Title:
SPIRAL SPRING AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH0913136
Kind Code:
A
Abstract:
To produce a spiral spring high in output torque and excellent in durability and corrosion resistance.
A wire rod obtd. by subjecting a Co-Ni base alloy having a compsn. contg., by weight, 30 to 40% Co, 27 to 36% Ni, 12 to 26% Cr, 8 to 13% Mo, respectively 0.1 to 3% of one or ≥two kinds among Mn, Ti, Al and Fe, 0.5 to 3% Nb and 0.005 to 0.05% misch metal with inevitable impurities to melting by vacuum melting and subjecting the same to cold wire drawing at 30 to 90% final working degree by a reverse tension wire drawing machine is worked into a spiral spring by using a material subjected to cold rolling and is thereafter subjected to aging treatment at 400 to 620°C in a vacuum or in a nonoxidizing atmosphere.
Inventors:
TAKAHASHI OSAMU
YOSHIDA KAZUO
OKAZAKI MASATO
YOSHIDA KAZUO
OKAZAKI MASATO
Application Number:
JP10291696A
Publication Date:
January 14, 1997
Filing Date:
April 24, 1996
Export Citation:
Assignee:
SEIKO INSTR INC
International Classes:
G04B1/14; C22C19/00; C22C30/00; C22F1/00; F16F1/02; F16F1/10; (IPC1-7): C22C19/00; F16F1/02; F16F1/10; G04B1/14
Attorney, Agent or Firm:
Keinosuke Hayashi
Next Patent: ALUMINUM ALLOY