摘要
通过调整超声波检测参数,研究分析ZG0Cr13Ni4Mo铸钢件检测反射回波波幅与超声波检测参数变化的关系。试验结果表明,探头频率、直径对对回波增益产生较大影响,当铸钢件壁厚<75 mm时,宜选用频率为2.5 MHz;当壁厚≥75 mm时,宜选择频率为2.25 MHz,探头晶片直径为20 mm较佳。
The paper studies and analyses the change relationship between the echo waveforms amplitude and various ultrasonic testing parameters of ZG0Cr13Ni4Mo casting steel testing by adjusting ultrasonic testing parameters.Experiment results show that the variations of frequency or diameter of ultrasonic transducer have great impact on echo waveform amplification.Frequency of 2.5MHz is suitable for ultrasonic testing when wall thickness is less than 75mm,and frequency of 2.25MHz is suitable when wall thickness is more than 75mm.Diameter of probe wafer is 20mm better.
出处
《湖南电力》
2011年第3期50-52,共3页
Hunan Electric Power
关键词
水电站
马氏体不锈钢铸钢件
超声波
回波
hydroelectric plant
martensitic stainless steel
ultrasonic
echo waveform
