Megastir Technologies LLC

Steve W Larsen

Scott M Packer

Russell J Steel

Jonathan A Babb

Paul T Higgins

David Rosal

Jeremy Peterson

Samuel C Sanderson

A system and method for modifying a work piece surface of high melting temperature materials such as Advanced High Strength Steels, wherein a friction stir welding tool may include cutting elements located on the outside diameter of a collar assembly, wherein the collar assembly may be retrofitted for existing friction stir welding tools, or may be designed as a custom attachment for a new hybrid friction stir welding tool, wherein the surface of the work piece may be modified by removing detrimental flash and burr created during operation of the friction stir welding tool.

Material surface modification using friction stir welding hybrid process

A mandrel that provides a counter-force to the pressure exerted on the outside of a pipe or other arcuate surface by a friction stir welding tool, wherein the mandrel is expandable through the use of a wedge, and wherein the mandrel enables multiple friction stir welding heads to simultaneously perform welding on the arcuate surface.

Expandable mandrel for use in friction stir welding

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Payson, UT, United States of America

Steve W Larsen