November 7, 2022
The characteristics of galvanized sheet: galvanized can effectively prevent steel corrosion, prolong the service life. Galvanized thin steel plate (thickness is 0.4~1.2mm), also known as galvanized iron sheet, commonly known as white sheet.
Galvanized sheet is widely used in construction, vehicles, household appliances, daily necessities and other industries. Hot-dip galvanized strip steel is always in shortage in our country. Since the mid-1990s, about 800,000 to 1 million tons have been imported from abroad every year. With the development of the domestic economy, especially the development of automobiles, home appliances and construction industry, the demand for galvanized strip steel has increased greatly. In the recent 20 years, our country has built a batch of production lines with an annual output of more than 100,000 t, but from the process, equipment composition to the product varieties belong to low level of traditional technology of hot-dip galvanizing units, in the variety quality and quantity can not meet the needs of our country's economic construction development, still need to build new hot-dip galvanizing line to meet the market needs.
Our country's existing hot-dip galvanizing units and foreign level have the main differences in most units do not have pre-cleaning equipment, which are difficult to guarantee the quality of galvanizing surface. The existing polishing machines are relatively simple two-roll polishing machines (four rolls for Panjiang), which can not improve the mechanical properties of strip steel, especially the deep drawing properties. The existing varieties are single galvanized sheet, only a small amount of alloyed plate, far from meeting the needs of the market.
Hot galvanized sheets produced by Chinese manufacturers are the main users of building materials, light industry, agriculture, transportation and so on. Due to the limitations of the existing hot-dip galvanizing equipment, process technology and the performance of the original sheet, the actual production of galvanized sheet for automobile manufacturing is very few.
