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时间:2011-04-11 09:00来源:蓝天飞行翻译 作者:航空
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 Corrosion Resistant Mixing Proportions Table 701
 S 627-203
 (2)  Do not use the corrosion resistant finish until a minimum of 1 hour after you mix it.
 NOTE: The maximum usable life of the corrosion resistant finish is
____ 8 hours at 75° | 5° F (23.9° | 2.8° C).
 (a)  Immediately after you mix the corrosion resistant finish, write the date, the time you mixed the finish, and the usable life expiration on the containers. 1) Keep the containers with the corrosion resistant finish
 tightly closed until you use it or the finish will become thicker.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-11-00
 ALL  ú ú 02 Page 729 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 627-204
 (3)  
To apply the corrosion resistant finish, use the brush procedure or spray gun procedure as follows:

 (a)  
For the brush procedure (applicable for small areas), do the steps that follow: 1) Apply a thin layer of corrosion resistant finish


 (approximately 0.0005 inch) with a soft bristle Brush to apply the finish.
 NOTE: Move the brush in one direction as much as possible.
____
 a)  To prevent air bubbles, spaces and removal of finish already applied, do not move the brush quickly or too many times when you apply the corrosion resistant finish.
 2)  Let the corrosion resistant finish dry for a minimum of
 30 minutes. 3) Apply a second thin layer like the first layer. 4) Make sure the corrosion resistant finish you applied makes
 an overlap with all adjacent topcoat applied before.
 (b)  For the spray gun procedure (recommended for large areas), do the steps that follow: 1) Set the spray gun to 40 psi air pressure and 5 to 10 psi
 fluid pressure. 2) Apply the corrosion resistant finish with a spray gun on the surface. 3) Let the corrosion resistant finish dry for a minimum of
 30 minutes. 4) Apply the second layer like the first layer. 5) Make sure the corrosion resistant finish you applied makes
 an overlap with all adjacent topcoat applied before.
 S 117-205
 (4)  Clean the equipment and tools after you apply the corrosion resistant finish (topcoat).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-11-00
 ALL  ú ú 02 Page 730 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 WARNING: DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR YOUR
_______ SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
 (a)  
Clean the equipment with solvent, Series 81 immediately after use.

 (b)  
Soak the brushes in solvent, Series 81 immediately after use.


 NOTE: Discard the brushes when the bristles become rigid.
____
 S 627-206
 (5)  
Cure the corrosion resistant finish.

 (a)  
Cure all finish layers, refer to the table below (Table 702).

 (b)  
The cure time can decrease if you increase the temperatures and, with some finish compounds, increase relative humidity (Fig. 702 thru 705).

 (c)  
Do the solvent, Series 82 or fuel resistance check that follows to make sure the cure is complete. 1) Soak a 4-inch square pad of cheesecloth with solvent or


 fuel. 2) Apply the pad to the surface you check and let the solvent or fuel soak the area. 3) Use hard pressure and rub the area 100 strokes.
 NOTE: Count each movement in one direction as a stroke.
 
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