Dye penetrant inspection is a method of defect detection which is often used in industrial production. So how does it process by Dandong Iron Foundry?

1. Clean up the surface

Clean up the surface to keep no dirt on it, such as oil, rust, chip,lacquer, etc

2. Dye penetrant

Spray the permeable uniformity on the surface, waiting for about 15 minutes after the spray finished.

3. Cleaning penetrant

The remover is used to clean surface, then dry with clean cloth.

4. display

Sprayed the developer on the distance 150mm-300mm of surface, then the defect will display after waiting for a few minutes.

5. Observation surface defects

Observation the surface until the size of trace does not change. Process multiple injuries if necessary.

6. The report inclued:

Drawing No. of product, material, surface stats and quantity;
Entrustment units, technical documents and inspection requirements;
Type and category of dye penetrant;
Inspection result with photos of process;
Signature of the inspector;

7. Removed the developer to clean up after all finished.

Dye penetrant inspection is used for casting plate, casting cover of iron castings and steel castings. It only based speticial requestment, doesn’t included in the process of common castings inspection.