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The Role Of HSS Cobalt Drill Bit High-Speed Steel
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High-speed steel is also called high-speed tool steel or front steel, usually called white steel. It was first created in the United States in 1898 by FW Taylor and M. White. Because high-speed steel has good processing properties, the combination of strength and toughness is also very good, it is mainly used to manufacture complex thin-walled and impact steel. Corrosion-resistant metal cutting tools, such as HSS cobalt drill bit . Of course, these characteristics can also be used to make high-temperature bearings and cold extrusion dies. Moreover, the toughness, strength and heat resistance of high-speed steel are better than that of carbon tool steel, and the cutting speed is much faster than that of carbon tool steel (iron-carbon alloy), while the performance of hard alloy is better than that of carbon tool steel. Better than high-speed steel. It can be increased by 2-3 times.
HSS cobalt drills are also alloy drills. General-purpose tool steels are also alloy steels, but only iron-carbon alloys. High-speed steel needs to be further divided into ordinary high-speed steel and high-quality high-speed steel. Therefore, the current alloy drills usually refer to cemented carbide drills. Even if high heat is generated by high-speed cutting (about 500°C), high-speed steel drill bits can still maintain a high hardness, and the HRC can be higher than 60. Carbide drill bits (usually made of tungsten steel) have a series of excellent performance. It has high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, etc., especially even at 500 ℃ still has high hardness and wear resistance. The temperature remained basically unchanged and kept at a high temperature of 1000°C.
HSS cobalt drill bits are durable and versatile, but wood auger drill bit is relatively not very durable, but much better than many hard alloys.