发明名称 |
METHOD OF MAKING A HEAT EXCHANGER |
摘要 |
Potential difficulties with corrosion resistance in air cooled condensers utilizing aluminum fins are avoided by using fin and tube constructions made by a method which includes the steps of providing a flattened tube (50) of ferrous material (80) and having an exterior coating (82) predominantly of aluminum; providing at least one serpentine fin (56) of aluminum (86) and clad with a predominantly aluminum braze cladding (88); assembling (102) the fin (56) to the flattened tube (50); applying (94), (100), (104), a brazing flux to at least one of the fin (56) and the tube (50); raising (106) the temperature of the assembly to a level sufficient to at least partially melt the braze cladding (88); and maintaining the temperature for a sufficient Period of time to achieve a brazed joint (60) between the fin (56) and the tube (50) but a time insufficient to convert the coating (82) and the cladding (88) to ferrous-aluminum intermetallic compound or intermediate phase. |
申请公布号 |
ZA9006101(B) |
申请公布日期 |
1992.01.29 |
申请号 |
ZA19900006101 |
申请日期 |
1990.08.02 |
申请人 |
MODINE MANUFACTURING COMPANY |
发明人 |
ANDREW JOHN COTTONE;ZALMAN PHILIP SAPERSTEIN |
分类号 |
B23K1/00;B23K1/19;B23K1/20;B23K35/00;B23K101/08;B23K103/02;F28D1/053;F28F1/12;F28F13/12;F28F19/02;F28F19/06 |
主分类号 |
B23K1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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