| API8牙圆螺纹公差与上扣扭矩的试验选择 |
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| 引用本文： | 张毅 王长安. API8牙圆螺纹公差与上扣扭矩的试验选择[J]. 焊管, 1997, 20(4): 18-23 |
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| 作者姓名： | 张毅 王长安 |
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| 作者单位： | 中国石油天然气总公司管材研究所 |
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| 摘 要： | 在对ＡＰＩ标准分析的基础上，通过系统试验，找出了螺距，锥度，中径，接箍不圆度等叁数对ＡＰＩ８牙圆螺纹油管套密封性，连接强度及上扣扭矩－圈数相关性的影响，从而提出了内、外螺纹上扣配合的理想螺纹公差范围。
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| 关 键 词： | 油管 套管 接箍 螺纹连接 扭矩 公差 |
Test and Selection with the Tolerance of API 8th Roots Knuckle Thread and the Tighten up Torque |
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| Zhang Yi et al. Test and Selection with the Tolerance of API 8th Roots Knuckle Thread and the Tighten up Torque[J]. Welded Pipe and Tube, 1997, 20(4): 18-23 |
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| Authors: | Zhang Yi et al |
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| Affiliation: | Zhang Yi et al |
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| Abstract: | Based on API standard and a sevies of tests, the relationship of influence each other about the thread parameters, such as the thread hitch, slope of thread, pitch diameter of thread and coupling roundness tolerance, with the API 8th knuckle thread casing pipe's tightness, joint strength and tighten up torque with the number of turns are discovered, and the ideal thread tolerance suitable to the tighten up is pointed out. |
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| Keywords: | tubing casing collar threaded connection sealing property strength torque tolerance |
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