钛焊管涡流探伤噪声信号分析

Analysis on Noise Signal of Titanium Welded Pipe

通过控制钛焊管生产工艺参数,得到13支试验用钛焊管,采用金相组织观察、X射线测厚两种方式对试验用钛焊管进行分析.采用涡流探伤仪对钛焊管进行逐根探伤,并对涡流探伤结果进行统计分析.分析结果表明:钛焊管平均晶粒直径、壁厚波动值影响噪声信号幅值,在实际钛焊管生产过程中,应合理控制钛焊管平均晶粒直径、钛焊管壁厚波动值,以减小涡流探伤噪声信号幅值.

13 test titanium welded pipes are obtained by controlling the production process parameters of titanium welded pipes.The test titanium welded pipes are analyzed by observing the metallographic structure and measuring the thickness by X-ray.The eddy current flaw detector is used to detect the titanium welded pipes of the samples,and the results of eddy current flaw detection are statistically analyzed.Results show that the average grain diameter and wall thickness fluctuation can affect the noise signal amplitude.The amplitude of eddy current detection noise signal can be reduced by controlling the average grain diameter and wall thickness fluctuation of titanium welded pipe in industrial production conditions.