Demagnetization technology for thick walled alloy steel pipes after magnetic i……
Based on the characteristics of thick walled alloy steel pipes in eddy current and magnetic flux leakage non-destructive testing, the reason for residual magnetism in the testing process of thick walled alloy steel pipes was analyzed. A new demagnetization method is proposed for alloy materials that are difficult to demagnetize. In practical application, the problem of demagnetization difficulty in non-destructive testing of thick walled alloy steel pipes has been solved, and the effect is obvious. In eddy current and magnetic flux leakage non-destructive testing, it is necessary to add a magnetic field to magnetize the steel pipe due to testing […]