Recently, the acceptance work of 19 trains and 8-carriage subway vehicles of Beijing Metro Line 3 was successfully completed. As the exclusive supplier of water-based coatings for trains in this project, Zhongshan Daqiao Chemical Group provides a complete set of water-based coatings product system from putty, primer, intermediate coating to top coat and varnish for its car bodies and bogies, helping subway vehicles from a professional perspective of coatings The appearance is upgraded and the anti-corrosion quality is guaranteed to further improve the operating life cycle of the vehicle. At the same time, lower VOC emissions and carbon dioxide emissions can also better help subway vehicles realize the transformation and upgrading of green manufacturing.
It is the first time in China to realize fully automatic coupling and flexible marshalling
Beijing Metro Line 3 will carry out environmental protection to the end
The 19 rows of 8-carriage subway vehicles deployed in the first phase of Beijing Metro Line 3 are the first fully automatic driving subway vehicles in China to realize fully automatic linkage and flexible marshalling. Metro Line 3 adopts 4+4 multi-link fully automatic driverless technology, with a maximum operating speed of 80 kilometers per hour and a maximum passenger capacity of 3456 people. On the premise of realizing flexible grouping of vehicles, it can realize cross-line interconnection with Line 12.
Different from the existing line vehicles, the vehicles of Line 3 and Line 12 can realize mutual reconnection and mixed operation, and can realize 4-8 mixed-arranged passenger-carrying operation on the operation line, and have the function of fully automatic driving mode. While improving passenger ride experience and reducing waiting time, it will also reduce the number of kilometers traveled by vehicles and save overall energy consumption on the line, achieving the goal of “quality service, energy saving and emission reduction, cost reduction and efficiency increase”.
In order to implement greenness to the end, Beijing Subway adopted a water-based coating process in the vehicle manufacturing stage, and selected the water-based rail transit coating system of Zhongshan Bridge Chemical Group, which not only achieves energy-saving and environmental protection manufacturing, but also provides better anti-corrosion protection for the comprehensive performance of vehicles.
Excellent combination of green transportation & environmental protection coating
Cooperation between Beijing Subway and Zhongshan Bridge Chemical Group
In 2020, as a leader in the domestic rail transit coating industry, Zhongshan Daqiao Chemical Group will supply supporting water-based coatings for the vehicles of the Beijing Subway Changping Line South Extension Project. This project is also the first time that Beijing Subway uses water-based coatings, and the overall effect is excellent.
Relying on the excellent product performance and on-site technical support in the south extension project of Beijing Metro Changping Line, our company will cooperate with Beijing Metro again in 2021 and officially become the exclusive water-based coating supplier for the 19-column and 8-carriage subway vehicle project of the first phase of Beijing Metro Line 3 .
Zhongshan Daqiao Chemical Group provides a complete set of water-based rail transit coating products for the subway vehicles of Beijing Metro Line 3, including water-based primers, putty for water-based paints, water-based primers, water-based top coats, water-based metallic paints and water-based varnishes, etc., mainly Applied to the surface coating of car bodies and bogies. The system has excellent anti-corrosion and decorative properties. The composite coating has more than 1,000 hours of artificial weathering resistance and can meet 1,000 hours of salt spray resistance (NSS). It has outstanding performance in all aspects. While depicting the appearance of subway vehicles in color, it can also provide long-lasting protection for the body and parts.
Among them, WSU900 water-based topcoat uses imported high-quality water-based resin as the main film-forming material, supplemented by water-based pigments. It is an environmentally friendly water-based coating newly developed by Zhongshan Bridge Chemical Group. It can replace traditional solvent-based polyurethane topcoats and has low VOC content. , Good film adhesion, high gloss, good weather resistance, fast surface drying, etc.; excellent film performance, can be used with water-based polyurethane intermediate coating and water-based polyurethane varnish, suitable for rail transit vehicles, large and medium-sized buses, construction machinery And other surface coating.
WSU600 water-based flash paint is an environmentally friendly water-based paint newly developed by Zhongshan Daqiao Chemical Group, which can replace traditional solvent-based flash paint. The paint is developed with imported raw materials and advanced technology. It has low VOC content, excellent paint film performance, convenient construction, and fast drying speed. It can be used for wet-on-wet (pre-baking) varnishing construction. Floral and metallic pigments have good alignment and strong metallic feeling. The two-component paint of this system is bright and plump after varnishing with varnish. Combined with the protection system composed of primer, putty and primer, it has excellent mechanical properties and excellent outdoor color and gloss stability.
In the test stage, in order to cooperate with the Beijing subway to achieve the target effect, Zhongshan Daqiao Chemical Group has paid great attention to it. In order to meet the performance requirements of the vehicle interior primer to achieve adhesion less than or equal to level 1 without polishing, the technical team of Zhongshan Daqiao Chemical Group selected from supporting raw materials Starting with the newly added WHA-60(T) primer curing agent, the target was perfectly reached within one month. In addition, in terms of appearance, the colors of the vehicles on Beijing Metro Line 3 are mainly black, red and white. Daqiao Chemical also It satisfies the numerical requirements of solid color paint color difference ≤ 1.0 and metallic paint color difference ≤ 1.5. The project will complete the overall painting in 2022. The exterior paint film of the car body is full in color, high in fullness, and strong in metal texture, which has been highly recognized by the Beijing Metro.
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