(19)
(11) EP 2 581 151 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
19.06.2013 Bulletin 2013/25

(88) Date of publication A3:
17.04.2013 Bulletin 2013/16

(43) Date of publication:
17.04.2013 Bulletin 2013/16

(21) Application number: 11792115.5

(22) Date of filing: 01.06.2011
(51) International Patent Classification (IPC): 
B22D 27/02(2006.01)
F27D 11/08(2006.01)
 B22D 23/06(2006.01)
(86) International application number:
PCT/JP2011/003086
(87) International publication number:
WO 2011/155155 (15.12.2011 Gazette 2011/50)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 11.06.2010 JP 2010133694

(71) Applicants:
  • Diavac Limited
    Chiba 276-0046 (JP)
  • Tohoku Techno Arch Co., Ltd.
    Sendai-shi, Miyagi 980-0845 (JP)

(72) Inventors:
  • NAGATA, Masaki
    Yachiyo-shi Chiba 276-0046 (JP)
  • KAMEYAMA, Motohiro
    Yachiyo-shi Chiba 276-0046 (JP)
  • YOKOYAMA, Yoshihiko
    Sendai-shi Miyagi 980-8577 (JP)
  • INOUE, Akihisa
    Sendai-shi Miyagi 980-8577 (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) ARC MELTING FURNACE DEVICE


(57) An arc melting furnace apparatus is provided which reduces an operation burden on a worker and shortens working hours. An arc melting furnace apparatus 1 includes a housing 2 having formed therein a melting chamber 2a, a hearth 4 provided within the melting chamber 2a and having a recessed portion 4a, and a heating mechanism 10 for heating and melting a metal material supplied into the recessed portion 4 to generate an alloy ingot. The apparatus comprises a turning member 23 rotatably supported on a supporting member 21 standing within the melting chamber 2a, a perimeter edge of the turning member 23 rotating and moving along the inner surface of the recessed portion 4a to lift the alloy ingot generated in the recessed portion 4a above the hearth 4 and turn it over, and a resilient turn-over assisting member 24 provided above an upper end of the recessed portion 4a. Further, the turn-over assisting member 24 is arranged to flex by a predetermined amount when the alloy ingot abuts it, and to return to its original state from the flexed state so that the alloy ingot is urged to drop into the recessed portion 4a.