Hot Dip Galvanizing Of Steel Plate is widely used in light industry, household appliances, automobile and construction industries. For a long time, China’s galvanized sheet has been a short-term product. Over the years, the self-sufficiency rate of China’s Hot Dip Galvanizing Of Steel Plate is about 50%, which needs to be imported in large quantities every year. In recent years, the development and trends of strip galvanizing technology are mainly concentrated in three aspects: automotive plate, hot-dip galvanizing of hot-rolled strip and Hot Dip Galvanizing Of Steel Plate with high corrosion resistance. High surface quality is the basic condition of automobile panel. The surface quality of coating is directly related to the surface roughness, cleanliness, chemical composition of strip steel and its stamping formability. At the same time, hot plating process, liquid zinc composition and hot plating equipment are also important factors affecting the surface quality of zinc coating.
In modern production line, ceramic lined pot has been used to replace iron zinc pot, which can effectively reduce the influence of zinc slag on the surface quality of Hot Dip Galvanizing Of Steel Plate. In addition, the beautiful zinc flower is a typical feature of traditional Hot Dip Galvanizing Of Steel Plate, which is favored by users and has certain commercial value. However, the research shows that the uneven surface of zinc flower and the lead content in the coating will affect the processing performance, coating performance and corrosion resistance of the coated plate in subsequent processing. The size of zinc flower decreases with the decrease of lead content, and the cracking rate and corrosion rate are also greatly reduced. At present, the new galvanizing production lines adopt lead-free galvanizing process, and lead-free galvanizing has become the development trend of Hot Dip Galvanizing Of Steel Plate.Hot Dip Galvanizing Of Steel Plate is widely used in light industry, household appliances, automobile and construction industries. For a long time, China’s Hot Dip Galvanizing Of Steel Plate is widely used in light industry, household appliances, automobile and construction industries has been a short-term product. Over the years, the self-sufficiency rate of China’s Hot Dip Galvanizing Of Steel Plate is widely used in light industry, household appliances, automobile and construction industries is about 50%, which needs to be imported in large quantities every year. In recent years, the development and trends of strip galvanizing technology are mainly concentrated in three aspects: automotive plate, hot-dip galvanizing of hot-rolled strip and hot-dip galvanizing plate with high corrosion resistance. High surface quality is the basic condition of automobile panel. The surface quality of coating is directly related to the surface roughness, cleanliness, chemical composition of strip steel and its stamping formability. At the same time, hot plating process, liquid zinc composition and hot plating equipment are also important factors affecting the surface quality of zinc coating.
In modern production line, ceramic lined pot has been used to replace iron zinc pot, which can effectively reduce the influence of zinc slag on the surface quality of galvanized sheet. In addition, the beautiful zinc flower is a typical feature of traditional hot-dip galvanized sheet, which is favored by users and has certain commercial value. However, the research shows that the uneven surface of zinc flower and the lead content in the coating will affect the processing performance, coating performance and corrosion resistance of the coated plate in subsequent processing. The size of zinc flower decreases with the decrease of lead content, and the cracking rate and corrosion rate are also greatly reduced. At present, the new galvanizing production lines adopt lead-free galvanizing process, and lead-free galvanizing has become the development trend of hot-dip galvanizing.
Modern hot-dip galvanized steel strip is a kind of galvanized steel strip obtained by immersing cold-rolled steel strip or hot-rolled pickling steel strip into molten plating solution with zinc content of no less than 99% on continuous production line. Hot dip galvanized steel strip accounts for the vast majority of all kinds of hot-dip galvanized steel strip (plate). Ordinary zinc flower (also known as normal zinc flower, commonly known as large zinc flower) hot-dip galvanized steel strip (plate) is the basic variety of hot-dip galvanized steel strip (plate). It is a coated plate with obvious zinc flower shape formed by the free growth of zinc grains in the normal solidification process after hot-dip plating under the condition that the zinc solution contains antimony or lead. The surface of ordinary zinc flower board is a large and bright zinc flower with a scale of less than 10 cm, with a bright and beautiful appearance; The zinc layer has good adhesion. When the galvanized sheet is subjected to very complex deformation processing, the zinc layer will not fall off; Good heat reflection and can be used as heat insulation material; The surface gloss is maintained for a long time. Ordinary zinc flower board has a wide range of uses. It can be used as buckets, chimneys, various grain containers and kitchen utensils. It can be used as roofs, ceilings and walls in the construction industry, refrigerators, washing machines and showers in the household appliances industry, car, truck, trailer, luggage car and refrigerator parts in the automobile industry, garage door ‘water hanging device, etc, In other aspects, it can be used as equipment box cover, electrical cabinet, instrument panel, etc.
Zinc free Hot Dip Galvanizing Of Steel Plate is widely used in light industry, household appliances, automobile and construction industries is a new type of Hot Dip Galvanizing Of Steel Plate is widely used in light industry, household appliances, automobile and construction industries developed internationally after the 1980s. Ordinary Hot Dip Galvanizing Of Steel Plate is widely used in light industry, household appliances, automobile and construction industries with zinc flower is produced under the condition that the zinc liquid contains a small amount of antimony or lead. Antimony and lead are the elements that promote the growth of zinc flower. The antimony or lead is removed, so that the zinc solution contains neither antimony nor lead. After hot-dip galvanizing, due to the absence of factors promoting the growth of zinc flowers, the zinc flowers are not long, and the hot-dip galvanized steel strip without zinc flowers is produced. Zinc free patterned board is not only practical after painting and plastic coating, but also practical for bare. The surface of the non zinc flower board is extremely small but not obvious zinc flower, semi bright, the fluctuation of the coating surface is small, and the appearance is beautiful and pleasing to the eye; The corrosion resistance of zinc coating is good, which is about 20% higher than that of ordinary zinc flower zinc coating; When used for painting and plastic coating, the plate has the advantages of good coating coverage, strong coating adhesion, strong corrosion resistance after coating and long practical life; The coating has good adhesion. When the galvanized sheet is subjected to very complex deformation processing, the zinc layer will not fall off. The zinc free hot-dip galvanized steel strip can be used as an organic coating in the color plate industry to produce color drawing steel plates. It can be used as various dry goods containers on the roof and ceiling in the construction industry, as the material of vacuum cleaner in the household appliance industry, and as the material of other industries such as automobile industry. It is widely used.
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