Compared with ordinary galvanized sheets,zinc-aluminum-magnesium products have many advantages such as good cor-rosion resistance,automatic repair of cuts and excellent ammonia resistance.Aiming at the difficulties in the design and selection of continuous zinc-aluminum-magnesium coating line using hot rolled substrate strip,the classification and application of zinc-alu-minum-magnesium coating products are introduced.Independent production line and continuous pickling & galvanizing line,gas heating and induction heating,vertical furnaces and horizontal furnaces are compared and analyzed respectively.At the same time,the selection of zinc pots,the design of post-galvanized strip cooling process and equipment,and the zinc ash defects and humidification problems in the furnace nose are technically introduced and selected,providing a reference for the design and selec-tion of similar lines.
hot rolled substrate stripzinc-aluminum-magnesium coatinghot-dip galvanizingdesign and selection
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