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Secondary aluminum modification treatment process and modification treatment agent

A technology for metamorphic treatment and recycled aluminum, which is applied in the field of metamorphic treatment process and metamorphic treatment agent for recycled aluminum, which can solve problems such as reducing the metamorphic effect, and achieve the effects of improving particle roundness, refining grains, and optimizing shape and distribution.

Inactive Publication Date: 2021-03-16
顺博合金江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic and foreign secondary aluminum modification processes generally use the addition of corresponding trace elements as a modification agent directly before the end of production for modification treatment. Such treatment generally only plays a role in short-term modification. For downstream customers, remelting and recasting, The metamorphic effect will be reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A regenerated aluminum metamorphism treatment process, the steps of the process contain:

[0045] In the production process of recycled aluminum, after the alloying is completed, waste aluminum material is added to the aluminum liquid and refined;

[0046] After the refining is completed, waste aluminum material is added to the aluminum liquid to cool the aluminum liquid to 740 ° C, and a first-stage modifier is added to the aluminum liquid; wherein, 0.3 kg of a first-stage modifier is added to each ton of aluminum liquid before the addition;

[0047] Continue to add waste aluminum material to the molten aluminum to cool the molten aluminum to 710°C, and add a second-stage modifier to the molten aluminum; add 0.1 kg of a second-stage modifier to each ton of molten aluminum before adding;

[0048] After stirring and melting, the obtained molten aluminum is used for cooling and casting; wherein,

[0049] The components of the first-stage modifier and the mass percentages...

Embodiment 2

[0058] A regenerated aluminum metamorphism treatment process, the steps of the process contain:

[0059] In the production process of recycled aluminum, after the alloying is completed, waste aluminum material is added to the aluminum liquid and refined;

[0060] After the refining is completed, waste aluminum material is added to the molten aluminum to cool the molten aluminum to 760°C, and a first-stage modifying agent is added to the molten aluminum; wherein, 0.5kg of a first-stage modifying agent is added to each ton of molten aluminum before adding;

[0061] Continue to add waste aluminum material to the molten aluminum to cool the molten aluminum to 730°C, and add a second-stage modifier to the molten aluminum; add 0.3 kg of a second-stage modifier to each ton of molten aluminum before adding;

[0062] After stirring and melting, the obtained molten aluminum is used for cooling and casting; wherein,

[0063] The components of the first-stage modifier and the mass percen...

Embodiment 3

[0072]A regenerated aluminum metamorphism treatment process, the steps of the process contain:

[0073] In the production process of recycled aluminum, after the alloying is completed, waste aluminum material is added to the aluminum liquid and refined;

[0074] After the refining is completed, waste aluminum material is added to the aluminum liquid to cool the aluminum liquid to 750 ° C, and a first-stage modifying agent is added to the aluminum liquid; wherein, 0.4 kg of a first-stage modifying agent is added to each ton of aluminum liquid before adding;

[0075] Continue to add waste aluminum material to the molten aluminum to cool down the molten aluminum to 720°C, and add a second-stage modifier to the molten aluminum; add 0.2 kg of a second-stage modifier to each ton of molten aluminum before adding;

[0076] After stirring and melting, the obtained molten aluminum is used for cooling and casting; wherein,

[0077] The components of the first-stage modifier and the mass...

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PUM

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Abstract

The invention discloses a secondary aluminum modification treatment process. The secondary aluminum modification treatment process comprises the steps that in the secondary aluminum production process, after alloying is finished, a waste aluminum material is added into molten aluminum and refined; after refining is completed, a waste aluminum material is added into the molten aluminum, the moltenaluminum is cooled to 740-760 DEG C, and a first-stage modificator is added into the molten aluminum; a waste aluminum material continues to be added into the molten aluminum, the molten aluminum is to cooled to 710-730 DEG C, and a second-stage modificator is added into the molten aluminum; and after stirring and melting, the obtained molten aluminum is adopted for cooling and casting; wherein the first-stage modificator comprises the following components in percentage by mass: 50-60% of AlTiB alloy, 20-30% of aluminum-antimony alloy, and 10-20% of aluminum-rare earth alloy, and the total percentage of the components is 100%; and the second-stage modificator comprises the following components in percentage by mass: 70-80% of AlSr alloy, and 20-30% of aluminum-zirconium alloy, and the total percentage of the components is 100%. According to the secondary aluminum modification treatment process, the modification effect is improved, crystal grains are refined, the product strength is enhanced, and the burning loss of the modificator is reduced.

Description

technical field [0001] The invention relates to a metamorphic treatment process for regenerated aluminum and a metamorphic treatment agent. Background technique [0002] At present, the modification treatment process of recycled aluminum at home and abroad generally adopts the modification treatment of adding corresponding trace elements as modifiers directly before the end of production. Such treatment generally can only play a role in short-term modification. For downstream customers, remelting and recasting, Deterioration effect will be reduced. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a modification treatment process for regenerated aluminum, which improves the modification effect, refines the crystal grains, enhances the strength of the product, and reduces the burning loss of the modification agent. [0004] In order to solve the above-mentioned technical pro...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C1/03C22C21/00
CPCC22C1/026C22C1/03C22C1/06C22C21/00
Inventor 张松彬李陆军陈泰山周杨
Owner 顺博合金江苏有限公司
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