Title:
ELECTRODE LIFTING CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2023167795
Kind Code:
A
Abstract:
To provide an electrode lifting control device which optimizes the efficiency of dissolution of scrap.SOLUTION: An electrode lifting control device comprises: impedance deviation calculation means which calculates an impedance deviation by subtracting a previously set reference impedance from a calculated actual measurement impedance on the basis of the arc current and arc voltage; and inverter target speed setting means which outputs a speed reference to an inverter that drives a motor for lifting/lowering an electrode on the basis of operation speed reference characteristics expressing the speed reference of the lifting/lowering speed of the electrode with respect to the impedance deviation. In the operation speed reference characteristics, the operation speed reference becomes 0 when the impedance deviation is 0, and the operation speed reference is not 0 and the inclination of the operation speed reference with respect to the impedance deviation is equal to or greater than 0 when the impedance deviation is not 0.SELECTED DRAWING: Figure 1
Inventors:
KANEKO TOKUO
Application Number:
JP2022079261A
Publication Date:
November 24, 2023
Filing Date:
May 13, 2022
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND
International Classes:
F27B3/28; H05B7/152; F27D11/10
Attorney, Agent or Firm:
Masahiko Hyugaji
Junichi Kozaki
Hiroshi Ichikawa
Takato Uchida
Junichi Kozaki
Hiroshi Ichikawa
Takato Uchida