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Aluminum alloy foil material for brazing type heat exchanger and production process

A technology of heat exchanger and aluminum alloy foil, which is applied in the direction of metal rolling, metal rolling, metal processing equipment, etc., can solve problems such as complex production process, achieve process simplification, improve brazing performance, and save costs

Inactive Publication Date: 2008-07-16
河南顺源宇祥铝业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of milling, hot rolling, and then cold rolling is adopted during production, and the thickness is above 0.08mm. The composite material is composed of two to three layers, and its production process is relatively complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1. Aluminum Alloy Foil Material and Production Method for Brazed Heat Exchanger

[0026] 1. Product ingredients:

[0027] Si

Fe

Cu

mn

Mg

Zn

Zr

Ti

Al

0.742

0.58

0.0552

1.34

＜0.05

1.82

0.143

0.0199

margin

[0028] 2. Production method:

[0029] (1) Melting

[0030] Add the qualified aluminum ingots and scraps into the flame reverberatory furnace, heat and melt them, stir them thoroughly, and analyze the components when the temperature reaches 730°C, and add Si, Fe, Cu, Mn, Mg, Zn, Zr, The composition of Ti is adjusted; after the composition is qualified, the temperature is adjusted, and the temperature of the molten aluminum alloy is 760°C.

[0031] (2) Static Furnace Refining

[0032] Transfer the aluminum alloy melt to the static furnace. During the transfer process and after filling the furnace, first use nitrogen and then carbon tetrachloride for r...

Embodiment 2

[0045] Embodiment 2, aluminum alloy foil material and production method for brazed heat exchanger

[0046] 1. Product ingredients

[0047] Si

Fe

Cu

mn

Mg

Zn

Zr

Ti

Al

0.888

0.428

0.0827

1.5

＜0.05

1.85

0.141

0.0241

margin

[0048] 2. Production method:

[0049] (1) Melting

[0050] Add the aluminum ingots and scraps that meet the requirements into the flame reverberatory furnace, heat and melt them, stir them fully, and analyze the components when the temperature reaches 740°C, and add Si, Fe, Cu, Mn, Mg, Zn, Zr, Ti according to the analysis results The composition is adjusted; the temperature is adjusted after the composition is qualified, and the temperature of the molten aluminum alloy is 765°C.

[0051] (2) Static Furnace Refining

[0052] Transfer the aluminum alloy melt to the static furnace. During the transfer process and after filling the furnace, first use nit...

Embodiment 3

[0064] Embodiment 3. Aluminum Alloy Foil Material and Production Method for Brazed Heat Exchanger

[0065] 1. Product ingredients:

[0066] Si

Fe

Cu

mn

Mg

Zn

Zr

Ti

Al

0.758

0.569

0.0592

1.28

＜0.05

1.82

0.165

0.0131

margin

[0067] 2. Production method:

[0068] (1) Melting

[0069] Add the aluminum ingots and scraps that meet the requirements into the flame reverberatory furnace, heat and melt them, stir them fully, and analyze the components when the temperature reaches 735°C, and add Si, Fe, Cu, Mn, Mg, Zn, Zr, Ti according to the analysis results Adjust the composition; adjust the temperature after the composition is qualified, and the temperature of the aluminum alloy melt is 755°C.

[0070] (2) Static Furnace Refining

[0071] Transfer the melt to the static furnace. During the transfer process and after filling the furnace, first use nitrogen and then carbon tet...

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PUM

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Abstract

The invention relates to an aluminum alloy foil material used in a brazing heat exchanger and a manufacturing method of the materials; wherein, indicated by weight percentage, the components of the material comprise0.50 to 1.00 of Si, less than or equal to 0.60 of Fe, 0.05 to 0.10 of Cu, 1.00 to 1.60 of Mn, less than or equal to 0.05 of Mg, 1.60 to 2.20 of Zn, 0.10 to 0.20 of Zr, 0.01 to 0.05 of Ti and unavoidable impurities and the allowance is Al; the materials are made through the manufacturing steps of melting, standing furnace refinement, grain refinement, online degassing, filtration, continuous cast rolling, cold rolling and finishing rolling. The aluminum alloy foil of the invention has the thinner thickness of 0.05mm; the tensile strength is more than 250N / mm<2>, which improves the brazing property; at the same time, the invention is simple in technique and saves the production cost by more than at least 50 percent compared with the method of hot rolling, and therefore, the aluminum alloy foil of the invention has better economic and social benefits.

Description

[0001] 1. Technical field: The present invention relates to an aluminum alloy foil material, in particular to an aluminum alloy foil material for a brazed heat exchanger and a production method thereof. 2. Background technology: [0002] At present, the aluminum alloy foils used in heat exchangers such as automotive air conditioners, intercoolers, heaters, and water tanks are mainly 3003 or 3A21 aluminum foils. The former is made of silicon, iron, copper and manganese, and the latter Made of raw materials such as silicon, iron, copper, manganese and titanium. Since these two aluminum foils have no anodic protection effect, the pitting corrosion of the aluminum foil will be increased during brazing; on the other hand, the manganese content in the 3003 and 3A21 aluminum foils is low, and the reduction of the manganese content causes the solidus temperature to decrease. Therefore, the solidus temperature of these two grades of aluminum foil is low, and deformation and collapse ar...

Claims

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Application Information

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IPC IPC(8): C22C21/10B23P15/00B21B1/46B21B37/16
Inventor 王镭张清莫振海朱应离
Owner 河南顺源宇祥铝业科技有限公司
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