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US 5,022,581 AGranted
Welding parts having different thermal expansions
AssigneeProductech Inc.
InventorGero Zimmer
Life of this patent
Estimating the term…
Abstract
The thermal expansion of parts to be welded to each other is reduced in that one or more of the parts are modified to include expansion slots in the welding area. This limits thermal expansion to the remaining small areas only which are allowed to expand within the slots. Total expansion of such welded parts is thus reduced after solidfication. In most applications, such slots do not effect the total design of the welded parts. If required, such slots can be sealed after welding.
Claims13
A method of joining one part to another at a joining line extending along joining edges of the parts to be joined, comprising:
- forming a plurality of mechanical slots in the joining edge of at least one part, each slot extending at substantially 90 degrees to the joining line from an outer end of the slot at the joining edge, to an inner end of the slot spaced from the joining edge;
- heating the parts adjacent the joining edges thereof to initiate joining of the joining edges;
- and
- allowing the joining edges to cool to form the joining line, expanded material of at least one part extending into the slots and the joining line extending across at least some of the slots at the outer ends thereof.
1 more element
Dependencies are inferred from the claim text.