ALUMINIUM BRAZING SHEET
2 Assignments
0 Petitions
Accused Products
Abstract
A multi layered aluminum alloy brazing sheet including a core material, an intermediate layer on at least one side of the core material, the intermediate layer comprising an Al—Si braze alloy, and a thin covering layer on top of the intermediate layer, The core material and the covering layer have a higher melting temperature than the Al—Si braze alloy. The covering layer includes Bi 0.01 to 1.0 wt-%, Mg≦0.01 wt-%, Mn≦1.0 wt-%, Cu≦1.2 wt-%, Fe≦1.0 wt-%, Si≦4.0 wt-%, Ti≦0.1 wt-%, Zr, Cr, V and/or Sc in total ≦0.2%, and unavoidable impurities each in amounts less than 0.05 wt-%, and a total impurity content of less than 0.2 wt-%, the balance including aluminium. A heat exchanger including the alloy brazing sheet.
43 Citations
39 Claims
-
1-11. -11. (canceled)
-
12. A multi layered aluminum alloy brazing sheet, comprising:
-
a core material; an intermediate layer on at least one side of the core material, the intermediate layer comprising an Al—
Si braze alloy; anda thin covering layer on top of the intermediate layer, wherein the core material and the covering layer has a higher melting temperature than the Al—
Si braze alloy,wherein the covering layer comprising Bi 0.01 to 1.0 wt-%, Mg ≦
0.05 wt-%,Mn ≦
1.0 wt-%,Cu ≦
1.2 wt-%,Fe ≦
1.0 wt-%,Si ≦
4.0 wt-%,Ti ≦
0.1 wt-%,Zn ≦
6 wt-%, Sn ≦
0.1 wt-%, In ≦
0.1 wt-%, andunavoidable impurities each in amounts less than 0.05 wt-%, and a total impurity content of less than 0.2 wt-%, and a balance of aluminum. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
Fe ≦
1.0%,Si ≦
1.0%,Ti ≦
0.2%,Mg ≦
2.5%,Zr, Cr, V and/or Sc in total ≦
0.2%, andunavoidable impurities each in amounts less than 0.05% and a total impurity content of less than 0.2%, and a balance of aluminum.
-
-
38. The aluminum alloy brazing sheet according to claim 37, wherein the core comprises Mg 0.03-2.0%.
-
39. A heat exchanger, comprising:
-
an aluminum alloy brazing sheet comprising a core material; an intermediate layer on at least one side of the core material, the intermediate layer comprising an Al—
Si braze alloy; anda thin covering layer on top of the intermediate layer, wherein the said core material and the covering layer has a higher melting temperature than the Al—
Si braze alloy,wherein the covering layer comprising Bi 0.01 to 1.0 wt-%, Mg ≦
0.05 wt-%,Mn ≦
1.0 wt-%,Cu ≦
1.2 wt-%,Fe ≦
1.0 wt-%,Si ≦
4.0 wt-%,Ti ≦
0.1 wt-%,Zn ≦
6 wt-%, Sn ≦
0.1 wt-%, In ≦
0.1 wt-%, andunavoidable impurities each in amounts less than 0.05 wt-%, and a total impurity content of less than 0.2 wt-%, and a balance of aluminum.
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeGränges Sweden AB
-
Original AssigneeSAPA Heat Tranfer AB
-
InventorsStenqvist, Torkel, Abrahamsson, David, Westergård, Richard
-
Application NumberUS13/497,009Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current428/654CPC Class CodesB23K 35/002 at least one of the workpie...B23K 35/0238 layeredB23K 35/286 Al as the principal constit...B23K 35/383 mainly containing noble gas...B32B 15/016 all layers being formed of ...C22C 21/02 with silicon as the next ma...F28F 21/089 Coatings, claddings or bond...Y10T 428/12764 Next to Al-base component
