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Sodium-free refining agent for smelting aluminum alloy and preparation method thereof

A sodium-free refining agent, aluminum alloy technology, applied in the field of aluminum alloy casting, to achieve good refining effect

Inactive Publication Date: 2018-03-09
徐州轩辕铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the refining agents disclosed in my country generally contain one or more of sodium salts such as sodium chloride, sodium fluoroaluminate, sodium fluoride, sodium fluorosilicate, and sodium sulfate. Sodium is introduced into aluminum-magnesium, aluminum-copper, and aluminum-lithium alloys, resulting in the phenomenon of "sodium embrittlement"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A sodium-free refining agent for aluminum alloy smelting and a preparation method thereof, the refining agent is prepared from the following raw materials in mass fractions:

[0015] Potassium fluosilicate 15 parts, potassium chloride 8 parts, aluminum fluoride 10 parts, magnesium chloride 8 parts, calcium fluoride 12 parts, potassium fluotitanate 18 parts, potassium fluoborate 10 parts, titanium dioxide 6 parts, potassium nitrate 4 parts , 3 copies of toner.

[0016] The preparation method is as follows:

[0017] (1) Fully mix and stir each component of the formula amount, carry out pulverization, and pass through a sieve of 80 mesh;

[0018] (2) Put the mixture obtained in step (1) into a crucible, heat and melt to remove crystal water, the heating temperature is 80° C., the heating time is 2 hours, and then the heat preservation is carried out for 50 minutes;

[0019] (3) cooling the product obtained in step (2) to 40° C., and the obtained granular mixture is the r...

Embodiment 2

[0021] A sodium-free refining agent for aluminum alloy smelting and a preparation method thereof, the refining agent is prepared from the following raw materials in mass fractions:

[0022] Potassium fluosilicate 20 parts, potassium chloride 12 parts, aluminum fluoride 16 parts, magnesium chloride 14 parts, calcium fluoride 18 parts, potassium fluotitanate 24 parts, potassium fluoborate 14 parts, titanium dioxide 10 parts, potassium nitrate 10 parts , 5 parts of carbon powder.

[0023] The preparation method is as follows:

[0024] (1) Fully mix and stir each component of the formula amount, carry out pulverization, and pass through a 100-mesh sieve;

[0025] (2) put the mixture obtained in step (1) into a crucible, heat and melt to remove crystal water, the heating temperature is 100°C, add

[0026] The heat time is 2.5 hours, and then keep warm for 60 minutes;

[0027] (3) cooling the product obtained in step (2) to 45°C, and the obtained granular mixture is the refining ...

Embodiment 3

[0030] A sodium-free refining agent for aluminum alloy smelting and a preparation method thereof, the refining agent is prepared from the following raw materials in mass fractions:

[0031] Potassium fluosilicate 18 parts, potassium chloride 10 parts, aluminum fluoride 13 parts, magnesium chloride 11 parts, calcium fluoride 15 parts, potassium fluotitanate 21 parts, potassium fluoborate 12 parts, titanium dioxide 8 parts, potassium nitrate 7 parts , 4 copies of toner.

[0032] The preparation method is as follows:

[0033] (1) Fully mix and stir each component of the formula amount, carry out pulverization, and pass through a 100-mesh sieve;

[0034] (2) put the mixture obtained in step (1) into a crucible, heat and melt to remove crystal water, the heating temperature is 100°C, add

[0035] The heat time is 2 hours, and then keep warm for 50 minutes;

[0036] (3) cooling the product obtained in step (2) to 40°C, and the obtained granular mixture is the refining agent;

[...

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PUM

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Abstract

The invention discloses a sodium-free refining agent for aluminum alloy smelting and a preparation method thereof. The refining agent is prepared from the following raw materials in parts by weight: 15-20 parts of potassium fluorosilicate, 8-12 parts of potassium chloride, 10‑16 parts of aluminum fluoride, 8‑14 parts of magnesium chloride, 12‑18 parts of calcium fluoride, 18‑24 parts of potassium fluotitanate, 10‑14 parts of potassium fluoborate, 6‑10 parts of titanium dioxide, 4‑10 parts of potassium nitrate parts, 3‑5 parts of toner. The preparation method is as follows: (1) fully mix and stir each component of the formula amount, carry out crushing treatment, and pass through a sieve of 80-100 mesh, (2) put the mixture obtained in step (1) into a crucible, heat and melt to remove crystal water , the heating temperature is 80-100°C, the heating time is 2-2.5 hours, and then kept for 50-60 minutes, (3) the product obtained in step (2) is cooled to 40-45°C, and the obtained granular mixture It is the refining agent, and (4) is packed in a waterproof plastic bag. The refining agent of the invention can serve the refining purpose of removing slag and degassing, does not contain sodium salt components, and has good refining effect.

Description

technical field [0001] The invention relates to a sodium-free refining agent for aluminum alloy smelting and a preparation method thereof, belonging to the technical field of aluminum alloy casting. 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. During the production of aluminum alloy, the hydrogen atoms in the solution will spontaneously form hydrogen gas, and the hydrogen gas and inclusions will form bubbles during the solidification of the aluminum alloy solution, causing defects in the aluminum alloy components. At present, the refining agents disclosed in my country generally contain one or more of sodium salts such as sodium chloride, sodium fluoroaluminate, sodium fluoride, sodium fluorosilicate, and sodium sulfate. Sodium is introduced into aluminum-magnesium, aluminum-copper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/02C22C21/00
CPCC22C1/06C22C1/026C22C21/00
Inventor 魏道金
Owner 徐州轩辕铝业有限公司
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