GB/T 8013.1-2018 PDF English (GB/T 8013.1-2007: Older version)

GB/T8013.1-2018 (GBT8013.1-2018): PDF in English

GB/T 8013.1-2018 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.220.01 H 60 Replacing GB/T 8013.1-2007 Anodic oxide coatings and organic polymer coatings on aluminum and its alloys - Part 1.Anodic oxide coatings ISSUED ON. MAY 14, 2018 IMPLEMENTED ON. FEBRUARY 01, 2019 Issued by. Status Administration for Market Regulation; National Standardization Administration. Table of Contents Foreword... 3 1 Scope... 7 2 Normative references... 7 3 Terms and definitions... 9 4 Classification... 9 5 Performance requirements... 11 6 Test method... 17 7 Inspection rules... 22 Appendix A (Normative) Instructions for measuring average film thickness and local film thickness... 27 Appendix B (Normative) Determination of the sealing quality of anodic oxide film by sodium molybdate phosphate method without nitric acid pre-immersion... 29 Appendix C (Informative) Determination of alkali resistance - Potentiometer method ... 32 Anodic oxide coatings and organic polymer coatings on aluminum and its alloys - Part 1.Anodic oxide coatings 1 Scope This Part of GB/T 8013 specifies the terms and definitions, classification, performance requirements, test methods, inspection rules, etc. of aluminum and aluminum alloy anodic oxide films. This Part is applicable to aluminum anodic oxide films used in the fields of machinery, municipal administration, transportation, electrical, packaging, construction, decoration. This Part does not apply to barrier-type non-porous anodic oxide films, films generated by anodization in chromic acid solution, anodic oxide films used as organic coatings or metal plating bases. 2 Normative references The following documents are essential for the application of this document. For all references with dates, only the versions with dates apply to this document. For all references without dates, the latest versions (including all amendments) apply to this document. GB/T 250 Textiles -- Tests for color fastness - Grey scale for assessing change in color GB/T 1865-2009 Paints and varnishes - Artificial weathering and exposure to artificial radiation - Exposure to filtered xenon-arc radiation GB/T 2423.51 Environmental testing - Part 2.Test methods - Test Ke. Flowing mixed gas corrosion test GB/T 6461 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates - Rating of test specimens and manufactured articles subjected to corrosion tests GB/T 6682 Water for analytical laboratory use - Specification and test methods GB/T 8005.3 Aluminium of aluminium alloys - Terms and definitions - Part 3. Surface treatment GB/T 12967.6 Test methods for anodic oxidation coatings and organic polymer coatings on aluminium and aluminium alloys - Part 6.Determination of color and appearance GB/T 12967.7 Test methods for anodic oxidation coatings and organic polymer coatings on aluminium and aluminium alloys - Part 7.Determination of wear resistance of anodic oxide film by falling sand tester GB/T 18911-2002 Thin-film terrestrial photovoltaic (PV) modules - Design qualification and type approval GB/T 20854 Corrosion of metals and alloys - Accelerated testing involving cyclic exposure to salt mist, dry and wet condition 3 Terms and definitions The terms and definitions defined in GB/T 8005.3, as well as the following terms and definitions, apply to this document. 3.1 Dyed anodic coating Anodic coating colored by adsorption of dyes or pigments in the pore structure. 3.2 Bright anodizing Anodic oxidation characterized by high specular reflectivity. 3.3 Protective anodizing Anodic oxidation characterized by corrosion resistance and wear resistance, while appearance is a secondary or unimportant feature. 3.4 Decorative anodic coating Anodic oxidation characterized by uniform and beautiful appearance. 4 Classification 4.1 The film code, surface treatment method and typical application of anodic oxide 5.12.2 Accelerated weather resistance When the purchaser has requirements for xenon lamp accelerated weather resistance and ultraviolet light resistance, the performance requirements shall be indicated in the order form (or contract). 6 Test method 6.1 Appearance It is performed in accordance with the provisions of GB/T 12967.6. 6.2 Color difference It is performed in accordance with the provisions of GB/T 12967.6. 6.3 Film thickness It is performed according to the provisions of GB/T 8014.1.The measurement instructions of average film thickness and local film thickness are shown in Appendix A. 6.4 Surface density It is performed according to the provisions of the mass loss method in GB/T 8014.2. 6.5 Sealing quality 6.5.1 The test method of sodium molybdate phosphate without nitric acid pre- immersion shall be carried out in accordance with the provisions of Appendix B; the others shall be carried out in accordance with the provisions of the acid etching weight loss method in GB/T 8753.1.GB/T 8753.1 shall be used for arbitration. 