Preparation method for magnesium-aluminum alloy

A magnesium-aluminum alloy and magnesium powder technology, which is applied in the field of magnesium-aluminum alloy, can solve problems such as inability to stably control the crystal phase force, insufficient activation of alloy raw materials, and affect the mechanical properties of magnesium-aluminum alloy, so as to improve melting efficiency and speed up high-efficiency The effect of melting and improving mechanical properties

Inactive Publication Date: 2017-10-20
广西庆达汽车零部件有限公司
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  • Application Information

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Problems solved by technology

[0003] The production cost of magnesium-aluminum alloys currently on the market is relatively high, and the conventional method is to use medium and low temperature activation technology to prepare magnesium-aluminum alloys. The degree of activation of each alloy raw material is not enough, which affects the subsequent melting processing steps, and then affects the mechanical properties of magnesium-aluminum alloys. , causing the magnesium-aluminum alloy to wear easily, further increasing the production cost of the product
Moreover, the crystal phases produced during the melting process of magnesium-aluminum alloys are subject to different degrees of extrusion, and the force between the crystal phases cannot be stably controlled, which further affects the mechanical properties of magnesium-aluminum alloys.

Method used

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  • Preparation method for magnesium-aluminum alloy

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Experimental program
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Effect test

Embodiment 1

[0024] The preparation of a preparation method of magnesium-aluminum alloy comprises the following steps:

[0025] (1) Activation treatment and melting treatment: in parts by weight, 900 parts of magnesium powder, 60 parts of aluminum powder, 4 parts of zinc powder, 1.2 parts of manganese powder, 0.3 part of copper powder, 0.2 part of silicon powder, 0.05 part of iron powder , 0.01 parts of nickel powder, 0.01 parts of beryllium powder, and 0.01 parts of nano-scale rare earth sulfate and calcium silicate assembly are put into the melting equipment, and the temperature is raised to 500 ° C at a heating rate of 40 ° C / min, and then passed into the melting equipment Inject inert gas to activate the material for 10 hours under a pressure of 3 MPa, then raise the temperature to 730°C, and perform melting treatment for 8 hours to obtain the molten material;

[0026] (2) Die-casting molding: first install the mold in the atomization spraying equipment, make the distance between the...

Embodiment 2

[0028] The preparation of a preparation method of magnesium-aluminum alloy comprises the following steps:

[0029] (1) Activation treatment and melting treatment: in parts by weight, 900 parts of magnesium powder, 70 parts of aluminum powder, 5 parts of zinc powder, 2 parts of manganese powder, 0.35 part of copper powder, 0.3 part of silicon powder, 0.06 part of iron powder , 0.02 parts of nickel powder, 0.015 parts of beryllium powder and 0.02 parts of nano-scale rare earth nitrate and calcium silicate assembly are put into the melting equipment, and the temperature is raised to 520 ° C at a heating rate of 45 ° C / min, and then passed into the melting equipment Inject inert gas to activate the material for 10.5 hours under a pressure of 5 MPa, then raise the temperature to 735°C and perform melting treatment for 9 hours to obtain the molten material;

[0030] (2) Die-casting molding: first install the mold in the atomization spraying equipment, make the distance between the...

Embodiment 3

[0032] The preparation of a preparation method of magnesium-aluminum alloy comprises the following steps:

[0033] (1) Activation treatment and melting treatment: in parts by weight, 900 parts of magnesium powder, 80 parts of aluminum powder, 6 parts of zinc powder, 3.2 parts of manganese powder, 0.4 part of copper powder, 0.5 part of silicon powder, 0.07 part of iron powder , 0.02 parts of nickel powder, 0.02 parts of beryllium powder and 0.02 parts of nano-scale rare earth sulfate and calcium silicate assembly are put into the melting equipment, and the temperature is raised to 510 ° C at a heating rate of 50 ° C / min, and then passed into the melting equipment Inject inert gas to activate the material for 10.5 hours under a pressure of 7 MPa, then raise the temperature to 735°C, and perform melting treatment for 9.5 hours to obtain the molten material;

[0034] (2) Die-casting molding: first install the mold in the atomization spraying equipment, make the distance between ...

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Abstract

The invention discloses a preparation method for a magnesium-aluminum alloy. The method comprises the following steps that (1) activating treatment and melting treatment are conducted, specifically, magnesium powder, aluminum powder, zinc powder, manganese powder, copper powder, silica powder, iron powder, nickel powder, beryllium powder and a rare earth compound and calcium silicate composition are placed into smelting equipment to be heated to 500-550 DEG C, subjected to activating treatment for 10-12 h under 3-10 MPa pressure conditions, then heated to 730-750 DEG C, and subjected to melting treatment for 8-10 h to obtain molten materials; and (2) die-casting forming is conducted, specifically, a secondary injection mode is adopted, the molten materials are compression-injected into a die with the surface coated with a release agent in a die-casting machine, and the finished magnesium-aluminum alloy is obtained. According to the preparation method for the magnesium-aluminum alloy, the material sources are wide, the cost is low, and the machining cost can be greatly lowered; and the prepared magnesium-aluminum alloy further has excellent mechanical performance, the application market for the magnesium-aluminum alloy is greatly expanded, and the alloy has wide popularization prospects.

Description

【Technical field】 [0001] The invention relates to the field of magnesium-aluminum alloys, in particular to a preparation method of magnesium-aluminum alloys. 【Background technique】 [0002] Magnesium alloy is an alloy composed of magnesium and other elements. Its characteristics are: low density, high specific strength, large specific elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloy, and resistance to organic matter and Alkali corrosion performance is good. The main alloying elements of magnesium alloys are aluminum, zinc, manganese, cerium, thorium, and a small amount of zirconium or cadmium. At present, the most widely used is magnesium-aluminum alloy, which is mainly used in aviation, aerospace, transportation, chemical industry, rocket and other industrial sectors. It is the lightest metal among practical metals. The specific gravity of magnesium is about 2 / 3 of that of aluminum, which is iron. 1 / 4. It is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C32/00C22C1/10B22D17/00B22D17/20
CPCC22C1/1036C22C23/02C22C32/0089B22D17/00B22D17/2007C22C1/1073
Inventor 冯学明
Owner 广西庆达汽车零部件有限公司
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