High-strength aluminum alloy material formed through metamorphism of salt hexafluorosilicate

An aluminum alloy material, sodium hexafluorosilicate technology, applied in the field of high-strength aluminum alloys, can solve problems such as insufficient strength of aluminum alloys, achieve the effect of reducing hydrogen content and good stirring effect

Inactive Publication Date: 2013-06-05
GUIZHOU ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in view of the defects existing in the current aluminum alloy modifier and the deterioration mechanism, which leads to insufficient strength of the aluminum alloy and cannot meet the needs of the market, the present invention uses a high-quality potassium hexafluorosilicate modification Strength aluminum alloy, refined and modified to improve the strength of aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-strength aluminum alloy material modified by hexafluorosilicate of the present invention: the composition of the alloy is Cu: 26kg, Mn: 4.5kg, Mg: 20kg, sodium hexafluorosilicate (30 mesh): 10kg, Al: 939.5kg, the content of impurity elements: single ≤ 0.05%, total ≤ 0.10%, Si and Fe are impurities brought by the raw material Al, the content is controlled at Si: ≤ 0.3%, Fe: ≤ 0.3%.

[0022] The conventional process used is:

[0023] 1. First add aluminum ingots or molten aluminum into the melting furnace, heat it to melt it completely and keep it warm at 700-750°C; the melting process is completed in a closed environment;

[0024] 2. Then add the alloying elements selected in step 1 according to the proportion of the formula to completely dissolve and melt them, and stir the mixed melt evenly;

[0025] 3. Then refine the above alloy melt in the furnace; add refining agent to the alloy melt, and stir evenly, and the melt refining is operated in a closed environmen...

Embodiment 2

[0029] A high-strength aluminum alloy material modified by hexafluorosilicate of the present invention: the alloy composition is Cu: 32kg, Mn: 7kg, Mg: 24kg, Zn: 1kg, Ti: 1.5kg, hexafluorosilicate Potassium (10 mesh): 1kg, Al: 933.5kg, of which the content of impurity elements is: single ≤ 0.05%, total ≤ 0.10%, Si and Fe are impurities brought by the raw material Al, and the content is controlled at Si: ≤ 0.3%, Fe:≤0.3%. The conventional technique adopted in the remaining steps is the same as above.

Embodiment 3

[0031] A high-strength aluminum alloy material modified by hexafluorosilicate of the present invention: the alloy composition is Cu: 29kg, Mn: 6kg, Mg: 22kg, Zn: 0.5kg, Ti: 0.75kg, silicon hexafluoride Potassium hexafluorosilicate and sodium hexafluorosilicate (20 meshes): 2.5kg each, Al: 936.75kg, of which the content of impurity elements: single ≤ 0.05%, total ≤ 0.10%, Si and Fe are impurities brought by the raw material Al , the content is controlled at Si: ≤ 0.3%, Fe: ≤ 0.3%. The conventional technique adopted in the remaining steps is the same as above.

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PUM

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Abstract

The invention discloses a high-strength aluminum alloy material formed through metamorphism of salt hexafluorosilicate. The high-strength aluminum alloy material formed through the metamorphism of the salt hexafluorosilicate comprises, by weight, 2.6-3.2% of Cu, 0.45-0.7% of Mn, 2.0-2.4% of Mg, not more than 0.1% of Zn, not more than 0.15% of Ti, not more than 0.3% of Si, and not more than 0.3% of Fe. Salt hexafluorosilicate alterant accounts for 0.1-1.0% of the total furnace burden, and the rest is Al and unavoidable trace impurities, and the trace impurities comprise, by weight, not more than 0.05% of a single and not more than 0.10% of a total. The high-strength aluminum alloy material formed through the metamorphism of the salt hexafluorosilicate is good in metamorphism refining effect, can purify a furnace body, and is high in strength.

Description

technical field [0001] The invention belongs to the field of aluminum alloys and preparation methods thereof, and relates to a high-strength aluminum alloy modified by hexafluorosilicate. Background technique [0002] Aluminum alloy is a relatively young metal material, which only began to be used industrially in the early 20th century. During World War II, aluminum was mainly used in the manufacture of military aircraft. After the war, due to the sharp decrease in the demand for aluminum in the military industry, the aluminum industry began to develop civilian aluminum alloys, expanding its application scope from the aviation industry to the construction industry, container packaging industry, transportation industry, electric power and electronics industry, Various sectors of the national economy such as machinery manufacturing and petrochemicals are applied to people's daily lives. At present, aluminum is used in a large amount and in a wide range, second only to steel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/18C22C21/16
Inventor 张中可李荣华朱绍严谢贵生刘海林
Owner GUIZHOU ACAD OF SCI
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