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Brazing aluminium alloy multilayer composite board material and method for producing the same

A technology of aluminum alloy and composite plate, applied in metal rolling, manufacturing tools, metal rolling, etc.

Inactive Publication Date: 2009-02-25
南通华特铝热传输材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the deficiency of existing brazed aluminum alloy two-layer or three-layer composite board materials, and provides an aluminum alloy multi-layer composite board material with high strength after brazing, fatigue resistance and strong heat exchange capacity and its manufacturing method

Method used

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Embodiment

[0007] Put the industrial pure aluminum ingot (AL99.70A) for remelting into the melting furnace and raise the temperature to 760°C to melt and stir. After removing the slag, use 10% of silicon, 0.4% of iron, 0.1% of copper, 0.05% of manganese, and 0.1% of zinc. Add silicon agent, iron agent and copper agent in proportion, after stirring and refining, adjust the composition and then enter the static furnace, after degassing and slag removal, cast at 740°C, and then cast into hot-rolled ingots, the ingots are sawed, Milling made of AA4045 alloy.

[0008] Put the industrial pure aluminum ingot (AL99.70A) for remelting into the melting furnace and raise the temperature to 760°C to melt and stir. After removing the slag, press 0.1% of silicon, 0.5% of iron, 0.15% of copper, 1.0% of manganese, and 0.1% of zinc. Add iron agent, copper agent and manganese agent in proportion. After stirring and refining, adjust the composition and then enter the static furnace. After degassing and sla...

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Abstract

The invention relates to a braze-welding aluminum alloy multilayer composite material used in a heat exchanger main board of an automobile. The braze-welding aluminum alloy multilayer composite material is composed of AA4045 alloy, AA3003 alloy and Mod6060 alloy. A method provided by the invention is as follows: the three alloys are produced and are welded together by a sub-arc weld after the surfaces of the three alloys are cleaned in sequence that the AA4045 alloy is at the external layer, the AA3003 alloy is at the two middle layers and the Mod6060 alloy is at the internal layer. Then hot rolling and cold rolling are carried out. The alloys are processed to obtain the preset thickness which is 1.5mm to 2.5mm according to 20 percent to 30 percent of the cold processing rate, recrystallization and annealing are carried out at the thickness with the annealing temperature of 405 DEG C to 415 DEG C, heat preservation is carried out for 2 hours to 3 hours, and a finished product can be obtained by leveling and shearing after the alloys are sent out of a furnace. During the production process, each layer of the alloys plays the following functions respectively: the AA4045 alloy is mainly used for welding, the AA3003 alloy is used for isolating and the Mod6060 alloy is used for aging strengthening, strength reinforcing and collapse resisting.

Description

technical field [0001] The invention relates to a brazing aluminum alloy multilayer composite material used for a main board of an automobile heat exchanger and a method for producing the material. Background technique [0002] At present, the brazed aluminum alloy used for the main board of automobile radiator heat exchanger in my country is mostly a two-layer or three-layer composite board material, which is not strong enough, will collapse after a period of use, has poor fatigue resistance, and is not strong in heat exchange. Contents of the invention [0003] The invention aims at the deficiency of the existing brazing aluminum alloy two-layer or three-layer composite plate material, and provides an aluminum alloy multilayer composite plate material with high strength after brazing, fatigue resistance and strong heat exchange capacity and a manufacturing method thereof. [0004] The technical scheme adopted in the present invention is: brazing aluminum alloy multilayer...

Claims

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Application Information

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IPC IPC(8): B32B15/01C22C21/02C22C21/00C22C1/02B21B1/38B21B47/02C22F1/04
Inventor 刘成荣
Owner 南通华特铝热传输材料有限公司
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