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美国肯纳金属公司的ＳＥ钻头当前，在占机加工时间３０％～５０％的钻削加工中广泛应用的仍是高速钢钻头。即使是大多数硬质合金钻头在几何形状的设计中都直接沿用高速钢钻头的传统形式，没有发挥硬质合金硬度高，刚性好，高速切削的特性。肯纳金属公司的欧洲子公司——肯...
SE drill bits from Kennametal in the USA At present, high-speed steel drill bits are still widely used in drilling machining which takes 30% to 50% of machining time. Even most cemented carbide drills use the conventional form of high-speed steel drills directly in their geometry design and do not exhibit the properties of high hardness, good rigidity and high-speed cutting of cemented carbide. Kennametal’s European subsidiary - Ken ...