Effect of FeV Residual Powders as an Innovation of Thermo Reactive Deposition Process (TRD) with Material Balance Method to Carbide Surface Characteristics on SUJ2 Tool Steel

Abstract

Thermal Reactive Deposition (TRD) using pack cementation method with vanadium as carbide former has been examined to form the carbide layer on SUJ2 tool steel. In this study, effect of addition recycled FeV powder to new FeV powder to the product quality. Calculation analysis resulted 4 variations of FeV powder ratio to be studied i.e. 100% new FeV powder; 100% residual FeV powder; new powder FeV : residual FeV powder 50%:50%; New FeV powder : residual FeV powder 25%:75%. Electron microscope (SEM) and optical microscope (OM) analysis showed that the carbide layer formed in each sample had the same relative layer thickness of about 18μ. X-ray diffraction (XRD) characterized showing that there were a vanadium carbide compound in the formed layer. Hardness test and wear test resulted a relatively similar hardness value of about 1800 HV and 3×10−5 mm3/m. It can be concluded that the use of residual FeV powder to the new FeV powder can be applied because the test results with various ratios that have been done have relatively similar results and meet the hardness application specification of 1700 HV.