Method for manufacturing high-strength aluminum alloy material for vehicle heat exchanger

An aluminum alloy material and heat exchanger technology, which is applied in the field of high-strength aluminum alloy materials, can solve the problems of uneven waveform height, uneven deformation, and roughening of heat sink materials, so as to improve strength and corrosion resistance, and inhibit corrosion. , the effect of inhibiting growth

Active Publication Date: 2008-07-30
MITSUBISHI ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the structure is coarsened after the brazing process, the structure before the brazing process is coarsened, or recrystallized

Method used

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  • Method for manufacturing high-strength aluminum alloy material for vehicle heat exchanger
  • Method for manufacturing high-strength aluminum alloy material for vehicle heat exchanger

Examples

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no. 1 approach

[0024]A first embodiment of the method of manufacturing an aluminum alloy material of the present invention will be described below.

[0025] In the production method of the present embodiment, a molten aluminum alloy is used, which contains Si: 0.3% to 1.2%, Fe: 0.7% to 2.0%, Mn: 0.2% to 0.8%, Zn: 0.1% to 1.0% by mass. %, and the remainder containing Al and unavoidable impurities.

[0026] The composition of aluminum alloy materials

[0027] Next, the numerical limits of the composition of the aluminum alloy material determined in the present embodiment will be described in detail.

[0028] Si: 0.3% to 1.2% (more preferably 0.8% to 1.0%)

[0029] Silicon (Si), which coexists with Mn in the form of an Al-Mn-Si compound, is dispersed in the matrix or forms a solid solution, and has the effect of increasing the strength of the aluminum alloy material.

[0030] The content of Si is preferably 0.3% to 1.2% by mass, more preferably 0.8% to 1.0%.

[0031] When the content of...

no. 2 approach

[0132] A second embodiment of the method of manufacturing an aluminum alloy material of the present invention will be described below.

[0133] In the production method of the present embodiment, a molten aluminum alloy is used, which contains Si: 0.3% to 1.2%, Fe: 0.05% to less than 0.7%, Mn: more than 0.8% to 2.0%, Zn: 0.5% by mass. %~4.0%, and the rest containing Al and unavoidable impurities.

[0134] The composition of aluminum alloy materials

[0135] Next, the numerical limits of the composition of the aluminum alloy material determined in the present embodiment will be described in detail.

[0136] Si: 0.3% to 1.2% (more preferably 0.4% to 1.2%)

[0137] Silicon (Si), which coexists with Mn in the form of an Al-Mn-Si compound, is dispersed in the matrix or forms a solid solution, and has the effect of increasing the strength of the aluminum alloy material.

[0138] The content of Si is preferably 0.3% to 1.2% by mass, more preferably 0.4% to 1.2%.

[0139] When...

Embodiment A

[0213] The manufacturing method and evaluation test items of the aluminum alloy material of Example A will be described.

[0214] Manufacturing method

[0215] In Example A, an aluminum alloy material was produced using an aluminum alloy having the composition shown in Table 1 under the production conditions shown in Table 2.

[0216] First, molten aluminum alloys obtained by melting aluminum alloys having respective compositional compositions are subjected to treatments such as processes for removing impurities by degassing and using a filter. Subsequently, the molten aluminum alloy was cast into a plate having a width of 1000 mm using a twin-roll continuous casting and rolling mill with a roll body diameter of 600 mm. During casting, the rate of solidification is controlled by the flow rate of water in the water-cooled roll 34 shown in FIG. 1 .

[0217] As shown in the schematic diagram of FIG. 1, an air-cooling fan (air-cooling fan) 32 and a mist supply unit 33 (mist su...

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Abstract

A method for producing a high tensile aluminum alloy for an auto heat exchanger, comprising: supplying molten aluminum alloy comprising: Si 0.3% to 1.2%, Fe 0.05% to 0.7%, Mn 0.8% to 2.0%, Zn 0.5% to 4.0%, and other part comprising aluminum and unavoidable impurity according to mass; processing the molten aluminum alloy into plates with thickness 2 to 12mm by continuous casting forging method; and curling the plates immediately; the temperature is 530 deg. C. or even lower of the aluminum alloy material to be curled; in addition, cooling the curled aluminum alloy material with an average cooling speed 15 deg. C/h or even higher, and then developing the aluminum alloy material; in addition, undergoing cold rolling at least two times and annealing at least two times so as to obtain finished plates with a thickness no more than 0.1mm.

Description

technical field [0001] The present invention relates to a method of manufacturing a high-strength aluminum alloy material for a heat exchanger of an automobile, such as a radiator, an automobile heater, an automobile air conditioner, etc. manufactured mainly by a brazing process High-strength automotive heat exchanger components, and the material has excellent formability and erosion resistance. [0002] This application claims Japanese Patent Application No.2006-344471 filed on December 21, 2006, Japanese Patent Application No.2007-127813 filed on May 14, 2007, Japanese Patent Application No. 2007-127862, Japanese Patent Application No. 2007-291945 filed on November 9, 2007, and Japanese Patent Application No. 2007-291947 filed on November 9, 2007, the contents of which are incorporated herein by reference. Background technique [0003] Recently, heat exchangers made of aluminum alloy materials are widely used in hydraulic equipment or industrial equipment heat exchanger....

Claims

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Application Information

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IPC IPC(8): C22C21/00C22F1/04
Inventor 黑田周麻野雅三
Owner MITSUBISHI ALUMINUM CO LTD
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