Below is a summary of some of the key terminology relating to Drill Bits.ġ. Carbide tipped tools should always be used when machining highly abrasive materials.Īmerican National Standard B94.11M-1993 covers the relevant information relating to drill bits, including sizes, tolerances, nomenclature, and definitions. This greatly reduces need for costly changes with increased scrap and rework.Ĥ. Carbide tipped tools last far longer because the carbide chip forming surface resists wear as the chip flows over the tools. Carbide tipped tools improve surface finish and hold size far longer for better quality.ģ. Carbide tipped tools retain their cutting edge hardness at high machining temperatures generated by high cutting speeds and feeds that reduce machining cycle time.Ģ. Carbide is usually superior for the cutting of tough materials such as carbon steel or stainless steel, as well as in situations where other cutting tools would wear away faster, such as high-quantity production runs.ġ. Carbide tools can withstand higher temperatures at the cutter-workpiece interface than standard high-speed steel tools (which is a principal reason for the faster machining). Most of the time, carbide cutters will leave a better surface finish on the part, and allow faster machining than high-speed steel or other tool steels. Mentions of "carbide" or "tungsten carbide" in industrial contexts usually refer to these cemented composites. Cemented carbides commonly use tungsten carbide (WC), titanium carbide (TiC), or tantalum carbide (TaC) as the aggregate. It consists of fine particles of carbide cemented into a composite by a binder metal. Cemented carbide is a hard material used extensively as cutting tool material, as well as other industrial applications.
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