The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 14, 1989

Filed:

Mar. 09, 1987
Applicant:
Inventors:

Dieter Kunzmann, Taufkirchen, DE;

Helmut Pertler, Haar, DE;

Helmut Seidl, Vagen, DE;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
228194 ; 228248 ;
Abstract

Structural parts, particularly of complicated shape, are diffusion welded to each other under isostatic pressure to form permanent joints. A two phase operation is involved in the joint formation. In the first phase at least one of the welding joint forming surfaces of the two parts to be joined, is provided with a material which will form a metallurgical layer in the gap between the two surfaces forming the welding joint. The metallurgical layer forming material may be applied to one or both joint forming surfaces prior to assembly of the parts or the material may be introduced into the gap between the surfaces after the parts have been assembled. In both instances it is the aim to seal the gap prior to the second phase in which a diffusion welding is performed in a hot isostatic press.


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