1、 FORD LABORATORY TEST METHOD BI 157-05 Date Action Revisions 2001 03 20 Revised Editorial no technical change A. Cockman 1991 11 20 Printed copies are uncontrolled Page 1 of 4 Copyright 2001, Ford Global Technologies, Inc. CHIP RESISTANCE TEST FOR PAINTED PANELS Application This test method is used
2、to determine the relative chipping resistance of paint applied to body surfaces. Apparatus Required Paint Chip Resistance Tester (Gritometer) - Model 755 Source: Ford Motor Company Body & Chassis Engineering P.O. Box 2053, Rm 1064 Dearborn, MI 48124 USA Tel: 313-323-1477 Evaluation Standards Ten 8 1
3、/2 x 11 inch colored photographs Source: Ford Motor Company Global Materials & Fastener Standards 20000 Rotunda P.O. Box 3033 Dearborn, MI 48121-2053 USA Tel: 313-337-6836 Materials Required Chilled Iron Grit “Diamant“ Angular, 4 - 5 mm size, rust free. DIN 8201 Source: Eisenwerke Wurth Gmoh D-7101
4、Bad Fredrichshall/Jagstfeld Germany FORD LABORATORY TEST METHOD BI 157-05 Page 2 of 4 Copyright 2001, Ford Global Technologies, Inc. Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative hu
5、midity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Procedure 1. Age test panels according to applicable engineering material specification. 2. Blast the test panels at a steady uninterrupted period of 20 - 30 seconds with 270 cc of the iro
6、n grit using an air pressure setting of 275 kPa. 3. Evaluate tested panels by comparison to Figures 1 through 10 on pages 3-4, or by using colored standard photographs. 4. The paint chip resistance tester (Gritometer) at Ford Motor Co., Body Engineering, is the standard to which all Gritometers must
7、 conform in effectiveness. For standardization, air pressure may require adjustment to show equivalent results to the Ford Gritometer. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and ha
8、ndling in its facilities. FORD LABORATORY TEST METHOD BI 157-05 Page 3 of 4 Copyright 2001, Ford Global Technologies, Inc. CHIP RESISTANCE TEST FOR PAINTED PANELS Rating 1 Rating 2 Rating 3 Rating 4 Rating 5 FORD LABORATORY TEST METHOD BI 157-05 Page 4 of 4 Copyright 2001, Ford Global Technologies, Inc. CHIP RESISTANCE TEST FOR PAINTED PANELS Rating 6 Rating 7 Rating 8 Rating 9 Rating 10
