SAMUEL T FURR
Engineers in Emmaus, PA
License number
Pennsylvania PE032110E
Category
Engineers
Type
Professional Engineer
Address
Address
Emmaus, PA 18049
Professional information
Method Of Reconditioning Welded Joints
US Patent:
4462533, Jul 31, 1984
Filed:
Jun 24, 1982
Appl. No.:
6/391738
Inventors:
Samuel T. Furr - Emmaus PA
Robert E. Bauer - Allentown PA
Robert E. Bauer - Allentown PA
Assignee:
Bethlehem Steel Corp. - Bethlehem PA
International Classification:
B23K 3100
US Classification:
228119
Abstract:
This invention relates to a combined method of welding and annealing an aluminum-zinc alloy coated ferrous wire, and restoring the corrosion resistant properties to the annealed areas of said wire. The aluminum-zinc coating consists of an alloy overlay and an intermetallic alloy layer, between said alloy overlay and the ferrous wire. The preferred method includes the steps of (1) upset welding two alloy coated steel wires, (2) annealing the weld joint, at a temperature between about 1200. degree. and about 1450. degree. F. whereby during such annealing the weld joint is subjected to brushing to remove said alloy overlay and to prevent the formation of oxides on said intermetallic alloy layer, (3) removing the burr formed during such welding, and (4) cooling. During said cooling, or alternatively by reheating to a maximum temperature where the aluminum-zinc alloy coating on the wire begins to melt, i. e. about 900. degree. F. (482. degree. C.