METHOD OF MAGNETIC POWDER FLAW DETECTION AND DEVICE IMPLEMENTING IT Russian patent published in 2023 - IPC G01N27/84 

FIELD: magnetic powder inspection.

SUBSTANCE: essence of the invention lies in the fact that an electromagnet is installed on the surface of the controlled product with an indicator package fixed in its elastically deformable spring clamps, made of non-magnetic material and filled with a magnetic suspension; exposure to an alternating magnetic field of an electromagnet on a controlled product; detection of an indicator trace of a defect in the form of a roll of magnetic powder in the indicator package as a result of the interaction of the magnetic field with the material of the product in the image control zone; visual observation of this trace on a recording device with increased resolution and its recording in the memory of the microprocessor of the recording device, while the indicator package with an elastic deformable frame supporting it from below is installed with the lower thin elastic side on the controlled area of the surface of the product, and the outer flat elastic deformable side of the package and placed underneath under the bag, the frame is springily installed parallel to the surface of the product being inspected, ensuring the same thickness of the suspension layer in the bag over the entire inspected area of the product.

EFFECT: providing the ability to increase sensitivity, productivity, and reliability of control.

5 cl, 4 dwg