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1)  combined cone type cutting head
组合式牙轮钻头
1.
A brief introduction is made on the combined cone type cutting head with the rock fragmentation analysed, and comparison is conducted with the drag bit and the roller type cutting head in characteristics.
组合式牙轮钻头作了简要介绍,分析了其碎岩原理,并与刮刀钻头及滚刁钻头进行了特性对比,阐述了设计、使用要点。
2)  tri-cone combination bit
三牙轮组合钻头
1.
00m with diameter φ700mm,using our own making φ700mm tri-cone combination bit carried out reaming operation after second hole-in target hitting.
00m、井径φ700mm,在二次成井中靶后利用自制φ700mm三牙轮组合钻头进行扩孔作业。
3)  large diameter combined cone bit
大口径组合牙轮钻头
1.
Based on the practical cases undertaken by author,some problems in application of large diameter combined cone bits are discussed Suggestions on improvement of the bits are proposed in this pape
结合牙轮钻头的结构、性能、工作条件,分析了大口径组合牙轮钻头在使用中出现的问题,并提出了改正措施和建
4)  disc onecone bit
盘式单牙轮钻头
1.
This paper established the model of rockbreaking mechanism on disc onecone bit, and developed the simulate software.
在适当的假设条件之下,建立了盘式单牙轮钻头破岩机理仿真模型,并在此基础上开发出盘式单牙轮钻头破岩机理仿真软件。
5)  bit barrel
筒式牙轮钻头
6)  jet nozzled rock bit
喷射式牙轮钻头
补充资料:大直径牙轮钻头


大直径牙轮钻头


  大““钻头篡
  
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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