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通过调研牙轮钻机钻杆失效形式，运用力学分析和摩擦磨损原理，找出了影响钻杆寿命的原因，在实验基础上对钻杆进行强化处理
By investigating the failure mode of the drill pipe drill cone, using mechanics analysis and friction and wear principle, find out the reasons that affect the life of the drill pipe, on the basis of experimental drill pipe reinforcement