threaded connection

On the basis of an analysis of the location and causes of the failure of drill collar threaded connection, a high-strength drill collar threaded connection is developed.

在分析钻铤螺纹失效部位及原因的基础上，研制了高强度钻铤螺纹，它与普通钻铤螺纹相比，只是在外螺纹小端增加了一段光平的锥体。

Control Method of the Pre-Tightening Force of the Screw Threaded Connection and Getting of the Technology Parameters

螺纹联接预紧力控制及其工艺参数的确定

It is important and significant for controlling pre-tightening force to ensure the threaded connection. The paper introduces the pretightening force selection and controlling method, which can provide reference for actual operation.

控制预紧力的大小，对保证螺纹联接具有特别重要的意义，文中介绍了预紧力的选择及控制方法，可供实际使用中参考。

Looseproof technique of the threaded connection is the basic guarantee for the reliable work of the automatic production equipments.

螺纹连接防松技术是自动生产设备可靠工作的基本保证。

The main causes is analysed for looseness of the threaded connection on pumping unit crank pin and the corresponding preventive measures are proposed.

分析抽油机曲柄销螺纹联接在使用中发生松动的主要原因，并提出相应的预防措施；

The conclusion that J-value changes with the change of thread parameters in optimum torque wrench moment. Controlling slack level of threaded connection by controlling J-value cannot ensure threaded connection is in optimum state.

认为在最佳上扣扭矩条件下，J值大小随螺纹参数变化而改变，用控制J值来控制螺纹的上紧程度是不能保证螺纹连接处于最佳状态的。

Development and application of high-strength drill collar threaded connection

高强度钻铤螺纹的研制及应用

Stress and Sealing Property Analysis of Premium Threaded Connection

特殊扣套管接头的应力及密封特性分析

In order to facilitate the installation and removal of threaded connection valves, piping system at the appropriate location can be used on pipe joints.

为了便于安装和拆卸螺纹连接的阀门，在管路系统的适当位置上可用管接头。

Real time monitor of casing thread makeup torque is one of important means to improve the quality of casing threaded connection during the process of casing-runing.

在下套管作业过程中，对套管紧螺纹扭矩的实时监控是提高套管螺纹联接质量的重要方法之一。

A Study on the Test Method of Threaded Connection's Looseness-proof Function

螺纹联接防松性能的一种测试与评价新方法

Pretightening Force Control for Threaded Connection

螺纹联接的预紧力控制

If inlet end adopt socket weld and outlet end adopts threaded connection, use "U" to express connection unit "S".

如进口端采用承插焊，出口端采用螺纹，则连接单元“S”用“U”表示。

Study on the SMA Used in the Threaded Connection's Looseness-Proof, Anti-broken and Even-load

形状记忆合金在螺纹联接防松防断均载调节中的研究

The deformations, stresses and strains in the sealing section, shoulder zone, thread surface and tubing body are calculated for the threaded connection under axial tensile loads and internal pressures.

获得了这种特殊扣套管接头密封段、台肩面、螺纹啮合扣面以及管体的应力分布。

The accuracy of thread inspection and quality of threaded connection will be influenced by burrs resulted from the thread cutting process of tubing and casing.

油井管螺纹切削加工中产生的毛刺会直接影响螺纹检验的准确性和螺纹连接质量。

Nowadays, to acquire control method of the technological parameter for the different pretightening force of the screw threaded connection, we often use experience formulae or by calculating what the experience data we chosen.

目前，螺纹联接不同预紧力控制方法的工艺参数多是用经验公式、选择经验数据计算得到，使得预紧力离散度较大。

Threaded connection is widely used in the rolling stock industry. According to different practical problems, different customers have different requirements on the performance, parameters and materials of the threaded connection.

螺纹联接件在机车车辆行业中应用广泛，不同客户根据不同的实际问题，对螺纹联接件的性能、参数以及材料有不同的要求。

Therefore, it is unscientific that for user to judge slack level of threaded connection of tubing or casing by J-value.

用户以J值判定油、套管螺纹连接松紧程度是否合格是不科学的。

Allowance Design for Threaded Connection and Transmission

螺纹联接与传动的容差设计

The cone and the hand are in threaded connection.

锥体和手柄螺纹连接。

Experimental research on stress intensity factor for surface crack at external thread root of threaded connection

螺纹联接外螺纹牙底表面裂纹应力强度因子的实验研究

With this threaded connection method, so that the two parts together into one.

利用这种罗纹联接方式, 使二个部件合为一体.

A study on load distribution at a drill collar threaded connection

钻铤螺纹联接处载荷分布规律研究

According to connection method classification ( 1) threaded connection valves: valve with internal thread or external thread, and pipe thread connection.

按连接方法分类（1）螺纹连接阀门：阀体带有内螺纹或外螺纹，与管道螺纹连接。

The patent of the HS-RTC is of a solution to enhance connection strength with the black threads of the round threaded casing.

HS-RTC专利是利用圆螺纹套管的黑皮螺纹参加连接来提高连接强度的；

Study of Parameterized Modeling for Threaded Connection Based on UG

基于UG的螺纹连接件的参数化设计研究

The metal to metal seal method was applied to the threaded connection;

井下油管柱的连接丝扣宜采用金属对金属密封扣；

The cone bottom of the treatment head is connected to one end of the handle body by a connecting tube, while the other end of the handle body is in threaded connection with the hand grip.

杆体呈圆柱形，治疗头的锥体底部与杆体一端由一个连接管连接在一起，杆体的另一端与把手之间为螺纹式连接。

Pipes connecting water tank in basement and connecting pumps and water tank on roof are composite metal plastic pipes and threaded connection.

地下室水箱间与生活泵至屋顶水箱之管材采用钢塑复合管及管件丝扣连接；