随着化学工业的飞速发展,要求机械工业支援化工设备与附件的任务显得更为迫切。为确保设备的安全运行,除了必须严格控制材质使之符合理化性能的要求外,还须进行无损检验,以避免危险缺陷的存在。这对防止因缺陷存在而报废工件、浪费加工工时和影响生产周期来说具有现实意义。本文介绍了我厂在开展毛坯锻件的超声波探伤所作的一些试验结果,提供有关单位参考。耦合剂选择与探头保护膜的改进超声波在介质中传播遇到异质界面所产生的反射等特性为脉冲反射式探伤奠定了基础。通常金属工件 With the rapid development of the chemical industry, the task of requiring the machinery industry to support chemical equipment and accessories is even more urgent. In order to ensure the safe operation of the equipment, in addition to strict control of the material to meet the requirements of physical and chemical properties, non-destructive testing is also required to avoid the existence of dangerous defects. This is of practical significance to prevent scrapped workpieces due to defects, waste of processing man-hours and impact on the production cycle. This article describes some of the experimental results of our factory in the ultrasonic testing of rough forgings to provide relevant units for reference. Coupling agent selection and the improvement of the probe protection film Ultrasound wave propagation in the medium encountered reflection and other characteristics of the heterogeneous interface lays a foundation for pulse reflection flaw detection. Usually metal parts