Granular flux used for aluminum alloy processing and preparation method thereof

A technology of aluminum alloy and particles, which is 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 the separation of slag and aluminum, and low cost of use

Active Publication Date: 2019-03-29
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 melting, in particular to a granular flux for aluminum alloy processing and a preparation method thereof. The flux takes sodium carbonate, calcium carbonate, sodium chloride, sodium sulfate and sodium fluosilicate as raw materials, and the prepared granular flux can be used for slag and aluminum separation on the surface during aluminum alloy processing, melting and casting. When in use, the granular flux generates a large amount of heat for heating a slag layer, the fluidity of slag is improved, and the separation of slag and aluminum is facilitated. A large number of experimental data shows that the consumption of the granular flux is 0.65-0.82 of that of a traditional flux when the granular flux and the traditional flux areused for removing the same amount of aluminum slag, the use cost is low, and the granular flux 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 Applications(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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