What is the difference between the composition of automotive steel and ordinary steel?
Automotive steel is mainly composed of plates and special steels. It has the characteristics of high strength, thin specifications and corrosion resistance. It has a high level of production technology and is a high value-added product. Compared with ordinary steel such as construction steel, automotive steel is a high-added product. Value products are mainly reflected in the following aspects:
(1) High technical content. As the level of automotive products continues to improve, the requirements for automotive steel are also increasing. First of all, in order to reduce the weight of automobile products, save materials, reduce fuel consumption, reduce costs, and improve safety standards, high-strength and thin-gauge steel must be used. Secondly, in order to improve the anti-corrosion performance of automobile products and extend the service life of automobiles, it is necessary to improve the surface treatment technology of automobile interior and exterior panels, such as using galvanized sheets or alloy galvanized sheets.
(2) Advanced production equipment and high level of production technology. The production of automotive steel requires the use of advanced production equipment, so the investment scale is relatively large, and it generally takes about 5 years from investment and construction to completion and production to fully reach the design and production capacity. In terms of the production process, taking galvanized sheets for automobiles as an example, molten steel needs to be made into slabs first through slab continuous casting technology, and then galvanized sheets are produced through a complete set of production processes from slab hot rolling to cold rolling and coating. The production of ordinary steel only requires continuous casting technology to turn molten steel into billets, and then roll out steel for various uses. In addition, due to the high requirements on production technology. Therefore, there are also higher requirements on the level and structure of production personnel.
