高速牙轮钻头轴承的失效分析。
目前牙轮钻头已较为广泛地用于水井钻探。
它改变了牙轮钻头直径校核的传统设计顺序。
It has changed the traditional design order in checking the diameter of bit.
PD C钻头与牙轮钻头相比，有许多优点。
保证三牙轮钻头的直径是钻头制造工艺的重点。
Diameter controlling is of great importance in rock bit manufacturing.
本文阐述了三牙轮钻头滑动轴承载荷的测试方法。
A method of determining the load on journal bearing of three-cone bit is described in this paper.
在牙轮钻头的钻进中，水射流是钻进速度快慢的决定因素之一。
Water jet flow is one of the decisive factors for drilling rate during rock bit drilling.
因此应针对不同性质的岩石设计符合其破岩特点的单牙轮钻头。
As a result it is necessary to design new type of one-cone bit according to the quality of the rock.
研制了一种新型的镶套轴承结构牙轮钻头，并进行了现场试验。
A new type rock bit with bearing liner structure has been developed and tested on the spot.
建立了牙轮钻头的球形齿、楔形齿和勺形齿三维空间的几何模型；
Geometry model of roller bit's sphere tooth, wedgy tooth and bucket shape tooth were established;
通过大量的现场试验，得出三牙轮钻头三喷嘴优化组合的经验比值。
The experiential ratio of optimum combination of three nozzles on tri cone bit is obtained based on many field experiments.
本文指出如何减少牙轮转速的差别及对牙轮钻头合金齿提出具体要求。
In this paper, some Suggestions of how to minimize the difference of rotation speeds and the requirements for...
根据“承力区假说”，建立了牙轮钻头钻进岩石过程的数学模型和模拟方法。
The mathematical model and analogy method for the penetrating process of roller bits arc established according to the load-bearing region hypothesis.
本文着重研究了牙轮钻头轴承用钢的粉末渗钒配方、工艺和渗层的组织结构。
This paper deals mainly with the formulation, processes and microstructure of the diffusion Vanadium-coating with powder on the journal bearing steel of cone bits.
三牙轮钻头主要零件形状复杂，影响钻头直径及牙轮齿圈啮合误差的因素较多。
There are many factors influencing the bit diameter and the tooth row intermesh due to the complicated shapes of the main parts of a three cone bit.
介绍一种牙轮钻头的现代设计方法。设计过程全部使用计算机辅助设计和优化设计。
A modern design method, by which computer aided optimum design is used through the whole process of roller bit design, is introduced in this article.
文中主要阐述了牙轮钻头设计全套软件的内容、软件原理，特点以及使用软件的基本方法。
In this paper, the Whole softwares, is given With its principle, its features and its working method.
本文以三牙轮钻头的台架试验和油气田现场试验的效果为依据，探讨三牙轮钻头的改进方向。
In this paper, on the basis of the results obtained from the bench and field tests of the three roller bit, its improving direction is approached.
在钢齿牙轮钻头强化材料中，详细地分析了铸造碳化钨堆焊层产生龟裂、脱落和断齿的原因。
Detailed analysis is made of the reasons why fissures, peeling-off, and tooth breaking exist in the build-up welding layer of cast WC for hardening material of steel-toothed gear drills.
对比了牙轮钻头的轴承能力数，得出结论：轮式金刚石钻头轴承寿命远远大于牙轮钻头轴承。
Compared the number of cone bit bearing capacity and concluded: diamond wheel bearing life is far greater than the cone drill bit bearings.
由于牙轮钻头在信号采集、处理等方面的优势，现阶段随钻地震测量主要采用的是牙轮钻头。
In the present SWD survey, roller-cone bit is widely used because of its advantages in signals recording and processing.
钢齿牙轮钻头增强了工作的平稳性，降低了牙齿的冲击载荷，使牙轮钻头的耐磨性能得到提高；
Steel tooth bit can increase the bit's stability and lower the tooth impact load, and enhance its wear resistance.
由于牙轮钻头在井底工作的复杂性，目前还没有从理论上建立牙轮钻头的定量运动与受力关系。
The quantitative relationship between the motion and force of cone bits has not been established up to now owing to the complexity of the work of the bits in bottom hole.
但是目前油田上使用的球形单牙轮钻头由于牙齿先期磨损严重，影响了钻头的机械钻速和寿命。
But now the use of the spherical one-cone bit shows that the teeth are abrade heavily in advance, which affects the velocity and life of the bit.
井壁模式分析说明，牙轮钻头的侧向切削过程不仅与齿面结构有关，而且与岩石性质、钻井参数有关。
Analysis of the side-wall pattern shows that the side-cutting process of the roller bit is related to not only the teeth surface design but also the rock property and the drilling parameters.
牙轮钻头牙齿破岩机理研究一直是钻井工程的一个热点和难点，备受岩石力学与工程界的关注和重视。
The rock-breaking mechanism of roller bit teeth is always a hot focus and difficulty in the fields of drilling, and it receives widely researchers attentions in the rock mechanics and the engineering.
三牙轮钻头结构复杂，其中齿面结构直接与地层接触，对于岩石破碎过程和钻头工作性能的影响最大。
The structure of tri-cone rock bit is complicated. As the cutting structure touch the stratum directly, it affects the process of breaking rock and the performance of tri-cone rock bit.
牙轮钻头是钻井工程中最主要的破岩工具，其工作性能的好坏直接影响钻井质量、钻井效率和钻井成本。
The operating performance quality of the roller bit, which is the most main broken crag tool, directly influence the well drilling quality, well drilling efficiency and well drilling cost.
文中介绍了在试验台上的试验情况和数据，并与三牙轮钻头进行了比较，得出了应用该钻头的重要结论。
In this paper, the situation and data in the test on testing table are presented, which are compared with those of three cone bit, obtaining an important result in applying this kind of bit.
文中介绍了在试验台上的试验情况和数据，并与三牙轮钻头进行了比较，得出了应用该钻头的重要结论。
In this paper, the situation and data in the test on testing table are presented, which are compared with those of three cone bit, obtaining an important result in applying this kind of bit.
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