Title:
コールドクルーシブル溶解炉
Document Type and Number:
Japanese Patent JP6908829
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cold crucible melting furnace having a hearth provided with magnetic flux induction mechanisms securely melting a solidified skull to realize stable tapping, further, to save power regarding the tapping, and simultaneously, to suppress the damage of the furnace side walls of the melting furnace, the additional structures thereof and the hearth.SOLUTION: A cold crucible melting furnace 1 has such a configuration that a hearth 2 composing the bottom part of the cold crucible melting furnace is made of an aggregate obtained by joining segments almost separately formed in a circumferential direction, and induction magnetic field fluxes from a coil 4 at the lower part are introduced into the upper part of the hearth via the released slits among the segments, and an intermediate slit(s) is provided, other than the slits among the segments, for guiding the fluxes generated at the coils 4 in the lower part to the upper part of the hearth, and further flux induction mechanisms 220a, 220b, 221a and 221b are provided concentrating the fluxes from the coils 4 located in positions exceeding the inner circumferences of furnace side walls 11 on the upper and central directions.SELECTED DRAWING: Figure 3
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Inventors:
Masanori Tsuda
Yonemushi Yu
Yasuhiro Nakai
Yonemushi Yu
Yasuhiro Nakai
Application Number:
JP2017089202A
Publication Date:
July 28, 2021
Filing Date:
April 28, 2017
Export Citation:
Assignee:
Sinfonia Technology Co., Ltd.
International Classes:
F27B14/14; F27B14/18; F27D3/14; F27D11/06
Domestic Patent References:
| JP2008545885A | ||||
| JP2009222364A | ||||
| JP10340779A | ||||
| JP2019505753A |
Foreign References:
| CN101776390A |
Attorney, Agent or Firm:
Masanori Onishi