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1.15 Repair methods
Do not brush the area to be examined before carrying out a
crack test as this will fill up the cracks!
Procedure:
1. Expose the damaged area and clean the surface.
2. Apply the penetrating agent with an aerosol spray can. The
penetrating agent will permeate into the apertures in the
surface by capillary action. Allow the penetration agent to
take effect - observe the correct length of time.
3. Use a detergent to completely remove any excess
penetrating agent that has not permeated into the damaged
surface.
4. Spray on developer and allow it to act. The damaged area
becomes visible.
Check the areas for cracks. If a component reveals any cracks,
it must be replaced.
If a weld seam contains cracks, it must be reworked. All cracks
must be ground out and re-welded. In this case, the crack test
will have to be repeated.
In general, however, only faults in the material surface or
communicating directly with the surface are detectable.
Copyright ©
2010
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