发明名称 |
Aluminum alloy fin material for heat exchanger and method of production of same and method of production of heat exchanger by brazing fin material |
摘要 |
An aluminum alloy fin material for a heat exchanger having suitable strength before brazing enabling easy fin formation, having high strength after brazing, having a high thermal conductivity (electrical conductivity) after brazing, and having superior sag resistance, erosion resistance, self corrosion prevention, and sacrificial anode effect, a method of production of the same, and a method of production of a heat exchanger using the fin material are provided, that is, an aluminum alloy fin material having a chemical composition of Si: 0.7 to 1.4 wt %, Fe: 0.5 to 1.4 wt %, Mn: 0.7 to 1.4 wt %, and Zn: 0.5 to 2.5 wt %, Mg as an impurity limited to 0.05 wt % or less, and the balance of unavoidable impurities and Al, and having a tensile strength after brazing of 130 MPa or more, a yield strength after brazing of 45 MPa or more, a recrystallized grain size after brazing of 500 μm or more, and an electrical conductivity after brazing of 47% IACS or more, a method of producing an aluminum alloy fin material comprising cold rolling/annealing/cold rolling/annealing/cold rolling a thin slab continuously cast by a twin-belt system from a melt of the above composition under predetermined conditions, and a method of production of a heat exchanger comprising cooling the fin material at a predetermined rate after brazing heating. |
申请公布号 |
US8999083(B2) |
申请公布日期 |
2015.04.07 |
申请号 |
US200712375798 |
申请日期 |
2007.06.08 |
申请人 |
Nippon Light Metal Company, Ltd. |
发明人 |
Suzuki Hideki;Sasaki Tomohiro;Nagasawa Masae;Takahashi Nobuki |
分类号 |
C21D9/08;C22F1/04;B22D17/00;C22C21/06;C22C21/00;B32B15/01;C22C21/10;C22F1/00;C22F1/053 |
主分类号 |
C21D9/08 |
代理机构 |
Millen, White, Zelano & Branigan, P.C. |
代理人 |
Millen, White, Zelano & Branigan, P.C. |
主权项 |
1. An aluminum alloy fin material for a heat exchanger comprising
Si: 0.7 to 1.4 wt %, Fe: 0.80 to less than 1.20 wt %, Mn: 0.8 to 1.3 wt %, Zn: 0.5 to 2.5 wt %, Mg limited to 0.05 wt % or less, and the balance of unavoidable impurities and Al, and having a tensile strength after brazing of 130 MPa or more, a yield strength after brazing of 45 MPa or more, a recrystallized grain size after brazing of 2200 μm or more, and an electrical conductivity after brazing of 47% IACS or more, and wherein said aluminum alloy fin material has undergone brazing. |
地址 |
Tokyo JP |