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The aim of research is getting an idea of the carbide compounds spread through the usage of SEM/EDS technology, the type of carbide fraction technology using XRD, and get an idea of the performance/performance of various types of material HSS through a machining test of critical wear criteria. And specified method used was pure experimental. The study consisted of two stages. Phase I testing to determine the lathe machining tool life/performance based on critical wear criteria specified. Phase II characterization to determine the type of carbide that of the lathe chisel HSS and circumstances fractions. Implementation of the Phase I study, first conducted chisel grinding process so that it can be used in the metal cutting process of turning process. Grinding against the two types of chisel studied performed with the same geometry ie chisel Side rake angle (12°-18°). Angle of keenness (60°-68°) and Side relief angle (10 ° - 12 °). Likewise machining parameters were taken with the same machining conditions. Based on test results obtained tool life tool life 27 minutes from Factory-A and from Factory-B 9 minutes to reach the 0.3 mm wear criticism. For both types of materials chisel, distribution of hardness on wear areas generally experienced a decrease of hardness compared with areas away from wear. The existence of this decline due to the influence of heat as a result of the cutting process. Material HSS suffered tempering resulting in decreased hardness. Results obtained from SEM examination that HSS Factory-A origin has the elemental composition of the alloy Ti, Cr, V, Mo and W. The alloy elements forming a complex carbide (the results of the XRD) that is Cr7 Mo24 C19 Fe6 W6 C and V2 C. While the HSS from Factory-B are Ti, V, Cr, and Mo. Alloying elements that will form carbides Cr23 Fe21 (W, Mo)2 C19 and V4 C3 while the impurities that exist, namely Al2 O3. |
