High-strenght aluminum alloy brazing sheet and method of manufacture

a technology of aluminum alloy brazing sheet and high-strength, which is applied in the direction of machine/engine, metal-working apparatus, vehicle components, etc., can solve the problems of insufficient strength, and achieve the effect of superior brazing properties, high strength and high strength

Inactive Publication Date: 2012-05-24
FURUKAWA SKYALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0020]According to the present invention, there is provided a high strength aluminum alloy brazing sheet exhibiting a high strength after a brazing process, and a method of manufacturing such a brazing sheet. Also, not only can this brazing sheet have superior brazing properties such as a fin joining rate, an erosion resistance and so forth, but also it is possible to attain a superior corrosion resistance, using a filler material composed of suitable components or a sacrificial anode material composed of suitable components, or using a filler material of composed of suitable components and a sacrificial anode material composed of suitable components. Especially, the aluminum alloy brazing sheet according to the present invention can be suitably utilized as a tube member in a heat exchanger for an automobile due to not only the aforesaid features but also a lightweight nature and a high thermal conductivity thereof.

Problems solved by technology

Nevertheless, a strength of the clad material, in which the core material composed of JIS 3003 alloy is used, is on the order of 110 MPa after it is subjected to a brazing process, and this strength is insufficient.

Method used

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Examples

Experimental program
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Effect test

examples

[0069]Although the present invention will be further explained in detail based on examples of the present invention and comparative examples below, the present invention cannot be limited to these examples.

[0070]Core material alloys composed of components as shown in Table 1, filler material alloys composed of components as shown in Table 2, and sacrificial anode material alloys composed of components as shown in Table 3 were cast by using a DC casting process, and then each of the cast alloys was machined and finished so that both surfaces thereof were shaved. A right side value of the formula (1) representing the relationship between the casting speed and the amount of cooling water, which was set when each of the core material alloys was cast, is shown in Table 4. Note that each of the core material alloys was subjected to no homogenization process.

TABLE 1AlloyAlloy Composition (mass %)Ref. No.SiFeCuMnMgTiZrCrVAlExamples ofA10.50.40.51.1—0.050.05——BalanceInventionA20.50.60.51.10....

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Abstract

An aluminum alloy brazing sheet having a core material of an aluminum alloy, and a filler material cladded on the core is disclosed. The core material is an aluminum alloy having about 0.05 to about 1.2 mass Si, about 0.05-about 1.0 mass % Fe, about 0.05-about 1.2 mass % Cu, and about 0.6-about 1.8 mass % Mn, balance Al and the inevitable impurities. The filler material includes an aluminum alloy having about 2.5-about 13.0 mass % Si. Also, there is provided a method of manufacturing such an aluminum alloy brazing sheet.

Description

FIELD OF THE INVENTION[0001]The present invention relates to an aluminum alloy brazing sheet used in a heat exchanger for an automobile. More specifically, the present invention relates to a high strength aluminum alloy brazing sheet which is suitably utilized as a passage-forming member for a compressed air having a high temperature air or a cooling medium, and a method of manufacturing such a brazing sheet.BACKGROUND OF THE INVENTION[0002]Since an aluminum alloy exhibits a lightweight nature and a high thermal conductivity, and since a high corrosion-resistant feature can be realized in the aluminum alloy by a suitable processing, it is utilized in a heat exchanger for an automobile, for example, a radiator, a condenser, an evaporator, a heater, an intercooler and so forth. For a tube member for the automobile heat exchanger, a 2-ply clad material or a 3-ply clad material is used: the 2-ply clad material includes a core material composed of an Al / Mn-based alloy such as JIS3003 all...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B15/01B22D25/02B23K31/02
CPCB23K1/0012Y10T428/12764B23K35/002B23K35/0238B23K35/286B23K2201/006B23K2201/14B32B15/016C22C21/00C22C21/02C22C21/10C22C21/12C22C21/14C22F1/00C22F1/04C22F1/043F28F21/084F28F21/089B23K1/203B23K2101/006B23K2101/14C09K5/14
Inventor ANDO, MAKOTONIIKURA, AKIOBEKKI, YOICHIRO
Owner FURUKAWA SKYALUMINUM
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