Measures prevent deviation of deep drilling and test method;
防治深孔钻孔偏孔及检测方法
It took the lead of turbine tool industry and now was on the stage of turbine tool with reducers.
涡轮钻具由前苏联研制出来以后,得到了迅速发展,目前已发展到减速器涡轮钻具阶段。
The simulation of axial distortion of four-fulcrum thrust ball bearing pack of turbodrill;
涡轮钻具四支点推力球轴承组轴向变形的仿真
New method for calculating the wear life offour-pivot ball bearing on turbodrill;
涡轮钻具用四支点球轴承磨损寿命估算新方法
Application of turbine drill in deep hole section of West Sichuan;
涡轮钻具在川西深井段的应用分析
The CFD model with one single periodic flow-path of turbine drill is set up accurately by model tools.
对模拟出的涡轮叶栅内流场,重点分析了转子叶片表面压力场的分布情况,并将模拟结果与十级涡轮台架的实验数据进行了对比,证明了应用CFD技术对涡轮钻具叶栅内流场模拟分析的有效性,为涡轮钻具机械性能预测分析提供了一种有力的技术手段。
The design calculation process and related process methods for transmission ratio, gear transmission, end mechanic sealing and eccentric short roller bearing used for 180 turbine drill are described.
叙述了 180涡轮钻具用减速器的传动比 ,齿轮传动 ,端面机械密封和偏心短圆柱轴承的设计计算过程和有关处理办法。
Type selection of ф3.40m large diameter and deep hole drilling equipment for No 3 main tower pier of Wuhan Tianxingzhou great Yantze River bridge;
武汉天兴洲长江大桥3号主塔墩ф3.40m大直径深孔钻孔设备选型
Effect of Cutting Parameters on Deep Hole Drilling's Quality of High Pressure Heater Tube Plates
切削参数对高压加热器管板深孔钻孔质量的影响
Drilling 50 yards deep,
钻孔至50码深处，
guide twist drill
有导径的深孔麻花钻
Study on drill bit for large diameter core drilling of deep hole in hard rock
硬岩深孔大口径取芯钻进的钻头研究
Design and Realization of the Monitoring System in Deep-Sea Drilling Machine
深海中深孔钻机监控系统设计与实现
Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.
（1）钻孔使用配套冲击电钻.钻孔时,孔洞间距与孔洞深度应满足设计要求.
tap(ping) drill
螺丝孔钻，螺丝底孔钻
The sorker was drilling.
此工人在用钻孔机钻孔。
The Application of Deep Pore Loosening Control Blasting in Bridge Bored Pile Construction
深孔松动控制爆破在桥梁钻孔桩施工中的应用
CONSTRUCTION SCHEDULE ADVANCEMENT OF DRILLING PILE BY DEEP HOLE WATER PRESSURE BLASTING
采取深孔水压爆破提高钻孔桩施工进度
The Construction Techniques for the Deep-water and Large Aperture Drilled Piles of Hutiaomen Bridge
虎跳门特大桥深水大孔径钻孔桩施工工艺
high efficiency drilling system for small and deep hole
高效小直径深孔钻削系统
STEP HOLE DRILLING METHOD FOR MEASURING PLANE RESIDUAL STRESSES IN DEEP LAYER
钻阶梯形孔法测量深层平面残余应力
Study on High Speed Drilling in Deep 38CrMoAl Steel Tube;
38CrMoAl料筒高速深孔钻进研究
The CAD and research of drill bit escape of clips for the deep hole processing drill
深孔加工钻头排屑研究及CAD设计
Stability and Bifurcation of the Drilling Shaft System in Processing Deep Hole Based on Boring and Trepanning Association
BTA深孔加工钻杆系统的稳定性及分岔
Experimental research on the system performance in near-dry deep hole drilling
亚干式深孔钻削系统性能的试验研究