DefinePK

Abstract

Carburizing Pack method is one method to improve mechanical properties of carbon steel lace that is hardness value and value of tensile strength of low carbon steel at surface. In this process the low carbon steel remains strong and resilient at the stadium. This study aims to determine the effect of carburizing media with the percentage variation of bone powder of buffalo bones as carbon in carburizing process to mechanical properties of low carbon steel. The temperature used in the carburizing process lasts is 9000C with a holding time of 60 minutes. In this process the carbon obtained from the buffalo bone char is made into a fine powder and combined with BaCO3 as its the energizer. In the percentage study of buffalo bone powder as carburizing medium is 65% ATK + 35% BaCO3, 75% ATK + 25% BaCO3, 80% ATK + 20% BaCO3 from the weight of buffalo bone charcoal used in carburization process. In this study steel will be added with barium carbonate and heated buffalo bone charcoal in a furnace with a temperature of 9000C. Then tested hardness Vickers sensitivity and tensile strength. From the research result of hardness for normal material or without treatment equal to 74,333 kg/mm2 and tensile strength 636,94 N/ mm2. While after experiencing the method of carburizing pack treatment then the hardness has increased, the highest hardness at percentage 80% ATK + 30% BaCO3 that is 91,667 kg/mm2. Likewise in tensile strength after pack carburizing process is the largest value in percentage 80% ATK + 30% BaCO3, it is 1233,78 N/ mm2. This research results show that the percentage of buffalo bone charcoal powder as a medium in the method of carburizing pack can improve the mechanical properties of hardness and tensile strength of low carbon steel.