Detail of SJ 20892-2003

Introduction of SJ 20892-2003

1 Scope This standard specifies the requirements of anodic coatings for aluminum and aluminum alloys of 6 types and 2 categories. This standard is applicable to anodic coatings for aluminum and aluminum alloys for protection and decoration in electronic industry. This standard is not applicable to anodic coatings for bonding. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references or references with version not indicated, the latest edition of the normative document referred to applies. GB/T 3181 Colour standard for paint film GB/T 4957 Non-conductive coatings on non-magnetic basis metals—Measurement of coating thickness—Eddy current GB/T 6462 Metallic and oxide coatings—Measurement of coating thickness—Microscopical method GB/T 8015.1 Test methods for thickness of anodic oxidation coatings on aluminium and aluminium alloys—Gravimetric method GB/T 11186.3 Methods for measuring the colour of paint films—Part 3: Calculation of colour differences GB/T 11189.1 Operating light-exposure apparatus (xenon-arc type) with and without water and testing method for exposure of nonmetallic materials GB/T 11189.2 Operating light-exposure apparatus (carbon-arc type) with and without water and testing method for exposure of nonmetallic materials GB/T 11190 Operating light-and water-exposure apparatus (carbon-arc type) and testing method for testing paint, varnish, lacquer, and related products GJB 150.11 Environmental test methods for military equipment—Salt fog test GJB 179A-1996 Sampling procedures and tables for inspection by attributes GJB 385A-1996 Specification for alphatic polyurethane enamels and compatible for aircraft skin application 3 Terms and definitions For the purpose of this standard, the following terms and definitions apply. 3.1 pit local corrosion with greater depth than width. Under normal circumstances, it shows line and tail shape 3.2 delamination separation of two adjacent layers due to lack of viscosity

Contents of SJ 20892-2003

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 Requirements 6 Inspection methods Annex A (Normative) Test methods for abrasion index