Ventilating air-eliminating refining method of 3104 aluminum alloy flat ingot in casting furnace

A casting furnace and aluminum alloy technology, which is applied in the field of smelting degassing and slag removal, can solve the problems of long blowing time, high labor intensity, and many casting defects, and achieve the goals of reducing the formation of residues, increasing labor intensity, and reducing labor intensity Effect

Active Publication Date: 2007-09-19
GUIZHOU BRANCH CHINA ALUMINUM IND
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Problems solved by technology

Long blowing time, large burning loss of alloy elements, poor degassing and slag removal effects, high labor intensity, low product quality, product yield is only about 60%, many casting defects, and the flat ingot has a large tendency to crack, which is not conducive to large batches Automated manufacturing

Method used

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  • Ventilating air-eliminating refining method of 3104 aluminum alloy flat ingot in casting furnace

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Embodiment 1

[0016] The method for refining 3104 aluminum alloy flat ingot casting furnace by ventilation, degassing and slag removal comprises a tiltable holding furnace 8, 13 ventilation bricks built on the furnace bottom refractory material structure 9, and 13 ventilation pipes are arranged at the furnace bottom Road 10 constitutes, and the distribution of the 13 ventilation bricks at the bottom of the tilting holding furnace 8 is shown in Figure 1, which is divided into 3 rows and distributed in a staggered manner; the 13 ventilation pipes at the outlet of the gas flow control cabinet 7 have 10 ends Parts are respectively provided with manual regulating valves 13; the described refining method of ventilating degassing and slag removal is through the ventilation pipeline 10 provided under 13 ventilating bricks 9 at the bottom of the furnace, which is controlled by the SIEMENS PLC system through the gas flow control cabinet 7 to the holding furnace 8 Nitrogen was passed through for degass...

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Abstract

The invention relates to a method for degassing and deslag in smelting, more specially, to to a refining method of venting, degassing and deslag in 3104 aluminium alloy flat section ingot casting furnace. The refining method of venting, degassing and deslag in 3104 aluminium alloy flat section ingot casting furnace includes kettle furnace, thirteen air bricks built on the fireproofing structure of the furnace bottom, 13 venting pipelines mounted on the furnace bottom, the said refining method for venting, degassing and deslag is that inert gas or inert mixing gas enters into maintaining furnace through the venting pipelines mounted on the bottom of thirteen air bricks, the inert gas adsorbs the impurity in aluminium liquid and then floats with air bubble up to the surface of aluminium liquid and exhausts to obtain the product. The advantage of the invention is: improving the degassing and deslag efficiency; improving the product quality of aluminium alloy flat section ingot; reducing the defect for casting flat section ingot; shortening the cost for producing flat section ingot, improving the productivity and reducing the flow of gas. The invention is usable for aluminium and aluminium alloy casting industry.

Description

technical field [0001] The invention relates to a smelting degassing and slag removal method, in particular to a 3104 aluminum alloy flat ingot casting furnace ventilation degassing and slag refining method. Background technique [0002] In the production process of aluminum alloy ingots in the electrolytic aluminum plant, due to the large inclusions of the furnace charge and electrolytic primary aluminum, and the gas absorbed by the aluminum liquid during the transfer, smelting, and pouring process, the purity of the alloy liquid is reduced and the fluidity is deteriorated. It will cause a variety of casting defects in castings (ingots), mainly manifested as large inclusions, diffuse inclusions, subcutaneous pores and pores at the concentrated riser inside the ingot, which affects the mechanical and processing properties of the ingot, as well as corrosion resistance. Airtight performance, anodic oxidation performance and appearance quality. In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06B22D11/117
Inventor 郭峰孙继陶张新奎龚海军董江刘兴安
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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