Fluoride-free particle refining agent for aluminum alloy, and preparation method of refining agent

A manufacturing method and technology of aluminum alloy, applied in the field of material science, can solve the problems of limited slag removal effect, aluminum oxidation burning loss, large environmental pollution, etc., and achieve the effect of efficient slag removal, reduction of aluminum oxidation, and good effect of impurity removal.

Inactive Publication Date: 2018-12-28
HUNAN JINLIANXING SPECIAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an environmentally friendly, efficient alkali and slag removal, impurity removal solution for the problems in the background technology that have great environmental pollution, limited slag removal effect, easy formation of solvent inclusions, and serious aluminum oxidation and burning. Fluorine-free granular refining agent for aluminum alloys with good effect, reduced aluminum loss and less consumption

Method used

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  • Fluoride-free particle refining agent for aluminum alloy, and preparation method of refining agent
  • Fluoride-free particle refining agent for aluminum alloy, and preparation method of refining agent
  • Fluoride-free particle refining agent for aluminum alloy, and preparation method of refining agent

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Embodiment 1

[0043] A kind of fluorine-free particle refining agent for aluminum alloy, made of MgCl 2 Powder 40Kg, KCl powder 40Kg, CaCl 2 Powder 10Kg, K 2 CO 3 Made of powder 10Kg.

[0044] A preparation method of a fluorine-free granular refining agent for aluminum alloys, comprising the following steps:

[0045] 1) Weigh MgCl 2 Powder 40Kg, KCl powder 40Kg, CaCl 2 Powder 10Kg, K 2 CO 3 Powder 10Kg, the weighed MgCl 2 powder, KCl powder, CaCl 2 Powder, K 2 CO 3 The powder is put into a double-crank mixer and mixed evenly to obtain a mixture.

[0046] 2) Put the mixture into a resistance crucible furnace equipped with an iron crucible.

[0047] 3) Turn on the resistance crucible furnace to heat up, and observe the melting situation while heating up.

[0048] 4) When the mixture starts to melt, reduce the heating power of the resistance crucible furnace and heat slowly, and ensure that the temperature rise rate of the mixture is less than or equal to 2°C / min.

[0049] 5) Aft...

Embodiment 2

[0056] A kind of fluorine-free particle refining agent for aluminum alloy, made of MgCl 2 Powder 50Kg, KCl powder 20Kg, CaCl 2 Powder 15Kg, K 2 CO 3 Made of powder 15Kg.

[0057] A preparation method of a fluorine-free granular refining agent for aluminum alloys, comprising the following steps:

[0058] 1) Weigh MgCl 2 Powder 50Kg, KCl powder 20Kg, CaCl 2 Powder 15Kg, K 2 CO 3 Powder 15Kg, the weighed MgCl 2 powder, KCl powder, CaCl 2 Powder, K 2 CO 3 The powder is put into a double-crank mixer and mixed evenly to obtain a mixture.

[0059] 2) Put the mixture into a resistance crucible furnace equipped with an iron crucible.

[0060] 3) Turn on the resistance crucible furnace to heat up, and observe the melting situation while heating up.

[0061] 4) When the mixture starts to melt, reduce the heating power of the resistance crucible furnace and heat slowly, and ensure that the temperature rise rate of the mixture is less than or equal to 2°C / min.

[0062] 5) Aft...

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Abstract

The invention provides a fluoride-free particle refining agent for an aluminum alloy, and a preparation method of the refining agent. The refining agent is prepared from the following raw materials inpercentage by weight: 20-60% of MgCl<2> powder, 20-60% of KCl powder, 10-40% of CaCl<2> powder, and 10-40% of K<2>CO<3> powder. The aluminum loss is reduced, and the refining agent is a non-heating flux, so that aluminum oxidation can be reduced; the efficiency is high, and the reaction with molten aluminum is sufficient, so that the usage amount is greatly reduced; the refining agent is environment-friendly and free of smoke and dust in use, and does not contain harmful compounds, so that the emission level of particulate matters of a chimney can be guaranteed to reach the standard; the effect of removing alkali metals (Na, Ca and Li) and slags (oxide, boride and carbide) is obvious; and the impurity removal effect is good, and the cleanliness of the aluminum alloy produced with the method is higher.

Description

technical field [0001] The invention belongs to the field of material science, in particular to a fluorine-free granular refining agent for aluminum alloys and a manufacturing method thereof. Background technique [0002] Unfavorable production conditions such as inclusions and gases often occur during the aluminum alloy smelting process, which greatly affects product quality. Common inclusions are oxides, carbides, nitrides, borides, etc. Among them, oxide inclusions (such as Al 2 o 3 , MgO) pollute the melt the most, these inclusions not only provide a good carrier for the gas, increase the gas content in the melt, but also easily cause defects such as slag inclusion and looseness in the casting billet. In addition, due to the role of raw and auxiliary materials, some impurity elements harmful to the aluminum alloy melt often exist during the smelting process, such as Na, Ca, Li and other alkali metals, thereby reducing the physical and chemical properties of the aluminu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06
CPCC22C1/06
Inventor 陈闻天陈勇刚贺盼陈欢丁智勇
Owner HUNAN JINLIANXING SPECIAL MATERIALS CO LTD
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