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Five-layer aluminum alloy composite board and composite method

A technology of composite sheet and aluminum alloy, applied in chemical instruments and methods, lamination, layered products, etc., can solve the problems of limited application scope, increased cost, poor corrosion resistance, etc., to improve post-weld strength and prevent cracking , the effect of refining the as-cast structure

Inactive Publication Date: 2018-04-06
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, by adding multivariate microalloying elements, such as Cr, Zr, Ti, V and RE elements, although some properties of the alloy material can be improved, the addition of RE and other elements will increase the cost significantly, and the application range in the actual production process is limited.
By increasing the multi-layer structure design of 6xxx alloy and using its aging strengthening effect, the strength and collapse resistance of the material can be improved, but the problem of poor corrosion resistance of the middle layer (isolation layer) AA3003 alloy has not been solved

Method used

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  • Five-layer aluminum alloy composite board and composite method

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preparation example Construction

[0040] The preparation method of the five-layer aluminum alloy brazing material comprises:

[0041] Melting and casting: smelting according to a certain element ratio, through melting, electromagnetic stirring, slag removal, degassing, refining, and semi-continuous casting, respectively to obtain 4343 ingots, 3003mod1 ingots, and 3003mod2 ingots. The thickness of the ingots is about 450mm.

[0042] Face milling of the ingot: according to the specifications, the ingot is face milled, and the amount of face milling is 5-15mm.

[0043] Hot rolling of the brazing layer and the middle layer: respectively hot rolling the 4343 ingot and the 3003mod1 ingot in the above steps to a thickness of 60mm.

[0044] Heating: 3003mod2 ingot and hot-rolled 4343 brazing layer and 3003mod1 intermediate layer are attached figure 1 Combine heating in the sequence shown.

[0045] Hot rolling: hot rolling the five-layer composite material in the previous step to a thickness of 5-8mm and coiling.

...

Embodiment 1

[0052] This embodiment is a five-layer aluminum alloy brazing material, hereinafter referred to as the five-layer material, and its structure is 4343 / 3003mod1 / 3003mod2 / 3003mod1 / 4343, as shown in the attached schematic diagram figure 1 shown. The brazing layer 3 is 4343 aluminum alloy, the middle layer 2 is 3003mod1 aluminum alloy, and the core material 1 is 3003mod2 aluminum alloy. The chemical composition of 3003mod1 is 0.8% Si, 0.1% Fe, 1.8% Mn, 3.0% Zn, 0.05% Zr, the rest is Al and the unavoidable impurities less than 0.15% in total. The chemical composition of 3003mod2 is 0.05% Si, 0.3% Fe, 0.8% Cu, 1.3% Mn, 0.15% Ti, the rest is Al and the unavoidable impurities whose total amount is less than 0.15%.

[0053] The preparation method of the five-layer aluminum alloy composite material in this embodiment is carried out according to the following steps:

[0054] Alloy melting and casting: according to the set ratio of alloys, through raw material melting, electromagnetic st...

Embodiment 2

[0065] This embodiment is a five-layer aluminum alloy brazing material, hereinafter referred to as the five-layer material, and its structure is 4343 / 3003mod1 / 3003mod2 / 3003mod1 / 4343, as shown in the attached schematic diagram figure 1 shown. The brazing layer 3 is 4343 aluminum alloy, the middle layer 2 is 3003mod1 aluminum alloy, and the core material 1 is 3003mod2 aluminum alloy. The chemical composition of 3003mod1 is 0.45% Si, 0.6% Fe, 1.3% Mn, 2.0% Zn, 0.15% Zr, the rest is Al and the unavoidable impurities less than 0.15% in total. The chemical composition of 3003mod2 is 0.1% Si, 0.15% Fe, 0.5% Cu, 1.85% Mn, 0.05% Ti, the rest is Al and the unavoidable impurities whose total amount is less than 0.15%.

[0066] The preparation method of the five-layer aluminum alloy composite material in this embodiment is carried out according to the following steps:

[0067] Alloy melting and casting: according to the set ratio of alloys, through raw material melting, electromagnetic ...

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Abstract

The invention relates to a five-layer aluminum alloy composite board and a composite method. The structure of the composite board is 4xxx / 3003mod1 / 3003mod2 / 3003mod1 / 4xxx, wherein the 3003mod2 comprises the components of not greater than 0.15% of Si, not greater than 3.0% of Fe, 0.5%-0.8% of Cu, 1.3-1.85% of Mn, 0.05-0.15% of Ti, and the balance Al and inevitable impurities of which the total amount is less than 0.15%, and the 3003mod1 comprises the components of 0.45-0.8% of Si, 0.1-0.6% of Fe, 1.3-1.8% of Mn, 2.0-3.0% of Zn, 0.05-0.15% of Zr, and the balance Al and inevitable impurities of which the total amount is less than 0.15%. According to the five-layer aluminum alloy composite board and the composite method, the components and the structure are improved, and therefore the purpose of protecting a core material can be achieved, the strength of an alloy can be improved, meanwhile, the post-weld strength of the material can be improved, in addition, the composite method is simple and easy to realize, and the obtained five-layer aluminum alloy composite board is low in cost.

Description

technical field [0001] The invention mainly relates to an aluminum alloy composite plate, in particular to a five-layer aluminum alloy composite plate and a composite method. Background technique [0002] With the continuous advancement of my country's high-speed rail technology, the continuous construction of the "four vertical and four horizontal" high-speed railway networks has been completed. By the end of 2016, the operating mileage of my country's high-speed rail has exceeded 22,000 kilometers, exceeding the sum of the high-speed rail mileage of other countries in the world. According to the latest "Medium and Long-Term Railway Network Planning", by 2020, the total size of my country's railway network will reach 150,000 kilometers, including 30,000 kilometers of high-speed rail. In particular, the opening and operation of the "Fuxing" with a speed of 350 kilometers per hour marks that my country has set a new benchmark for the world's high-speed rail. Facing the situa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/10C22C21/02B32B15/01B32B15/20B32B33/00B32B37/06B32B37/10B32B37/08B32B38/00
CPCC22C21/00B32B15/016B32B37/06B32B37/08B32B37/10B32B38/0036B32B2038/0048B32B2307/714C22C21/02C22C21/10
Inventor 伍波王晓燕李龙郭辉周杰朱攀攀周德敬
Owner YINBANG CLAD MATERIAL
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