Method of beam welding metallic parts together and apparatus for doing same
A method is described of welding an elongated metallic piece to one side of a metallic plate from the opposite other side of such plate, such method comprising the steps of temporarily clamping the elongated piece to such one side of the plate while leaving the opposite side of the plate exposed, the clamped piece and plate initially having an interface tracing an elongated path therebetween with interstices along the plate, providing a heat conductive heat sink material, and configuring such material to engage such piece, and such plate on the one side, each at locations proximate to but spaced from the interface, subjecting the other side of such plate to an electron welding beam, focused narrowly at and in registry opposite to the elongated clamped piece, moving the electron welding beam along the elongated path in opposite registry to the elongated clamped piece, the electron welding beam being supplied with adequate energy for penetrating through the plate, across the interface, and into the piece, whereby the electron welding beam produces molten material from the plate and piece at the interface, the heat sink material sufficiently cooling the plate and piece proximate to but not at the interface, and preventing thereby the molten material from extruding from the interface, but instead of filling the interstices and providing a welded joint substantially void of interstices.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4639571
- OSTI ID:
- 6874236
- Resource Relation:
- Patent File Date: Filed date 29 Nov 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method of beam welding metallic parts together and apparatus for doing same
Complete Status Report Documenting the Development of Friction Stir Welding for Producing a Butt Joint in Thin Wall Tubing of ODS Alloys
Related Subjects
ELECTRON BEAM WELDING
WELDING MACHINES
METALS
COOLING
ELONGATION
FASTENING
FOCUSING
HEAT SINKS
INTERSTITIALS
MACHINE PARTS
PLATES
SPACE DEPENDENCE
THERMAL CONDUCTIVITY
WELDED JOINTS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTS
FABRICATION
JOINING
JOINTS
PHYSICAL PROPERTIES
POINT DEFECTS
SINKS
THERMODYNAMIC PROPERTIES
WELDING
360101* - Metals & Alloys- Preparation & Fabrication