Some standard content:
Record number: 38781999
HG/T3656—1999
Steel structure bridge paint is widely used on steel structure bridges due to its special properties, playing a protective and decorative role. It has developed rapidly in my country in recent years, but there has been no unified standard. In order to stabilize and improve the quality of such products and meet the needs of different users, this standard is specially formulated.
This standard is formulated based on the product quality requirements of major domestic steel structure bridge paint manufacturers and in reference to relevant domestic and foreign standards. Since steel structure bridge paint includes a wide variety of varieties, this standard is formulated as a general technical condition. Appendix A of this standard is a prompt appendix.
This standard was proposed by the Technical Supervision Department of the former Ministry of Chemical Industry of the People's Republic of China. This standard was drafted by the National Technical Committee for Standardization of Paints and Pigments. The main drafting units of this standard are Dajin Lighthouse Paint Co., Ltd., Shenyang Application Technology Experimental Factory, 725 Institute of China Shipbuilding Corporation, and the participating drafting units of this standard are Changzhou Paint Chemical Research Institute of the Ministry of Chemical Industry, Shanghai Kailindao Paint Factory, Wuxi Barun Paint Chemical Co., Ltd., Wuhan Shuanghu Paint Co., Ltd., Chongqing Three Gorges Paint Co., Ltd., Tianjin Dongguang Special Paint Factory, Jiangsu Wutao Kaixing Paint Factory, Jiangsu Wujin Xiaorong Anticorrosion Material Factory, Hunan Metal Materials Corporation Hunan Jinsheng Chemical Anticorrosion Research Center, Hangzhou Paint Guang
The main drafters of this standard are Lu Xiushu, Zhai Huiye, Yuan Shuai Xiaobo, Tu Ailing, Fang Junzhen, 1 Scope
Chemical Industry Standard of the People's Republic of China
Paints for steel structure bridges
bridgcHG/T3656-1999
This standard specifies the requirements, test methods, inspection rules and marking, labeling, packaging, transportation and storage of steel structure bridge paint products. This standard applies to the general technical conditions of topcoats, primers and intermediate paints for steel structure bridges, and also applies to topcoats, primers and intermediate paints for other steel structure coatings in atmospheric environments. 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. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1728-79 (89) Determination of drying time of coating and putty film GB3/T1732-93 Determination of impact resistance of paint film GB/T1733-93 Determination of water resistance of paint film GB/T1763-79 (89) Determination of chemical resistance of paint film CB/T1765-79 (89) Preparation method for paint film for determination of resistance to moisture and heat, salt spray and weathering (artificial acceleration) GB/T1766-1995 Rating method for aging of paint and varnish coatings (neg JSO4628-1-4628-5: 1980) GB/T1771-91 Determination of neutral salt spray resistance of paint and varnish (cnV1SO 7253: 1984) GB/T 1865-1997 Artificial weathering and artificial radiation exposure of paints and varnishes (filtered xenon arc radiation) (eqvISO1134111994)
GB318G-82 (89) Standard test panels for paint products (neg ISO1512:1974) GB/T 6742-86 Bending test of paint films (cylindrical mandrel) (neq ISO1519:1973) GB/T 753.1-86 Determination of grinding fineness of paints (eqyISO1524:1983) GB/T 6753.3-86 Test method for storage stability of paints GB/T 6753.6-86 Large area brushing test of paint products (egvISO/TR3172:1974) GB/T 9271-88 Standard test panels for paints and varnishes (eqvISO1514:1984) GB9278-88 Conditioning and Test temperature and humidity (eqV1SO3270: 1984) GB/T9286-98 Cross-cut test for paint and varnish film (egVISO2409: 1972) GB/T13452.2-92 Determination of paint and varnish film thickness (egvISO2808: 1974) GR/T13491--92 General rules for packaging of coating products HG/T2458-93 General rules for inspection, transportation and storage of coating products 3 Product classification
The products are divided into two categories: ordinary type and long-lasting type.
