As the saying goes, people rely on clothes. For cars, the paint surface is equivalent to their own "clothes". Whether the color looks good and whether the paint surface is uniform has become one of the criteria for consumers to judge when buying cars. But some people always think that the thicker the car paint, the better. Actually, it is not the case.
(Source the Internet, delete if infringement)
may be that there are too many misleading voices on the Internet, such as the following brother dei:
(Source Baidu knows, delete if infringement)
The relevant content quoted in the original post is many different from "QC/T 484-1999 (Auto Paint Coating)". For example, the standard specification does not classify the specific selling price, nor does it directly convert paint hardness to pencil hardness. The hardness of pencil cores of 2-4H is very different from the industry.
At the same time, "QC/T 484-1999 (Automotive Paint Coating)" was implemented on 1999-3-15 and is not completely applicable to the present. Moreover, the beginning of "QC/T" indicates that the document is an industry-suggested standard, not a national standard document starting with "GB". In fact, there is no requirement for the thickness of the automobile coating in the national standard, and most of the paint film testing methods and evaluation standards are involved. With the continuous progress of automotive coating majors and the emergence and popularization of new processes, thickness is no longer the only standard for evaluating car paint workmanship. The key is to meet relevant technical requirements such as corrosion resistance and wear resistance.
(Source the Internet, delete if infringement)
Energy-saving and environmentally friendly. A brief discussion on mainstream automotive coating technology
Specifically, the car paint is divided into four layers, from the inside to the outside, which is the electrophoretic layer, the middle coating, the color paint layer and the varnish layer. The main function of the electrophoretic layer is to prevent rust from the steel plate of the car; the main function of the middle coating is to isolate ultraviolet rays and prevent the impact of sand and gravel; the colored paint layer is basically used to achieve the effect of coloring; the outermost layer is called the varnish layer, and its main function is to protect the paint layer.
At present, with the development of automotive coating technology, major auto companies not only generally use varnishing technology in the passenger car field, but also develop a variety of processes such as 3C2B, 3C1B, 4C3B, B1B2, color spraying, color change spraying, etc. To put it roughly, 3C2B is called "long process", and 3C1B and B1B2 are "short process". The short process becomes numerically thinner than the long process paint film, not only does the quality not decrease, but the optimization of the process flow greatly shortens production time and saves energy. At the same time, the B1B2 process reduces the emission of volatile organic matter that is harmful to the human body and the environment during the coating process, and is more energy-saving and environmentally friendly. Now, most mainstream car companies have begun to adopt short processes, which also represents the direction of future development.
(Source the Internet, delete if infringement)
will carry out "environmental protection" to the end, and zero-carbon factory helps sustainable development
Take the new smart elf #1 Pulse Heartbeat version that just launched, this car uses a variety of painting technologies, using the same B1B2 process as mainstream European car brands, and meets and exceeds the EU's requirements in terms of anti-corrosion standards, which are far higher than the recommended standards of the automobile industry. This means that if there is no damage to the paint, there will be no perforation corrosion or structural damage caused by corrosion in the corresponding body parts. With color cover, water-based NVH technology, etc., the body paint of smart Elf #1 is more beautiful and lasting. At the same time, the new smart elf #1 Pulse Heartbeat Edition offers 10 body colors, making the car's paint gloss, fullness of colors complement the avant-garde and beautiful tones.
At the same time, the B1B2 process is more in line with the concept of low-carbon and environmental protection. To carry out "environmental protection" to the end, the birthplace of smart elf #1 is the first certified zero-carbon vehicle factory in China, and it is also the only one in China, which means that its entire production process is more in line with the concept of sustainable development.
(source network, delete if infringement)
Among them, is on the production side, The zero-carbon vehicle factory achieves power carbon neutrality by building photovoltaic power stations + purchasing international green certificate I-REC models; is on the technical side, adopts equipment with high efficiency and low energy consumption, and monitors the economic operating parameters of the main equipment, actively explores technical energy-saving measures, make full use of waste heat and waste pressure, and improves energy efficiency; is on the management side, is established through the energy management system, combining technological transformation with management and energy conservation; is on the product side, improves energy use efficiency and continuously reduces carbon emissions during the use stage; is on the recycling side, explores material recycling, and promotes circular economy and carbon emission reduction at the material side.
(Source the Internet, delete if infringement)
To sum up, to determine whether the paint of a car is good or bad, you cannot make a conclusion based on the thickness alone. From a comprehensive perspective, smart not only does the body work very carefully, but also attaches importance to environmental protection and has a sense of social responsibility. If you like it, you can go to the store to see this urban elf called "beauty".
