After welding, the whole aluminum barrier will be galvanized, so that the surface has a zinc layer, so as to achieve anti-rust effect. Galvanizing is divided into hot dip galvanizing, cold galvanizing, and mechanical zinc plating.
1. Hot dip galvanizing
Hot-dip galvanizing is to immerse the rust-removing steel into the molten zinc solution at about 500 C, so that zinc layer is attached to the surface of the aluminum guardrail, so as to prevent corrosion. The production process of hot-dip galvanized sheet mainly includes preparation of original sheet, pretreatment before plating, hot-dip plating, post-plating and inspection of finished products.
Two. Cold galvanizing
Cold galvanizing, also known as galvanizing, is the use of electrolytic equipment after oil removal, pickling, and then into the composition of zinc salt solution, and connected to the electrolytic equipment of the negative electrode, placed in the opposite of the tube zinc plate, connected to the electrolytic equipment on the positive electrode power supply, the use of electric current from the positive electrode to the negative electrode of the directional movement will sink on the tube. A layer of zinc is deposited, and the aluminum fence is first processed and galvanized.
Three. Mechanical zinc plating
Mechanical zinc plating in a rotating drum with plating parts, glass balls, zinc powder, water and accelerators, as the impact medium of glass balls rotating with the drum, friction and hammering with the surface of aluminum barrier to produce mechanical and physical energy, in the role of chemical accelerators, the coating of zinc powder "cold welding" to the surface of the plating, forming Smooth, uniform and meticulous coating with a certain thickness.
标签:   铝艺大门 铝艺护栏 镇江铝艺大门