3.1 Ordinary type
Approved by the State Administration of Petroleum and Chemical Industry on June 16, 1999 and implemented on June 1, 2000
HG/T 3656-1999
According to the service life of 5-~15 years, it is generally called ordinary type (including primer and topcoat). 3.2 Long-lasting paints are generally called long-lasting paints (including primer, intermediate paint and topcoat) if their service life is more than 15 years. 4 Requirements The performance of topcoat products shall comply with the requirements in Table 1. 4.1
Table 1 Performance requirements
State in container
Appearance of paint film
Fineness, um
Paint containing flake (metal) pigmentswwW.bzxz.Net
Adhesion (cross-hatch method), grade
Bending resistance
Impact resistance, cm
Drying time, h
Water resistance
Workability
Storage stability
Skinning, grade
Settling (. grade
People.T plus continuous aging
Salt spray resistance
Ordinary topcoat
Long-lasting topcoat
No lumps after stirring, in a uniform state
Smooth film
2, no damage
8 h No blistering, no peeling, allowable I
Slight gloss loss and discoloration
No problem with spraying and brushing
No blistering, no cracking for 400h, allowable secondary discoloration and secondary powdering
4.2 The performance of primer and intermediate products shall comply with the provisions of Table 2. Table 2 Performance requirements
State in container
Appearance of paint film
Fineness pm| |tt||Paint containing flake (metal) pigments
Adhesion (grid sheet) grade
Bending resistance, mm
Impact resistance, n
Drying time, h
Salt water resistance (3% NaC) solution)
Storage stability
Skinning, grade
Sedimentation (ly), grade
Application
12 h No blistering or peeling, slight gloss loss and discoloration allowed
No obstacles in spraying or brushing
600 h No blistering or cracking, grade discoloration and grade powdering allowed
1000 h No blistering or peeling
Ordinary primer
Long-lasting primer
No lumps after stirring, evenly mixed
The paint film is flat, slight brush marks allowed
No blistering or rusting for 240h
Slight blistering or rusting for 144hNo obstacles in spraying or brushing
Long-lasting intermediate paint
5 Test method
5.1 Sampling
HG/T 3656
Products shall be sampled in accordance with the provisions of CB3186. The sample should be divided into two parts, one sealed and stored for future reference, and the other for inspection. If it is found that the product quality does not meet the standard technical indicators, the supply and demand parties shall jointly resample according to the provisions of GB 3186. 5.2 Test conditions
According to the provisions of GB9278.
5.3 Preparation of test samples
5.3.1 The test base plate shall be processed according to the provisions of GB/T9271. The dry explosion time, adhesion, bending resistance, impact resistance and water resistance tests are tinplate plates (size is 120 mm×50 mmX0.3 mm). The construction test shall be carried out according to the provisions of GB/T6753.6. The remaining tests are steel plates (unless otherwise specified, the size is 15mm×7mm×1mm). 5.3.2 The film thickness measurement shall be carried out according to the provisions of GB/T13452.2. Adhesion, bending resistance, impact resistance, and water resistance should be measured 48 hours after the film is prepared. The film thickness requirement is (35±2) μm. Other performance measurements should be made 168 hours after the film is prepared. 5.3.3 Artificial accelerated aging and salt spray resistance measurements require that the primer, intermediate paint, and topcoat be matched and measured. The interval between each layer, the total thickness of the film, and the board treatment before painting should be carried out in accordance with the matching requirements of each factory. 5.4 State in the container
Open the container and stir with a spatula or a stirrer. It is allowed that there is sediment at the bottom of the container. If it is easy to mix and evenly after stirring, it is rated as "no lumps after stirring, and in a uniform state."
5.5 Appearance of paint film
Visual inspection.
5.6 Fineness
According to GB/T6753.1.
5.7 Adhesion
According to GB/T9286, the grid spacing is 2 mm. 5.8 Bending resistance
According to GB/T 6742.
5. 9 Impact resistance
According to GB/T1732,
5.10 Drying time
According to GB/T1728, among which surface drying is carried out according to method A and actual drying is carried out according to method B. 5.11 Water resistance
According to GB/T1733.
5.12 Workability
According to GB/T 6753.6.
5.13 Storage stability
5.13.1 Sedimentation
Perform according to GB/T6753.3.
