摘 要
本文介绍了银亮钢棒近表面缺陷的超声波探伤方法，以解决宝山钢铁股份有限公司特殊钢分公司生产的SUJ2银亮钢棒的检测问题为实例，重点研究银亮钢棒近表面缺陷的超声横波探伤方法与技术的可行性，探讨了银亮钢棒超声横波探伤技术中的有关入射角、探测范围、水层等技术参数的数学表达式，分析了超声横波探伤技术中的有关入射角、探测范围、水层等技术参数在SUJ2银亮钢棒近表面缺陷探伤工艺中的选择原则，通过SUJ2银亮钢棒近表面缺陷探伤试验，验证了采用超声横波探伤技术对棒材近表面缺陷的探伤是一项有效的探伤方法，解决了宝山钢铁股份有限公司特殊钢分公司SUJ2银亮钢棒近表面缺陷的检测难题，满足了日本NSK公司对原材料SUJ2银亮棒材的质量要求。
关键词：银亮钢棒，近表面，超声探伤
Abstract
This paper introduces the silver-steel near-surface of the ultrasonic flaw detection method to solve Baosteel Company Limited Special Steel Brach production of SUJ2 silver-steel bar detection problem as an example, focuses on silver-steel bar near-surface defects of ultrasonic shear wave testing method and technical feasibility. On the silver-steel bar ultrasonic shear wave of the angle detection technology, detection range, the water distance, and other technical parameters of the mathematical expression. Analysis of ultrasonic shear wave technology in the detection angle, detection range, the water distance, and other technical parameters SUJ2 silver-steel bar near-surface defect detection in the process of selection principle. Through silver-steel bar near-surface defect detection testing, validation ultrasonic shear wave technology on the bar near -surface defect detection testing is an effective method to solve SUJ2 silver-steel Bar near-surface defect detection problems. The company meets NSK Japan for SUJ2 silver-steel bar quality requirements.
Keywords: Silver-steel bar，Near-Surface，Ultrasonic inspection
目 录
1 引言 ……………………………………………………………………………………1
2 棒材超声检测的理论基础 ……………………………………………………… 2
2.1 超声检测理论基础 ……………………………………………………………………2
2.2 棒材超声波探伤方法与原理 …………………………………………………………4
3 棒材超声探伤概况 …………………………………………………………………6
3.1 国内外棒材检测发展趋势 ……………………………………………………………6
3.2 冶金行业棒材超声探伤概况 …………………………………………………………6
3.3 棒材超声探伤标准的概况 ……………………………………………………………8
4 SUJ2棒材的质量控制现状分析 ………………………………………………8
4.1 SUJ2棒材生产工艺流程 ……………………………………………………………8
4.2 SUJ2棒材超声探伤工艺的分析 ……………………………………………………8
4.3 SUJ2棒材缺陷分布位置的分析 ……………………………………………………10
5 SUJ2银亮钢棒近表面缺陷超声探伤工艺方法的选择 …………………10
5.1 SUJ2银亮钢棒近表面缺陷的探伤方法 …………………………………………10
5.2 SUJ2银亮钢棒近表面缺陷的探伤原理 ……………………………………………10
5.3 探伤工艺的选择 ……………………………………………………………………13
6 SUJ2银亮钢棒超声横波探伤试验 …………………………………………13
6.1 试验条件的准备 …………………………………………………………………14
6.2 探伤灵敏度的调整 …………………………………………………………………15
6.3 试验结果 ……………………………………………………………………………16
6.4 水浸超声波探伤方法的现场应用 …………………………………………………16
6.5 结论 …………………………………………………………………………………17
参考文献 …………………………………………………………………………………18
致谢…………………………………………………………………………………………19
