| API螺纹紧密距测量和中径测量的比较 |
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| 引用本文： | 高连新,张毅. API螺纹紧密距测量和中径测量的比较[J]. 钢管, 2009, 38(6): 59-63 |
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| 作者姓名： | 高连新 张毅 |
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| 作者单位： | 1. 华东理工大学机械与动力工程学院,上海,200234;无锡国家高新技术产业开发区博士后科研工作站
2. 无锡国家高新技术产业开发区博士后科研工作站;无锡西姆莱斯石油专用管制造有限公司,江苏,无锡,214028 |
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| 摘 要： | API螺纹的紧密距和中径是两个重要的参数,这两个参数的公差互相影响、互相制约,目前传统的方法是将紧密距作为主要控制指标,对中径则不进行直接测量。分析了中径、锥度、椭圆度与紧密距之间的关系,指出采用紧密距控制不能完全反映螺纹的真实状况,不利于对螺纹质量的控制,并通过试验验证了这一结论。简要分析了中径测量的可行性,建议油套管生产厂和油田用户以检测螺纹中径代替紧密距。
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| 关 键 词： | API螺纹 中径 紧密距 公差 测量 |
Comparison between API Thread Stand-off Measurement and Middle Diameter Measurement |
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| Gao Lianxin,Zhang Yi. Comparison between API Thread Stand-off Measurement and Middle Diameter Measurement[J]. Steel Pipe, 2009, 38(6): 59-63 |
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| Authors: | Gao Lianxin Zhang Yi |
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| Affiliation: | Gao Lianxin1,2,Zhang Yi 2,3 (1. School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200234,China,2. Post-doctorial Scientific Research Station,Wuxi State Hi-tech Industrial Development Park,Wuxi 214028,3. Wuxi Seamless Oil Pipe Co.,Ltd.,China ) |
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| Abstract: | Being two critical parameters of API thread,the stand-off and the middle diameter have their tolerances interact and condition each other. Following the conventional measurement method,the stand-off is taken as the main controlled index,whereas no direct measurement is made to the middle diameter. Analyzed here in the article are the relationship between stand-off and such elements as middle diameter,taper and ovality. It is concluded that the actual state of the threads can not be fully identified by means... |
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| Keywords: | API thread Middle diameter Stand-off Tolerance Measurement |
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