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详细分析了牙轮钻头早期失效的典型形式和原因,提出如何通过合理选择操作参数、钻头、加强维护和强化现场管理来提高其寿命。
The typical forms and causes of early failure of roller cone bits are analyzed in detail. How to improve the service life of the roller cone by choosing the operating parameters, drill bit, strengthening the maintenance and strengthening the on-site management.