Sodium-free smokeless aluminum alloy environment-friendly refining agent and manufacturing method thereof

A refining agent and aluminum alloy technology, applied in the field of aluminum alloy smelting, can solve the problems of hindering the growth of solid phase grains, pollution, and short effective time of deterioration treatment, and achieve the effect of simple formula and method

Inactive Publication Date: 2018-06-08
谢石华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical properties of products produced by this process are low, and the refining effect is poor or pollution is generated, and the effective time of deterioration treatment is short, especially for the mass production time of metal molds or small castings.
Most of the refining agents in the prior art have complex components (the more complex the components, the worse the reliability and the lower the controllability), and the applicant has been engaged in the technology for many years, and believes that the existing technology includes the refining of new patented technology There are two common defects in the refining agent: the first is that the refining agent contains sodium or even contains fluorine and sodium at the same time. As we all know, sodium will obviously increase the brittleness and elongation of aluminum alloy, and even easily cause Hot cracking; at the same time, many technical data show that when sodium and fluorine exist in the aluminum alloy smelting environment, it is easy to form a hard substance with a high melting point Na 3 AlF 6 , which is a substance with a melting point of 1009°C (much higher than the conventional technology of aluminum alloy smelting which

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A sodium-free and smoke-free aluminum alloy environmental protection refining agent, its ingredients include magnesium chloride 4.0Kg, potassium chloride 2.9Kg, aluminum fluoride 3.1Kg, the aluminum alloy environmental protection refining agent is obtained by melting all the above-mentioned ingredients mechanically and uniformly at 750°C .

[0017] The manufacturing method of the above-mentioned sodium-free smoke-free aluminum alloy environment-friendly refining agent comprises the following steps:

[0018] 1) Preparation before production

[0019] ① Raw material preparation for refining agent: prepare 4.0Kg of magnesium chloride, 2.9Kg of potassium chloride, and 3.1Kg of aluminum fluoride;

[0020] 2) melting

[0021] ① Mix the raw materials obtained in step ① in 1) evenly to obtain the mixed raw materials;

[0022] ② Place the mixed raw material obtained in step ① in a vacuum eddy current induction heat treatment furnace, place martensitic stainless steel slag of 1...

Embodiment 2

[0026] A sodium-free and smoke-free aluminum alloy environmental protection refining agent, its ingredients include magnesium chloride 4.9Kg, potassium chloride 2.1Kg, aluminum fluoride 3.0Kg, the aluminum alloy environmental protection refining agent is obtained by melting all the above ingredients mechanically and uniformly at 780 °C .

[0027] The manufacturing method of the above-mentioned sodium-free smoke-free aluminum alloy environment-friendly refining agent comprises the following steps:

[0028] 1) Preparation before production

[0029] ① Preparation of raw materials for refining agent: prepare 4.9Kg of magnesium chloride, 2.1Kg of potassium chloride, and 3.0Kg of aluminum fluoride;

[0030] 2) melting

[0031] ① Mix the raw materials obtained in step ① in 1) evenly to obtain the mixed raw materials;

[0032] ② Place the mixed raw material obtained in step ① in a vacuum eddy current induction heat treatment furnace, place martensitic stainless steel slag of 1 / 2 th...

Embodiment 3

[0036] A sodium-free and smoke-free aluminum alloy environmental protection refining agent, its ingredients include magnesium chloride 4.1Kg, potassium chloride 2.0Kg, aluminum fluoride 3.9Kg, the aluminum alloy environmental protection refining agent is obtained by melting all the above ingredients mechanically and uniformly at 760 °C .

[0037] The manufacturing method of the above-mentioned sodium-free smoke-free aluminum alloy environment-friendly refining agent comprises the following steps:

[0038] 1) Preparation before production

[0039] ① Raw material preparation for refining agent: prepare 4.1Kg of magnesium chloride, 2.0Kg of potassium chloride, and 3.9Kg of aluminum fluoride;

[0040] 2) melting

[0041]① Mix the raw materials obtained in step ① in 1) evenly to obtain the mixed raw materials;

[0042] ② Place the mixed raw material obtained in step ① in a vacuum eddy current induction heat treatment furnace, place martensitic stainless steel slag of 1 / 2 the mas...

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PUM

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Abstract

The invention discloses a sodium-free smokeless aluminum alloy environment-friendly refining agent and a manufacturing method thereof. The environment-friendly refining agent comprises the original compositions of, by weight, 40-49% of magnesium chloride, 20-29% of potassium chloride and 30-39% of aluminum fluoride, and then the environment-friendly refining agent is obtained finally through special melting treatment. Compared with the prior art, the sodium-free smokeless aluminum alloy environment-friendly refining agent is simple in proportion and does not contain sodium, flue gas is not generated in smelting, the industry blank is filled, and meanwhile, the great significance to environment-friendly modern metallurgy is achieved.

Description

technical field [0001] The invention relates to the field of aluminum alloy smelting, in particular to a sodium-free and smoke-free aluminum alloy environment-friendly refining agent and a manufacturing method thereof. Background technique [0002] In the aluminum alloy smelting process, the traditional process is to use pure aluminum ingots or purchase aluminum alloy ingots that meet the national standard for melting, use nitrogen or chlorine to refine degassing and slag removal, and use sodium salt for modification. The mechanical properties of the products produced by this process are low, and the refining effect is poor or pollution occurs, and the effective time of deterioration treatment is short, especially for the batch production time of metal molds or small castings, which has serious restrictions. Most of the refining agents in the prior art have complex components (the more complex the components, the worse the reliability and the lower the controllability), and ...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C21/00
CPCC22C1/06C22C21/00
Inventor 谢石华
Owner 谢石华
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