Document Type and Number:
Japanese Patent JPH0557686
Kind Code:
B2
Abstract:
The disclosed method forms a zinc sleeve on an insulator pin by dipping the insulator pin in molten zinc at about 450 DEG -650 DEG C. to heat and wet the insulator pin with the molten zinc, setting the hot and wetted insulator pin in a die having an open-top cavity in such a manner that an annular open-top molding cavity is defined around the insulator, the die being at about 50 DEG -300 DEG C. when receiving the insulator pin, pouring molten zinc in the annular molding cavity through its open top, and solidifying the zinc thus poured.
Inventors:
MATSUO HIROTO
KAWAMOTO GANJI
ISHIHARA MASAMICHI
NAKAGAWA TAKAAKI
KAWAMOTO GANJI
ISHIHARA MASAMICHI
NAKAGAWA TAKAAKI
Application Number:
JP2941988A
Publication Date:
August 24, 1993
Filing Date:
February 09, 1988
Export Citation:
Assignee:
NGK INSULATORS LTD
International Classes:
B22D19/00; C23C6/00; H01B17/02; H01B17/06; H01B19/00; (IPC1-7): H01B17/06; H01B19/00
Next Patent: CERAMIC GREEN SHEET PUNCHING TOOL