铸造2011，Vol.60Issue(7)：676-679,4.
铸钢件超声波衰减系数测量及其影响因素
Measurement and Influence Factors of Ultrasonic Attenuation Coefficient of Steel Casting
龙会国 1胡波涛1
作者信息
- 1. 湖南省电力公司科学研究院,湖南长沙410007
- 折叠
摘要
Abstract
Ultrasonic attenuation coefficient of ZG0Cr13Ni4Mo steel casting was tested and its influencing factors were analyzed. The results show that using linear relation of ln( Px) and x, where P is acoustic pressure and X is beam path, is a better method to measure the attenuation coefficient. Influences of the ultrasonic testing parameters including diameter, frequency of ultrasonic transducer on the attenuation coefficient are different. With the increase of the diameter, the attenuation coefficient firstly increases and then decreases, and the attenuation coefficient increases with the increase of frequency. Considering the influences of attenuation coefficient on the ultrasonic testing, low frequency and 20 mm diameter of ultrasonic transducer should be used in longitudinal wave probe ultrasonic testing.关键词
铸钢件/马氏体不锈钢/超声波/衰减系数/缺陷Key words
steel casting/martensitic stainless steel/ultrasonic testing/attenuation coefficient/defects分类
矿业与冶金引用本文复制引用
龙会国,胡波涛..铸钢件超声波衰减系数测量及其影响因素[J].铸造,2011,60(7):676-679,4.
