Title:
METHOD FOR IMPROVING DETERMINATION ACCURACY OF MELT DOWN IN DC ELECTRIC FURNACE
Document Type and Number:
WIPO Patent Application WO/2023/054758
Kind Code:
A1
Abstract:
The present invention relates to a method for determining melt down in a DC electric furnace, and comprises: a skilled person experience melt down time point suggestion step of transmitting and receiving a measurement signal at a point in time of determining melt down according to the skill level of a worker in a DC electric furnace; a current voltage measurement step of providing a stability function by measuring a current and voltage through an amount of power consumed; a set current voltage accumulated power amount transmission and reception step of transmitting and receiving an accumulated amount of power consumed as a PLC signal through a set current and voltage; a basic data signal input step of providing basic details of the DC electric furnace; a melt down determination step of determining melt down through transmitted and received data and basic data; a variable modification step of modifying variables being generated, through data measured in the melt down determination step; and a melt down determination time output step of outputting measured data and time determined in the melt down determination step. Therefore, the present invention has the effects of: stabilizing noise and vibration due to an unstable arc as well as stabilizing power, by measuring dynamic impedance required during operation of a DC electric furnace; significantly reducing an amount of power by stabilizing power; significantly reducing T-T from scrap charging to molten steel tapping; most reliably determining melt down; significantly improving the determination accuracy of melt down by quantitatively calculating a thermal image vision to accurately determine melt down; and identifying a state of melt down in real time.
Inventors:
LEE WANG HA (KR)
PARK JUNG HYUK (KR)
KIM CHUL HO (KR)
PARK JUNG HYUK (KR)
KIM CHUL HO (KR)
Application Number:
PCT/KR2021/013412
Publication Date:
April 06, 2023
Filing Date:
September 30, 2021
Export Citation:
Assignee:
ABLEMAX INC CO LTD (KR)
International Classes:
F27D21/04; F27D19/00; F27D21/00
Foreign References:
| KR20200110496A | 2020-09-24 | |||
| KR102225816B1 | 2021-03-10 | |||
| KR20010002439A | 2001-01-15 | |||
| JP2008196722A | 2008-08-28 | |||
| US20130000445A1 | 2013-01-03 |
Attorney, Agent or Firm:
YOON, Hyoung Geun (KR)
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