STUDY PACK CARBURIZING FOR SUBSOIL PLOW CHISEL WITH ALTERNATIVE CARBURIZER MEDIA CORN COB CHARCOAL–PICTADA MAXIMA SHELL POWDER

Longevity of tillage tools, mainly depends on their parts' material wear resistance and strength. The article summarizes information about steel physically-mechanical of subsoil plow chisel that are most useful for soil tillage. The chisel is given heat treatment pack carburizing process with media carburizer corn cob charcoal and pictada maxima shell powder. The physical properties of chisels from various competitions of media carburizer are analyzed. The findings of this study indicated that pack carburizing process with carburizer media Corn Cob Charcoal – Pictada Maxima Shell Powder (PMSP) can increase the hardness number and the carburizing layer from Subsoil plow Chisel. The highest hardness number rate is 662 Kg/mm2 , and the effective depth of the maximum carburizing layer reaches of 372 μm at carburizing temperature 950 ° C and percentage of PMSP 30%