5.13.2 Skinning
Pour about 90 mL of the sample into a 120 mL wide-mouth bottle with a lid, cover the bottle immediately, place the bottle in a dark place for 24 h, then take out the bottle, open the lid, tilt the bottle and touch the surface of the sample with a glass rod: check the fluidity of the surface layer, if the surface layer is still liquid, it is rated as "no skinning", and the rating is carried out according to GB/T6753.3. 5.14 Artificial accelerated aging
Prepare film according to GB/T17G5: Determine according to GB/T1865: Rate according to GB/T17G6, 13
5. 15 Salt spray resistance
HG/T 3656—1999
Prepare film according to GB/T1765; Determine according to GB/T1771. 5.16 Salt water resistance
Determine according to GB/T1763
6 Inspection rules
6.1 Determine according to JIG/T2458
6.2 All performance requirements listed in this standard are type inspection items. Among them, the state in the container, the appearance of the paint film, fineness, adhesion, bending resistance, impact resistance, drying time, and water resistance are the factory inspection items. The application, storage stability, artificial accelerated aging, salt and cold resistance, and salt water resistance are inspected once a year.
7 Marking, labeling, packaging, transportation, storage 7.1 Marking, labeling
The product should be accompanied by a mark and label indicating: the product's standard number, model, name. Net content, quality certification mark, manufacturer's name, factory certificate and production date, batch number, ratio, and instructions for use. 7.2 Packaging
According to GB/T 13491.
7. 3 Transportation, purchase and storage
According to HG/I2458, the storage period is determined by each manufacturer according to their own product requirements and indicated on the mark. 14
A1 Requirements
HG/T3656-1999
Appendix A
(Suggested Appendix)
Construction Reference
When painting steel structure bridges, the surface of the steel beams must be cleaned, and the scale, rust and other impurities must be removed by sandblasting or shot blasting. The sandblasting must be done to Sa2.5 level; the coating thickness, installation interval and other requirements must be in accordance with the requirements of each matching system. A2 Steel Structure Bridge Painting Examples
Example 1: The matching painting of a domestic bridge (total length 8346 m) is in the steel structure manufacturing! Painting inside the car; rust removal by sandblasting and shot blasting reaches Sa2.5 level, roughness 40~-80MIr. The first coat of epoxy zinc-rich primer. The second coat of epoxy micaceous iron oxide primer. The third coat of chlorinated rubber thick film paint (orange-red). Painting on site: First, repair the paint film damaged during transportation and installation. The fourth coat of chlorinated rubber thick film paint (orange-red). The total thickness of the paint film is .270μm. Example 2: Epoxy zinc-rich primer + micaceous iron epoxy thick film paint + iron red chlorinated rubber thick film paint + aluminum powder oxidation rubber acrylic enamel. Example 3: Epoxy zinc-rich thick film paint + micaceous iron epoxy thick film paint + gray micaceous iron acrylic polyurethane enamel 80μm
100μm
45 μm
The paint film thickness is 90 μm for primer, 100 μm for middle paint, and 75 μm for surface paint. μm, the total thickness of the paint film is 265 μm. The weather resistance period is up to 20 years. Example 1: Epoxy zinc-rich primer + epoxy anti-rust paint + epoxy mica thick polyslurry primer + chlorinated rubber waist topcoat or acrylic polyurethane topcoat. The film thickness is 40 μm for primer and 80 μm for anti-rust paint. Thick paste primer is 100 μm, topcoat is 70 μm or 100 μm, and the total film thickness is about 260 μm.
A3 Domestic steel structure bridge common type matching coating example Example 1: Red lead alkyd anti-rust paint + gray micaceous iron alkyd topcoat. The film thickness is 80 μm for primer and 120 mm for topcoat, with a total thickness of 200 μm. Example 2: Red lead phenolic anti-rust paint or micaceous iron phenolic anti-rust paint + gray micaceous iron alkyd topcoat with a total thickness of 200 μm.
Example 3: Red lead phenolic anti-rust paint + gray aluminum zinc alkyd enamel paint film thickness is 80um for primer and 120um for topcoat. A4 Introduction to common primer, topcoat, long-lasting primer, intermediate paint and topcoat Common primers include red lead alkyd anti-rust paint, red lead phenolic anti-rust paint, micaceous iron phenolic anti-rust paint, brown polyurethane anti-rust paint, etc. Common topcoats include gray micaceous iron alkyd enamel, gray aluminum zinc alkyd enamel and gray lead powder graphite alkyd enamel. Long-lasting primers include epoxy zinc-rich primer, epoxy zinc-rich thick film paint, chlorinated rubber primer, epoxy mica iron oxide thick paste primer, epoxy antirust primer, mica iron epoxy antirust paint, epoxy polyurethane anticorrosive primer, inorganic zinc-rich primer. Long-lasting intermediate paints include epoxy thick film paint, mica iron epoxy thick film paint, chlorinated rubber thick film paint, epoxy mid-coat, chlorinated rubber mid-coat, epoxy asphalt mid-coat.
