1、 FORD LABORATORY TEST METHOD BI 009-05 Date Action Revisions 2001 03 13 Revised Editorial no technical change A. Cockman 1992 06 17 Printed copies are uncontrolled Page 1 of 3 Copyright 2001, Ford Global Technologies, Inc. BEND TEST FOR COATING ADHESION Application This is a test for coating adhesio
2、n using a precoated steel panel and bending on a bending die. 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 humidity for not less than 24 h prior to testing and tested under the sam
3、e conditions unless otherwise specified. Procedure 1. Select a precoated specimen and shear to 95 x 300 mm. The length must be parallel to the rolling direction. 2. Place the panel coated side up, over a steel bending die which must be three times the thickness of the panel. The radius must be 1/2 i
4、ts thickness. 3. Bend the panel transversely and at midpoint of the length (See Figures 1 and 2). 4. Bend to 180, applying the bending load smoothly without shock. 5. When the bending is completed, examine the convex surface for any flaking of the coating. Disregard 1/4 inch from each edge. Chemical
5、s, 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. FORD LABORATORY TEST METHOD BI 009-05 Page 2 of 3 Copyright 2001, Ford Global Technologies, Inc. BEND TEST FOR COATING ADHESION Semi-Guided Bend Test Figure 1 FORD LABORATORY TEST METHOD BI 009-05 Page 3 of 3 Copyright 2001, Ford Global Technologies, Inc. BEND TEST FOR COATING ADHESION *No Coating Flaking Allowed Within This Area Figure 2
