IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0206133
(2014-03-12)
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등록번호 |
US-9545777
(2017-01-17)
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발명자
/ 주소 |
- Marois, Pierre Henri
- Gatenby, Kevin Michael
- Howells, Andrew D.
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출원인 / 주소 |
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대리인 / 주소 |
Kilpatrick Townsend & Stockton, LLP
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인용정보 |
피인용 횟수 :
0 인용 특허 :
18 |
초록
▼
This application discloses a corrosion-resistant brazing sheet package for use in manufacturing tubing. The brazing sheet package includes a core layer of aluminum-containing alloy comprising from 0.1 wt % to 0.2 wt % of titanium. The core layer has a first side and a second side. The first side of
This application discloses a corrosion-resistant brazing sheet package for use in manufacturing tubing. The brazing sheet package includes a core layer of aluminum-containing alloy comprising from 0.1 wt % to 0.2 wt % of titanium. The core layer has a first side and a second side. The first side of the core layer is adjacent to a first cladding layer to form a first interface. The second side of the core layer is adjacent to a second cladding layer to form a second interface. The first cladding layer and the second cladding layer each include from 2.5 wt % to 4.0 wt % of zinc.
대표청구항
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1. A multi-layer metal sheet, comprising: a core layer of aluminum-containing alloy comprising up to 0.25 wt. % of Si, up to 0.25 wt. % of Fe, from 0.5 to 0.6 wt. % of Cu, from 1.4 to 1.6 wt. % of Mn, from 0.06 to 0.14 wt. % of Mg, up to 0.05 wt. % of Cr, up to 0.04 wt. % of Zn, from 0.1 to 0.2 wt.
1. A multi-layer metal sheet, comprising: a core layer of aluminum-containing alloy comprising up to 0.25 wt. % of Si, up to 0.25 wt. % of Fe, from 0.5 to 0.6 wt. % of Cu, from 1.4 to 1.6 wt. % of Mn, from 0.06 to 0.14 wt. % of Mg, up to 0.05 wt. % of Cr, up to 0.04 wt. % of Zn, from 0.1 to 0.2 wt. % of Ti, up to 0.05 wt. % of Sr, up to 0.15 wt. % impurities, and the balance aluminum, wherein the core layer has a first side and a second side;a first cladding layer on the first side of the core layer, wherein the first cladding layer comprises from 2.5 wt % to 4.0 wt % of zinc and from 6 wt. % to 13 wt. % of Si; anda second cladding layer on the second side of the core laver, wherein the second cladding layer comprises from 2.5 wt % to 4.0 wt % of zinc and from 6 wt. % to 13 wt. % of Si. 2. The multi-layer metal sheet of claim 1, wherein the first cladding layer and the second cladding layer comprise the same or different alloys. 3. The multi-layer metal sheet of claim 1, wherein the first side of the core layer is adjacent to the first cladding layer to form a first interface and the second side of the core layer is adjacent to a second cladding layer to form a second interface. 4. The multi-layer metal sheet of claim 1, wherein the first cladding layer and the second cladding layer are made of an alloy comprising from 6 to 13 wt. % of Si, up to 0.4 wt. % of Fe, up to 0.1 wt. % of Cu, up to 0.1 wt. % of Mn, up to 0.15 wt. % of Mg, up to 0.05 wt. % of Cr, from 2.5 to 4.0 wt. % of Zn, up to 0.05 wt. % of Ti, up to 0.02 wt. % of Sr, up to 0.15 wt. % impurities, and the balance aluminum. 5. The multi-layer metal sheet of claim 1, further comprising a fin. 6. The multi-layer metal sheet of claim 5, wherein the fin is a zinc-containing fin. 7. The multi-layer metal sheet of claim 6, wherein the fin contains zinc in an amount of 1.5 wt. % or more. 8. The multi-layer metal sheet of claim 5, wherein the fin is an aluminum-containing fin. 9. A tube made of the multi-layer metal sheet of claim 1. 10. The multi-layer metal sheet of claim 1, wherein the alloy of the core layer is produced by direct chill casting, followed by hot and cold rolling. 11. A heat exchanger comprising the multi-layer metal sheet of claim 1. 12. A multi-layer metal sheet, comprising: a core layer of aluminum-containing alloy comprising up to 0.25 wt. % of Si, up to 0.25 wt. % of Fe, from 0.5 to 0.6 wt. % of Cu, from 1.4 to 1.6 wt. % of Mn, from 0.06 to 0.14 wt. % of Mg, up to 0.05 wt. % of Cr, up to 0.04 wt. % of Zn, from 0.1 to 0.2 wt. % of Ti, up to 0.05 wt. % of Sr, up to 0.15 wt. % impurities, and the balance aluminum, wherein the core layer has a first side and a second side;a first cladding layer comprising from 6 to 13 wt. % of Si, up to 0.4 wt. % of Fe, up to 0.1 wt. % of Cu, up to 0.1 wt. % of Mn, up to 0.15 wt. % of Mg, up to 0.05 wt. % of Cr, from 2.5 to 4.0 wt. % of Zn, up to 0.05 wt. % of Ti, up to 0.02 wt. % of Sr, up to 0.15 wt. % impurities, and the balance aluminum; anda second cladding layer comprising from 6 to 13 wt. % of Si, up to 0.4 wt. % of Fe, up to 0.1 wt. % of Cu, up to 0.1 wt. % of Mn, up to 0.15 wt. % of Mg, up to 0.05 wt. % of Cr, from 2.5 to 4.0 wt. % of Zn, up to 0.05 wt. % of Ti, up to 0.02 wt. % of Sr, up to 0.15 wt. % impurities, and the balance aluminum,wherein the first side of the core layer is adjacent to the first cladding layer to form a first interface and the second side of the core layer is adjacent to a second cladding layer to form a second interface. 13. A tube made of the multi-layer metal sheet of claim 12. 14. The multi-layer metal sheet of claim 12, wherein the alloy exhibits the formation of a dense precipitation band during brazing which contains Si content up to 0.5 wt. % in the core alloy. 15. The multi-layer metal sheet of claim 14, wherein the difference in corrosion potential between the dense precipitation band and core (vs. Standard Calomel Electrode (SCE)) is between 30 to 40 mv. 16. The multi-layer metal sheet of claim 12, comprising a minimum yield strength of about 71 MPa and ultimate tensile strength of about 182 MPa, measured after brazing. 17. The multi-layer metal sheet of claim 12, comprising a corrosion potential of −670 mV or less in the core, measured after brazing. 18. The multi-layer metal sheet of claim 12, wherein the alloy withstands at least 28 days without perforation during airside corrosion testing after brazing. 19. A heat exchanger comprising the multi-layer metal sheet of claim 12.
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