Etch Inspection

This 16 hour course is designed for manufacturers, service organisations and overhaul agencies who require their technicians or engineers to be trained in the process of Etch Inspection. The course includes all common applications of etch inspection to Nickel Base and Titanium Alloys and Surface Temper. Applications of both chemical and electrochemical processes are included.

Safety practices are emphasised in this course which meets the needs of all known qualification and certification programs at Level II, and includes 50 per cent hands-on etch inspection and interpretation of results for defective and good specimens.

The course shall include, but not be limited to :

• Grain formation theory.

• Chemical etch theory.

• Electro chemical etch theory.

• Nickel base alloy anodic etch.

• Titanium etch anodisation.

• Surface temper etch.

• Surface temper inspection.

• Etch process practical.

• Etch result interpretation.

• Types of discontinuities discernible in materials.

• Acceptable standards.

1. At the conclusion of this course the student should be able to:

2. Understand the fundamental processes of etch inspection for grain determination, discontinuity evaluation and the detection of grinding abuse;

3. Carry out examination of specimens of all types following grinding to detect grinding abuse;

4. Control chemical etch processes to maintain correct etch.

5. Recognise different discontinuities which may be revealed by etch inspection;

6. Pass the end of course test.