GB/T 5237.3: Evolution and historical versions
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Wrought aluminium alloy extruded profiles for architecture -- Part 3: Electrodeposition coating profiles
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[GB/T 5237.3-2008] Wrought aluminium alloy extruded profiles for architecture -- Part 3: Electrophoretic coating profiles
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Wrought aluminium alloy extruded profiles for architecture -- Part 3: Electrophoretic coating profiles
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Wrought aluminium alloy extruded profiles for architecture Part 4: Powder coating profiles
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PDF similar to GB/T 5237.3-2017
Basic data | Standard ID | GB/T 5237.3-2017 (GB/T5237.3-2017) | | Description (Translated English) | Wrought aluminium alloy extruded profiles for architecture -- Part 3: Electrodeposition coating profiles | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H61 | | Classification of International Standard | 77.150.10 | | Word Count Estimation | 22,299 | | Date of Issue | 2017-10-14 | | Date of Implementation | 2018-07-01 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 5237.3-2017: Wrought aluminium alloy extruded profiles for architecture -- Part 3: Electrodeposition coating profiles
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Wrought aluminium alloy extruded profiles for architecture-Part 3. Electrodeposition coating profiles
ICS 77.150.10
H61
National Standards of People's Republic of China
Replace GB/T 5237.3-2008
Aluminum alloy building profiles
Part 3. Electrophoretic paint profiles
Part 3. Electrodepositioncoatingprofiles
Released on.2017-10-14
2018-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Foreword
GB/T 5237 "Aluminum Alloy Building Profile" is divided into 6 parts.
--- Part 1. Substrate;
---Part 2. Anodized profiles;
---Part 3. Electrophoretic paint profiles;
---Part 4. Spray profiles;
---Part 5. Painting profiles;
--- Part 6. Thermal insulation profiles.
This part is the third part of GB/T 5237.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB 5237.3-2008 "Aluminum alloy building profiles Part 3. Electrophoretic painting profiles". This part and
Compared with GB 5237.3-2008, the main technical changes except editorial changes are as follows.
--- Removed the preface "The partial film thickness requirements of the composite film in this part of 4.4.4 and Table 2 are mandatory, and the rest is recommended.
Statement of "see the preface of the.2008 edition";
--- Revised the applicable "scope" of this section (see Chapter 1, Chapter 1 of the.2008 edition);
--- Removed the normative reference document GB/T 228-2002 (see Chapters 2 and 5.2 of the.2008 edition);
--- Removed the normative reference document GB/T 8013.1 (see Chapters 2 and 5.4.6 of the.2008 edition);
--- Removed the normative reference document GB/T 9761 (see Chapters 2 and 5.5 of the.2008 edition);
--- Removed the normative reference file GB/T 9789 (see Chapter 2 of the.2008 edition);
--- Removed the normative reference document GB/T 14952.3 (see Chapters 2 and 5.4.1 of the.2008 edition);
--- Removed the normative reference document GB/T 20975 (see Chapters 2 and 5.1 of the.2008 edition);
--- Removed the normative reference document JC/T 480 (see Chapters 2 and 5.4.9 of the.2008 edition);
--- Added normative reference document GB/T 8005.3 (see Chapters 2 and 3);
--- Added normative reference document GB/T 12967.6 (see Chapter 2, 5.4.2 and 5.5);
--- Added normative reference document GB/T 14684 (see Chapters 2 and 5.4.9);
--- Added normative reference document JC/T 479 (see Chapters 2 and 5.4.9);
--- Revised guidelines for terms and definitions (see Chapter 3, Chapter 3 of the.2008 edition);
--- Revised the definition of "decorative surface" (see 3.1, 3.1 of the.2008 edition);
--- Removed the definition of "local film thickness" (see 3.2 of the.2008 edition);
--- Added the "paint film type and film characteristics" provisions (see 4.1.2);
--- In the product classification, the content of the typical use of each film thickness level is modified to the note description of the film thickness level, and the film code is carried out.
