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High strength and toughness magnesium alloy material construction template and preparation method thereof

A technology of building templates and magnesium alloys, which is applied to the preparation of building components on site, construction, building construction, etc., can solve the problems of low absolute strength, poor toughness, and restrictions on the application of magnesium alloy material templates, so as to ensure the mechanical properties Effect

Inactive Publication Date: 2020-11-24
湖南云轮科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ordinary die-casting magnesium alloy materials have defects such as low absolute strength and poor toughness, which limit the application of magnesium alloy material templates

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0027] In addition, the present invention also proposes a method for preparing a high-strength and toughness magnesium alloy material building formwork, which is used to produce the above-mentioned high-strength and toughness magnesium alloy material building formwork, specifically including:

[0028] S1 sand blowing preheating: preheat magnesium ingots and die-casting cakes to 200°C ± 10°C after sand blowing;

[0029] S2 smelting: After preheating the magnesium ingot and the die-casting cake, put them into the melting chamber of the resistance melting furnace for melting according to the weight ratio of not less than 6:4. When the temperature rises to 350°C, feed SF 6 and N 2 Shielding gas, SF 6 The volume fraction is 0.10-0.18%, and the temperature of the melting furnace holding room is controlled at 667°C-693°C;

[0030] S3 Vacuum Die Casting: Quantitatively pour the solution in the holding chamber of the melting furnace into the pressure chamber of the die-casting machin...

Embodiment 1

[0039] The composition and mass percentage of the high-strength magnesium alloy material building formwork are: aluminum 6.7%, tin 1.7%, manganese 0.15%, iron ≤ 0.003%, nickel ≤ 0.002%, silicon ≤ 0.02%, and the balance is magnesium.

[0040] The preparation method of the high-strength and toughness magnesium alloy material building formwork comprises the following steps:

[0041] S1 sand blowing preheating: blowing the magnesium ingots with iron content <0.003% and die-casting cakes and preheating to about 200°C.

[0042] S2 Melting: Preheat the magnesium ingots and die-casting cakes and put them into the melting chamber of the resistance melting furnace according to the weight ratio of 6:4. When the temperature rises to 350°C, SF is automatically introduced 6 and N 2 Shielding gas, SF 6 The volume fraction is 0.10%. The temperature of the melting furnace holding room is controlled at 670±3°C.

[0043] S3 Vacuum Die Casting: Quantitatively pour the melt in the holding cha...

Embodiment 2

[0046] The composition and mass percentage of high-strength magnesium alloy material building formwork are: aluminum 7.4%, tin 2.4%, manganese 0.35%, iron ≤ 0.003%, nickel ≤ 0.002%, silicon ≤ 0.02%, and the balance is magnesium.

[0047] The preparation method of the high-strength and toughness magnesium alloy material building formwork comprises the following steps:

[0048] S1 sand blowing preheating: blowing the magnesium ingots with iron content <0.003% and die-casting cakes and preheating to about 200°C.

[0049] S2 Melting: Preheat the magnesium ingot and the die-casting cake according to the weight ratio of 7:3 and put them into the melting chamber of the resistance melting furnace. When the temperature rises to 350°C, SF is automatically introduced 6 and N 2 Shielding gas, SF 6 The volume fraction is 0.18%. The temperature of the melting furnace holding room is controlled at 690±3°C.

[0050] S3 Vacuum Die Casting: Quantitatively pour the melt in the holding chamb...

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Abstract

The invention discloses a high strength and toughness magnesium alloy material construction template and a preparation method thereof. The high strength and toughness magnesium alloy material construction template includes: by mass, 6.6%-7.4% of aluminum, 1.7%-2.4% of tin, 0.15%-0.35% of manganese, less than or equal to 0.003% of iron, less than or equal to 0.02% of silicon, less than or equal to0.002% of nickel and the balance magnesium. The preparation method includes S1 sand blowing preheating, S2 smelting, S3 vacuum die-casting and S4 solid solution treatment. The magnesium alloy materialconstruction template obtained by the invention has the characteristics of high strength, good toughness, light weight, large plate surface width, integral molding without welding, convenient construction, long service life, corrosion resistance, energy saving, environmentally friendly, high turnover times, high construction quality and high construction efficiency; and the preparation method optimizes a vacuum die-casting process and a solid solution treatment process, and can effectively ensure the mechanical properties of products.

Description

technical field [0001] The invention relates to a building template, in particular to a building template made of a high-strength and tough magnesium alloy material and a preparation method thereof. Background technique [0002] In the current construction formwork market, the trend of metal formwork replacing wood and bamboo formwork is relatively obvious; in the metal construction formwork market, the application of aluminum alloy is relatively mature. Magnesium alloy materials have a series of advantages such as specific strength, high specific stiffness, strong electromagnetic shielding ability, good shock absorption performance, rich resources, damping performance, casting performance, cutting performance, easy recycling, and no pollution. They are known as "21 century green environmental engineering materials". [0003] However, my country is seriously deficient in the production, development and application of magnesium alloy building templates, and there is a lot of...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22C1/02B22D17/00C22F1/06E04G9/10E04G9/06
CPCB22D17/00C22C1/02C22C23/02C22F1/06E04G9/06E04G9/10
Inventor 彭良罗福林高卫邓光跃
Owner 湖南云轮科技有限公司
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