发明名称 |
Method of making finned tubes |
摘要 |
In a method of making finned tubes as components of air-cooled systems or condensers, a sheet metal strip of aluminum is first shaped into a waved finned structure with plural fins in parallel relationship and arched ends for connecting the fins, thereby defining crests on opposite ends of the finned structure. A fluxing agent of cesium-aluminum tetrafluoride is applied in lines onto the crests on at least one of the ends of the finned structure. The finned structure is then placed upon a broad side of a flat steel tube coated with a zinc/aluminum alloy. The finned structure and the flat tube are subsequently joined in a brazing furnace in the presence of an inert gas at a temperature between 370° C. and 470° C. to produce a unitary structure which is then allowed to cool down at room temperature.
|
申请公布号 |
US2004149811(A1) |
申请公布日期 |
2004.08.05 |
申请号 |
US20030738247 |
申请日期 |
2003.12.16 |
申请人 |
GEA ENERGIETECHNIK GMBH |
发明人 |
KORISCHEM BENEDICT;DINULESCU HORIA;WITTE RAIMUND;VOLKMER ECKARD |
分类号 |
B23K1/00;(IPC1-7):B23K31/02 |
主分类号 |
B23K1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|