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在分析钻进时钻头“打滑”原因的基础上，提出了利用弱包镶来解决“打滑”的思路。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。
On the basis of analyzing the reason of “slipping” of bit when drilling, the idea of using “weak slipping” to solve “slipping” is put forward. This paper introduces the basic principle and effect of weak package inlaid wear-resistant carcass drill bit.