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Method of purifying aluminium alloy melt

A technology for aluminum alloy melt and aluminum alloy, which is applied in the field of aluminum alloy melt purification for removing gas in aluminum alloy and metal melt purification, and can solve the problem of high degassing cost, increased oxidation, unfavorable uniform degassing of molten pool, etc. problem, to achieve a good effect of removing hydrogen

Inactive Publication Date: 2005-11-09
江西金达通新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the cost of degassing is high, and because most of the methods of rotary injection are used, not only the fluctuation of the liquid level is serious, resulting in increased oxidation, but also it is not conducive to the overall uniform degassing inside the molten pool

Method used

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  • Method of purifying aluminium alloy melt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Spray from the top in the degassing box: the rotor speed of the rotary blowing is 200 rpm, the gas used is N2, and the flow rate is 0.2m 3 / h, gas pressure 0.1MPa,

[0018] Blow into the melt from the bottom of the degassing box: the gas N2 used in the breathable brick, the gas pressure is 0.1MPa, and the flow rate is 0.03m 3 / h, the hydrogen content in the purified aluminum melt is 0.10ml / 100gAl, and the metal gas consumption ratio is 0.31L / kg.

Embodiment 2

[0020] Spraying from the top in the degassing box: the rotational speed of the rotary blowing rotor is 200 rpm, the gas used is N2, and the flow rate is 0.2m 3 / h, gas pressure 0.15MPa,

[0021] Blow into the melt from the bottom of the degassing box: the gas N2 used in the breathable brick, the gas pressure is 0.1MPa, and the flow rate is 0.03m 3 / h, the hydrogen content in the purified aluminum melt is 0.12ml / 100gAl, and the metal gas consumption ratio is 0.31L / kg.

Embodiment 3

[0023] Spraying from the top in the degassing box: the rotary blowing rotor speed is 200 rpm, the gas used is N2, and the flow rate is 0.3m 3 / h, gas pressure 0.1MPa

[0024] Blow into the melt from the bottom of the degassing box: the gas N2 used in the breathable brick, the gas pressure is 0.05MPa, and the flow rate is 0.05m 3 / h, the hydrogen content in the purified aluminum melt is 0.09ml / 100gAl, and the metal gas consumption ratio is 0.46L / kg.

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Abstract

A process for cleaning the molten Al-alloy by removing hydrogen features that the inertial gas is sprayed onto top surface of molten Al-alloy contained in a degassing case via rotating nozzle while onto the bottom of the molten Al-alloy via the air-permeable bricks on the bottom of the degassing case.

Description

technical field [0001] The invention relates to a method for purifying a metal melt, in particular to a method for purifying an aluminum alloy melt for removing gas in the aluminum alloy, and belongs to the field of processing the aluminum alloy melt. Background technique [0002] The purification of aluminum alloy melt is a key technology to ensure the metallurgical quality of aluminum alloy materials, and reducing the hydrogen content in aluminum melt is one of the main purposes of aluminum melt purification. Aluminum melt dehydrogenation purification technology can be divided into two categories: adsorption purification and non-adsorption purification according to the principle of action. Adsorption purification adds adsorbents (such as gas, solid purifiers, etc.) During the contact process, chemical, physical or mechanical interaction occurs with the aluminum melt, so as to achieve the purpose of hydrogen removal. Non-adsorption purification is to change the equilibrium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/05
Inventor 王俊疏达陈海䶮孙宝德
Owner 江西金达通新材料科技有限公司
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