초록 ▼

Surprisingly, silver-copper-palladium brazing alloys, which have hitherto been used only for the brazing of components of the same material, are also very well suited for brazing directly titanium to stainless steel if, the latter component clasps the titanium component tightly, so that the cold joi

Surprisingly, silver-copper-palladium brazing alloys, which have hitherto been used only for the brazing of components of the same material, are also very well suited for brazing directly titanium to stainless steel if, the latter component clasps the titanium component tightly, so that the cold joint is under constant compressive stress. In a method for forming the titanium-steel compound the titanium component is provided with a cylindrical end which has a smaller out-side diameter than an adjacent main portion whose external surface is a first surface to be brazed. The cylindrical steel component is a sleeve whose inside diameter is equal to the outside diameter of the main portion and whose internal surface is a second surface to be brazed. A silver-copper-palladium brazing alloy is placed around the end of the titanium component. The steel sleeve is slipped thereover. The whole is heated in a vacuum or an inert gas until the silver-copper-palladium brazing alloy melts and wets the surfaces to be brazed, and is then allowed to cool down.

대표청구항 ▼

[ What is claimed is:] [1.] A method for forming a compound arrangement by brazing a first component of titanium to a second component of unplated stainless steel using silver-copper-palladium brazing alloys, whereinthe first component of titanium is provided with a cylindrical first endwhich has a

[ What is claimed is:] [1.] A method for forming a compound arrangement by brazing a first component of titanium to a second component of unplated stainless steel using silver-copper-palladium brazing alloys, whereinthe first component of titanium is provided with a cylindrical first endwhich has a smaller outside diameter than an adjacent main portionwhose external surface is, at least in part, a first surface to be brazed;the second component is a cylindrical steel sleevewhose inside diameter is equal to the outside diameter of the main portion of the first component andwhose internal surface is, at least in part, a second surface to be brazed the second surface being unplated stainless steel;a silver-copper-palladium brazing alloy is placed around the first end of the first component;the steel sleeve is slipped over the main portion of the first component;the first and second components and the silver-copper-palladium brazing alloy are heated in a vacuum or an inert gas until the silver-copper-palladium brazing alloy melts and wets the surface to be brazed; andthe first and second components and the brazing alloy are then cooled so that the steel sleeve exerts compressive stress on the first surface of titanium and is brazed directly to the first surface of titanium;whereby the compound arrangement is formed.