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20 May 2024
DOI: 10.36499/jim.v20i1.10306
Effect of Firring Heating Rate on the Density, Porosity, Vickers Hardness and Microstructure of the Crucible Specimens
Majalah Ilmiah Momentum
Universitas Wahid Hasyim
๐ Abstract
Failure in the results of making the crucible is cracking and even deformation. Cracks that occur can cause fluid leakage when melting so that it disrupts the casting process. The quality of the crucible can be influenced by factors including the selection of constituent materials, particle size, the amount of pressure, and the length of the firring process of heat treatment and cooling in the furnace. This study aims to determine the effect of heating rate on crucible made from clay and kaolin and molasses as a binder. With the treatment of different heating rates in the firring process, namely 3 รขโฦ / min, 4 รขโฦ / min, 5 รขโฦ / min, 6 รขโฦ / min, and 7 รขโฦ / min.รย The composition of the materials used is 40% clay, 40% kaolin, and 5% molasses and 15% water as the total mass. The process of making specimens begins with crushing clay, sieving clay 100 mesh. Mixing process using twin screw extruder machine repeatedly for 45 minutes. Molded cylindrical size 20 x 20 mm, free air drying for 8 days, firring process at 1000 รขโฦ holding time 1 hour. The results showed that the difference in heating rate did not affect the change in chemical elements but the best heating rate was at 3รขโฦ/min showing a denser morphology, density value of 1.62 g/cm3, porosity value of 23%, and Vickers hardness value of 20.43 HVN.
๐ Keywords
#Crucible; Heating Rate; Physical Properties; Mechanical Properties
โน๏ธ Informasi Publikasi
Tanggal Publikasi
20 May 2024
Volume / Nomor / Tahun
Volume 20, Nomor 1, Tahun 2024
๐ HOW TO CITE
Rusiyanto, R.; Meiartha, REGA; Fitriyana, Deni Fajar; Sudiyono, S.; setiadi, rizki; Siregar, Januar Parlaungan; Ansori, CHUSNI, "Effect of Firring Heating Rate on the Density, Porosity, Vickers Hardness and Microstructure of the Crucible Specimens," Majalah Ilmiah Momentum, vol. 20, no. 1, May. 2024.
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