General Description Magnavis # 8A Red is ready to use, free flowing general purpose, dry method, colour contrast magnetic powders. These powders are used to locate surface and slightly subsurface discontinuities in ferrous structures.
# 8A Red is a red coloured powder, which produces sharp colour contrast indications on most surfaces and colored backgrounds.
Typical applications include welds, large forgings and castings, and where rough surfaces are encountered
The dry magnetic powders are composed of selected magnetic powders and pigments.
. *Temperature limits are not intended to imply that the material will not form magnetic particle indications above the specified temperatures. However, particles at elevated temperatures for a period of time may be altered in colour, sintered together or emit smoke. Particles heated to 480°C or passed through a flame will smoulder or spark.
Benefits Ready to use Coloured powder to suit contrast on most surfaces and coloured backgrounds
Method of Use Our dry method, non-fluorescent magnetic particles may be dispensed by the Powder Spray Bulb, a plastic squeeze bottle, or a powder blower. The powders must be applied while the magnetising current is on. If there is considerable background build-up, the excess material can be gently blown off while the current is flowing. Should the material being tested have a high retentivity, surface discontinuities can be detected after the current shot.
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