Provisions (see 4.1.3, see 4.1.2 of the.2008 edition);
---In the product classification, the content of "composite film performance level and applicable environment of corresponding profiles" has been added (see 4.1.4);
--- Added "quality assurance" content (see 4.2);
---In the film thickness requirements, the surface film thickness of the profile such as the inner corner and the groove is increased (see 4.6.1, see 4.4.2 of the.2008 edition);
--- Revised the requirements for the hardness of S-grade paint film (see 4.6.3, 4.4.3 of the.2008 edition);
--- Modified the boiling water resistance requirements (see 4.6.5,.2008 version 4.4.5);
--- Revised the wear resistance requirements (see 4.6.6,.2008 version 4.4.6);
--- Revised solvent resistance requirements (see 4.6.10,.2008 edition of 4.4.10);
--- Revised salt spray corrosion resistance requirements (see 4.6.13,.2008 edition of 4.4.12);
--- Increased the performance requirements of the combined results of UV salt spray (see 4.6.14);
--- In the provisions of the accelerated weathering test results, the gloss retention requirement was modified (see 4.6.15.1, 4.4.14.1 of the.2008 edition);
--- In the provisions for accelerating the weathering test results, the "degree of discoloration ≤ 1 level" is modified to "color difference ΔE*ab ≤ 3.0" (see 4.6.15.1,
4.4.14.1 of the.2008 edition);
--- Modified the "other" film performance requirements (see 4.6.16,.2008 version of 4.4.15);
--- Revised the requirements for chemical composition test methods (see 5.1, 5.1 of the.2008 edition);
--- Revised the requirements of the mechanical properties test method (see 5.2, 5.2 of the.2008 edition);
--- Revised the requirements for boiling water resistance test methods (see 5.4.5, 5.4.5 of the.2008 edition);
--- Revised the requirements of the test method for wear resistance (see 5.4.6, 5.4.6 of the.2008 edition);
--- In the test method for hydrochloric acid resistance, the "chemically pure hydrochloric acid" was changed to "analytically pure hydrochloric acid" (see 5.4.7, 5.4.7 of the.2008 edition);
---In the mortar resistance test method, the lime powder was modified to the building quicklime specified in JC/T 479, and the standard sand was modified to
Construction sand specified in GB/T 14684 (see 5.4.9,.2008 edition 5.4.9);
--- Revised the solvent resistance test method requirements (see 5.4.10,.2008 edition 5.4.10);
--- Increased the requirements of the combined test method for UV salt spray (see 5.4.14);
--- Revised the requirements for accelerated weathering test methods (see 5.4.15.1, 5.4.14.1 of the.2008 edition);
--- The note in the natural weathering test method was revised to "Many countries use the Florida atmospheric corrosion test station for natural weathering test
Test. In the China Atmospheric Corrosion Test Station, the atmospheric conditions in close proximity to Florida are the Qionghai atmospheric corrosion test station in Hainan Province.
However, the test results of the Qionghai atmospheric corrosion test station in Hainan Province are different from those in Florida. " (see 5.4.15.2,
2008 edition 5.4.14.2);
--- Revised the requirements for the appearance quality inspection method (see 5.5, 5.5 of the.2008 edition);
--- Revised the requirements for inspection and acceptance (see 6.1, 6.1 of the.2008 edition);
--- Revised the method requirements for group approval (see 6.2, 6.2 of.2008 edition);
--- Revised the provisions of the inspection project (see 6.4, 6.3 of the.2008 edition);
--- Revised the sampling regulations (see 6.5, 6.4 of the.2008 edition);
--- Revised the judgment requirements of the test results (see 6.6, 6.5 of the.2008 edition);
--- Revised the provisions of the logo (see 7.1.1, 7.1 of the.2008 edition);
---Modified the packaging requirements (see 7.2, 7.3 of the.2008 edition);
---Modified transportation and storage regulations (see 7.3, 7.4 of the.2008 edition);
--- Revised the content requirements of the quality certificate (see 7.4, 7.5 of the.2008 edition);
---Modified the content requirements of the order form (or contract) (see Chapter 8, Chapter 8 of the.2008 edition);
--- Increased the content of raw material quality assurance (see Appendix A);
--- Added the content of the reference (see references).
This part was proposed by the China Nonferrous Metals Industry Association.
This part is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).
This section drafted by. Guangdong Jianmei Aluminum Profile Factory (Group) Co., Ltd., Guangya Aluminum Industry Co., Ltd., Guangdong Feng Aluminum Co., Ltd.,
Nonferrous Metals Technology and Economic Research Institute, Guangdong Huachang Aluminum Factory Co., Ltd., National Nonferrous Metals Quality Supervision and Inspection Center, Guangdong Industrial Analysis
Testing Center, Sichuan Samsung New Material Technology Co., Ltd., Jiangyin Hengxing Coating Co., Ltd., Tianjin Development Zone Ailong Chemical Technology Co., Ltd.
Company, Fujian Nanping Aluminum Co., Ltd., Guangdong Xingfa Aluminum Co., Ltd., Fujian Minfa Aluminum Co., Ltd., Shannanshan
Aluminum Industry Co., Ltd.
