【摘要】本文主要介绍了超声波探伤无损检测技术的原理以及方法性能,由于其具有灵敏度高、穿透力强、使用简单成本低、无污染检测效率高等优点,在实际检测中得到越来越多的应用。为了解决黄铜药筒的缺陷检测,就采用超声波无损探伤技术,但由于无法直接检测,就运用铅模覆盖法制造标准体,通过对标准体进行超声波无损检测,达到检测黄铜药筒的目的。
【关键词】超声波无损检测;标准体;铅模覆盖法
【DOI编码】10.3969/j.issn.1674-4977.2023.04.036
Application of Ultrasonic Testing and Lead Model Covering Method in Brass Medicine Cylinder Testing
JI Hong
(Xingcheng Inspection and Testing Center, Xingcheng 125100, China)
Abstract: This article mainly introduces the principle and performance of ultrasonic non-destructive testing technology. Due to its high sensitivity, strong penetration, simple and low-cost use, high efficiency, and no pollution, it has been increasingly used in practical testing. To solve the defect detection of brass shells, ultrasonic non-destructive testing technology is used. However, as direct detection is not possible, the lead model covering method is used to manufacture a standard body. Through ultrasonic non-destructive testing of the standard body, the purpose of detecting brass shells is achieved.
Key words: ultrasonic non-destructive testing; standard body; lead model covering method
超声波探伤检测技术作为一种常见的金属损伤的检测技术,由于其具有在损伤检测中灵敏度高,穿透力强,使用简单成本低,无污染检测效率高等优点,故在实际中有较广的检测应用范围。黄铜药筒的裂痕、夹杂和夹层、道线深度,一直是影响企业产品质量的关键问题,但在生产过程中,铜壳体内的这些毛病是人肉眼很难发现的。为了提高产品质量,加强检测手段,企业决定启用对药筒进行超声波探伤的方法来解决这些问题。
超声波检测是指用超声波对材料和工件进行的一种无损检测方法,超声波是指振动频率大于2万赫兹的声波,这种波能在大多数材料(包括钢材)内穿透传播折射或反射和波形转换,利用超声波的物理特性就可以制成仪器,来探测材料内部的缺陷[1]。超声波探伤的特点是灵敏度高(尤其对裂纹性质的线状缺陷较敏感)设备轻便、使用简单、耗费低廉、无污染、检测速度快以及便于进行计算机处理,用于探伤检测的超声波频率1.5~5兆赫。……