The ABS board production process can be divided into upstream and downstream processes.
The upstream process refers to smelting, casting, hot rolling, cold rolling, etc., which are the same as those of other high-precision strips. The downstream process is much more complex than other high-precision strips and has many more processes. It can be abbreviated as: uncoiling - heat treatment, air cushion furnace (can be heated by fuel, electricity or electromagnetic induction) solution treatment (temperature 500~600 ℃) or annealing, water quenching/air quenching - surface treatment (cleaning and conversion treatment) - drawing Bending car - coating and lubricating - coiling, etc.
Heat treatment, conversion treatment and lubricant coating are key processes, and the production capacity of ABS strips depends on the throughput of these processes. In addition to the solid solution and annealing functions, the heat treatment process should also have the function of producing T4P (pre-aging) coils, which is a unique state for the production of heat-treatable reinforced ABS strips. The conversion treatment is chemical oxidation treatment in the fluorozirconium/titanic acid mixture to form a passivation film on the aluminum surface. The base chemical elements are titanium, zirconium, aluminum, oxygen and fluorine. The mass of the film is 1~4mg/ dm2, density 2.8g/cm3, thinner than the anodic oxide film, but much thicker than the natural oxide film, colorless or slightly blue, is a good base for adsorption and lubrication, and has good corrosion resistance, can be very good To protect the ABS strip from corrosion during the shelf life (6 months).
The lubricant can be dry or wet, sprayed or rolled, and then dried or cured. The lubricant film can provide good lubricating conditions for punching sheet metal parts and facilitate forming.
The downstream processing process of ABS strips can be built into a fully continuous production line, or can be built into two or three independent production lines. The maximum speed of the full continuous production line should not exceed 150m/min, and the production capacity is about 120kt/a.
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