FORD FLTM BI 022-1-2000 DETERMINATION OF ENAMEL SAG RESISTANCE.pdf
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1、 FORD LABORATORY TEST METHOD BI 022-01 Date Action Revisions 2000 08 31 Revised Editorial no technical change A. Cockman 1992 06 29 Printed copies are uncontrolled Pag e 1 of 6 Copyright 2000, Ford Global Technologies, Inc. DETERMINATION OF ENAMEL SAG RESISTANCE Application This test method describe
2、s the procedure to determine the relative sag resistance of exterior body enamel. Apparatus Required Automatic Paint Spray Machine Spraymation or equivalent Source: Sprayma tion Inc. Little Falls, New Jersey 07424 Oven Shall be capable of maintaining 130 +/ - 2 C. No. 2 Ford Cup Paint Film Thickness
3、 Tester Any reliable electromagnetic thickness gauge such as Autotest, Type MS. Source: Twin Cities International, Inc. 175 Pineview Drive Amherst, N.Y. 14150 (716) 691 - 8855 Materials Required Test Panels 300 x 450 mm Bonderite 40 Parker Test Panel (or equivalent). Source: Parker Division O.M.I. C
4、orp. 322 Main Street Morenci, MI 48256 (517) 458 - 2221 FORD LABORATORY TEST METHOD BI 022-01 Page 2 of 6 Copyright 2000, Ford Global Te chnologies, Inc. OR Formed Sag Test Panels Source: Advanced Coatings Technologies P.O. Box 310 273 Industrial Drive Hillsdale, MI 48242 (517) 439 - 1492 Control En
5、amel The enamel shall have been shown to exhibit sag resistance that is acceptable for production. Enamel Solvent Xylol or equiva lent. Caution: Low flash point; refer to Industrial Hygiene for health and safety comments. Conditioning and Test Conditions All test values indicated herein are based on
6、 material conditioned in a controlled atmosphere of 23 +/ - 2 C and 50 +/ - 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Procedure 1. Prepare sag test panels (refer to Figure 2). . Drill a 6 mm hole as shown in Figure
7、2. . Form the simulated ch aracter line by back bending the middle angle to 90 degrees and back bending the two side angles to 135 degrees. (The distance from the base of the triangle to the apex is approximately 35 mm.) Note: Refer to the “Materials Required“ section for preform ed sag test panels.
8、 12. Reduce both the control enamel and the test enamel to 38 +/ - 2 s using a No. 2 Ford Cup (unless otherwise specified by the applicable Manufacturing Process Standard or Engineering Material Specification). The control enamel should be taken from a previous batch of the same color known to be sa
9、tisfactory. 12. Apply the control and the test enamels with an automatic spray machine to separate sag test panels at 23 +/ - 2 C. FORD LABORATORY TEST METHOD BI 022-01 Page 3 of 6 Copyright 2000, Ford Global Te chnologies, Inc. 12. Set the Spraymation as follows: . “A“ position (i.e. approximatel y
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