US 11,697,869 B2
Method for manufacturing a biocompatible wire
Heiko Specht, Hanau (DE); Sai Srikanth Golagani Venkata Kanaka, Singapore (SG); and Zhen Yun Liu, Singapore (SG)
Assigned to Heraeus Deutschland GmbH & Co. KG, Hanau (DE)
Filed by Heraeus Deutschland GmbH & Co. KG, Hanau (DE)
Filed on Jan. 22, 2020, as Appl. No. 16/749,495.
Prior Publication US 2021/0230728 A1, Jul. 29, 2021
Int. Cl. C22F 1/10 (2006.01); C21D 1/26 (2006.01); C21D 8/06 (2006.01); C22C 19/05 (2006.01); C22C 19/07 (2006.01); C22C 27/04 (2006.01); B21F 45/00 (2006.01); B21C 1/00 (2006.01); C21D 9/52 (2006.01)
CPC C22F 1/10 (2013.01) [B21C 1/003 (2013.01); B21F 45/008 (2013.01); C21D 1/26 (2013.01); C21D 8/06 (2013.01); C21D 9/525 (2013.01); C22C 19/05 (2013.01); C22C 19/07 (2013.01); C22C 27/04 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for manufacturing a biocompatible wire, comprising:
providing a workpiece of a biocompatible metallic material;
cold working the workpiece into a wire; and
annealing the wire;
wherein a cold work percentage is 97 to 99%;
wherein the cold working is a drawing with a die reduction per pass ratio in a range of 6 to 40%;
wherein the drawing is done with a Δ value deformation factor in a range of 1.2 to 2.0 and a contact length between the workpiece and a drawing tool in a range of 0.5 to 0.2 mm; and
wherein the annealing is done in a range of 850 to 1100° C.