Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTRODE FOR GENERATING PLASMA ARC AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH07185825
Kind Code:
A
Abstract:

PURPOSE: To provide an electrode for plasma arc generation which is less consumed at the time of initial arc start and a process for production of this electrode.

CONSTITUTION: This electrode is constituted by mounting an electrode part 12 consisting of halfnium or zirconium at a main body 9 consisting of a highly thermally conductive material and forming a nitrogen compd. layer of the halfnium or zirconium or a layer consisting of a nitrogen compd. and an oxygen compd. on an arc generating surface 13 of this electrode part 12. A heat energy beam is condensed and cast to the arc generating surface 13 of this electrode part 12 in an atmosphere of gaseous nitrogen or a gaseous mixture composed of oxygen and nitrogen.


Inventors:
NAGATA YOZO
YAMAMOTO FUJIO
Application Number:
JP33833993A
Publication Date:
July 25, 1995
Filing Date:
December 28, 1993
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TANAKA SEISAKUSHO KK
International Classes:
H05H1/34; B23K10/00; (IPC1-7): B23K10/00; H05H1/34
Attorney, Agent or Firm:
Masatake Shiga (2 outside)