Invention Grant
- Patent Title: Aluminum alloy for heat exchanger fins
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Application No.: US17656793Application Date: 2022-03-28
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Publication No.: US11933553B2Publication Date: 2024-03-19
- Inventor: Kevin Michael Gatenby , Hany Ahmed , Andrew D. Howells , Jyothi Kadali , Derek Aluia , John Michael Baciak, III
- Applicant: NOVELIS INC. , Denso Corporation
- Applicant Address: US GA Atlanta
- Assignee: NOVELIS INC.,DENSO CORPORATION
- Current Assignee: NOVELIS INC.,DENSO CORPORATION
- Current Assignee Address: US GA Atlanta; JP Aichi
- Agency: Kilpatrick Townsend & Stockton LLP
- The original application number of the division: US14816280 2015.08.03
- Main IPC: C22F1/04
- IPC: C22F1/04 ; B22D21/04 ; B23K1/00 ; C22C21/00 ; C22C21/02 ; C22C21/10 ; C22F1/043 ; C22F1/053 ; F28F21/08

Abstract:
An aluminum alloy fin stock material comprising about 0.9-1.2 wt. % Si, 0.3-0.5 wt. % Fe, 0.20-0.40 wt. % Cu, 1.0-1.5 wt. % Mn, 0-0.1% Mg and 0.0-3.0% Zn, with remainder Al and impurities at ≤0.15 wt. %. The aluminum alloy fin stock material is produced in a form of a sheet by a process comprising the steps of direct chill casting an ingot, hot rolling the ingot after the direct chill casting, cold rolling the aluminum alloy to an intermediate thickness, inter-annealing the aluminum alloy cold rolled to an intermediate thickness at a temperature between 200 and 400° C., and cold rolling the material after inter-annealing to achieve % cold work (% CW) of 20 to 40%. The aluminum alloy fin stock material possesses an improved combination of one or more of pre- and/or post-brazes strength, conductivity, sag resistance and corrosion potential. It is useful for fabrication of heat exchanger fins.
Public/Granted literature
- US20220221236A1 ALUMINUM ALLOY FOR HEAT EXCHANGER FINS Public/Granted day:2022-07-14
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