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要知道金屬材料内部有沒有缺陷,利用超声波探伤器来探测,是一个很有效的方法。过去我国不能生产超声波探傷器。1955年,第一机械工業部436厂八級电訊工吳繩武同志,刻苦鑽研,終於把超声波探伤器初步仿制成功。超声波是一种听不見的声音,它的频率比普通声波要高。它能穿透金屬,并且能被金屬内部的縫隙和金屬的他端反射回来。超声波探伤器就是利用超
To know if there are any defects inside the metal material, using ultrasonic flaw detectors is a very effective method. In the past, we could not produce ultrasonic flaw detectors. In 1955, Comrade Wu Shengwu of the No. 436 Factory of the No. 436 Factory of the Ministry of Machinery Industry worked assiduously and finally succeeded in copying the ultrasonic flaw detector. Ultrasound is an inaudible sound, and its frequency is higher than ordinary sound waves. It penetrates the metal and can be reflected back in the gaps inside the metal and the other end of the metal. Ultrasonic flaw detector is to use ultra