Page 43 - Liquid Penetration Inspection
P. 43
Diploma in Mechanical Engineering (Material)
LIQUID PENETRATION INSPECTION
www.pis.edu.my
Principles of liquid penetrant inspection
1. Temperature control
2. Penetrant quality control
3. Dwell quality control
The quality of a penetrant inspection is highly dependent on
4. Emulsifier path quality control
the quality of the penetrant materials used. Only products
5. Wash quality control
meeting the requirements of an industry specification, such
as AMS 2644, should be used. Deterioration of new
6. Drying process quality control
penetrants primarily results from aging and contamination.
7. Developer quality control
Virtually all organic dyes deteriorate over time, resulting in
a loss of colour or fluorescent response, but deterioration
can be slowed with proper storage.
peneraju • ilmu • sejagat
