| 摘要 |
The invention relates to a method of making a metallic strip-type composite article adapted for expansion by the application of internal pressure to provide a plurality of tubular passageways therein. This method comprises providing a pattern of weld inhibiting or stop-weld material between two superimposed strips of metal and pressure welding these strips together so that the adjacent areas of the strips which are not separated by the stop weld material become bonded together, forming the composite article. The outer surfaces of these two metal strips are provided with a clad layer of brazing alloy. At any suitable time after the bonding, the areas defined by the pattern of weld inhibiting or stop-weld material may be expanded in the composite article to form multi-holed strip-type tubing clad with brazing alloy. The novel multi-holed strip-type tubing clad with brazing alloy can be used for producing heat exchanger assemblies and other products in which a brazed form of construction is used. |
