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SOLUTIONS: Evaluation of welds

Crack Detection

By using dye penetrant we can detect surface cracks not readily visible to the eye. The dye penetrant kits consist of a cleaner to clean the surface for grease and oil, a dye penetrant that penetrates down in cracks and porosity, and a developer.

It is a low cost and easy to use, inspection method.

There are also other non-destructive methods. For detection of internal porosity, cracks and slag inclusions radiographic and ultrasonic methods must be used, but they require specialised personnel and equipment.

Step 1)

Remove surface rust, scale, paint by mechanical means, spray cleaner to degrease the inspection area. Leave to dry.

Step 2)

Spray penetrant over the area and allow to soak for about ten minutes.

Step 3)

Remove all excess penetrant using a dry cloth and wipe dry.

Step 4)

Spray developer evenly over the inspection area and wait a few minutes until the area dries white. Any surface defects will appear in red contrast.

2.10

Dye Penetrant Inspection product Product description Magna Flux Crack detection kit*

Unit

Product no.

Set

096-653535

* Kit comes in convenient Shoulder carry case and consist of: 3 pcs. Cleaner, 2 pcs. Penetrant, 3 pcs. Developer, 1 pcs. Cloth.

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