This standard specifies the technical requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage of powder electrostatic spray coatings for aluminum alloy door and window profiles. This standard applies to the coating of thermosetting powder coatings for profiles. JG/T 3045.1-1998 Technical conditions for powder electrostatic spray coatings for aluminum alloy door and window profiles JG/T3045.1-1998 Standard download decompression password: www.bzxz.net
This standard specifies the technical requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage of powder electrostatic spray coatings for aluminum alloy door and window profiles. This standard applies to the coating of thermosetting powder coatings for profiles.

The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards.
GB 175-92 Portland cement Ordinary Portland cement
GB 178-77 Standard sand for cement strength test
GB/T 1732-93 Determination of impact resistance of paint film
GB 1740-79 Determination of moisture and heat resistance of paint film
GB 1764-79 Determination of paint film thickness
GB/T 1766-1995 Rating method for aging of paints and varnishes
GB/T 1771-91 Determination of neutral salt spray resistance of paints and varnishes
GB/T 1865-1997 Artificial weathering and artificial radiation exposure of paints and varnishes-Filtered xenon arc radiation
GB/T 3199-1996 Packaging, marking, transportation and storage of aluminum and aluminum alloy processed products
GB 5237-93 Aluminium alloy building profiles
GB/T 6739-1996 Pencil method for determination of coating hardness
GB 9286-88 Cross-cut test for paint and varnish films
JC/T 481-92 Hydrated lime powder for building

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Construction Industry Standard of the People's Republic of China JG/T3045.1-1998
Technical Conditions of Powder Electrostatic
Spraying Coating for Profiled Aluminium Alloy Doors and Windows
Specification of franklinism powder spraying coatingfor doors and saches of profiled aluminium alloyConstruction Standard
Published on 1998-02-09
Implementation on 1998-06-01
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JG/T3045.1—1998
This standard is formulated on the principles of standardization work guidelines GB/T1.1-1993 and GB/T1.3-1997, citing relevant national standards and combining the product's own characteristics. During the formulation of this standard, the Japanese standard JIS K5981-1992 "Coatings of synthetic resin powder coating products" and the British standard BS6496-1984 "British standard specification for powder organic coatings applied to aluminum alloy extrusions, sheets and prefabricated profiles for building exteriors and baked and powder organic coatings applied to aluminum alloy extrusions, sheets and prefabricated profiles as final finishes" were adopted in a non-equivalent manner.
This standard was proposed by the Standard and Quota Research Institute of the Ministry of Construction. This standard is under the jurisdiction of the China Building Standard Design Institute, the technical unit responsible for building products and equipment standards of the Ministry of Construction. The drafting units of this standard are: Zhejiang Provincial Architectural Science and Design Institute, China Building Metal Structure Association, Zhuji Aluminum Alloy Steel Door and Window Factory, Deqing Mingquan Electrostatic Equipment Manufacturing Company, Huangshan Huajia Chemical Co., Ltd. The main drafters of this standard are: Cen Rujun, Yan Leiguang, Zhang Baokang, Si Guoguang, Sun Yi, Huang Liming. This standard is entrusted to Zhejiang Academy of Building Science for interpretation. bzsosO, m Engineering Construction Standard Full Text Information System
Construction Industry Standard of the People's Republic of China Aluminum Alloy Door and Window Profile Powder Electrostatic
Technical Conditions for Spraying Coating
Specification of franklinism powder spraying coatingfor doors and saches of profiled aluminium alloy 1 Scope
JG/T3045.1—1998
This standard specifies the technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of powder electrostatic spraying coatings for aluminium alloy door and window profiles (hereinafter referred to as profiles).
This standard applies to the coating of thermosetting powder coatings for profiles. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should discuss the use of the following GB175-92 Portland cement, ordinary Portland cement GB178-77 Standard sand for cement strength test GB/T1732-93 Determination of impact resistance of paint film GB1740-79 Determination of moisture and heat resistance of paint film
GB1764-79 Determination of paint film thickness
GB/T1766-1995 Rating method for coating aging of paints and varnishes GB/T1771-91 Determination of neutral salt spray resistance of paints and varnishes GB/T1865-1997 Artificial weathering and artificial radiation exposure of paints and varnishes (Filtered xenon arc radiation) GB/T3199-1996 Packaging, marking, transportation and storage of aluminum and aluminum alloy processed products GB5237-93 Aluminum alloy building profiles
GB/T6739-1996 Pencil determination of coating hardness GB9286-88 Cross-cut test of paint and varnish film JC/T481-92 Building slaked lime powder
3 Technical requirements
3.1 General requirements
3.1.1 The profiles shall meet the requirements specified in GB5237-93 and other relevant technical documents before electrostatic powder spraying. 3.1.2 The profile should be pre-treated before powder electrostatic spraying to remove impurities such as surface oil. 3.1.3 After surface pre-treatment, powder electrostatic spraying should be carried out within 24 hours. 3.1.4 Thermosetting pure polyester powder coating or acrylic powder coating with excellent weather resistance should be used. 3.2 Appearance of coating
3.2.1 The appearance of profile coating should be flat and smooth. .bzsso,om Engineering Construction Standard Full Text Information System
3.2.2 Profile coatings with any of the following conditions are all allowed defects: a) slight orange peel;
b) inconspicuous color difference.
