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Additive for smelting aluminium alloy and preparation method and application method thereof

An additive and aluminum alloy technology, applied in the field of additives for smelting aluminum alloys, can solve the problems of unstable absorption rate, low absorption rate and high dissolution temperature, and achieve the effects of shortening melting time, increasing melting speed, and promoting rapid melting

Inactive Publication Date: 2009-12-09
HEBEI UNIV OF TECH
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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 to provide additives for smelting aluminum alloys and their preparation and application methods. The additives solve the problems of high dissolution temperature, low absorption rate and absorption without reducing the quality of aluminum alloy products. rate instability problem

Method used

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  • Additive for smelting aluminium alloy and preparation method and application method thereof
  • Additive for smelting aluminium alloy and preparation method and application method thereof
  • Additive for smelting aluminium alloy and preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Iron additives for smelting aluminum alloys

[0034] The raw material composition is: iron powder with a particle size of 120 mesh and a purity of ≥98%, and an ion composition mass percentage of F - : 47.64, K + : 37.66, Al 3+ : 8.71, Si 4+ : 3.37, Ca 2+ : 1.83, S 6+ : 0.52 and O 2- : 0.26 co-solvent, aluminum powder with a particle size of 80 mesh and purity ≥ 98%, unexpanded perlite with a particle size of 80 mesh and higher fatty acid.

[0035] The ratio of raw materials is: 75% iron powder; 18% co-solvent; 4% aluminum powder; 2% unexpanded perlite; 1% higher fatty acid.

[0036] Preparation method: Use a ball mill to fully mix the well-proportioned raw materials to form a composite powder, then put it into a mold, and use a hydraulic press to perform cold pressing at room temperature, a pressure of 100 MPa, and a holding time of 30 seconds. Namely, the iron additive for smelting aluminum alloy is obtained, which is composed of 75% iron powder, 18% cosolvent, ...

Embodiment 2

[0041] Manganese additives for smelting aluminum alloys:

[0042] The raw material composition is: manganese powder with a particle size of 100 mesh and a purity of ≥98%, and an ion composition mass percentage of F - : 47.64, K + : 37.66, Al 3+ : 8.71, Si 4+ : 3.37, Ca 2+ : 1.83, S 6+ : 0.52 and O 2- : 0.26 co-solvent, aluminum powder with a particle size of 80 mesh and purity ≥ 98%, unexpanded perlite with a particle size of 80 mesh and higher fatty acid.

[0043] The ratio of raw materials is: 81.5% of manganese powder; 15% of co-solvent; 2% of aluminum powder; 1% of unexpanded perlite; 0.5% of higher fatty acid.

[0044] Preparation method: Use a ball mill to fully mix the well-proportioned raw materials into a composite powder, then put it into a mold, and use a hydraulic press to perform cold pressing at room temperature, a pressure of 50 MPa, and a holding time of 60 seconds. That is to say, the manganese agent additive for smelting aluminum alloy is prepared, and...

Embodiment 3

[0048] Titanium additive for smelting aluminum alloy

[0049] The raw material composition is: titanium powder with a particle size of 100 mesh and a purity of ≥98%, and an ion composition mass percentage of F - : 47.64, K + : 37.66, Al 3+ : 8.71, Si 4+ : 3.37, Ca 2+ : 1.83, S 6+ : 0.52 and O 2- : 0.26 co-solvent, aluminum powder with a particle size of 80 mesh and purity ≥ 98%, unexpanded perlite with a particle size of 80 mesh and higher fatty acid.

[0050] The ratio of raw materials is: 70% of titanium powder; 20% of co-solvent; 5% of aluminum powder; 3% of unexpanded perlite; 2% of higher fatty acid.

[0051] Preparation method: Use a ball mill to fully mix the well-proportioned raw materials to form a composite powder, then put it into a mold, and use a hydraulic press to perform cold pressing at room temperature, a pressure of 80 MPa, and a holding time of 50 seconds. That is to say, the titanium agent additive for smelting aluminum alloy is prepared, and its com...

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Abstract

The invention relates to an additive for smelting aluminium alloy and a preparation method and an application method thereof, relating to the technical field of nonferrous alloy manufacturing with a special additive. The additive is composed of metal powder, cosolvent, heat-generating agent, detonating agent and moisture proof agent. The preparation method comprises the following steps: raw materials comprising the following by mass percentage, 70-81.5% of metal powder, 15-20% of cosolvent, 2-5% of heat-generating agent, 1-3% of detonating agent and 0.5-2% of moisture proof agent, are fully mixed evenly into compound powder with a ball mill, and the mixture is put into a mould, and is performed with cold pressing by a hydraulic pressure machine so as to obtain the additive for smelting aluminium alloy. The application method of the invention comprises the following steps: a graphite crucible filled with a pure aluminium pig is arranged in a resistance furnace to be heated until the aluminium pig is melted into aluminium liquid, and then the additive is added to react with the aluminium liquid so as to obtain aluminium alloy. Under the condition that the quality of aluminium alloy is not lowered, the additive solves the problems of high dissolving temperature, low absorptivity and unstable absorptivity of the additive.

Description

technical field [0001] The technical solution of the present invention relates to the technical field of manufacturing non-ferrous alloys using special additives, specifically additives for smelting aluminum alloys and their preparation and application methods. Background technique [0002] Aluminum alloy is a light metal material widely used in industrial production at present. It has the advantages of low density, high reflectivity to light, heat and radio waves, good surface treatment performance, superior shock absorption and noise reduction performance, so it is widely used in aerospace, aviation, etc. , navigation, automobiles, building materials and daily style and other fields. When smelting aluminum alloys, one or more metal elements or non-metal elements need to be added to produce aluminum alloys of different compositions or grades to meet different performance requirements. Commonly used elements are silicon, iron, copper, manganese, titanium, chromium, and zirc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C21/00
Inventor 赵维民李海鹏王志峰琚子来丁俭李永艳董斌张宏标黄春瑛蔚成全史中方
Owner HEBEI UNIV OF TECH
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