GB/T 5237.2-2017Wrought aluminium alloy extruded profiles for architecture - Part 2: Anodized profiles (English PDF)

4.1 Product Classification

4.1.1 Grade, Status and Size Specifications The grade, condition and size specifications shall comply with the provisions of GB/T 5237.1.

4.1.2 Surface texture types and characteristics The surface texture types and characteristics are shown in Table 1. Table

1 Types and characteristics of profile surface texture Texture type texture features The glossy surface maintains the same surface texture appearance as the substrate Surface texture appearance obtained by sandblasting, shot blasting or alkali etching on the surface of the substrate Smooth, shiny surface texture appearance obtained by grinding the surface of the substrate with a cloth wheel, wool wheel and sandpaper Surface texture appearance of straight lines, chaotic lines, threads, corrugations, and swirls obtained by mechanically rubbing the surface of the substrate

4.1.3 Film thickness level, film color and surface treatment The film thickness level, film color and surface treatment of the film layer are shown in Table 2. Table

2 Film thickness level, film color and surface treatment Film thickness level a, b film color surface treatment method a AA10, AA15, AA20, AA

25 Silver white Bronze, black, gold, etc. Anodized sealing Anodized electrolytic coloring c sealing Anodizing dyeing d sealing a Film thickness level, coloring and sealing process have a great influence on the performance of the film. b Generally, the thicker the film thickness, the better the salt spray corrosion resistance. c Electrolytic coloring can only meet the customer's demand for a certain range of colors. d The ultraviolet light resistance of the dyed film layer is generally worse than that of electrolytic coloring.

4.1.4 Marking and examples Profile marking by product name, this part number, grade, status, section code and length, color (or color number), surface texture type, film A thick level of sequential representation. Examples of tags are as follows: Bronze, sand surface, film thickness grade AA15, 6063 grade, T5 state, profile section code 421001, length of 3000mm profile, standard Recorded as. Anodized profile GB/T 5237.2-6063T5-421001×3000 bronze sand surface AA15

4.2 Quality Assurance

4.2.1 Process Process assurance see A.1.

4.2.2 Raw materials Refer to A.2 for the quality of the substrate, the quality of the anodizing surface treatment chemicals and additives.

4.3 Chemical composition The chemical composition should meet the requirements of GB/T 5237.1.

4.4 Mechanical properties Mechanical properties should meet the requirements of GB/T 5237.1.

4.5 Dimensional deviation Dimensional deviation (including the film layer) shall comply with the provisions of GB/T 5237.1.

4.6 Film properties

4.6.1 Film thickness The average film thickness and local film thickness of the film layer are to comply with the requirements of Table 3. The film thickness level should be indicated in the order form (or contract), if not specified, Available as AA10. Table 3 film thickness requirements Film thickness level Average film thickness Mm Partial film thickness Mm AA10 >=10 >=8 AA15 >=15 >=12 AA20 >=20 >=16 AA25 >=25 >=20

4.6.2 Color difference The color should be basically the same as the swatch agreed by the supplier and the buyer, or in the range of colors defined by the upper and lower color scales agreed by the supplier and the buyer. Inside. When using the instrument method, the allowable color difference value shall be agreed between the supplier and the buyer and specified in the order form (or contract).

4.6.3 Sealing quality After the sealing quality test, the mass loss value should be no more than 30mg/dm2.

4.6.4 Abrasion resistance The abrasion resistance can be measured by a falling sand test or a spray grinding test. When using the falling sand test, the average sand consumption per micron film thickness is not less than 330g; when using the spray test, the average wear time per micron film thickness is not less than 3.5s. The test method used for wear resistance shall be on both the supply and demand sides. Agreed, and stated in the order form (or contract), if not specified, according to the falling sand test.

4.6.5 Salt spray corrosion resistance The salt spray resistance of the film shall comply with the requirements of Table 4. Table

4 Salt spray corrosion resistance Film thickness level Test time Protection level AA10 16 AA15 24 AA20 48 AA25 48 >=9

4.6.6 Weather resistance

4.6.6.1 UV resistance After the UV resistance test, the surface color change of the visual sample shall not be greater than the degree of discoloration agreed between the supplier and the buyer.