3.2.3 Any of the following conditions on the profile coating shall be deemed as an unacceptable defect: a) severe orange peel;
6) obvious pinholes and shrinkage cavities;
c) severe color difference;
d) surface exposed or scratched;
Le) blistering:
f) partial shedding.
3.3 Color of coating
The color of the coating shall be basically consistent with the selected sample or color plate. 3.4
Thickness of coating
The average thickness of the decorative surface coating shall not be less than 50μm, and the minimum point shall not be less than 40um. Hardness of coating
The hardness of the coating shall not be less than H.
Impact resistance of coating
The impact resistance of the coating shall not be less than 3.0N·m. 3.7 Cross-cut test of coating
The cross-cut test of coating shall reach level 0 in the inspection result classification table in GB9286-88. 3.8
Moisture and heat resistance of coating
The moisture and heat resistance of coating shall be level 1 in the evaluation grade in GB1740-79. Mortar resistance of coating
There shall be no phenomenon of coating detachment and coating change due to the shadow of mortar and the removal of mortar. 3.10 Salt spray resistance of coating
Except within 2.0mm of the cross-cut line, the coating shall not fall off from the surface. 3.11 Permeation resistance of coating
The coating shall not bubble beyond 3mm from the edge of the test plate. 3.2 Weathering resistance of coating
Weathering resistance of coating shall be rated according to GB/T1766-1995 rating method, with single ratings as: loss of gloss level 1, discoloration level 1, powdering level 0; or in accordance with the specification of GBT1766-1995, the comprehensive rating is "self" Test method
4.1 Preparation of test panel
The test panel shall be cut from the profile, with a size of 120mm×60mm. 4.2 Appearance
Check with normal or corrected vision, under natural scattered light, with the eye about 30cm away from the test panel and at an angle of about 120 to 140 degrees. www.bzxz.net
4.3 Color
Overlap the test plate with the selected standard color plate by 1/4 area, and use normal or corrected vision, under natural scattered light, with the eye about 30cm away from the test plate and an angle of about 120-140 degrees, to check. 4.4 Thickness
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4.5 Hardness
Test on the test plate according to GB/T6739-1996. 4.6 Impact resistance
Test on the test plate according to GB/T1732-93. 4.7 Cross-cut test
Test on the test plate according to GB 9286-88, with an interval of 1mm. 4.8
Moisture and heat resistance
Test on the test plate according to GB1740-79 for 480h. 4.9 Mortar resistance
Mold paste is made by adding 15g slaked lime in accordance with JC/T481-92, 41g cement in accordance with GB175-92, 244g standard sand in accordance with GB178-77 and sufficient tap water. Apply a layer of mortar paste with a thickness of not less than 2mm on each test plate and place it at a temperature of 38℃±3℃ and 95%±5% relative humidity for 24h. Then, wipe the mortar paste from the surface of the test plate by hand, wipe off any residue on it with a soft wet cloth, and check with normal or corrected vision. 4.10 Salt spray resistance test
Draw two cross diagonal lines on the test plate (the scratches are deep to the metal matrix, the diagonal lines do not penetrate the diagonals, and the end points of the diagonals are equidistant from the diagonals), and then test for 480h according to GB/T1771-91. After the test, the corrosion flow should not leave the scratch line for 2.0mm, and there should be no trace of corrosion on the rest. Wash the test board with clean water and dry it at 23℃±2℃ for 24 hours, then stick a piece of tape about 25mm×150mm on the cutting area, and then quickly pull it apart in the direction perpendicular to the test board. 4.11 Coating Permeability
Add distilled water to the pressure cooker to a depth of 25mm±3mm, partially immerse the test plate in the water to a length of at least 25mm, and tighten the lid.
Heat the pressure cooker until steam gushes out of the valve, add load to make the internal pressure 0.1MPa±0.01NPa, continue heating for 2h from the first gust of steam, then cool carefully, take out the test plate, and check immediately. 4.12 Coating Weatherability
Perform the test in accordance with GB/T1865-1997 for 480h. 5 Inspection rules
5. Factory inspection
The items for factory inspection are 3.2, 3.3, 3.4, 3.5, 3.6, and 3.7. 5.2 Type inspection
The items for type inspection are 3.2~3.12 in this technical specification, a total of 115.2.1 Type inspection should be carried out in any of the following situations: a) When the first production or production is resumed after suspension for more than half a year; b) After two years of continuous production;
c) When the powder coating variety is changed or the production process is significantly changed; d) When the factory inspection results are significantly different from the last type inspection; e When the national quality supervision agency proposes a type inspection requirement. 5.2.2 When conducting type inspection, the weather resistance performance is allowed to be based on the test report provided by the powder coating manufacturer by the national statutory testing unit.
5.3 Sampling rules
Profiles should be submitted for inspection in batches. Each batch should consist of profiles of the same color. The quantity of each batch is the quantity of one shift. The batch less than one shift is also considered as one batch.
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Three test plates are tested.
5.4 Judgment rules
Profile coatings must all be qualified according to this standard. If one or more items are unqualified, the unqualified items should be double sampled for inspection. If there is still one unqualified item, the coating of the batch of profiles is judged to be unqualified. Marking, packaging, transportation, purchase and storage
The marking shall comply with the requirements of GB/T3199-1996, and indicate that the profile is decorated and protected by powder electrostatic spray coating, and note the color of the coating
6.2 Packaging, transportation, storage
Packaging, transportation and storage shall comply with the requirements of GB/T3199-1996. V88
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