CLAD SHEETS FOR HEAT EXCHANGERS
First Claim
1. A composite metal sheet comprising a first clad layer comprising an AA1XXX or an AA3XXX aluminum alloy wherein the Mg content is <
- 0.2 wt % and a core layer, wherein the first clad layer is adjacent to a first side of the core layer.
2 Assignments
0 Petitions
Accused Products
Abstract
This application discloses a material comprising an aluminum metal alloy cladding fusion-cast to a metal alloy core. Also disclosed is a material comprising a metal core comprising a high content of scrap metal and having two sides, a first aluminum metal cladding fusion cast to the first side of the core layer, and a second aluminum metal cladding fusion cast to the second side of the core layer. The materials can be in a form of a sheet. Sheets are roll bonded together to create permanent metallurgical bonds except at regions where a weld-stop ink is applied. The sheets are used to make corrosion resistant heat exchangers.
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Citations
14 Claims
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1. A composite metal sheet comprising a first clad layer comprising an AA1XXX or an AA3XXX aluminum alloy wherein the Mg content is <
- 0.2 wt % and a core layer, wherein the first clad layer is adjacent to a first side of the core layer.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 13, 14)
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9. A method of making a heat exchanger comprising:
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a. obtaining a first composite metal sheet comprising a first clad layer comprising an AA1XXX or an AA3XXX aluminum alloy wherein the Mg content is <
0.2 wt % and a core layer, wherein the first clad layer is adjacent to a first side of the core layer;b. obtaining a second composite metal sheet comprising a first clad layer comprising an AA1XXX or an AA3XXX aluminum alloy wherein the Mg content is <
0.2 wt % and a core layer, wherein the first clad layer is adjacent to a first side of the core layer;c. applying weld stop ink to selected regions of the first clad layer of a first composite metal sheet; d. placing the first clad layer of the first composite metal sheet adjacent to the first clad layer of the second composite metal sheet wherein the selected regions are between the first composite metal sheet and the second composite metal sheet; e. roll-bonding the two composite metal sheets; and
,f. inflating the selected regions to form channels. - View Dependent Claims (11)
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10. A method of making a heat exchanger comprising:
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a. obtaining a first composite metal sheet comprising a first clad layer comprising an AA1XXX or an AA3XXX aluminum alloy wherein the Mg content is <
0.2 wt %, a core layer comprising aluminum scrap metal, and a second clad layer comprising an AA1XXX or an AA3XXX aluminum alloy wherein the Mg content is <
0.2 wt %, wherein the first clad layer is adjacent to a first side of the core layer and the second clad layer is adjacent to a second side of the core layer;b. obtaining a second composite metal sheet comprising a first clad layer comprising an AA1XXX or an AA3XXX aluminum alloy wherein the Mg content is <
0.2 wt %, a core layer comprising aluminum scrap metal, and a second clad layer comprising an AA1XXX or an AA3XXX aluminum alloy wherein the Mg content is <
0.2 wt %, wherein the first clad layer is adjacent to a first side of the core layer and the second clad layer is adjacent to a second side of the core layer;c. applying weld stop ink to selected regions of the first or second composite metal sheet; d. contacting the first composite metal sheet with the second composite metal sheet such that the selected regions are between the first composite metal sheet and the second composite metal sheet; e. roll-bonding the two composite metal sheets; and
,f. inflating the selected regions to form channels. - View Dependent Claims (12)
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Specification