KARAKTERISASI PAHAT HSS ( HIGH SPEED STEEL) PRODUK JERMAN DAN PRODUK TAIWAN

Abstract

The term “cutting tool” in fact covers a very large variety of tools: turning tools, drill bits, planer tools and slotting tools, scraping or shaving tools, drill spindles, milling cutters, facing cutters, recessing tools, reamers, taps and dies, files, and grinding wheels. HSS cutting tool was commonly used for turning process for manufacturing. At common market there is many large selection of HSS tool steel with different type and mark. One of them was HSS tool steel made in Germany and Taiwan which share the same trade mark but have significant differences at price. At this paper our testing focused on comparation between HSS tool steel made in German and the one made in Taiwan which we can commonly found at the market. Our testing consist of hardness test , micrography test and chemical composition test. By that test we want to obtain which HSS more reliable for manufacturing process. The specimen were BOHLER MO RAPID EXTRA 1200 with ¼”x1/4” x4” made in Taiwan and the one Made in Germany. The result showing that HSS cutting tool Made in Germany has 64,42 HRC and HSS Taiwan has 62,35 HRC. HSS Germany contain martensite and carbida and HSS Taiwan contain martensite, retained austenite in micrography. Key Words : Cutting tool, HSS, Germany, Taiwan