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A rare earth-containing aluminum alloy refining agent

A refining agent and aluminum alloy technology, which is applied in the field of rare earth-containing aluminum alloy refining agents, can solve the problems of refinement and deterioration, and the removal effect cannot meet the requirements, so as to achieve refined as-cast grains, good hydrogen removal effect, and reduced The effect of dendrite spacing

Active Publication Date: 2018-06-08
广西平果铝合金精密铸件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the current 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 small inclusions and non-metal oxides cannot meet the requirements, and also It is impossible to refine and modify the aluminum alloy melt while removing impurities from the aluminum alloy melt, so as to better improve the mechanical and service properties of aluminum alloy castings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A rare earth-containing aluminum alloy refining agent, comprising the following raw materials in parts by weight: 75 parts of NaCl, 53 parts of KCl, MgCl 2 12 parts, 7 parts of LiCl, 33 parts of NaF, AlF 3 11 parts, 11 parts of sodium fluoroaluminate, 8 parts of carbon powder, 30 parts of light calcium carbonate, 12 parts of marble powder, 10 parts of CaO, 3 parts of fluorite, 8 parts of rare earth; among them, the rare earth is La, Y, Ce and Er The mixture of rare earth metals is composed of the following proportions by weight: 25 parts of La, 25 parts of Y, 25 parts of Ce, and 12 parts of Er.

[0034] The preparation method of the above-mentioned rare earth-containing aluminum alloy refining agent includes the following steps: S1, pulverize each raw material separately, and pass through a 60-80 mesh screen; S2, put the raw materials prepared in step S1 into a mixer according to the weight ratio , mix thoroughly to obtain a homogeneous mixture; S3, put the homogeneous...

Embodiment 2

[0037] A rare earth-containing aluminum alloy refining agent, comprising the following raw materials in parts by weight: 70 parts of NaCl, 50 parts of KCl, MgCl 2 10 parts, LiCl5 parts, NaF36 parts, AlF 3 12 parts, 12 parts of sodium fluoroaluminate, 5 parts of carbon powder, 35 parts of light calcium carbonate, 15 parts of marble powder, 12 parts of CaO, 2 parts of fluorite, 10 parts of rare earth; among them, the rare earth is La, Y, Ce and Er The mixture of rare earth metals is composed of the following proportions by weight: 30 parts of La, 30 parts of Y, 30 parts of Ce, and 10 parts of Er.

[0038] The preparation method of the above-mentioned rare earth-containing aluminum alloy refining agent includes the following steps: S1, pulverize each raw material separately, and pass through a 60-80 mesh screen; S2, put the raw materials prepared in step S1 into a mixer according to the weight ratio , mix thoroughly to obtain a uniform mixture; S3, put the uniform mixture prepar...

Embodiment 3

[0041] A rare earth-containing aluminum alloy refining agent, comprising the following raw materials in parts by weight: 80 parts of NaCl, 56 parts of KCl, MgCl 2 15 parts, LiCl8 parts, NaF30 parts, AlF 3 10 parts, 10 parts of sodium fluoroaluminate, 10 parts of carbon powder, 25 parts of light calcium carbonate, 10 parts of marble powder, 8 parts of CaO, 5 parts of fluorite, and 5 parts of rare earth; among them, the rare earth is La, Y, Ce and Er The mixture of rare earth metals is composed of the following proportions by weight: 20 parts of La, 20 parts of Y, 20 parts of Ce, and 20 parts of Er.

[0042] The preparation method of the above-mentioned rare earth-containing aluminum alloy refining agent includes the following steps: S1, pulverize each raw material separately, and pass through a 60-80 mesh screen; S2, put the raw materials prepared in step S1 into a mixer according to the weight ratio , mix thoroughly to obtain a uniform mixture; S3, put the uniform mixture prepa...

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PUM

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Abstract

The invention discloses a rare earth-containing aluminum alloy refining agent, which comprises the following raw materials in parts by weight: 70-80 parts of NaCl, 50-56 parts of KCl, 10-15 parts of MgCl, 5-8 parts of LiCl, 30-36 parts of NaF, and 10-12 parts of AlF , 10-12 parts of sodium fluoroaluminate, 5-10 parts of carbon powder, 25-35 parts of light calcium carbonate, 10-15 parts of marble powder, 8-12 parts of CaO, 2-5 parts of fluorite, 5-10 parts of rare earth . Using the aluminum alloy refining agent of the present invention not only can obtain a good hydrogen removal effect, but also has a good modification effect on the aluminum alloy melt, can obviously reduce the grain size, and improve the uniformity of aluminum products.

Description

technical field [0001] The invention relates to the field of aluminum alloy smelting and processing, in particular to a rare earth-containing aluminum alloy refining agent. Background technique [0002] Aluminum alloy has low density, but relatively high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various profiles, has excellent electrical conductivity, thermal conductivity and corrosion resistance, and is widely used in industry. However, during the smelting process of aluminum and aluminum alloys, aluminum is very easy to absorb gas and oxidize, and the main defects in cast aluminum alloys - pores and slag inclusions are caused by solid particles such as gases and oxides remaining in the alloy. Therefore, in order to obtain high-quality melt, it is important to choose the correct and reasonable melting process, and the refining and purification treatment of the melt is also very important. [0003] The refining and purificati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C21/00
Inventor 梁健
Owner 广西平果铝合金精密铸件有限公司
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