In automotive manufacturing, in addition to galvanized steel passivator, what are the environmentally friendly surface treatment technologies?
In automotive manufacturing, in addition to galvanized steel passivator, what are the environmentally friendly surface treatment technologies?
In automotive manufacturing, in addition to galvanized steel passivators, there are a variety of environmentally friendly surface treatment technologies that are committed to reducing pollutant emissions, improving the efficiency of material utilization, and ensuring the quality and performance of the final product. Here are some examples of environmentally friendly surface treatment technologies:
1. ** Chromium-free passivation technology ** : Use chromium-free passivation agents instead of traditional chromate passivation agents to reduce the emission of harmful substances such as hexavalent chromium, such as molybdate passivation, rare earth metal passivation, tannic acid passivation, etc.
2. ** Ultraviolet (UV) curing coating ** : Used in the coating process of automotive interior parts and lamps, through ultraviolet irradiation to cure the coating, low VOCs content, can reduce more than 80% of VOCs production.
3. ** Powder coating alternative technology ** : Suitable for parts coating process, does not contain organic solvents, the powder that is not sprayed on the workpiece can be recycled, the VOCs content is less than 1%, which can reduce the VOCs production by more than 95%.
4. ** Low VOCs cavity protection wax ** : Used for the cavity protection process of passenger cars, trucks and cab painting processes, VOCs content is less than 10%, can replace solvent-based protection wax, greatly reducing the production of VOCs.
5. ** Natural gas fuel alternative technology ** : The use of natural gas to replace coal and fuel oil in the air-conditioning supply system of the painting workshop, the painting drying room and the heating device of the VOCs treatment technology of the combustion method can reduce the generation of pollutants such as particles and SO2.
6. ** cold test technology ** : Suitable for steam and diesel engine factory testing test, the use of compressed air or electric energy instead of fuel, gas driven engine testing, to avoid waste gas pollutants caused by fuel combustion.
7. ** Spraying system optimization technology ** : Through the optimal combination of spraying coating, spraying technology and film forming process, reduce investment, save energy, reduce VOCs production and improve production efficiency.
8. ** cathode electrophoresis technology ** : Suitable for complex structure of body welding parts and rivet welding parts of the primer construction, VOCs production is low, high production efficiency, paint adhesion rate is generally 97%~99%.
9. ** Automatic spraying technology and electrostatic spraying technology ** : improve the stability of spraying speed and coating uniformity, reduce the amount of paint and the total amount of VOCs produced, and reduce the amount of waste paint produced by centralized painting process
10. ** Nickel-free, chromium-free conversion film treatment technology ** : including nickel-free phosphating technology, chromium-free passivation technology, does not produce total nickel, hexavalent chromium and total chromium and other pollutants, reduce the production of hazardous waste.
The application of these technologies helps the automotive industry to achieve a more environmentally friendly production process, while ensuring product quality and performance. With the increasingly strict environmental regulations and the improvement of public awareness of environmental protection, these environmentally friendly surface treatment technologies will be more and more widely used in automobile manufacturing.
