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超声波探伤仪是利用超声波在介质中的传播特性,对钢轨、车轴及其它金属部件进行无损探测的一种脉冲反射式电子仪器。它能探测金属部件的裂纹、缝隙、壁裂、夹渣、白核等缺疵。超声波探伤仪由脉冲反射式探伤仪、探头、电源组成。 1、脉冲反射式探伤仪:它是超声波探伤仪的重要组成部分。产生重复脉冲频率馈送至探头,向钢轨、车轴及其它金属部件发射超声波,当超声波遇到伤痕时,将接收到伤痕脉冲加以放大,显示在示波管萤光屏幕上,并放出可闻的报井声。除示波管外,全部采用晶体
Ultrasonic flaw detector is the use of ultrasonic propagation in the medium characteristics of the rails, axles and other non-destructive detection of metal parts of a pulse-reflection electronic equipment. It can detect metal parts of the cracks, cracks, wall cracks, slag, white and other defects. Ultrasonic flaw detector by the pulse reflection flaw detector, probe, power supply. 1, pulse reflection flaw detector: it is an important part of ultrasonic flaw detector. Produce repetitive pulse frequency feed to the probe, the rail, axles and other metal parts emit ultrasonic waves, when the ultrasonic encounter scars, will receive a pulse of injury to be amplified, displayed on the CRT screen and emit audible newspaper Well sound. In addition to the oscilloscope, all with crystal