本文介绍了弱包镶强耐磨性胎体钻头的基本原理及使用效果。
This paper describes the basic principle and use of the bit with weak holding and high wear resistant matrix.
而钻头在破岩过程中，既要求具有高效的破岩能力，又要求具有强耐磨性和低阻力。
The bit needs not only the high rock-breaking capacity but also the strong wear and low resistance during rock-breaking process.
钨能进步钢的红硬性和热强性，并能进步钢的耐磨性。
Tungsten can improve the hardness and thermal strength of steel, and can improve the wear resistance of steel.
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