The main drafters of this section. Dai Yuexing, Pan Xuezhe, Chen Hui, Ge Lixin, Tang Xingyu, Fan Zhiyu, Liu Yingkun, Wang Zheng, Lin Yilong, Shi Hongwei,
Xie Zhijun, Liang Jinpeng, Huang Ciwei, Li Wei.
The previous versions of the standards replaced by this section are.
---GB/T 5237.3-2000, GB 5237.3-2004, GB 5237.3-2008.
Aluminum alloy building profiles
Part 3. Electrophoretic paint profiles
1 Scope
This part of GB/T 5237 specifies the terms and definitions, requirements, test methods, inspection rules, packaging, marking, and
Transportation, storage, quality certificate and order form (or contract).
This section applies to the heat of aluminum alloy for construction treated by anodizing, coloring and electrophoretic painting (water-soluble varnish or paint)
Extruded profiles (hereinafter referred to as profiles).
Other aluminum alloy processed materials with the same application and surface treatment methods can also be referred to in this section.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 629 chemical reagent sodium hydroxide
GB/T 1740 paint film moisture resistance test
GB/T 1766 Paint and varnish coating aging rating method
GB/T 1865-2009 Painted and varnish artificial weathering and artificial radiation exposure filtered xenon arc radiation
GB/T 3199 Aluminum and aluminum alloy processing products packaging, marking, transportation, storage
GB/T 4957 Non-conductive coating on non-magnetic base metal, thickness measurement of eddy current method
GB/T 5237.1 aluminium alloy building profiles - Part 1.
GB/T 5237.2 aluminium alloy building profiles - part 2. anodized profiles
GB/T 6461 Metal and other inorganic coatings on metal substrates after corrosion test samples and test pieces
GB/T 6462 metal and oxide coating thickness measurement microscopy
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 6739 Paint and varnish pencil method for determination of film hardness
GB/T 8005.3 Aluminium and aluminium alloys - Part 3. Surface treatment
Aluminium and aluminium alloy anodized films and organic polymeric films - Part 2
Aluminium and aluminium alloys - Determination of thickness of anodized oxide film - Part 1
GB/T 9276 coating natural weather exposure test method
GB/T 9286 color and varnish paint film cross-cut test
GB/T 9754 Determination of 20°, 60° and 85° specular gloss of paints and varnishes without metallic pigments
GB/T 10125 artificial atmosphere corrosion test salt spray test
GB/T 11186.2 Measurement methods for colour of coatings - Part 2. colour measurement
GB/T 11186.3 Method of measurement of coating colours Part 3. Calculation of colour difference
Aluminium and aluminium alloys - Determination of anodic oxide film - Part 6
Poor and appearance quality
GB/T 14684 construction sand
GB/T 16585 vulcanized rubber artificial weathering (fluorescent ultraviolet lamp) test method
JC/T 479 Building Lime
3 Terms and definitions
The following terms and definitions as defined in GB/T 8005.3 apply to this document.
3.1
Decorative surface exposedsurfaces
Profiles that are processed, assembled into articles and mounted on buildings, visually visible surfaces (including in an open or closed state).
4 requirements
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 Paint film type and paint film characteristics
The type of paint film and the characteristics of the paint film are shown in Table 1.
Table 1 Paint film type and paint film characteristics
Paint film type film characteristics
Classified by paint film gloss
The surface of the varnish film is bright and the specular reflectance is high.
Matte paint film surface gloss is soft, specular reflectance is low
Classified by paint film color
The transparent paint film is colorless and transparent, and the electrophoretic coating used does not contain pigment.
Colored film
The paint film is various in color, but it is affected by the properties of the pigment used, weather resistance, corrosion resistance and transparency.
Paint film has a certain difference
4.1.3 Film thickness level
The film thickness level is shown in Table 2.
Table 2 Composite film thickness level
Film thickness level film code film type note
EA21
EB16
ES21
Light or matte clear film
Light or matt colored film
The composite film thickness grade is divided into three categories. A, B and S. The classification is based on film thickness and electrophoretic coating.
The type of material is divided, not by performance. For the same manufacturer
The same type of electrophoretic coating uses the same production process to form a composite film, the film thickness
High weather resistance and corrosion resistance lower than the film thickness of the paint film is usually better
4.1.4 Composite film performance level and applicable environment of corresponding profiles
The performance level of the composite membrane is classified into Grade II, Grade III and Grade IV according to the salt spray corrosion resistance, accelerated weather resistance and UV salt spray combined test results. performance
The level shall be agreed between the supplier and the buyer, and shall be indicated in the order form (or contract). If not specified, the grade shall be supplied. Composite film performance level corresponding to profile
See Table 3 for the applicable environment.
