car automatic painting line
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China Coating Line Equipment Manufacturer
In the global manufacturing industry, Chinese coating line equipment manufacturers have become a force that cannot be ignored. With technological innovation, quality control and cost advantages, Chinese companies have occupied an important position in the international market. I will explore the current situation, advantages, challenges and future development trends of Chinese coating line equipment manufacturers from multiple perspectives.
The principle and characteristics of the spraying method of the inner surface of the car body
At present, the interior surface spraying of automobiles mainly includes three methods: artificial air spray gun spraying, artificial electrostatic (air) spray gun spraying, and robot rotary cup spraying. When the traditional air spray gun sprays the inner surface of the car body, the paint transfer efficiency is only 25%~35%. The large amount of atomized paint is only a small amount attached to the surface of the car body, and most of the rest becomes overspray mist and is pressed into the paint by the air exhaust system. Paint slag in the mist capture system causes a lot of waste and VOC emissions. Moreover, a lot of chemicals (such as flocculants and flocculants) are required to treat these paint mists. The formed paint slag needs to be processed at a cost. The environment also has a big impact.
During the debugging of the automobile coating production line, the roughness of the electrophoretic paint film on the engine hood, rear door and other parts of the two models produced by the new production line was measured to be relatively high (Ra=2.5> 0.30 μm). Most of the vertical surface and ceiling roughness such as four doors can meet the standard requirements. The electrophoresis roughness of the hood, fenders, roof and other parts of the body of another model is unstable.
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