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Title:
MANUFACTURE OF TITANIUM STOCK EXCELLENT IN WORKABILITY
Document Type and Number:
Japanese Patent JPH01234551
Kind Code:
A
Abstract:

PURPOSE: To easily manufacture a titanium stock free from the occurrence of cracks, etc., and excellent in workability at a low cost by cold-rolling a titanium stock, applying pickling or grinding to the above to remove the surface layer by a proper quantity, and then carrying out specific heat treatment.

CONSTITUTION: After a titanium stock is cold-rolled, the titanium surface layer is removed by ≥0.2μm by means of pickling or grinding, by which rolling oil burnt on the surface layer is removed. Subsequently, the titanium rolled stock is heat-treated at 400W<885°C. By this method, the formation of a hardened layer of TiC, TiN, TiCN, etc., on the surface is prevented and the titanium stock work-hardened by cold rolling is recrystallized. The resulting titanium stock is free from the occurrence of cracks, etc., at the time of bending and, as a result, workability can be improved.


Inventors:
TAKI CHIHIRO
MITSUYOSHI YASUHIRO
SHINRAKI TAKESHI
Application Number:
JP6084388A
Publication Date:
September 19, 1989
Filing Date:
March 15, 1988
Export Citation:
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Assignee:
NIPPON MINING CO
International Classes:
C22F1/18; C22F1/00; (IPC1-7): C22F1/18
Domestic Patent References:
JPS60238465A1985-11-27
JPS62284059A1987-12-09
JPS62284056A1987-12-09