The Ultrasonic Testing of Near Surface Defects of Forgings
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摘要: 为了提高锻件的近表面缺陷的超声检测精度,采用三种类型的探头对不同试块的近表面缺陷进行超声检测对比试验.试验结果表明,在兼顾检测灵敏度和检测盲区的情况下,高频窄脉冲延迟块探头能成功检测出距平面表面1 mm的0.8 mm的平底孔,达到了满意的检测效果,可为此类缺陷的工程检测提高参考.Abstract: A contrast experiment on ultrasonic testing of near surface defects for important forgings was conducted by using three types of probes.The experimental results show that the high-frequency and narrow-pulse delay probe can successfully detect 0.8mm flat bottom hole of 1 mm beneath the flat surface.The testing effect is satisfactory.
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Keywords:
- High sensitivity /
- Ultrasonic testing /
- Near surface defects
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[1] 郑晖,林树青.超声检测[M].北京:中国劳动社会保障出版社,2008. [2] 王少军,俞厚德,钱耀洲,等.基于超声散射法的微小缺陷及近表面缺陷的检测[J].无损检测,2014,36(1):53-57.
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