GB/T 12967.1-2020 Test methods for anodic oxidation coatings and organic polymer coatings of aluminium and aluminium alloys - Part 1: Measurement of abrasion resistance
1 Scope
This part of GB/T 12967 specifies the abrasive blasting method, sand falling method, paper tape wheel abrasion method, rubber wheel abrasion method, rubber abrasion method and friction coefficient measurement method.
The abrasive blasting method is applicable to the measurement of abrasion resistance of anodic oxidation coatings and organic polymer coatings with thickness of coating not less than 5 μm, and is applicable to smaller specimens and those with uneven surface.
The sand falling method is applicable to the measurement of abrasion resistance of anodic oxidation coatings and organic polymer coatings, and is applicable to smaller specimens and those with uneven surface.
The paper tape wheel abrasion method is applicable to the measurement of abrasion resistance of anodic oxidation coatings and organic polymer coatings with thickness not less than 5 μm, and may be used for measuring the overall abrasion resistance of the coatings and the change of abrasion resistance along thickness of coatings, but is not applicable to specimens with uneven surface.
The rubber wheel abrasion method is applicable to the measurement of abrasion resistance of anodic oxidation coatings and organic polymer coatings, and may be used for measuring the overall abrasion resistance of coatings, but is not applicable to specimens with uneven surface.
The rubber abrasion method is applicable to the measurement of abrasion resistance of anodic oxidation coatings and anodic oxidation composite coatings with thickness less than 5 μm, and may be used as reference to functional coatings and texture coatings.
The friction coefficient measurement method is applicable to products such as aluminium floor and aluminium foil which require slip resistance.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2481.1-1998 Bonded abrasives - Determination and designation of grain size distribution - Part 1: Macrogrits F4 to F220
GB/T 4100-2015 Ceramic tiles
GB/T 4957 Non-conductive coatings on non-magnetic basis metals - Measurement of coating thickness - Eddy current
GB/T 8005.3 Aluminium of aluminium alloys - Terms and definitions - Part 3: Surface treatment terms
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 9258.1-2000 Coated abrasives - Grain size analysis - Part 1: Grain size distribution test
GB/T 17671 Test method of cement mortar strength (ISO method)
YS/T 1186 Sand falling test apparatus for abrasion resistance of anodizing and organic coatings on aluminium and aluminium alloy
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 8005.3 and the following apply.
3.1
reference specimen
specimen prepared according to the conditions approved by both the supplier and the purchaser
4 Abrasive blasting method
4.1 Method overview
Under specified conditions, blast the dry silicon carbide particles on the inspection area of the specimen until its metal matrix is exposed. The abrasion resistance of the coatings is evaluated by abrasion time and sand wear mass.
4.2 Apparatuses
4.2.1 Abrasive blasting tester
See Annex A for the requirements for abrasive blasting tester.
?
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Abrasive blasting method
5 Sand falling method
6 Paper tape wheel abrasion method
7 Rubber wheel abrasion method
8 Rubber abrasion method
9 Friction coefficient measurement method
10 Test report
Annex A (Informative) Requirements for abrasive blasting tester
Annex B (Normative) Preparation of standard specimen of common anodic oxidation coatings
Annex C (Normative) Preparation of standard specimen of anodic oxidation coatings
Annex D (Information Annex) Requirements for paper tape wheel abrasion tester
Annex E (Informative) Requirements for rubber wheel abrasion tester