HG/T3656—1999
Long-lasting topcoats include acrylic polyurethane enamel, mica iron organic silicon alkyd enamel, mica iron chlorinated rubber alkyd enamel, chlorinated rubber acrylic enamel, oxidized rubber topcoat, chlorinated rubber thick film topcoat, epoxy polyurethane anticorrosive topcoat. A5
Multi-component coatings
Mix evenly before use according to the product instructions, and mix and stir according to the ratio, use as soon as mixed, and use up within the specified time.3 Transportation, purchase and storage
According to HG/I2458, the storage period is determined by each manufacturer according to their own product requirements and indicated on the sign. 14
A1 Requirements
HG/T3656-1999
Appendix A
(Appendix of reminder)
Construction reference
When painting steel structure bridges, the surface of the steel beams must be cleaned, and the oxide scale, rust and other impurities must be removed by sandblasting or shot blasting. Sandblasting should be performed to Sa2.5 level; the coating thickness, installation interval and other requirements must be in accordance with the requirements of each matching system. A2 Steel Structure Bridge Painting Example
Example 1: The matching painting of a domestic bridge (total length 8346 m) is in the steel structure manufacturing! Painting inside the car; rust removal by sandblasting and shot blasting reaches Sa2.5 level, roughness 40~-80MIr. The first coat of epoxy zinc-rich primer. The second coat of epoxy micaceous iron oxide primer. The third coat of chlorinated rubber thick film paint (orange-red). Painting on site: First, repair the paint film damaged during transportation and installation. The fourth coat of chlorinated rubber thick film paint (orange-red). The total thickness of the paint film is .270μm. Example 2: Epoxy zinc-rich primer + micaceous iron epoxy thick film paint + iron red chlorinated rubber thick film paint + aluminum powder oxidation rubber acrylic enamel. Example 3: Epoxy zinc-rich thick film paint + micaceous iron epoxy thick film paint + gray micaceous iron acrylic polyurethane enamel 80μm
100μm
45 μm
The paint film thickness is 90 μm for primer, 100 μm for middle paint, and 75 μm for surface paint. μm, the total thickness of the paint film is 265 μm. The weather resistance period is up to 20 years. Example 1: Epoxy zinc-rich primer + epoxy anti-rust paint + epoxy mica thick polyslurry primer + chlorinated rubber waist topcoat or acrylic polyurethane topcoat. The film thickness is 40 μm for primer and 80 μm for anti-rust paint. Thick paste primer is 100 μm, topcoat is 70 μm or 100 μm, and the total film thickness is about 260 μm.
A3 Domestic steel structure bridge common type matching coating example Example 1: Red lead alkyd anti-rust paint + gray micaceous iron alkyd topcoat. The film thickness is 80 μm for primer and 120 mm for topcoat, with a total thickness of 200 μm. Example 2: Red lead phenolic anti-rust paint or micaceous iron phenolic anti-rust paint + gray micaceous iron alkyd topcoat with a total thickness of 200 μm.
Example 3: Red lead phenolic anti-rust paint + gray aluminum zinc alkyd enamel paint film thickness is 80um for primer and 120um for topcoat. A4 Introduction to common primer, topcoat, long-lasting primer, intermediate paint and topcoat Common primers include red lead alkyd anti-rust paint, red lead phenolic anti-rust paint, micaceous iron phenolic anti-rust paint, brown polyurethane anti-rust paint, etc. Common topcoats include gray micaceous iron alkyd enamel, gray aluminum zinc alkyd enamel and gray lead powder graphite alkyd enamel. Long-lasting primers include epoxy zinc-rich primer, epoxy zinc-rich thick film paint, chlorinated rubber primer, epoxy mica iron oxide thick paste primer, epoxy antirust primer, mica iron epoxy antirust paint, epoxy polyurethane anticorrosive primer, inorganic zinc-rich primer. Long-lasting intermediate paints include epoxy thick film paint, mica iron epoxy thick film paint, chlorinated rubber thick film paint, epoxy mid-coat, chlorinated rubber mid-coat, epoxy asphalt mid-coat.
