Making of a wave guide
AssigneeKabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft
InventorsPaul Schabernack, Wolfgang VON Jan
Life of this patent
Estimating the term…
Abstract
A method of making a wave guide by electrolytically depositing copper on a mandrel is improved by using, e.g., a nickel steel mandrel having a thermal coefficient of expansion about one-tenth or less of that of copper. After plating, the assembly is heated so that the copper tube separates from the mandrel without sticking, and can be taken off without exercise of undue force, which could damage mandrel or tube.
Claims6
In a method for making a wave guide of cylindrical inner surface of accurate cross-section by means of electrolytically depositing material on a mandrel for forming a tube thereon to be removed from the mandrel, the improvement comprising:
- using a mandrel made of steel having 33 to 38% nickel for having a coefficient of thermal expansion sufficiently smaller than the coefficient of thermal expansion of the material as deposited on the mandrel;
- disposing the mandrel in a vertical disposition during the depositing;
- and
- heating the tube as made subsequently to the electrolytic depositing until the mandrel separates completely from the tube permitting removal of the mandrel from the interior of the tube.
Dependencies are inferred from the claim text.