Title:
DRAWING OF TUNGSTEN OR MOLYBDENUM WIRE
Document Type and Number:
Japanese Patent JPS5840395
Kind Code:
A
Abstract:
PURPOSE: To obtain in a high yield a W or Mo wire free of defects such as crack or cut, by coating the surface of a rod obtd. by forging sintered W or Mo with a graphite suspension of a specified viscosity followed by wire drawing.
CONSTITUTION: The surface of a W or Mo rod of diameter 1W3mm obtd. by forging a pillar-like sintered body obtd. by molding and sintering a W or Mo powder, is coated with a graphite suspension of viscosity 10W120cP at normal temp. prepd. by suspending a graphite powder and, if necessary, adding a dispersant such as methylcellulose, a binder such as sugar or a pH adjustor such as ammonia to water and/or an org. solvent, and said rod is subjected to wire drawing at a drawing rate of 6W15m/sec.
Inventors:
ITOU MASAMI
Application Number:
JP13783381A
Publication Date:
March 09, 1983
Filing Date:
September 03, 1981
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
C10M173/02; B21C9/00; C10M103/02; C10M169/04; C10M173/00; C10N20/02; C10N40/24; C10N50/02; C10N50/08; (IPC1-7): B21C9/00; C10M3/02; C10M7/04
Attorney, Agent or Firm:
Hajime Tsukuni