Influence of automobile parts on painting process of automob

Introduction:

With the rapid development of science and technology and the continuous improvement of consumers' requirements for automobile quality, automobile manufacturing industry is also constantly pursuing more advanced production technology to meet market demand. Among them, painting, as one of the important links in the automobile manufacturing process, plays a key role in improving the appearance quality and corrosion resistance of products. The quality and treatment of auto parts are directly related to the overall performance of the final finished car.

First, the influence of automobile parts on painting quality

1. Surface pretreatment: Good surface pretreatment is the basis of ensuring coating adhesion. If there is oil stain, rust or residue on the surface of parts, it will affect the bonding effect of primer, leading to quality problems such as coating peeling and blistering.

2. Material selection: Parts with different materials need to adopt different pretreatment methods and matching coating systems. For example, metal parts are usually chemically transformed with phosphating solution; Plastic parts need to be treated by flame or corona discharge to improve their surface energy and enhance the bonding force with paint.

3. Structural design: parts with complex structures are prone to form dead zones, which are difficult to be thoroughly cleaned and poorly ventilated, and are prone to accumulate moisture and cause corrosion problems. In addition, too compact design will also increase the difficulty of construction, reduce work efficiency and may cause local problems of too thick or too thin.

Second, the problems that should be paid attention to in the process of painting

-Temperature control: Suitable working temperature can ensure good leveling and fast drying speed of coatings, and help to improve hiding power and flatness.

-Humidity management: excessive humidity will lead to prolonged wet film time and even water spots; If the humidity is too low, the solvent will evaporate too quickly, resulting in orange peel defects.

-Construction parameter setting: factors such as distance and angle of spray gun and spraying speed will affect the uniformity of coating thickness distribution and surface gloss.

III. Conclusion

To sum up, from material selection to specific operation steps, every detail will affect the color brightness, weather resistance and scratch resistance of the final product. Therefore, in order to achieve the best painting effect, we must strictly control each process, at the same time strengthen technological innovation and constantly optimize the existing production technology, so as to effectively enhance the competitiveness of our own brand cars in the global market.