HG/T3656—1999
Long-lasting topcoats include acrylic polyurethane enamel, mica iron organic silicon alkyd enamel, mica iron chlorinated rubber alkyd enamel, chlorinated rubber acrylic enamel, oxidized rubber topcoat, chlorinated rubber thick film topcoat, epoxy polyurethane anticorrosive topcoat. A5
Multi-component coatings
Mix evenly before use according to the product instructions, and mix and stir according to the ratio, use as soon as mixed, and use up within the specified time.3 Transportation, purchase and storage
According to HG/I2458, the storage period is determined by each manufacturer according to their own product requirements and indicated on the sign. 14
A1 Requirements
HG/T3656-1999
Appendix A
(Reminder Appendix)
Construction Reference
When painting steel structure bridges, the surface of the steel beams must be cleaned, and the oxide scale, rust and other impurities must be removed by sandblasting or shot blasting. Sandblasting should be performed to Sa2.5 level; the coating thickness, installation interval and other requirements must be in accordance with the requirements of each matching system. A2 Steel Structure Bridge Painting Example
Example 1: The matching painting of a domestic bridge (total length 8346 m) is in the steel structure manufacturing! Painting inside the car; rust removal by sandblasting and shot blasting reaches Sa2.5 level, roughness 40~-80MIr. The first coat of epoxy zinc-rich primer. The second coat of epoxy micaceous iron oxide primer. The third coat of chlorinated rubber thick film paint (orange-red). Painting on site: First, repair the paint film damaged during transportation and installation. The fourth coat of chlorinated rubber thick film paint (orange-red). The total thickness of the paint film is .270μm. Example 2: Epoxy zinc-rich primer + micaceous iron epoxy thick film paint + iron red chlorinated rubber thick film paint + aluminum powder oxidation rubber acrylic enamel. Example 3: Epoxy zinc-rich thick film paint + micaceous iron epoxy thick film paint + gray micaceous iron acrylic polyurethane enamel 80μm
100μm
45 μm
The paint film thickness is 90 μm for primer, 100 μm for middle paint, and 75 μm for surface paint. μm, the total thickness of the paint film is 265 μm. The weather resistance period is up to 20 years. Example 1: Epoxy zinc-rich primer + epoxy anti-rust paint + epoxy mica thick polyslurry primer + chlorinated rubber waist topcoat or acrylic polyurethane topcoat. The film thickness is 40 μm for primer and 80 μm for anti-rust paint. Thick paste primer is 100 μm, topcoat is 70 μm or 100 μm, and the total film thickness is about 260 μm.
A3 Domestic steel structure bridge common type matching coating example Example 1: Red lead alkyd anti-rust paint + gray micaceous iron alkyd topcoat. The film thickness is 80 μm for primer and 120 mm for topcoat, with a total thickness of 200 μm. Example 2: Red lead phenolic anti-rust paint or micaceous iron phenolic anti-rust paint + gray micaceous iron alkyd topcoat with a total thickness of 200 μm.
Example 3: Red lead phenolic anti-rust paint + gray aluminum zinc alkyd enamel paint film thickness is 80um for primer and 120um for topcoat. A4 Introduction to common primer, topcoat, long-lasting primer, intermediate paint and topcoat Common primers include red lead alkyd anti-rust paint, red lead phenolic anti-rust paint, micaceous iron phenolic anti-rust paint, brown polyurethane anti-rust paint, etc. Common topcoats include gray micaceous iron alkyd enamel, gray aluminum zinc alkyd enamel and gray lead powder graphite alkyd enamel. Long-lasting primers include epoxy zinc-rich primer, epoxy zinc-rich thick film paint, chlorinated rubber primer, epoxy mica iron oxide thick paste primer, epoxy antirust primer, mica iron epoxy antirust paint, epoxy polyurethane anticorrosive primer, inorganic zinc-rich primer. Long-lasting intermediate paints include epoxy thick film paint, mica iron epoxy thick film paint, chlorinated rubber thick film paint, epoxy mid-coat, chlorinated rubber mid-coat, epoxy asphalt mid-coat.
HG/T3656—1999
Long-lasting topcoats include acrylic polyurethane enamel, mica iron organic silicon alkyd enamel, mica iron chlorinated rubber alkyd enamel, chlorinated rubber acrylic enamel, oxidized rubber topcoat, chlorinated rubber thick film topcoat, epoxy polyurethane anticorrosive topcoat. A5
Multi-component coatings
Mix evenly before use according to the product instructions, and mix and stir according to the ratio, use as soon as mixed, and use up within the specified time.
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