1、 FORD LABORATORY TEST METHOD BI 115-02 Date Action Revisions 2001 03 19 Revised Editorial no technical change A. Cockman 1990 12 04 Printed copies are uncontrolled Page 1 of 2 Copyright 2001, Ford Global Technologies, Inc. EVALUATION OF CATALYSED REPAIR PAINT ENAMELS Application This method is used
2、to determine color matching, hardness and intercoat adhesion of catalysed production enamels. Apparatus and Materials Required Mechanical Convection Oven Capable of maintaining a constant temperature of 180 +/- 2 C. Test Panels Steel body skin panels: Per ASTM D 609 or 1.50 x 300 mm having a surface
3、 finish of 1.35 +/- 0.45 microns Ra. Catalyst As specified in the appropriate Engineering Materials Specification. Percentage of catalyst as recommended by the supplier of the paint enamel. Masking Tape and Paper Color Matching Booth According to FLTM BI 109-01. Referenced Ford Laboratory Test Metho
4、ds BI 103-02 Preparation of Panels for Paint Tests BI 106-02 Intercoat Adhesion Test BI 109-01 Color Matching with Artificial Light BI 112-02 Tukon Hardness of Paint Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +
5、/- 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. FORD LABORATORY TEST METHOD BI 115-02 Page 2 of 2 Copyright 2001, Ford Global Technologies, Inc. Procedure 1. Prepare a test panel as described in FLTM BI
6、103-02, Method “C“. 2. Allow panel to cool to 23 +/- 2 C, and rebake for 10 minutes at 140 C metal temperature, or according to the relevant Engineering Materials Specification. Care must be taken to avoid touching the panel test surface with hands. 3. Mask off the upper half of the panel with paper
7、 and masking tape and respray the lower half with the catalysed enamel under test to a dry film thickness of 40 +/- 10 microns. 4. Remove the paper and masking tape, allow test panel to flash off for 3 minutes and bake according to the relevant Engineering Materials Specification. Evaluation 1. Afte
8、r cooling to 23 +/- 2 C compare repaired area with the unrepaired area of the test panel for color match with each other, according to FLTM BI 109-01. 2. After aging for either 72 hours at 23 +/- 2 C, or 16 hours at 45 +/- 2 C, check: a) Tukon hardness per FLTM BI 112-02 of the recoated areas on the test panel. b) Intercoat adhesion of the recoated areas of the test panel according to FLTM BI 106-01. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities.
