The necessity of surface treatment of auto parts
From the perspective of external factors, the increase in consumer demand for automotive performance is a driving factor that promotes surface treatment of automotive parts. The characteristics of the auto parts themselves, such as corrosion and moisture, have also determined that surface treatment must be carried out to improve the overall performance of the car to better meet the consumer needs of consumers.
Main process technology of surface treatment of auto parts
Surface treatment is a process of artificially forming a surface layer on the surface of the substrate material that is different from the mechanical, physical and chemical properties of the substrate. The purpose of surface treatment is to meet the product’s corrosion resistance, wear resistance, decoration or other special functional requirements.
The surface treatment of auto parts refers to an industrial activity that performs corrosion resistance, wear resistance and decoration treatments on a large number of metal parts and a small amount of plastic parts to improve their performance and aesthetics, so as to meet the requirements of users. .
With the continuous improvement of surface treatment technology, the surface treatment methods of auto parts are also continuously enriched. At present, there are mainly five ways. They are electrochemical treatment, painting, chemical treatment, heat treatment and vacuum method.
Technology development trend of auto parts surface treatment industry
(1) The application of anodizing technology will become more and more extensive
Due to the technical difficulties in the application of aluminum alloy materials in terms of stamping ductility, connectivity and corrosion resistance, the material cost is also high, and most of them are currently used in high-end cars. The mainstream domestic automobile bodies basically use cold-rolled steel plates and galvanized steel. Steel plate. With the continuous improvement of body weight requirements, the proportion of aluminum alloy used in automobile bodies will increase year by year, and the technical difficulties in the application of aluminum alloy materials are constantly being studied and resolved. The anodic oxidation process is adopted to improve the adhesive connection and corrosion resistance of aluminum alloy parts. With the development of the application of aluminum alloy, which is a lightweight material for automobiles, the application of this process in the field of automobile body will become more and more extensive.
(2) Environmental protection of spraying technology
The pressure of environmental protection urges auto parts spraying to produce products/technologies that are adapted to the environment, pollute the environment or have low pollution, regardless of whether it is technically or in the use of materials. Such as the use of spray-free materials to avoid damage to the environment; the use of environmentally friendly spray polyurethane materials, etc. With the continuous escalation of environmental protection pressure, auto parts spraying practitioners will continue to introduce more environmentally friendly, higher-level spray materials and technologies.