4.6.6.2 Natural weather resistance When the demander has requirements for natural weatherability, the test conditions and acceptance criteria shall be agreed between the supplier and the buyer and specified in the order form (or contract).

4.6.7 Other When the demand side has requirements for other performances, the supplier and the buyer shall refer to GB/T 8013.1 for specific agreement and indicate in the order form (or contract).

4.7 Appearance quality The surface of the profile is not allowed to have defects such as electric burns and film peeling, but it is allowed to be partially film-free within 80 mm from the end of the profile.

5.2 Dimensional deviation check by root 4.5

5.3 The sample thickness of the film thickness is as specified in Table 8.4.6.1

5.4 Film properties

5.4.1 Film thickness According to the measurement principle specified in GB/T 8014.1, the eddy current method in GB/T 4957 or the microscope method in GB/T 6462 is used. Line measurement. The arbitration test was carried out according to the microscope method specified in GB/T 6462.

5.4.2 Color difference According to the provisions of GB/T 12967.6.

5.4.3 Sealing quality According to the provisions of GB/T 8753.1.

5.4.4 Wear resistance According to the provisions of GB/T 8013.1.

5.4.5 Salt spray corrosion resistance Carry out the CASS test according to the provisions of GB/T 12967.3, and after the test time specified in Table 4, evaluate the test according to the provisions of GB/T 6461. As a result of the test, the protection levels corresponding to different defect area ratios are shown in Table 5. Table

5 Protection levels corresponding to different defect area ratios Defect area ratio after test Protection level Defect area ratio after test Protection level No level 10 >0.05~0.07 9.3 <=0.02

9.8 level >0.07~

0.10 level 9 >0.02~0.05

9.5 level >0.10~

0.25 level 8

5.4.1 Color difference check by root 4.6.2

5.4.2 Sealing quality Wear resistance Salt spray corrosion resistance Weather resistance UV resistance Natural weather resistance After the sealing of the profile is completed for 120h, 2 profiles/test items are extracted from each batch. Cut one sample from each of the extracted profiles Take 3 profiles from the batch and cut them on each of the selected profiles. 1 sample. If the buyer agrees, the supplier can make the film thickness level and film layer

3 pieces of the same color and surface treatment method and process as the batch

The test plate replaces the profile sample. Sample (or test plate) film effective surface size (length × width) should be 250mm × 150mm 4.6.3 5.4.3 4.6.4 5.4.4 4.6.5 5.4.5 4.6.6.1 5.4.6.1 4.6.6.2

5.4.6.2 Other film properties shall be sampled according to GB/T 8013.1 or agreed by the supplier and the buyer. 4.6.7

5.4.6 Weather resistance

5.4.6.1 UV resistance According to the provisions of GB/T 12967.4, the test time is 300h.

5.4.6.2 Natural weather resistance According to the provisions of GB/T 9276.

Note. Many countries use the Florida Atmospheric Corrosion Test Station for natural weathering tests. Atmospheric conditions in the China Atmospheric Corrosion Test Station Closer is the Qionghai atmospheric corrosion test station in Hainan Province, but the test results of the Qionghai atmospheric corrosion test station in Hainan Province and the test results in Florida will has a difference.

5.4.7 Other Other performance tests shall be carried out in accordance with GB/T 8013.1 or agreed upon by the supplier and the buyer.

5.5 Appearance quality The appearance quality is carried out in accordance with the provisions of GB/T 12967.6.

5.5 Table

8 The number of film thickness samples and the number of unqualified products The maximum number of unqualified items in the batch range 1~10 all 0 11~200 10 1 201~300 15 1 301~500 20 2 501~800 30 3 800 or more 40 4

6.1 Inspection and acceptance

6.1.1 The profile shall be inspected by the supplier to ensure that the quality of the profile complies with the provisions of this part or the order form (or contract) and fill in the quality certificate. Book.

6.1.2 The purchaser may inspect the received profile in accordance with the provisions of this section. Inspection results and provisions of this part or order form (or contract) In case of discrepancy, it shall be submitted to the supplier in writing and resolved by negotiation between the supplier and the buyer. Objections that are subject to appearance quality and dimensional deviation should be received The objection of the profile shall be filed within one month from the date of the profile and shall be filed within six months from the date of receipt of the profile. If arbitration is required, The unit shall be inspected by the unit recognized by both parties, and the sampling of the arbitration shall be on the demand side and shall be jointly carried out by both the supplier and the buyer.

