roller-cone bit 牙轮钻头
steel tooth roller cone bit 钢齿牙轮钻头
roller-cone core bit 牙轮岩心钻头
roller bit with cone base 锥底滚刀钻头
The complex layers are compacted and well-proportioned,the shear strength of which is 625 MPa and wear value is reduced by 10%～70%. The complex layers prolong the working life of steel tooth roller cone bit.
研究表明:金刚石经过金属化处理后表面具有一定的金属性和浸润性,通过一定堆焊工艺在钢齿牙轮钻头齿面形成了组织致密均匀、硬质点与基体熔合良好的强化层,其抗剪强度达到了625MPa,磨损量减少了10%～70%,延长了钻头的使用寿命。
参考来源 - 钢齿牙轮钻头齿面强化复合堆焊实验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
On the basis of many experiments, the mechanics model for the interaction of roller cone bit and rock was established.
在大量单元实验的基础上，建立了牙轮钻头与岩石相互作用力学模型。
On the system dynamics, the dynamics model for roller cone bit under the interaction of drilling string and rock was established.
从系统动力学的角度出发，建立了基于钻柱、岩石相互作用下的牙轮钻头动力学模型。
The dynamics of roller cone bit under the interaction of drilling string, bit and rock during the drilling process was investigated.
研究了钻井过程中钻柱、钻头、岩石相互作用下的牙轮钻头动力学特性。
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