Abstract: A system and method for friction stir processing of a hand-held cutting edge, wherein friction stir processing techniques are used to modify the properties of the hand-held cutting edge to obtain superior edge retention and superior resistance to chipping of the hand-held cutting edge.
Abstract: A tool is provided that is capable of friction stir processing, friction stir mixing, and friction stir welding of high melting temperature and low melting temperature materials, wherein the collar is now divided into at least an inner and an outer collar coupled to the shank and the FSW tip, wherein new thermal barriers enable expansion of the inner collar to be directed inward to thereby create compression on the FSW tip instead of allowing the FSW tip to become loose in the tool at elevated temperatures.
Type:
Grant
Filed:
August 11, 2009
Date of Patent:
August 14, 2012
Assignee:
Megastir Technologies LLC
Inventors:
David Rosal, Scott M. Packer, Russell J. Steel, Peter Cariveau, John Williams, Lance Richman
Abstract: A system and method for friction stir processing of a hand-held cutting edge, wherein friction stir processing techniques are used to modify the properties of the hand-held cutting edge to obtain superior edge retention and superior resistance to chipping of the hand-held cutting edge.
Type:
Grant
Filed:
March 24, 2005
Date of Patent:
May 29, 2012
Assignee:
Megastir Technologies, LLC
Inventors:
Charles E. Allen, Richard A. Flak, Scott M. Packer, Russell J. Steel, Hobie Smith
Abstract: A friction stir tool is provided to perform friction stir riveting using a partially consumable pin, wherein the pin includes a cutting edge on a bottom surface thereof, wherein the tool is rotated at a first speed to enable cutting by the pin into a first material that is overlapping a second material, wherein after the pin has cut to a sufficient depth, the rotational speed of the tool is increased to thereby enable plasticization of the consumable pin, the first material, and the second material, wherein the tool is then rapidly decelerated until stopped, enabling diffusion bonding between the pin, the first material and the second material.
Type:
Grant
Filed:
December 7, 2010
Date of Patent:
April 17, 2012
Assignees:
Brigham Young University, Megastir Technologies, LLC
Inventors:
Scott M. Packer, Russell J Steel, Jonathan A. Babb, Michael P. Miles, Kent Kohkonen
Abstract: 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.
Type:
Grant
Filed:
January 26, 2010
Date of Patent:
November 15, 2011
Assignee:
Megastir Technologies
Inventors:
Scott M. Packer, Jonathan A. Babb, Russell J. Steel, Monte Russell
Abstract: A probe for friction stir welding MMCs, ferrous alloys, non-ferrous alloys, and superalloys, as well as non-ferrous alloys, the probe including a shank, a shoulder, and a pin disposed through the shoulder and into the shank, wherein the pin and the shoulder at least include a coating comprised of a superabrasive material, the pin and shoulder being designed to reduce stress risers, disposing a collar around a portion of the shoulder and the shank to thereby prevent movement of the shoulder relative to the shank, and incorporating thermal management by providing a thermal flow barrier between the shoulder and the shank, and between the collar and the tool.
Type:
Grant
Filed:
February 16, 2010
Date of Patent:
August 9, 2011
Assignee:
Megastir Technologies, LLC
Inventors:
Tracy W. Nelson, Carl D. Sorensen, Scott Packer, Paul Allen Felter
Abstract: A method of selecting a geometry for a friction stirring tool, said tool having a melting point that is higher than the workpiece material, wherein the tool is placed in motion against the workpiece to generate heat in the workpiece such that workpiece material is transported in surface features of the tool, and wherein surface features manage workpiece material flow around the tool, and wherein the tool can be used in friction stir processing, friction stir mixing, friction stir welding, and friction stir spot welding of high melting temperature materials or high softening temperature materials.
Abstract: A friction stir tool is provided to perform friction stir riveting using a partially consumable pin, wherein the pin includes a cutting edge on a bottom surface thereof, wherein the tool is rotated at a first speed to enable cutting by the pin into a first material that is overlapping a second material, wherein after the pin has cut to a sufficient depth, the rotational speed of the tool is increased to thereby enable plasticization of the consumable pin, the first material, and the second material, wherein the tool is then rapidly decelerated until stopped, enabling diffusion bonding between the pin, the first material and the second material.
Type:
Application
Filed:
December 7, 2010
Publication date:
March 31, 2011
Applicants:
Brigham Young University, MegaStir Technologies, LLC
Inventors:
Scott M. Packer, Russell J. Steel, Jonathan A. Babb, Michael P. Miles, Kent Kohkonen
Abstract: A new control variable is introduced, that when combined with previous dependent control criteria on other variables results in a control program that can create a superior weld while minimizing wear on the FSW tool, wherein the tool repeatedly experiences the same thermal and mechanical loading within specified control windows during every repeated weld sequence because flow stresses and tool loads are driven by temperature, and dependent control loops account for differences in material and heat that is transferred at different rates in varying locations throughout a friction stir weld.
Type:
Grant
Filed:
August 11, 2009
Date of Patent:
March 22, 2011
Assignee:
Megastir Technologies LLC
Inventors:
Jonathan A. Babb, Russell Steel, Scott M. Packer, John Williams
Abstract: A friction stir tool is provided to perform friction stir riveting using a partially consumable pin, wherein the pin includes a cutting edge on a bottom surface thereof, wherein the tool is rotated at a first speed to enable cutting by the pin into a first material that is overlapping a second material, wherein after the pin has cut to a sufficient depth, the rotational speed of the tool is increased to thereby enable plasticization of the consumable pin, the first material, and the second material, wherein the tool is then rapidly decelerated until stopped, enabling diffusion bonding between the pin, the first material and the second material.
Type:
Grant
Filed:
June 13, 2007
Date of Patent:
December 7, 2010
Assignees:
Brigham Young University, Megastir Technologies, LLC
Inventors:
Scott M. Packer, Russell Steel, Jonathan A. Babb, Michael P. Miles, Kent Kohkonen