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Aluminum alloy refining agent

A refining agent and aluminum alloy technology, applied in the field of aluminum alloy refining agent, can solve the problems of unsatisfactory removal effect, large amount of refining agent, environmental problems, etc., to improve quality and processing performance, and increase the uniformity of internal structure. The effect of grain refinement and aluminum slag yield reduction

Active Publication Date: 2014-03-19
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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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%, Mg2 N 3 :5%, C 2 Cl 6 : 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 crystal water, cool after being 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 2 N 3 :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 2 N 3 :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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PUM

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Abstract

The invention relates to an aluminum alloy refining gent, the aluminum alloy refining agent is characterized by comprising the following components by mass percent: 35-50% of KCl, 30-40% of NaCl, 5-8% of CaF2, 8-15% of Na3AlF6, 5-10% of Mg2N3, 3-6% of C2Cl6 and 0.2-0.5% of rare earth. The aluminum alloy refining agent is good in cleaning effect, strong in degassing capacity, and especially capable of removing aluminum oxide impurity with slight size, reducing the metal loss, and improving the microstructure of a round ingot casting after the aluminum alloy is molten.

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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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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