Butterfly-type shim having perforations in mid-section thereof and double sandwich braze joint produced therewith

摘要: Formation of a double sandwich braze joint between the steel body bit and carbide insert tip disposed in groove formed across is facilitated by butterfly-type shim having an array perforations defined through its bottom wall side walls generally mid-section region shim. The also has opposite end regions where are solid free perforations. surfaces such that containing adjacent central perforation-free opoposite tip. allow flow greater amounts to corresponding than thereof so produced body, nonuniform with respect thickness joint. thicker at thinner