A kind of granular flux for aluminum alloy processing and preparation method thereof

An aluminum alloy and particle technology, applied in the field of aluminum alloy smelting, can solve the problems of serious pollution and large amount of flux, and achieve the effects of improving fluidity, helping slag and aluminum separation, and low cost of use

Active Publication Date: 2021-06-29
中山华钰有色冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Traditional fluxes are used in large quantities when removing oxides, hydrogen and slag inclusions, resulting in serious pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A granular flux for aluminum alloy processing, its composition: 5% sodium carbonate, 10% calcium carbonate, 40% sodium chloride, 29% sodium sulfate and 15% sodium fluorosilicate.

[0025] Preferably, a granular flux for aluminum alloy processing, the preparation method thereof comprises the following steps:

[0026] a. Put the raw materials in a drying mixer for drying and fully mixing, the water content of the mixed raw materials is less than 0.25%, and the raw materials are mixed;

[0027] b. Place the mixed raw material in step a in a roller compactor for extrusion, then place it in a scraper crusher for crushing to obtain granules; c, place the granules in step b in a sieving machine For screening, the screening machine is divided into double-layer screens, the mesh size of the upper screen is 3.15mm, and the screen hole size of the lower screen is 0.83mm. The particles above the lower layer of the screening machine are qualified product particles, and the density o...

Embodiment 2

[0030] A particle flux for aluminum alloy processing, its composition: 6% sodium carbonate, 8% calcium carbonate, 45% sodium chloride, 29% sodium sulfate and 16% sodium fluorosilicate.

[0031] Preferably, a granular flux for aluminum alloy processing, the preparation method thereof comprises the following steps:

[0032] a. Put the raw materials in a drying mixer for drying and fully mixing, the water content of the mixed raw materials is less than 0.25%, and the raw materials are mixed;

[0033] b. Place the mixed raw material in step a in a roller compactor for extrusion, then place it in a scraper crusher for crushing to obtain granules; c, place the granules in step b in a sieving machine For screening, the screening machine is divided into double-layer screens, the mesh size of the upper screen is 3.15mm, and the screen hole size of the lower screen is 0.83mm. The particles above the lower layer of the screening machine are qualified product particles, and the density of...

Embodiment 3

[0036] A granular flux for aluminum alloy processing, its composition: 7% sodium carbonate, 6% calcium carbonate, 44% sodium chloride, 26% sodium sulfate and 17% sodium fluorosilicate.

[0037] Preferably, a granular flux for aluminum alloy processing, the preparation method thereof comprises the following steps:

[0038] a. Put the raw materials in a drying mixer for drying and fully mixing, the water content of the mixed raw materials is less than 0.25%, and the raw materials are mixed;

[0039]b. Place the mixed raw material in step a in a roller compactor for extrusion, then place it in a scraper crusher for crushing to obtain granules; c, place the granules in step b in a sieving machine For screening, the screening machine is divided into double-layer screens, the mesh size of the upper screen is 3.15mm, and the screen hole size of the lower screen is 0.83mm. The particles above the lower layer of the screening machine are qualified product particles, and the density of ...

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Abstract

The invention relates to the technical field of aluminum alloy smelting, in particular to a granular flux for processing aluminum alloys and a preparation method thereof; the present invention uses sodium carbonate, calcium carbonate, sodium chloride, sodium sulfate and sodium fluorosilicate as the preparation granular flux The prepared granular flux can be used for the separation of surface slag and aluminum in the process of aluminum alloy processing, smelting and casting. The granular flux generates a large amount of heat when used to heat up the slag layer, improving the fluidity of slag and helping the separation of slag and aluminum; The invention shows through a large number of experimental data that, to remove the same amount of aluminum slag, the usage amount of the granular flux of the present invention is 0.65-0.82 of the traditional flux usage amount, the usage cost is low, and it is more conducive to environmental protection.

Description

Technical field [0001] The invention relates to the technical field of aluminum alloy smelting, in particular to a granular flux used for aluminum alloy processing and a preparation method thereof. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of industrial economy, the demand for welded structural parts of aluminum alloy is increasing day by day, so that the research on weldability of aluminum alloy is also in-depth. Aluminum alloy is currently the most widely used alloy. [0003] Aluminum alloy has low density, but relatively high strength, which is close to or exceeds high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C1/02C22C21/00
CPCC22C1/026C22C1/06C22C21/00
Inventor 朱红萍
Owner 中山华钰有色冶金材料有限公司
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