Multilayer metal composite products obtained by compound strand casting
a technology of compound strand casting and metal composite products, applied in the field of metal products, can solve the problems of time-consuming and expensive roll cladding, all the different types of layers, and handling and processing,
Inactive Publication Date: 2003-04-03
PETER HASZLER ALFRED JOHANN +1
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0041] In this manner a multilayer product is obtained that has the following advantages:
[0042] has corrosion and mechanical properties similar to that of conventional roll clad material;
[0019] Another object of this invention is to provide a method for producing the metallurgical product of the invention.
[0046] has an improved bonding between the core and the interface layer.
Problems solved by technology
A disadvantage of roll cladding is the handling and processing, e.g. rolling and surface treatment, of all the different types of layers.
Consequently roll cladding is time consuming and is expensive.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] On a pilot scale in a test the following multilayer product was produced.
[0040] A billet with a length of about 1500 mm and a total diameter of 255 mm was cast using the casting technique of DE-A-4420697, with simultaneous solidification of core and interlayer while their respective melts are in contact. The diameter of the core was 221 mm and the remainder was the interlayer. The core alloy has a chemical composition within the AA6063 range and the interlayer was within AA3003 range with a further addition of 1.3 wt. % zinc. The cast composite billet was cut lengthwise into sections of 500 mm. The sections were homogenized for 8-12 hours at 560-580.degree. C. with a heat-up and cooling rate of about 35.degree. C. / hour. The sections were hot-rolled into a rectangular shape of required thickness. Alternatively forging might be applied. The interlayer was scalped in order to obtain the required thickness of the layer in the final thickness. The scalped section was roll clad wit...
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Abstract
A metallurgical product, such as brazing sheet, comprises a core, on at least one side of the core an interlayer bonded to the core and a cladding bonded to the interlayer. The core and the interlayer are a compositely cast material having at their mutual interface a bond formed in a casting process by their simultaneous solidification from contacting melts of their respective materials. This provides a simple process, with good adhesion. The cladding is applied subsequently and the composite material is rolled into a sheet or plate product.
Description
[0001] The invention relates to a metallurgical product comprising a core, on at least one side of the core an interlayer bonded to the core and a cladding bonded to the interlayer, and to a method of producing such a metallurgical product. Particularly but not exclusively, the invention relates to such a metallurgical product in the form of a brazing sheet or a brazing plate, and also to a brazed assembly including the metallurgical product as at least one component.DESCRIPTION OF THE PRIOR ART[0002] A metallurgical product comprising a core alloy with on at least one side an interlayer and at least one cladding layer, which is bonded to the interlayer has been obtained by roll cladding the different layers together. U.S. Pat. No. 2,821,014 typically describes this method and product. A disadvantage of roll cladding is the handling and processing, e.g. rolling and surface treatment, of all the different types of layers. Consequently roll cladding is time consuming and is expensive....
Claims
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Patent Timeline
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IPC IPC(8): B22D11/00B22D19/00B22D19/08B22D19/16B23K35/28B32B15/01C22C21/02
CPCB22D11/007B22D11/008B22D19/08B23K35/286Y10T428/12764C22C21/02Y10T428/12472Y10T428/12458Y10T428/12493B32B15/016
InventorPETER HASZLER, ALFRED JOHANNBRANDNER, DIETMAR FRANZ
OwnerPETER HASZLER ALFRED JOHANN