Melting process of casting aluminum bar for aluminum profile

Abstract

The invention provides a melting process of a casting aluminum bar for aluminum profile. Aluminum raw materials are put into a smelting furnace, nitrogen is injected into the smelting furnace, and airin the smelting furnace is discharged; the aluminum raw materials are melted into molten aluminum liquid by using the smelting furnace, and the molten aluminum liquid is evenly vibrated and stirred by using ultrasonic waves; impurities on the surface of the molten aluminum liquid and impurities on the bottom layer of the molten aluminum liquid are separately discharged, and air in an aluminum barcasting device is discharged by using the heated nitrogen and the aluminum bar casting device is preheated; the molten aluminum liquid is extruded from bottom to top into an aluminum bar die tube ofthe aluminum bar casting device; redundant molten aluminum liquid is collected; an aluminum bar is formed by cooling the aluminum bar die tube and the molten aluminum liquid inside the aluminum bar die tube; an anti-oxidation coating is formed by spraying anti-oxidation coating on the surface of the aluminum bar; and the aluminum bar is taken out. According to the melting process of the casting aluminum bar for the aluminum profile, impurities are obviously decreased, the oxidation degree is reduced, and the quality of the aluminum bar and aluminum profile products is enhanced.

Description

technical field [0001] The invention relates to the field of aluminum rod melting and casting technology, in particular to a melting technology for melting and casting aluminum rods used for aluminum profiles. Background technique [0002] The melting and casting process of aluminum rods is well known. For example, the Chinese invention patent CN201310538784.9 discloses a melting and casting process of aluminum rods. The process includes the following steps: S1, preparing aluminum ingots and auxiliary materials, and sequentially adding them to the melting furnace; Smelting aluminum ingots and auxiliary materials at a temperature of 900°C to 970°C to obtain molten aluminum, the temperature of the molten aluminum is between 700°C to 760°C; S3, stirring and removing slag after the aluminum ingots are fully melted; S4 1. Refining by putting the refining agent into the duster and blowing in nitrogen gas. After refining, the temperature of the aluminum solution is between 730°C an...

AI Technical Summary

Problems solved by technology

[0003] This invention patent improves the efficiency of aluminum rod melting and casting, but the technical solution of this invention is similar to other aluminum rod melting and casting processes on the market. There are oxide layers formed inside and on the surface of the cast aluminum rod, because the oxide layer of the aluminum rod is relatively hard and difficult to Melting, when the aluminum rod is subsequently pressurized to process the aluminum profile, the oxide layer of the aluminum rod will increase the extrusion process requirements and affect the quality parameters of the aluminum profile such as purity, smoothness and strength as impurities