针对输送管道常见铁磁性物质堵塞提出了一种磁法检测方法。从机理上分析了磁法检测适用于铁磁性材料检测的可行性,采用自主研发的磁性探伤仪对输送管道人工堵塞缺陷和自然缺陷进行了验证。试验结果表明,磁法检测对输送管道常见堵塞物质铁钉、铁粉具有较好的检测效果。 Aiming at blockage of common ferromagnetic material in pipeline, a magnetic method was proposed. From the mechanism analysis, the feasibility of magnetic detection for ferromagnetic material testing is verified. The self-developed magnetic flaw detector is used to verify the artificial blockage and natural defects of the pipeline. The test results show that the magnetic detection method has a good detection effect on the nails and iron powder, which are common plugging substances in the pipeline.