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Magnesium alloy refining unit

A smelting equipment and magnesium alloy technology, applied in the field of purifying smelting equipment for magnesium alloys, can solve the problems of large metal oxidation and burning loss, reduced quality and performance, and more inclusions in magnesium alloys, and achieve small metal oxidation and burning loss, The effect of improved quality and performance, ease of production process

Active Publication Date: 2010-06-23
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since all magnesium ingots are heated and melted at the same time, the oxidation and burning loss of magnesium ingots are relatively large; on the other hand, other alloy element metals such as aluminum, manganese or aluminum-manganese intermediate alloys have a large gap between their melting point and density and that of magnesium. In order to fully melt these alloy element metals, it is necessary to increase the melting temperature and prolong the melting time, which further exacerbates the oxidation and burning loss during the smelting process of magnesium alloys; Oxidative combustion of alloys requires a substantial reduction in the temperature of the magnesium alloy melt, which not only increases energy consumption, but also reduces production efficiency
Therefore, when traditional magnesium alloy smelting equipment is used to produce magnesium alloy, energy consumption is high, production efficiency is low, metal oxidation and burning loss are large and difficult to control, and the prepared magnesium alloy has many inclusions, reduced quality and performance, and is unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1: 1000 kilograms of AZ91D magnesium alloy smelting method.

[0055] 1. Melting preparation

[0056] Connect the power supply of preheating furnace 1, melting furnace 3, alloying furnace 4 and standing holding furnace 5, and heat up. The preheating furnace 1 is heated up to 420-460°C, the melting furnace 3, the alloying furnace 4 and the static holding furnace 5 are respectively heated up to 600-620°C, and the protective gas (0.2-0.5vt% SF 6 +N 2 That is, the protective gas contains 0.2 to 0.5 volume percent of SF 6 , and the rest are N 2 ).

[0057] 2. Preheating of pure magnesium ingot

[0058] A preheating furnace 1 is used to preheat the pure magnesium ingot with a clean surface to 380-420°C.

[0059] 3. Pure magnesium ingot melting

[0060]First add 100-120 kg of pure magnesium ingots with a clean surface to completely melt them under the protection of the aforementioned mixed gas, and then add the pure magnesium ingots preheated to the set temper...

Embodiment 2

[0067] Embodiment 2: 1000 kilograms of AZ80 magnesium alloy smelting method.

[0068] 1. Melting preparation

[0069] Connect the power supply of preheating furnace 1, melting furnace 3, alloying furnace 4 and standing holding furnace 5, and heat up. The temperature of the preheating furnace 1 is raised to 420-460°C, the temperature of the melting furnace 3, the alloying furnace 4 and the static holding furnace 5 is raised to 600-620°C, and a protective gas (0.2-0.5vt% SF 6 +N 2 That is, the protective gas contains 0.2 to 0.5 volume percent of SF 6 , and the rest are N 2 ).

[0070] 2. Preheating of pure magnesium ingot

[0071] A preheating furnace 1 is used to preheat the pure magnesium ingot with a clean surface to 380-420°C.

[0072] 3. Pure magnesium ingot melting

[0073] First add 100-120 kg of pure magnesium ingots with a clean surface to completely melt them under the protection of the aforementioned mixed gas, and then add the pure magnesium ingots preheated t...

Embodiment 3

[0080] Embodiment 3: 1000 kilograms of AS41B magnesium alloy smelting method.

[0081] 1. Melting preparation

[0082] Connect the power supply of preheating furnace 1, melting furnace 3, alloying furnace 4 and standing holding furnace 5, and heat up. The temperature of the preheating furnace 1 is raised to 420-460°C, the temperature of the melting furnace 3, the alloying furnace 4 and the static holding furnace 5 is raised to 600-620°C, and a protective gas (0.2-0.5vt% SF 6 +N 2 That is, the protective gas contains 0.2 to 0.5 volume percent of SF 6 , and the rest are N 2 )

[0083] 2. Preheating of pure magnesium ingot

[0084] A preheating furnace 1 is used to preheat the pure magnesium ingot with a clean surface to 380-420°C.

[0085] 3. Pure magnesium ingot melting

[0086] First add 100-120 kg of pure magnesium ingots with a clean surface to completely melt them under the protection of the aforementioned mixed gas, and then add the pure magnesium ingots preheated t...

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Abstract

The invention relates to magnesium alloy refining unit which comprises a pure magnesium ingot preheating furnace, a pure magnesium ingot melting furnace, an alloying element induction melting furnace, an alloying furnace, a holding furnace, a mixed gas protecting device, a heavy melted magnesium alloy ingot casting machine and / or a deformed magnesium alloy billet casting machine. By using the magnesium alloy refining unit to product magnesium alloy, the energy consumption for production is low, the production efficiency is high, the oxidation and burning loss of the metal during the production process are small, the production process is easy to control, the prepared magnesium alloy has a small amount of inclusion, the quality and the performance of the magnesium alloy can be improved, and the performance of the magnesium alloy is stable.

Description

technical field [0001] The invention relates to a magnesium alloy purification and smelting equipment. Background technique [0002] Magnesium alloy has very significant advantages in many occasions due to its low density (it is the smallest density among practical structural metals). Especially in aviation, aerospace, and automobiles, motorcycles, high-speed / light rail trains and other transportation vehicles, it has irreplaceable advantages. The low density of the components can save energy, and it also has the advantage of small inertia in the case of high-speed movement, which has a significant effect on the starting and braking of vehicles. [0003] At present, the smelting equipment for magnesium alloys are resistance heating melting furnaces, induction heating melting furnaces, or gas / coal-fired melting furnaces. The traditional smelting method of magnesium alloy is to use one of the above-mentioned melting furnaces to melt all the magnesium ingots to be smelted at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B26/22F27B14/04
Inventor 张奎李兴刚米绪军熊柏青刘正李伟李永军徐玉磊
Owner GRIMAT ENG INST CO LTD
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