Analysis of Aisi Material Power of Aisi 4140 Bucket Teeth Excavator Using Influence of Abrasive Wear

Excavators are often used in the mining and construction projects. They are the digger machines normally used for dredging materials in mine, digging, leveling the ground, dredging the river, etc. One of the components of excavator that is frequently replaced is bucket teeth. The replacement of bucket teeth is mainly due to the wear factor occurring in this component. To decrease the wear of the material, heat treatment is applied to increase the material hardness value and eventually, to have high competitiveness in product marketing. Material used in this research was AISI 4140, and the heating process was performed on laboratory's furnaces. The selected cooling medium was water. Analysis was done to determine the values of wear factor, hardness, and micro structure. The investigation of micro structure was done by using optical microscope, hardness test was done using Rockwell hardness tester, and wear test was performed using Ogoshi High Speed Universal Wear Testing. From the results of the analysis, it can be concluded that hardness value is inversely proportional with wear value, the harder the material, the lower the wear value. Meanwhile, the influence of material hardness is the magnitude of Mn in a bucket tooth.