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Title:
真空アーク炉における電極ギャップの閉ループ制御のための方法および装置
Document Type and Number:
Japanese Patent JP2014502004
Kind Code:
A
Abstract:
A method and a device for closed-loop control of an electrode gap in a vacuum arc furnace subjects an electrode gap of a melting electrode from the surface of a melt material to closed-loop control as a function of a droplet short-circuit rate. For this purpose, a histogram of detected droplet short-circuits is created on the basis of at least one droplet short-circuit criterion. The histogram is subdivided into sub-areas, a characteristic sub-area of the histogram is selected for closed-loop control purposes. The electrode gap is subjected to closed-loop control on the basis of the droplet short-circuits which can be associated with the selected sub-area.

Inventors:
Ralph
Holz, holz
Hoffman, Frank-Berner
Application Number:
JP2013534244A
Publication Date:
January 23, 2014
Filing Date:
October 06, 2011
Export Citation:
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Assignee:
ALD Vacuum Technologies GmbH
International Classes:
H05B7/148; F27D11/08; C22B9/20
Domestic Patent References:
JPH0869877A1996-03-12
JPS63502785A1988-10-13
JPH0254892A1990-02-23
Attorney, Agent or Firm:
Fukami patent office