The production of pieces of wall thickness is not uniform and the workpiece thus obtained

摘要

A fabricated article, including a portion of non-uniform sectional thickness, is provided through an improved method employing a plurality of cooperating, particularly shaped and sized sheet metal members or member portions which, in an article including a cavity, generally define selected inner and outer surfaces of the article. Also employed is at least one particularly shaped and sized insert member to provide increased sectional thickness in a selected portion. The sheet metal members or member portions and the insert member are assembled at bonding surfaces so that the sheet metal members or member portions retain the insert between them. Thereafter, the assembly is fabricated into the article by solid state diffusion bonding at the bonding surfaces.