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Aluminum alloy smelting and impurity-removing method based on electromagnetic stirring

An electromagnetic stirring and aluminum alloy technology, which is applied in the field of alloy smelting, can solve the problems of low efficiency, time-consuming and laborious impurity removal, and increase the cost of production line failure rate, so as to achieve high purity, improve production efficiency, and automate and improve production. Effect of impurity removal efficiency and melt purification effect

Pending Publication Date: 2020-02-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of traditional aluminum alloy smelting, the impurity removal method for melt purification, for the aluminum alloy melt with high performance requirements, it is possible to use manual stirring or pure mechanical stirring to enter the melt into the contact stirring method. Oxidation inclusions and refining agent inclusions will be reintroduced into the melt, which is time-consuming and laborious and the removal efficiency is not high, and adding this equipment specially in the production line will increase the cost and failure rate of the production line

Method used

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  • Aluminum alloy smelting and impurity-removing method based on electromagnetic stirring
  • Aluminum alloy smelting and impurity-removing method based on electromagnetic stirring

Examples

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Effect test

Embodiment 1

[0047] A method for melting and removing impurities of aluminum alloy based on electromagnetic stirring, comprising the following steps:

[0048] S1: Melting furnace pretreatment;

[0049] S2: adding high-purity aluminum with a purity of 99% or more to the pretreated smelting furnace;

[0050] S3: heating the melting furnace;

[0051] S4: adding Al-Si master alloy;

[0052] S5: fusion of high-purity aluminum and Al-Si master alloy;

[0053] S6: adding zinc, Mn agent, Ti agent and refining agent with a purity of 99% or more;

[0054] S7: Fusion of all metals in S5 and S6;

[0055] S8: transfer the aluminum alloy melt obtained in S7 to a launder for casting and rolling;

[0056] In the S3 process, the temperature of the melting furnace is set at 720-800°C, and electromagnetic stirring is used for fusion. The working parameters of the inductor (coil) are: sinusoidal alternating current (50Hz), apparent power 230KVA, frequency 4.5-5.5Hz , the working current is 200A, stirrin...

Embodiment 2

[0083] An aluminum alloy, which is produced based on the aluminum alloy smelting and impurity removal method described in Example 1.

[0084] Working principle: According to the composition requirements of aluminum alloy products, add pure aluminum, Al-Si master alloy and pure zinc, Mn agent and Ti agent into the melting furnace, and add them one by one in order. Turn on the resistance heating device of the smelting furnace and heat to 780°C to melt the alloy components into a uniform Al-Si-Zn intermediate aluminum alloy metal melt.

[0085] Keep the setting value of the smelting furnace at 780°C for heat preservation, and blow CCl into the aluminum intermediate metal melt through pure argon with a purity of 99.99% and a pressure of 0.4Mpa in the smelting furnace 4 Refining agent, at this time, when the melt temperature is 720-740°C, turn on the electromagnetic stirring device (installed power 70KW, 380V three-phase sinusoidal alternating current, 50Hz), and the working parame...

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Abstract

The invention discloses an aluminum alloy smelting and impurity-removing method based on electromagnetic stirring, and relates to the field of alloy smelting. A novel aluminum alloy meeting specifications and with high practicability and relatively low manufacturing cost can be obtained. The aluminum alloy smelting and impurity-removing method comprises the following steps that S1, a smelting furnace is pretreated; S2, high-purity aluminum with the purity being 99% or above is added into the pretreated smelting furnace; S3, the smelting furnace is heated; S4, an Al-Si intermediate alloy is added; S5, the high-purity aluminum is fused with the Al-Si intermediate alloy; S6, zinc with the purity being 99% or above, a Mn agent, a Ti agent and a refining agent are added; S7, all metals in the step S5 and S6 are fused; and S8, aluminum alloy melt obtained in the step S7 is subjected to still standing and then transferred to a flow groove for cast rolling. According to the aluminum alloy smelting and impurity-removing method based on electromagnetic stirring, the impurity-removing efficiency and melt purification effect can be greatly improved in the aluminum alloy smelting process; and the fewer steps are used in the aluminum alloy smelting and impurity-removing method, so that the smelting process is simplified.

Description

technical field [0001] The invention relates to the field of alloy smelting, in particular to a method for melting and removing impurities of aluminum alloy based on electromagnetic stirring. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of industrial economy, the demand for welded structural parts of aluminum alloy is increasing day by day, so that the research on weldability of aluminum alloy is also in-depth. Aluminum alloy is currently the most widely used alloy. [0003] In today's society, with the application of aluminum alloys in battery materials, rail transit and other fields, the requirements for the comprehensive mechanical properties of aluminum alloys are getting higher and higher. [0004] The improvement of performance requirements requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22B9/00C22C21/00
CPCC22B9/00C22C1/026C22C1/03C22C1/06C22C21/00
Inventor 黄元春雒晓宇
Owner CENT SOUTH UNIV
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