Table 3 The performance level of the composite film corresponds to the applicable environment of the profile
Applicable environment for composite film performance grade profiles
Class IV solar radiation is intense, atmospheric corrosion is severe
Class III solar radiation with strong atmospheric corrosion
Class II solar radiation intensity is general, the atmosphere is slightly corrosive
4.1.5 Tags and examples
Profile marking by product name, this part number, grade, status, section code and length, color, composite film performance level, film code
The order of the representation. Examples of tags are as follows.
Example 1.
6063 grade, T5 state, section code is 421001, the length of the length is 6000mm bronze, the film code is EA21, grade II performance electrophoretic paint type
Material, marked as.
Electrophoresis profile GB/T 5237.3-6063T5-421001×6000 bronze II EA21
Example 2.
6063 grade, T5 state, cross-section code is 421001, white with a length of 6000mm, film code ES21, grade II performance electrophoretic paint profile,
Mark as.
Electrophoresis profile GB/T 5237.3-6063T5-421001×6000 white II ES21
4.2 Quality Assurance
4.2.1 Process
Process assurance see A.1.
4.2.2 Raw materials
The quality of the substrate, the quality of the chemical reagents and additives for anodizing surface treatment, and the quality of the electrophoretic coating are given in A.2.
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 composite film) should meet the requirements of GB/T 5237.1.
4.6 Film properties
4.6.1 Film thickness
The film thickness requirements on the decorative surface shall comply with the requirements of Table 4. The film thickness level should be indicated on the order form (or contract), and the film thickness level is not indicated.
For the profile of the film type transparent film, the grade B is supplied.
Table 4 Composite film thickness requirements
Film thickness level
Film thickness a
Mm
Anodized film local film thickness paint film local film thickness composite film local film thickness
A ≥9 ≥12 ≥21
B ≥9 ≥7 ≥16
S ≥6 ≥15 ≥21
a Due to the complexity of the cross-sectional shape of the profile, it is permissible to have a local film thickness of certain surfaces (such as internal corners, grooves, etc.) below the specified value.
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. If the demand side requires the instrument method to measure, the allowable color difference value shall be agreed between the supplier and the buyer.
4.6.3 Paint film hardness
After the pencil scratch test, the hardness of the paint film should not be less than 3H.
4.6.4 Paint film adhesion
The dry adhesion and wet adhesion of the paint film should reach level 0.
4.6.5 boiling water resistance
After the boiling water immersion test, the surface of the paint film should be free of wrinkles, cracks, air bubbles, no peeling or discoloration, and the adhesion should reach 0.
4.6.6 Wear resistance
The abrasion resistance can be measured by a falling sand test or a spray grinding test. When using the falling sand test, the amount of falling sand should be no less than 3300g; when using the jet grinding test,
The blasting time should be no less than 35s. The test method used for wear resistance shall be agreed between the supplier and the buyer, and shall be indicated in the order form (or contract), without specifying
At the time, it was carried out according to the falling sand test.
4.6.7 Hydrochloric acid resistance
After the hydrochloric acid resistance test, the surface of the composite membrane should be free of bubbles or other significant changes.
4.6.8 Alkali resistance
After the alkali resistance test, the protection level should be no less than 9.5.
4.6.9 Mortar resistance
After the mortar resistance test, the surface of the composite film should not fall off or other obvious changes.
4.6.10 Solvent resistance
After the solvent resistance test, the anodized film was not exposed on the surface of the profile.
4.6.11 Detergent resistance
After the detergent resistance test, the surface of the composite membrane should be free of blistering, shedding or other significant changes.
4.6.12 Resistance to heat and humidity
After the heat and humidity resistance test, the comprehensive damage level of the composite membrane surface should reach Grade 1.
4.6.13 Salt spray corrosion resistance
The copper accelerated acetate spray (CASS) test results and the acetate spray (AASS) test results are to comply with Table 5. Salt spray corrosion resistance
The test method adopted by the property shall be agreed between the supplier and the buyer, and shall be indicated in the order form (or contract). If not specified, the accelerated acetic acid salt spray test shall be carried out according to the copper.
Row. When required by the purchaser, it can also be carried out according to the neutral salt spray (NSS) test. The neutral salt spray test time and test results should be supplied by both parties.
GB/T 8013.2 agreed.
