The Effect of Weight Fraction Goat Bone Charcoal and Rice Husk Charcoal on the Mechanical Properties Low Carbon Steel Carburizing

Abstract

Pack carburizing is a process of heat treatment and cooling of solid metal to change the physical and mechanical properties of the metal. The carburizing process adds carbon elements to the surface of low-carbon steel by heating at temperatures of 900°C - 950°C. Carbon elements can be obtained from goat bone waste and rice husks. Both carbon content is high enough to be used as raw materials for making activated charcoal. This study aims to determine the mechanical properties (hardness, tensile strength, and wear value) of the low-carbon steel pack carburizing process. The experimental research method combined goat bone charcoal and rice husk charcoal at 50%:50%, 40%:60%, and 25%:75% at 900˚C and quenched with mineral water. The maximal hardness test results were 756 VHN on a mixture of goat bone charcoal and rice husk charcoal at a composition of 25%:75%. The maximal tensile strength test results were 1338 MPa in a mixture of goat bone charcoal and rice husk charcoal with a composition of 40% and 60%. The maximal wear test results were 0.00035 mm³/kg mixed variations of goat bone charcoal and rice husk charcoal with a composition of 25% and 75%.