The process of checking with iron powder
(1) Preparation of specimens
(2) Selection of method
(3) magnetization
(4) Detection
(5) Interpretation of indications
(6) Final Cleaning
(7) Demagnetization
before checking with powder. steel Must check the accuracy of instruments and equipment, including the audit need to be knowledgeable. And through training as well. The area must be inspected. Facilities and adequate lighting. To check that the specimens should be examined on a table, iron, steel, or other material. This will cause the magnetic field on the surface uneven.
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