| 摘要 |
A shaped, small diameter brazing preform is disclosed. The preform, with a cross- sectional diameter between 0.04 inches and 0.08 inches, comprises a continuous, uniform, cavity in a center of the preform extending along a length formed by three distinct and generally planar sides of the preform. An opening to the cavity along at least a portion of the cross section creating a gap comprises a flux positively retained within the cavity by a pressure from the three sides. A process of forming the - shaped, small diameter brazing preform comprises a generally flat and planar sheet metal section. A plurality of rollers, each one having a unique surface profile, forms the sheet metal section such that the sheet metal section is formed into a generally triangular shaped preform. The cavity is stuffed with a flux, which is exposed to an exterior of the cavity along the length of the preform. |