6.2 Batch Profiles shall be submitted for acceptance in batches, each batch shall be of the same grade, condition, size specification (or section code), surface texture type, film thickness level, The color of the film layer and the same surface treatment method and the profile of the process are not limited.

6.3 Inspection classification Product inspection is divided into factory inspection and periodic inspection.

6.4 Inspection items and process assurance projects

6.4.1 Factory inspection items, periodic inspection items and process assurance items shall comply with the requirements of Table 6. Table

6 Inspection items and process assurance projects Inspection project factory inspection project periodic inspection project process assurance project Chemical composition sqrt - - Mechanical properties sqrt - - Size deviation sqrt - - Film thickness sqrt - - Color difference sqrt - - Sealing quality sqrt - - Abrasion resistance a sqrt sqrt Salt spray corrosion resistance a sqrt sqrt Weather resistance UV resistance a sqrt sqrt Natural weather resistance a - sqrt Other a - - Appearance quality sqrt - -

Note. "sqrt" means the item or process assurance item that must be inspected, "-" means no inspection item or non-process guarantee item. a When the order form (or contract) indicates the inspection, the item is listed as a mandatory inspection item. Not checked when not specified.

6.4.2 The supplier shall conduct at least one periodic inspection every three years.

6.5 Sampling Sampling of profiles shall be in accordance with Table 7. Table 7 sampling Section number of the test method for the test article required by the sampling requirements of the inspection project The chemical composition is in accordance with the provisions of GB/T 5237.1 4.3

6.6 Determination of test results

6.6.1 When the chemical composition of any sample is unqualified, when the profile can distinguish the melting time, the melting point represented by the sample is judged to be unqualified, and the other melting times are determined. Sub-test, qualified delivery. If the melting time cannot be distinguished, the batch is judged to be unqualified.

6.6.2 If the mechanical properties of any of the specimens are unqualified, double the number of specimens from the batch of specimens shall be taken for repeated tests and repeated tests. If all the results are satisfactory, the batch is judged to be qualified. If the test results are still unsatisfactory, the batch is judged to be unqualified. Supply and demand double The parties agree to allow the supplier to check the roots one by one, and the qualified ones deliver.

6.6.3 If the dimensional deviation of any sample is unqualified, the batch is judged to be unqualified. However, the supplier is allowed to check the roots one by one, and the qualified ones deliver.

6.6.4 If the number of non-conforming products with a film thickness exceeds the upper limit of the number of non-conforming products specified in Table 8, another double number of profiles shall be taken for repeated test. Test. If the number of non-conforming products in the repeated test does not exceed double the upper limit of the number of non-conforming products specified in Table 8, the batch is judged to be qualified, otherwise the judgment is The batch failed. The supplier and the buyer agree to allow the supplier to check the roots one by one, and the qualified ones deliver the goods.

6.6.5 If the color difference of any sample is unqualified, the root is judged to be unqualified.

6.6.6 If the sealing quality of any sample is unqualified, the batch is judged to be unqualified.

6.6.7 If the wear resistance of any sample is unqualified, the batch is judged to be unqualified.

6.6.8 If the salt spray corrosion resistance of any of the samples is unqualified, the batch is judged to be unqualified.

6.6.9 If the weather resistance of any of the samples is unqualified, the batch is judged to be unqualified.

6.6.10 If the performance of other layers of any of the samples is unqualified, the batch is judged to be unqualified.

6.6.11 If the appearance quality of any of the samples is unqualified, the root is judged to be unqualified.

6.6.12 When the results of the periodic inspection are unqualified, the supplier shall deal with the quality of the substrate, the quality of the chemical agents and additives used in the anodizing surface treatment, and the workmanship. Art, etc. will be re-evaluated and re-inspected until qualified.

7.1 Mark

7.1.1 Product logo On the inspection of qualified profiles, there should be the following content (or label with the following content).

a) the name and address of the supplier;

b) the name of the product;

c) the inspection of the quality inspection department of the supplier (or the signature or seal of the q...