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A kind of back flute used for aluminum alloy building formwork and its preparation method

A technology of building templates and aluminum alloys, which is applied in the on-site preparation of building components, the connectors of formwork/formwork/work frame, and construction, and can solve problems such as position conflicts, easy deformation of the back corrugated, and low tensile strength. , to achieve the effects of building construction safety, preventing mold explosion, and high tensile strength

Active Publication Date: 2022-02-15
重庆新久融科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the actual use process, part of the back flute conflicts with other parts during the installation of the back flute. During the on-site construction, it is necessary to cut off the flange of the back flute channel steel, or cut off a part of the two ends of the back flute, or weld to meet the construction needs. If the back flute Improper ratio of flute raw materials or unreasonable preparation process lead to the reduction of back flute strength and bending resistance after the above operations, resulting in mold explosion, and even more serious construction safety accidents
At present, there are few reports on the ratio of raw materials and preparation methods of the back flute, and there are fewer studies on the change of the strength of the back flute after cutting. The problems of easy deformation, low tensile strength and low bending resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: the preparation one of back corrugated

[0032] (1) Prepare materials: Weigh 0.16kg copper, 0.08kg magnesium, 0.13kg aluminum-lanthanum master alloy, 0.001kg zinc, 0.006kg iron, 0.0014kg strontium, 0.0012kg chromium, and 9.6218kg aluminum ingots respectively. The iron content in the ingot is about 0.04%, the copper content is about 0.1%, the manganese content is about 0.01%, the sulfur content is about 0.07%, the aluminum content is about 99.7%, and the balance is impurities. The lanthanum content in the aluminum-lanthanum master alloy is 10% %, the aluminum content is 88%, and the balance is impurities;

[0033] (2) Preparation of mixed liquid: put the weighed aluminum ingots, iron, strontium, and chromium into the melting furnace, raise the temperature to 510°C at 50°C / min, melt for 4h, then add copper and zinc, stir for 12min, remove After the scum on the surface is removed, nitrogen gas with a gas flow rate of 10.5m / s is introduced, and the heat prese...

Embodiment 2

[0038] Embodiment 2: the preparation two of back corrugated

[0039] (1) Prepare materials: Weigh 0.15kg copper, 0.12kg magnesium, 0.12kg aluminum-lanthanum master alloy, 0.001kg zinc, 0.008kg iron, 0.0013kg strontium, 0.001kg chromium, and 9.5987kg aluminum ingots respectively. The iron content in the ingot is about 0.04%, the copper content is about 0.1%, the manganese content is about 0.01%, the sulfur content is about 0.07%, the aluminum content is about 99.7%, and the balance is impurities. The lanthanum content in the aluminum-lanthanum master alloy is 10% %, the aluminum content is 88%, and the balance is impurities;

[0040] (2) Preparation of mixed liquid: put the weighed aluminum ingots, iron, strontium, and chromium into the melting furnace, heat up to 500°C at 50°C / min, melt for 4 hours, then add copper and zinc, stir for 10 minutes, and remove After the scum on the surface is removed, nitrogen gas with a gas flow rate of 9.5m / s is introduced, and the heat preserv...

Embodiment 3

[0045] Embodiment 3: Preparation three of back flute

[0046] (1) Raw materials: Weigh 0.18kg copper, 0.1kg magnesium, 0.15kg aluminum-lanthanum master alloy, 0.002kg zinc, 0.005kg iron, 0.0015kg strontium, 0kg chromium, 9.5615kg aluminum ingot respectively, the aluminum ingot used in this embodiment The content of iron in the medium is about 0.04%, the content of copper is about 0.1%, the content of manganese is about 0.01%, the content of sulfur is about 0.07%, the content of aluminum is about 99.7%, and the rest is impurities. The content of lanthanum in the aluminum-lanthanum master alloy is 10%. , the aluminum content is 88%, and the balance is impurities;

[0047] (2) Preparation of mixed liquid: put weighed aluminum ingots, iron, strontium, and chromium into the melting furnace, heat up to 520°C at 50°C / min, melt for 4 hours, then add copper and zinc, stir for 15 minutes, and remove After the scum on the surface is removed, nitrogen gas with a gas flow rate of 10m / s is...

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Abstract

The invention discloses a back flute used for aluminum alloy building templates and a preparation method thereof, which belongs to the technical field of building templates and comprises the following raw materials: 1.5-1.8% copper, 1-1.2% magnesium, and 1.2-1.5% aluminum-lanthanum master alloy , zinc 0.01-0.02%, iron 0.05-0.08%, strontium 0.013-0.015%, chromium 0-0.012%, the balance is aluminum ingot, the sulfur content in the aluminum ingot is ≤0.08%, and the aluminum-lanthanum master alloy The content of lanthanum is 10%, and the aluminum content is more than or equal to 88%. The purpose of the present invention is to provide a back corrugated for aluminum alloy building formwork and its preparation method. The prepared back corrugated has higher tensile strength, bending resistance, deformation The range is small, and its overall tensile strength and bending resistance are almost unchanged after back flute cutting.

Description

technical field [0001] The invention relates to the technical field of building templates, in particular to a back flute used for aluminum alloy building templates and a preparation method thereof. Background technique [0002] In recent years, with more and more high-rise buildings, the traditional wooden formwork has gradually been replaced by aluminum alloy formwork. Composed of panels, frames, fixings, and general accessories, it can be assembled and cut into different sizes of overall formwork with complex dimensions. The system aluminum formwork for assembly and industrial construction has the advantages of strong bearing capacity and many turnover times. It overcomes the defects of the traditional formwork in the past and greatly improves the construction efficiency. When pouring the wall, it is necessary to connect multiple aluminum alloy formworks to form a cavity for concrete pouring. Since the concrete will have a huge outward extrusion force on the aluminum allo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/18C22C1/03C22F1/057E04G9/06E04G17/00
CPCC22C21/18C22C21/16C22C1/03C22C1/026C22F1/057E04G9/06E04G17/00
Inventor 李双琪唐华强
Owner 重庆新久融科技有限公司
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