| 摘要 |
A header for an automotive air conditioner evaporator is made from a cut-off length of a cylindrical aluminum tube (10), one end of which is clamped on a cylindrical arbor (11) so that a header region (20) of the tube can be pressed into a generally rectangular shape in a channel-shaped forming tool (15). While confined within the forming tool, a forming arbor (25) having a generally rectangular cross-sectional shape is pressed into header region (20) to conform the header region to the shape of forming arbor (25) and the confines of forming tool (15).
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