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Aluminum Alloy Refining Agent

A technology of refining agent and aluminum alloy, applied in the field of aluminum alloy refining agent, can solve the problems of insufficient removal effect, large amount of refining agent used, environmental problems, etc., to improve quality and processing performance, increase uniformity and crystallinity The effect of grain refinement and reduction of aluminum slag output rate

Active Publication Date: 2016-06-29
ALNAN ALUMINIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned aluminum alloy refining agent can remove some inclusions and reduce the hydrogen content, but for the smelting process of aluminum alloys with more inclusions, especially the removal effect of inclusions such as fine inclusions and non-metal oxides cannot meet the requirements, so This leads to a large amount of refining agent used and high cost; moreover, the above-mentioned refining agent also contains harmful elements such as benzene and fluorine, which will cause environmental problems in the treatment of waste such as aluminum ash and slag inclusions after production

Method used

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  • Aluminum Alloy Refining Agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh KCl: 35%, NaCl: 40%, CaF by mass percentage 2 :5%, Na 3 AlF 6 :8%, Mg 3 N 2 :5%, C 2 Cl6 : 3% and rare earth lanthanum and cerium: 0.2%, the mass percentage of lanthanum and cerium is 1:1, mix the above several materials, stir evenly, put them into an electric furnace for overheating and melting to remove crystallization water, cool after coming out of the furnace, and finally sieve The aluminum alloy refining agent of the present invention can be obtained by filtering.

Embodiment 2

[0029] Weigh KCl: 38%, NaCl: 39%, CaF by mass percentage 2 : 6%, Na 3 AlF 6 :9%, Mg 3 N 2 :6%, C 2 Cl 6 : 4% and rare earth lanthanum and cerium: 0.3%, the mass percentage of lanthanum and cerium is 1:1, mix the above several materials, stir evenly, put them into an electric furnace for superheating and melting to remove crystal water, cool after coming out of the furnace, and finally sieve The aluminum alloy refining agent of the present invention can be obtained by filtering.

Embodiment 3

[0031] Weigh KCl: 40%, NaCl: 38%, CaF by mass percentage 2 :7%, Na 3 AlF 6 :10%, Mg 3 N 2 :7%, C 2 Cl 6 : 5% and rare earth lanthanum and cerium: 0.4%, the mass percentage of lanthanum and cerium is 1:1, mix the above several materials, stir evenly, put them into an electric furnace for overheating and melting to remove crystal water, cool after coming out of the furnace, and finally sieve The aluminum alloy refining agent of the present invention can be obtained by filtering.

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Abstract

The invention relates to an aluminum alloy refining agent, which is characterized in that it consists of KCl, NaCl, CaF 2 、Na 3 AlF 6 , Mg 2 N 3 、C 2 Cl 6 Composed of rare earth and rare earth, the above-mentioned components are respectively by mass percentage, 35-50%: 30-40%: 5-8%: 8-15%: 5-10%: 3-6%: 0.2-0.5%, the present invention The aluminum alloy refining agent has the characteristics of good impurity removal effect and stronger degassing ability, especially the ability to remove small-sized alumina inclusions; it can also reduce metal burning loss and improve the microstructure of round ingots after aluminum alloy smelting.

Description

technical field [0001] The invention relates to the field of metal smelting and processing, in particular to an aluminum alloy refining agent. Background technique [0002] Aluminum alloys inevitably absorb and carry gases and produce inclusions during the smelting process, which will cause a series of defects such as pores, shrinkage cavities, shrinkage porosity, cracks and leakage of castings, which will reduce the purity of aluminum alloys and affect the quality . Therefore, it is necessary to refine and purify the aluminum alloy smelting process to remove these gases and inclusions and improve the quality of the aluminum alloy. Adding a refining agent to the aluminum alloy for refining and purification is a commonly used measure. [0003] At present, there are three kinds of refining agents used in the aluminum alloy smelting industry, they are RJ1-1, RJ1-2, RJ2-1. These three refining agents are generally passed into the aluminum alloy melt with inert gas as the carri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C21/00
Inventor 周雄多梁敬钧陈荣立
Owner ALNAN ALUMINIUM CO LTD
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