Method of forming a header assembly

Details Method of forming a header assembly Method of forming a header assembly

B - Operations, Transporting

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P

26/145

B23P 15/26 (2006.01) B21C 37/29 (2006.01) B21K 23/00 (2006.01) F28D 7/00 (2006.01) F28F 1/00 (2006.01) F28F 9/02 (2006.01)

Patent

CA 1052988

ABSTRACT OF THE DISCLOSURE A method is disclosed of forming a header assembly in which a plurality of tubes transition into a single header passage. The method includes forming a blank extrusion com- prised of a plurality of juxtaposed tube elements intercon- nected by web sections of a thickness approximately double the wall thickness of the individual tube members in the blank. The blank is placed in a female die and a wedge-shaped male forming tool is advanced into the blank for a portion of the length of the blank, the male forming tool being configured to split the interior of the blank along the center of the web sections as the tool advances thereinto, forcing the web sections and connected tube portions apart and into contact with the wall of the female die cavity to form the header section. Further forming steps are disclosed including a severing of the web sections interconnecting the tubes along the remainder of the length of the blank, as well as appropriate reshaping of the header section subsequent to the initial forming operation in order to configure the same to the particular application for which the header assembly is to be used.

276852

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