无缝钢管涡流超声波联合探伤装置的研制

发布时间：2018-04-22 00:26

本文选题：涡流超声波联合探伤 + 电控系统设计　；参考：《哈尔滨工业大学》2016年硕士论文

【摘要】：无缝钢管主要应用于石油、化工、轮船、锅炉与军工等重要场合,若其出现缺陷将会造成灾害性灾难,这就对无缝钢管的无损检测等技术提出了更高的要求,无损检测技术已成为生产厂家保证产品质量、提高产品质量竞争力的重要手段。因此,无损检测技术成为无损检测和工程界重点研究的热点之一。在无缝钢管众多检测方式中,超声波检测由于具备大深度检测、可对缺陷准确定位并可对钢管内部裂纹、叠层、分层等平面状缺陷具有较强的检出能力等优点而受到广大厂家欢迎。但是超声检测由于其原理本身的限制而无法对无缝钢管表面缺陷进行检测;点式探头涡流检测由于受涡流集肤效应的影响对无缝钢管表面、近表面缺陷比较敏感,但其却无法检测内部缺陷。因此,利用涡流检测、超声检测各自的优点实现联合探伤,既可弥补涡流或超声波单一检测方式对伤型漏检的缺点,实现对无缝钢管内外部缺陷的全面检测,又可以在生产过程中节约检测时间,提高检测效率。本文在对大量国内外相关文献综述分析的基础上,通过对ET(eddy current test)、UT(ultrasonic test)检测原理的分析,提出了针对Ф100mm-Ф273mm无缝钢管的联合探伤测具体方案。钢管螺旋前进,涡流、超声波探头跟踪钢管曲面,对钢管进行100%的扫描式探伤;对Ф100mm-Ф273mm无缝钢管的涡流、超声波联合探伤装置的总体方案进行了论述,给出了电气控制系统设计方案,并采用S7-PLCSIM仿真软件,对设计的电控系统软件进行了仿真,节约了装置的现场调试时间;对涡流、超声波检测探头技术指标的设计方法进行了探讨,确定了涡流探头的直径、超声波探伤水层厚度以及超声波探头K值,并依据项目要求设计出涡流、超声波探头跟踪系统;通过现场验证,Ф100mm-Ф273mm无缝钢管涡流、超声波联合探伤装置达到了厂家要求的技术指标。
[Abstract]:Seamless steel pipe is mainly used in petroleum, chemical industry, ship, boiler and military industry and other important occasions, if its defects will cause disastrous disaster, this puts forward higher requirements for seamless steel pipe non-destructive testing and other technologies. Nondestructive testing technology has become an important means for manufacturers to ensure product quality and improve the competitiveness of product quality. Therefore, nondestructive testing (NDT) technology has become one of the hot topics in the field of NDT and engineering. Among the many inspection methods of seamless steel pipe, ultrasonic detection can locate the defect accurately, and the internal crack and lamination of steel pipe can be accurately located by ultrasonic detection because of its deep detection. Delamination and other planar defects with strong detection ability and other advantages are welcomed by the majority of manufacturers. However, ultrasonic testing can not detect the surface defect of seamless steel tube because of the limitation of its principle, and the eddy current detection of point probe is sensitive to the surface defect of seamless steel tube because of the effect of eddy current collecting skin effect. But it can not detect internal defects. Therefore, using eddy current testing and ultrasonic testing to realize joint flaw detection can not only make up for the shortcomings of eddy current or ultrasonic single detection to the defect of wound type, but also realize the comprehensive detection of internal and external defects of seamless steel pipe. In the production process can save testing time, improve detection efficiency. Based on the analysis of a large number of related literatures at home and abroad, and through the analysis of the detection principle of ET(eddy current test, a concrete scheme of joint flaw detection for 100mm 273mm seamless steel pipe is put forward in this paper. The helical advance of steel tube, eddy current and ultrasonic probe are used to track the curved surface of steel tube, and 100% scanning type flaw detection is carried out on the steel pipe, and the overall scheme of the eddy current and ultrasonic combined flaw detection device for 100mm 273mm seamless steel pipe is discussed. The design scheme of electrical control system is given, and the software of electronic control system is simulated by S7-PLCSIM software, which saves the debugging time of the device. The design method of the technical index of ultrasonic detection probe is discussed, the diameter of eddy current probe, the thickness of ultrasonic flaw detection water layer and the K value of ultrasonic probe are determined, and the tracking system of eddy current and ultrasonic probe is designed according to the requirements of the project. Through field verification, the eddy-current and ultrasonic combined flaw detection device of 100mm- 273mm seamless steel pipe meet the technical requirements of the manufacturer.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH878.2

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