High-strength aluminum alloy fin material and production method thereof
US10280495B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 4, 2013 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Oct 9, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2275/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum alloy fin material for heat exchanger use having a 35 to 50 μm thickness, a small springback at the time of corrugation, a suitable strength before brazing enabling easy fin formation, a high strength after brazing, and excellent erosion resistance, self corrosion resistance, and sacrificial anodic effect and a method of production of the same are provided. A fin material containing, by mass %, Si: 0.9 to 1.2%, Fe: 0.8 to 1.1%, Mn: 1.1 to 1.4%, and Zn: 0.9 to 1.1%, further limiting the impurity Mg to 0.05% or less, Cu to 0.03% or less, and ([Si]+[Fe]+2[Mn])/3 to 1.4% to 1.6%, and having a balance of unavoidable impurities and Al. A method of production prescribing hot rolling, cold rolling, intermediate annealing, and final cold rolling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.