Aluminum alloy clad sheet for a heat exchanger and its production method
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0335950
(2008-12-16)
|
등록번호 |
US8043711
(2011-10-12)
|
우선권정보 |
JP-2007-007-338167(2007-12-27) |
발명자
/ 주소 |
- Koshigoe, Fumihiro
- Ueda, Toshiki
- Kimura, Shimpei
- Kinefuchi, Masao
- Matsumoto, Katsushi
- Tamura, Eiichi
|
출원인 / 주소 |
|
대리인 / 주소 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
2 |
초록
▼
Disclosed herein is an aluminum alloy clad sheet for a heat exchanger including a core layer, a sacrificial layer formed on one surface of the core layer, and a filler layer including an Al—Si based alloy formed on the other surface of the core layer. The core layer includes a predetermined amount o
Disclosed herein is an aluminum alloy clad sheet for a heat exchanger including a core layer, a sacrificial layer formed on one surface of the core layer, and a filler layer including an Al—Si based alloy formed on the other surface of the core layer. The core layer includes a predetermined amount of Si, Cu, Mn, Ti, and Mg, the remainder including Al and inevitable impurities, and the sacrificial layer includes a predetermined amount of Si, Mn, and Zn, the remainder including Al and inevitable impurities. The core layer has a crystal grain size after the brazing heat treatment at 595° C. for 3 minutes of at least 50 μm and less than 300 μm. The filler layer and the sacrificial layer are defined for their thickness, and the number of intermetallic compounds in the core layer is also defined to a predetermined range. By such constitution, the aluminum alloy clad sheet has improved fatigue life and post-braze strength, high corrosion resistance, and excellent erosion resistance and brazeability.
대표청구항
▼
What is claimed is: 1. An aluminum alloy clad sheet for a heat exchanger comprising a core layer, a sacrificial layer formed on one surface of the core layer, and a filler layer comprising an Al—Si based alloy formed on the other surface of the core layer, whereinthe core layer comprises 0.5 to 1.1
What is claimed is: 1. An aluminum alloy clad sheet for a heat exchanger comprising a core layer, a sacrificial layer formed on one surface of the core layer, and a filler layer comprising an Al—Si based alloy formed on the other surface of the core layer, whereinthe core layer comprises 0.5 to 1.1 mass % Si, 0.5 to 1.1 mass % Cu, at least 0.05 mass % and less than 0.6 mass % Mn, 0.05 to 0.25 mass % Ti, up to 0.45 mass % Mg, and the remainder of Al and inevitable impurities,the sacrificial layer comprises in excess of 0.5 mass % and up to 1.1 mass % Si, 0.001 to 1.7 mass % Mn, 3.0 to 6.0 mass % Zn, and the remainder of Al and inevitable impurities,the core layer has a crystal grain size after brazing heat treatment at 595° C. for 3 minutes of at least 50 μm and less than 300 μmthe filler layer has a thickness of 20 to 55 μm, and the sacrificial layer has a thickness of 25 to 50 μm, andgrains of intermetallic compounds selected from the group consisting of Al—Mn, Al—Mn—Si, Al—Fe, Al—Fe—Si, and Al—Mn—Fe—Si-based intermetallic compounds having a grain diameter of at least 0.65 μm are present in the core layer and are distributed such that those having a grain diameter of 0.65 to 15 μm are present in the core layer in an amount not exceeding 5×103 grains per mm2, and those having a grain diameter in excess of 15 μm are present in the core layer in an amount not exceeding 50 grains per mm2.
이 특허에 인용된 특허 (2)
-
Doko Takeyoshi,JPX ; Okada Koji,JPX ; Onda Tokinori,JPX ; Takeuchi Hiroaki,JPX ; Hirano Yoji,JPX, Aluminum alloy brazing material and brazing sheet adaptable for heat exchanges.
-
Ueda,Toshiki; Koshigoe,Fumihiro; Sato,Fumihiro, Aluminum alloy composite for brazing and heat exchanger including the same.
이 특허를 인용한 특허 (4)
-
Kimura, Shimpei; Ueda, Toshiki; Izumi, Takahiro; Konishi, Haruyuki; Teramoto, Hayaki; Hakamata, Osamu; Yamamoto, Michiyasu, Aluminum alloy brazing sheet for heat exchanger.
-
Ando, Makoto; Murata, Takuya; Niikura, Akio, Aluminum-alloy clad material and production method therefor, and heat exchanger using said aluminum-alloy clad material and production method therefor.
-
Matsumoto, Katsushi; Kinefuchi, Masao; Izumi, Takahiro, Aluminum-alloy clad sheet.
-
Ando, Makoto; Yanagawa, Yutaka; Niikura, Akio, Cladded aluminum-alloy material and production method therefor, and heat exchanger using said cladded aluminum-alloy material and production method therefor.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.