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1.丝锥的材质 丝锥的材质主要是早期的工具钢及目前使用的高速钢、硬质合金等。工具钢丝锥只适合手工攻螺纹和小批量生产,现在已很少使用。 (1) 高速钢 高速钢在近600℃的高温下仍具有很高的硬度,这使它的抗磨性大大优于工具钢。与钨系高速钢相比,钼系高速钢的高硬度碳化物晶粒小,韧性好,用这种材料作刀具可以获得锋利的刃口,而且不易崩刃和折断,所以钼系高速钢作为丝锥材料得到了广泛的应用。
1. Taps material Taps are mainly made of early tool steel and currently used high-speed steel, carbide and so on. Tool Tap is only suitable for hand tapping and small batch production, is now rarely used. (1) High-speed steel High-speed steel still has a high hardness at a high temperature of nearly 600 ° C, which makes it much more resistant to wear than tool steel. Compared with tungsten high-speed steel, molybdenum high-speed steel high hardness carbide grains small, good toughness, with this material as a sharp knife blade can be obtained, and not easy to chipping and fracture, so as a high-speed molybdenum steel as a Taps material has been widely used.