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Patent Searching and Data


Title:
MANUFACTURE OF TITANIUM RING FOR ELECTRODEPOSITION DRUM
Document Type and Number:
Japanese Patent JPH03169445
Kind Code:
A
Abstract:

PURPOSE: To mass-produce a titanium ring for electrodeposition drum having good surface characteristic and high circularity under good workability by executing specific ring rolling to reduction ratio and outer diameter expanding velocity of a titanium raw material heated at the specific temp.

CONSTITUTION: The pierced titanium raw material 1 (pure titanium or titanium alloy raw material) heated at <700°C is rolled to expand the hole under condition of ≥30% reduction radio per one heat and ≤8m/sec outer diameter expanding velocity by using a main roll 5, mandrel roll 6, an axial roll 7 and centering rolls 8, 8'. By this method, the seamless titanium ring for electrodeposition drum having sufficiently fine and uniform crystalline grains and high circularity is stably manufactured under excellent working efficiency.


Inventors:
Kanie, Makoto
Nanba, Harumi
Application Number:
JP1989000308860
Publication Date:
July 23, 1991
Filing Date:
November 28, 1989
Export Citation:
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Assignee:
NIPPON STAINLESS STEEL CO LTD
International Classes:
B21B19/14; B21H1/06; C22F1/18; C25D13/00; (IPC1-7): B21B19/14; B21H1/06; C25D13/00