FF-IIIAD-38 Shot Peen Dry Tracer (in One Pint Can**)
** Must be mixed by user. In order to save on shipping costs this item is shipped in powder form. It must be mixed with one pint of methyl ethyl ketone (MEK) supplied by the user before use. ** See below for directions. Call 1-800-288-3647 if you require cans already containing MEK.
Shot Peening improves metal and weldment resistance to fatigue, stress corrosion cracking and galling. To provide this benefit, it is important that shot peen coverage be uniform and complete. A liquid tracer provides a coating which is removed at a rate proportional to peening coverage, providing visual feedback on the uniformity and completeness of peening coverage. A fluorescent tracer, has in addition, a pigment which fluoresces under ultraviolet light making the determination of the degree or percentage of coverage quick, easy and foolproof. Use of this tracer eliminates the need for 200-percent coverage in order to be assured of complete peening.
Specification Compliance: MIL-S-13165 General Electric Aircraft Engines Specification D50TF9 Class A
Shelf Life: 2 years
Boiling Point: 175.3° F (79.6° C)
Flash Point: 20° F (-6.7° C)
Percent Volatiles: 90
*Must be mixed by user. In order to save on shipping costs this item is shipped in powder form. It must be mixed with one pint of methyl ethyl ketone (MEK) by the user before use.
If the part is not properly pre-cleaned, tracer results may be erratic. When magnetic particle or dye penetrant inspection is required, parts should be inspected before peening. If these inspections are conducted after peening, they may not be able to locate discontinuities.
1. Open can and pour in 1/2 pint of MEK.
2. Shake vigorously for 3-5 minutes.
3. Pour in another 1/2 pint of MEK.
4. Shake again, ready to use.
5. Coat test piece and let dry.
6. Shot peen.
7. Inspect with black light.
8. There should be no FF-IIIAD if shot peening is complete.
Clean the parts to be peened. Prepare a control specimen of the actual work piece. Coat this control specimen with Fluoro-Finder by dipping, spraying or painting. Allow a few moments for the coating to dry. Check the control in a darkened area under a 400nm UV (black) light to insure that the area to be peened has been completely covered. The control is then shot peened using the correct intensity and parameters specified for complete coverage. After peening the control is reexamined under UV light. Full coverage is indicated by complete removal of the tracer. Coverage of actual production pieces can be established using the same procedure for each part or on a statistical sampling basis. Often production peening is done under a UV light. As the peening progresses, it removes the Fluoro-Finder film, causing the glow to fade. Complete disappearance of the fluorescent glow indicates 100-percent coverage.