Continuous zinc-coated aluminum production system and process capable of regulating strength of strip steel by utilizing zinc aluminum pool
A technology of production system and production process, which is applied in the field of metallurgy, can solve problems such as difficult control of annealing temperature range, surface quality and single strength of galvanized aluminum steel sheet, etc., and achieve the effect of improving the ability to adapt to the market, reducing yield strength and reducing cost
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Embodiment 1
[0037] See attached figure 1 As shown, a continuous galvanized aluminum production system that uses a zinc-aluminum pool to adjust the strength of the strip includes:
[0038] Pre-processing system, used for uncoiling, straightening and welding of strip steel;
[0039] The front buffer device 5 is used to delay the operation of the pre-treated strip;
[0040] An annealing device 7 is used to reduce the oxide scale on the surface of the steel strip to a spongy pure iron and keep it warm; the inside of the annealing device is sequentially provided with a NOF furnace 7a, a reduction furnace 7b and a cooling furnace 7c;
[0041] The zinc-aluminum pot 9 is a device used to complete the incomplete annealing of the strip steel during the transmission process; the strip speed of the strip steel is 80-150m / min, and the temperature of the molten pool in the zinc-aluminum pot 9 is 550°C-580°C ℃.
[0042] The pre-processing system includes an uncoiling device 1, a front shearing machin...
Embodiment 2
[0053] The continuous galvanized aluminum production process that uses the zinc-aluminum pool to adjust the strength of the strip steel. The process flow: the strip steel is made of ordinary low-carbon steel, and the thickness of the strip steel is 0.28mm. The strip steel passes through the uncoiling device 1, the front shearing machine 3, and the welding machine 4 After uncoiling, straightening, and welding, it enters the annealing device 7 through the front buffer device 5. In the annealing device 7, it first passes through the NOF furnace 7a to remove the surface grease, and is preheated to 150°C, then enters the reduction furnace 7b, and in the reduction heating section The temperature rises to 550°C, and the soaking temperature is maintained at 550°C to reduce the oxide scale on the surface to spongy pure iron. Then, the cooling furnace 7c starts the electric heating device to maintain the temperature required by the process, and then enters the zinc-aluminum pot 9, zinc T...
Embodiment 3
[0055] The continuous galvanized aluminum production process using the zinc-aluminum pool to adjust the strength of the strip steel, the process flow: the strip steel is made of ordinary low-carbon steel, the thickness of the strip steel is 0.25mm, and the strip steel passes through the uncoiling device 1, the front shearing machine 3, and the welding machine 4 After uncoiling, straightening, and welding, it enters the annealing device 7 through the front buffer device 5. In the annealing device 7, it first passes through the NOF furnace 7a to remove the surface grease, and is preheated to 150°C, then enters the reduction furnace 7b, and in the reduction heating section The temperature rises to 550°C, and the soaking temperature is maintained at 550°C to reduce the oxide scale on the surface to spongy pure iron. Then, the cooling furnace 7c starts the electric heating device to maintain the temperature required by the process, and then enters the zinc-aluminum pot 9, zinc The m...
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