 steel. ST60 stainless steel matrtensit is used to make (punch position, and position of the mold). And SS400 steel is used to make (round plate at a mold position). In this study produced molds with dimensions or size of 25.45 mm, height of 89 mm. the volume of the mold cylinder is 45.07 cm³ with a mold circle area of 5.06 cm². punch cross-sectional area is 452.16 mm², the maximum pressing force on the mold is 49050 N. The normal stress result is 108.47 MPa, the strain value is 3.8 mm / mm, the modulus of elasticity value is 28.54 MPa, the mold material is used has a maximum limit of 812,871 MPa, mold material used is very good. The weight of the vertical support reactions A and B is 2500 kg and the maximum moment obtained is -612500 kg.mm. Silica sand pellet molds produced can be utilized in the development of fuel cell and composite materials.
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