Position the yoke with legs flush with test surface where the inspection was performed. Once legs are both flush in that area, turn on the yoke, twist in 90-degree direction while pulling away from the test surface at a minimum of 18", with the yoke still energized. After reaching 18", you can turn off the AC Yoke. Check test surface with Gauss meter. Repeat the process until there is no residual magnetism left in the part. Also, reference and follow the prescribed procedure for the allowable residual field.
Thanks for the video. Just a reminder that ASTM E1444 requires that the magnetizing current flows until you have blown off excess powder for the continuous method.
You should demonstrate the limited capabilities of a single leg field, the inspections are similar to parallel magnetism in that if positioned correctly, you can get 2 directions at approximately 90degrees to each other, but has to be "for information only" because of the lack of proven/ accepted studies. This is obviously only useful in areas that you physically *cant* do anything else, and are hoping for *some* warm and fuzzy.
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How do you de-mag using the yoke if it is AC only?
Position the yoke with legs flush with test surface where the inspection was performed. Once legs are both flush in that area, turn on the yoke, twist in 90-degree direction while pulling away from the test surface at a minimum of 18", with the yoke still energized. After reaching 18", you can turn off the AC Yoke. Check test surface with Gauss meter. Repeat the process until there is no residual magnetism left in the part. Also, reference and follow the prescribed procedure for the allowable residual field.
Thanks for the video. Just a reminder that ASTM E1444 requires that the magnetizing current flows until you have blown off excess powder for the continuous method.
Can i use a yoke with 20b water soluble
You should demonstrate the limited capabilities of a single leg field, the inspections are similar to parallel magnetism in that if positioned correctly, you can get 2 directions at approximately 90degrees to each other, but has to be "for information only" because of the lack of proven/ accepted studies. This is obviously only useful in areas that you physically *cant* do anything else, and are hoping for *some* warm and fuzzy.
the illustration is not clear , and monotonous speaking , better if you explain with practicle method and live illustration