1、 FORD LABORATORY TEST METHOD EU-BQ 009-02 Date Action Revisions 2000 11 09 Editorial no technical change A. Cockman 1994 02 28 Printed copies are uncontrolled Page 1 of 2 Copyright 2000, Ford Global Technologies, Inc. SEAL TEST FOR ANODISED ALUMINUM Application This test method is used to determine
2、whether an anodic coating on aluminum has been properly sealed. This method is applicable to steam sealed anodized aluminum. Apparatus and Reagents Required Dye Test Solution Dissolve 10 g Aluminum Green (Aluminium Grn GLW) in 1 litre of distilled water. The dye is sulphur dioxide (SO 2 ) stabilised
3、 and, therefore, the solution must be freshly prepared for each test. The dye solution must only be used once. The solid dye can be stored in cans, bottles or air tight plastic bags. Source: Messrs. Durand and Hugenin A.G. Basle, Switzerland Nitric Acid 40 % by weight. Perchlorethylene Ethyl Alcohol
4、 Distilled Water Soft Brush and Cotton Plugs 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 same conditions un
5、less otherwise speci fied. FORD LABORATORY TEST METHOD EU-BQ 009-02 Page 2 of 2 Copyright 2000, Ford Global Technologies, Inc. Procedure 1. Clean anodic film with perchlorethylene and then wash with a cotton plug soaked with the alcohol. 2. Dip in the nitric acid for 30 minutes at 21 - 25 C. 3. Rins
6、e thoroughly in running tap water and then with distilled water. 4. D ip for 15 minutes in the freshly prepared dye test solution at 50 +/ - 2 C. 5. Wash with tap water, rub surface with a soft brush and allow to dry at 23 +/ - 2 C. Evaluation Examine anodic coating for evidence of poor sealing which is indicated by the intensity of green colour on the surface. 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.
