Production technology of 6-series alloy bar for anodic oxidation

Abstract

The invention relates to a production technology of a 6-series alloy bar for anodic oxidation. The production technology of the 6-series alloy bar for anodic oxidation includes the following steps that (1) mixing is performed; (2) refining is performed; (3) blowing is performed, specifically, after blowing is performed on an alloy aluminum liquid, the liquid is left to stand at 730-750 DEG C; (4)online degassing is performed; (5) double filtration is performed; and (6) casting is performed, specifically, cooling water casting is performed after the alloy aluminum liquid passes through an oil-gas slip casting flow table. According to the production technology of the 6-series alloy bar for anodic oxidation, an advanced oil-gas slip casting production line in China at present is used as a core, the industrial pure aluminum liquid with the purity being 99.85% is used, methods of semi-continuous casting, in-furnace homogenization treatment and double-filtering equipment are adopted, the 6-series aluminum alloy bar product for anodic oxidation can be prepared finally, grain distribution in a cast bar is uniform, the content of aluminum alloy slag is low through high-magnification structure inspection, and segregation tumors, cold shut and other phenomena do not exist on the surface of the alloy bar.

Description

Technical field[0001]The invention belongs to the technical field of aluminum alloys, and specifically relates to a production process of a 6-series alloy rod for anodizing.Background technique[0002]Anodizing refers to a method in which a metal is used as an anode in an appropriate electrolyte and an oxide film is formed on the surface under the action of an external current. Aluminum alloy for anodic oxidation is an aluminum-based material that is rolled or extruded into a foil after pretreatment, and then undergoes anodization, sealing, coloring (or using the natural color of aluminum to obtain a matte effect) and other processes to become a decoration or shell Such materials are widely used in automotive decoration materials, 3C electronic housings and furniture. At present, domestic high-end automotive decoration materials mainly rely on imports, and there are no mature production technologies and suppliers in China.[0003]At present, the biggest production problem of aluminum al...

AI Technical Summary

Problems solved by technology

The main reason for many defects is that the aluminum melt contains a lot of slag and high gas content during the melting of ingredients, which leads to defects such as black lines and white lines in the subsequent extrusion or rolling process

Second, more effective furnace refining and purification processes outside the furnace are required, especially the technology of filtering and slag removal outside the furnace. The cost of equipment purchase and maintenance is relatively high, but the removal effect on small-sized inclusions is limited.

Third, the qualified rate of finished products is low

However, the on-line equipment of this technical solution is a single-rotor on-line and a ceramic foam filter plate, and the degassing and slag removal capacity is limited

[0007] In view of this, the present invention proposes a new production process of 6-series alloy rods for anodic oxidation, which can solve the problem of poor surface quality of 6-series alloy rods, and can also solve the problems of internal structure uniformity and slag content

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