US 12,447,518 B2
Method for forming hollow profile non-circular extrusions using shear assisted processing and extrusion (ShAPE)
Vineet V. Joshi, Richland, WA (US); Scott A. Whalen, West Richland, WA (US); Curt A. Lavender, Richland, WA (US); Glenn J. Grant, Benton City, WA (US); Md. Reza-E-Rabby, Richland, WA (US); Aashish Rohatgi, Richland, WA (US); and Jens T. Darsell, West Richland, WA (US)
Assigned to Battelle Memorial Institute, Richland, WA (US)
Filed by Battelle Memorial Institute, Richland, WA (US)
Filed on Nov. 11, 2022, as Appl. No. 17/985,611.
Application 17/175,464 is a division of application No. 16/028,173, filed on Jul. 5, 2018, granted, now 11,045,851, issued on Jun. 29, 2021.
Application 17/985,611 is a continuation of application No. 17/175,464, filed on Feb. 12, 2021, granted, now 11,534,811.
Application 16/028,173 is a continuation in part of application No. 15/898,515, filed on Feb. 17, 2018, granted, now 10,695,811, issued on Jun. 30, 2020.
Application 15/898,515 is a continuation in part of application No. 15/351,201, filed on Nov. 14, 2016, granted, now 10,189,063, issued on Jan. 29, 2019.
Application 15/351,201 is a continuation in part of application No. 14/222,468, filed on Mar. 21, 2014, abandoned.
Claims priority of provisional application 62/460,227, filed on Feb. 17, 2017.
Claims priority of provisional application 62/313,500, filed on Mar. 25, 2016.
Claims priority of provisional application 61/804,560, filed on Mar. 22, 2013.
Prior Publication US 2023/0081786 A1, Mar. 16, 2023
Int. Cl. B21C 25/02 (2006.01); B21C 23/00 (2006.01); B21C 23/08 (2006.01); B21C 23/14 (2006.01); B21C 23/21 (2006.01); B21C 27/00 (2006.01); B21C 29/00 (2006.01); B21C 33/00 (2006.01); B21C 37/15 (2006.01); B22F 3/20 (2006.01); C22C 1/04 (2023.01)
CPC B21C 25/02 (2013.01) [B21C 23/002 (2013.01); B21C 23/08 (2013.01); B21C 23/142 (2013.01); B21C 23/218 (2013.01); B21C 27/00 (2013.01); B21C 29/003 (2013.01); B21C 33/00 (2013.01); B21C 23/215 (2013.01); B21C 37/155 (2013.01); B22F 2003/208 (2013.01); B22F 2301/058 (2013.01); C22C 1/0408 (2013.01); C22C 1/0416 (2013.01); C22C 1/0425 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A shear assisted extrusion process comprising;
providing both axial and rotational forces between feedstock material in a container comprising a die cavity and a scroll-faced-die to plasticize one end of the feedstock material and provide plasticized feedstock material through at least one opening in the scroll-faced-die and over a mandrel coupled to the scroll-faced-die to form a hollow extrudate,
wherein:
the feedstock material comprises crushed material fragments comprising chunks, powder, or flakes, or combinations thereof; and
a scroll-face of the scroll-faced-die defines spirals as channels or ridges upon the scroll-face to direct the plasticized feedstock material through the at least one opening in the scroll-faced-die;
wherein the scroll-face is oriented generally perpendicular to a direction of an axial force imparted by the scroll-faced-die against the feedstock material or vice versa.