6.5.2 The admittance test shall be carried out in accordance with the provisions of GB/T 8753.3. 6.5.3 The dye spot test shall be carried out in accordance with the provisions of GB/T 8753.4. 6.5.4 For the sealing pen test, use a black pen to draw a circle on the specimen; wipe the specimen with a soft cloth dipped in water within 5 s ~ 10 s; visually inspect it. 6.6 Hardness It is performed according to the provisions of GB/T 9790. 6.7 Wear resistance 6.7.1 Abrasive blasting method It is performed according to the provisions of GB/T 12967.1. 6.7.2 Sand falling method It is performed according to the provisions of GB/T 12967.7. 6.7.3 Wheel grinding method It is performed according to the provisions of GB/T 12967.2. 6.7.4 TABER's wear resistance method It is performed according to GB/T 12967.1 or the method agreed upon by the supplier and the buyer. 6.7.5 Vibration grinding method It is performed according to GB/T 12967.1 or the method agreed upon by the supplier and the buyer. 6.7.6 Sandpaper grinding method It is performed according to GB/T 12967.1 or the method agreed upon by the supplier and the buyer. 6.8 Deformation and crack resistance It is performed according to the provisions of GB/T 12967.5. 6.9 Environmental corrosion resistance 6.9.1 Salt spray corrosion resistance NSS test and AASS test shall be carried out in accordance with GB/T 10125; CASS test shall be carried out in accordance with GB/T 12967.3.The rating of corrosion results shall be carried out in accordance with GB/T 6461. 6.9.2 Resistance to sulfur dioxide humid atmosphere corrosion It is performed in accordance with GB/T 9789.The rating of corrosion results shall be carried out in accordance with GB/T 6461. 6.9.3 Salt solution corrosion resistance At 23 °C ± 3 °C, immerse the specimen in a salt solution. The composition of the salt solution is shown in Table 9.The test time is 500 h. The rating of corrosion results shall be carried out in accordance with GB/T 6461.The chemical reagents used shall be Cover the specimen with a non-woven fabric saturated with artificial sweat test solution (6.10.2.1); place it in a constant temperature and humidity chamber at a temperature of 55 °C ± 1 °C and a relative humidity of 93% ± 2% for 48 hours; take out the specimen from the constant temperature and humidity chamber; place it at room temperature for 2 hours; then rinse and blow dry the specimen with tap water; observe the surface of the film layer. 6.10.3 Alcohol resistance At room temperature, wrap a 500 g wipe head with at least six layers of medical gauze; absorb ethanol (mass fraction 95%); wipe back and forth 100 times on the surface of the specimen, along the same straight line path at a rate of 1 round trip per second (one round trip is counted as 1 time); the wiping stroke is about 100 mm. The gauze shall be kept moist during the test. After the test, visually inspect the surface of the film layer after the test. 6.10.4 Cleaner resistance At room temperature, immerse the specimen in a 5% neutral detergent solution for 24 hours; take it out and rinse it with tap water; blow dry the specimen; observe the surface of the film. 6.11 Temperature and humidity resistance 6.11.1 Thermal cracking test Place the specimen in a constant temperature box at 46 °C ± 2 °C; keep it warm for 30 minutes; take out the specimen; visually check whether there are cracks on the surface. If there are no cracks, increase the temperature by 6 °C and repeat the test until it reaches 82 °C, or a higher temperature agreed upon by the supplier and the buyer. 6.11.2 Thermal aging test Place the specimen in a constant temperature box at 120 °C ± 3 °C; keep it warm for 30 minutes; take out the specimen; compare the specimen with the original specimen; compare the color change of the specimen with the gray scale card for color change assessment in accordance with GB/T 250.If the color change does not reach level 4, increase the temperature by 20 °C until 200 °C. The heat resistance of the specimen is expressed by the temperature, at which the color change reaches level 4 or exceeds the previous level of level 4. 6.11.3 Low temperature test Place the specimen in a constant temperature box at -40 °C ± 3 °C; keep warm for 240 h; take out the specimen and let it stand at room temperature for 2 h; observe the surface of the film layer. 6.11.4 High and low temperature cycle test Perform in accordance with the provisions of 10.11 of GB/T 18911-2002. 6.11.5 Constant temperature and humidity test 6.11.5.1 High humidity method Place the specimen in a constant temperature and humidity box at 50 °C ± 3 °C and relative humidity of 95% ± 5%; keep warm for 72 h; take out the specimen and let it stand at room temperature for 2 h; observe the surface of the film layer. 6.11.5.2 Medium humidity method Place the specimen in a constant temperature and humidity chamber at 85 .......
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