The Development Situation Of High-grade Hot Galvanized Sheet For Automobile At Home And Abroad

Automotive industry products have the requirements of high efficiency, high reliability and high integration, and automotive hot-dip galvanized steel plate is the best and best galvanized steel plate. Since the United States first applied the hot galvanized sheet to the automobile industry in 1975, more than 20 years, the world's major automobile producers are working hard to develop and develop high-quality hot galvanized sheets to prevent corrosion, and consider weldability, coating and formability, and have made a series of technological progress, including the chemical composition of the steel matrix, the rolling quality of the steel plate surface, and the quality of the steel plate surface. A series of technical problems such as thickness uniformity of hot dip galvanizing coating, optimal structure of alloying and process control are discussed. After 20 years of research, the above technical problems and the process equipment to complete the technical requirements have been basically solved and began to be widely used in automobiles, the successful application of these technologies can greatly improve the working state of automobiles, extend life and save energy.