Table 5 Salt spray corrosion resistance, accelerated weather resistance and UV salt spray combined test results
complex
Membrane
energy level
Salt spray corrosion resistance
AASS test CASS test
test
time
protection
grade
test
time
protection
grade
Accelerated weatherability
Xenon illumination
Accelerated aging test
test
time
test
result
UV salt spray combined test results
Method A Method B
Fluorescent purple
External light spoke
Shot test
CASS
test
test
time
test
time
protection
grade
Fluorescent purple
External light spoke
Shot test
AASS
test
test
time
test
time
protection
grade
Class IV 1500 ≥ 9.5 Class 120 ≥ 9.5 Class 4000
Class III 1500 ≥ 9.5 Class 120 ≥ 9.5 Class.2000
Class II 1000 ≥ 9.5 Class 72 ≥ 9.5 Class 1000
Powder grade
To level 0, gloss
Retention rate a ≥
75%, color difference
ΔE*ab≤3.0
240 120 ≥9 level 240 1500 ≥9 level
240 120 ≥9 level 240 1500 ≥9 level
240 72 ≥9 level 240 1000 ≥9
a Gloss retention is the percentage of the gloss value after the paint film test relative to the gloss value before the test.
4.6.14 UV salt spray combined test results
The results of the combined test of UV salt spray should comply with the requirements of Table 5. The combined test of UV salt spray should be agreed between the supplier and the buyer to use the provisions specified in Table 5.
Method A or Method B is carried out and indicated in the order form (or contract). If not specified, it is carried out according to Method A specified in Table 5.
4.6.15 Weather resistance
4.6.15.1 Accelerated weatherability
The accelerated weather resistance of the composite film shall comply with the requirements of Table 5.
4.6.15.2 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).
4.6.16 Other
When the demand side has requirements for other performances, the supplier and the buyer shall refer to GB/T 8013.2 for specific agreement and indicate in the order form (or contract).
4.7 Appearance quality
The appearance quality of the profile before painting shall comply with the relevant provisions of GB/T 5237.2. Painted film should be uniform, neat, and not allowed
Wrinkles, cracks, air bubbles, flow marks, inclusions, stickiness, and peeling of the paint film affect defects in use. But allowed within 80mm of the profile end
Partially free of film.
5 Test methods
5.1 Chemical composition
The chemical composition analysis method is carried out in accordance with the provisions of GB/T 5237.1. The composite film on the surface of the sample should be removed before the test.
5.2 Mechanical properties
The test method of mechanical properties is carried out in accordance with the provisions of GB/T 5237.1.
5.3 Dimensional deviation
The method for detecting the dimensional deviation is carried out in accordance with the provisions of GB/T 5237.1.
5.4 Film properties
5.4.1 Film thickness
5.4.1.1 Anodized film, composite film local film thickness
According to the measurement principle specified in GB/T 8014.1, the eddy current thickness measurement method in GB/T 4957 or the microscope in GB/T 6462 is adopted.
The method is measured. The arbitration test was carried out according to the microscope method specified in GB/T 6462.
5.4.1.2 Local film thickness of paint film
According to the measurement principle specified in GB/T 8014.1, the eddy current thickness measurement method in GB/T 4957 or the microscope in GB/T 6462 is adopted.
The method is measured. The arbitration test was carried out according to the microscope method specified in GB/T 6462. When using the eddy current thickness measurement method, it can be in any of the following order
get on.
a) measuring the local film thickness of the composite film, and then subtracting the local film thickness of the anodized film measured according to 5.4.1.1 is the local film thickness of the paint film;
b) measuring the partial film thickness of the composite film, and then removing the surface paint film with a stripping agent or related equipment, and then measuring the local film thickness of the anodized film,
The difference between the two is the local film thickness of the paint film.
5.4.2 Color difference
5.4.2.1 Visual measurement
According to the provisions of GB/T 12967.6.
5.4.2.2 Instrumental assay
According to GB/T 11186.2, GB/T 11186.3.
5.4.3 Paint film hardness
The pencil hardness test was carried out according to GB/T 6739, and the test results were evaluated according to the scratch condition of the surface paint film.
5.4.4 Paint film adhesion
5.4.4.1 Dry adhesion
5.4.4.1.1 According to the provisions of GB/T 9286, the cross-cut spacing is 1mm.
5.4.4.1.2 Cover the adhesive film with adhesive force greater than 10N/25mm on the cross-cut paint film and press it to remove the air under the adhesive tape.
The tape is quickly pulled up at an angle perpendicular to the surface of the paint film and then rated according to the provisions of GB/T 9286.
1) Scotch 610 adhesive tape or Permacel 99 adhesive tape is an example of a suitable commercial product. This information is given to facilitate the use of this section.
It does not imply endorsement of these products.
5.4.4.2 Wet adhesion
After the sample is cut according to the provisions of 5.4.4.1.1, it is place...
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