Word processing factory alloy drill Shandong Jinan preferred zirconium through the annual maximum benefits waiting for you - Jinan zirconium-trade Co., end shopping sweep goods, do not rush was not any! Generally refers carbide alloy drill bits, points overall, welded, indexable blade and exchangeable-head. The main ingredient is tungsten carbide, cobalt, etc., are generally relatively high hardness above HRC90 degree, in batch processing and hard machining of difficult situations more applicable! ! Overall alloy drill alloy drill now on the market in general for the whole drill tungsten steel material, although the same material, but due to the processing of various brands of product quality and disparities. Alloy drill imported and domestically also vary widely. Alloy drill generally use imported grain VHM micro hard alloy (ISO K40), ultrafine particle type (0.6μm) in high-performance drill and general milling applications, the ideal combination of hardness and toughness together. Alloy drill will take high quality surface coating, such as aluminum chromium nitride (AlCrN) coating, the coating is a single layer coating, the thickness of 4μm, the micro-hardness of the friction coefficient 3200HV, 0.35, and thermal stability up to 1100 Celsius. After the drill bit color was blue-gray coat. Alloy drill can process low-alloy steel, high strength steel after coating. High hard steel can reach 54HRC. Learn more about the word alloy drill, Shandong alloy drill, drill alloy word processing information, please visit www.jngaotong.com