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Title:
SURFACE MELTING TREATMENT APPARATUS OF CAST STEEL SLAB
Document Type and Number:
Japanese Patent JP2009255140
Kind Code:
A
Abstract:

To improve the yield of a cast steel slab by subjecting even both end faces in the width direction of a cast steel slab to a surface melting treatment.

A plasma torch 10 is arranged in the upper part of a cast piece H. On both sides in the width direction B of a position which is irradiated with plasma arc P from the plasma torch 10 in the cast piece H, there are arranged holding members 20, 21. The holding members 20, 21 are horizontally movable by a moving mechanisms 24, 25 and are able to come in contact with both sides in the width direction B of the cast piece H. The holding members 20, 21, in contact with both sides of the cast piece H, are able to hold the molten part M which is fused by the plasma arc P from the plasma torch 10.


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JP4631145Manufacturing method of slabs with good machinability in the center
Inventors:
TSUNENARI KEIJI
FUJI TAKEHIKO
Application Number:
JP2008108550A
Publication Date:
November 05, 2009
Filing Date:
April 18, 2008
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
B22D11/12; B21B45/00
Domestic Patent References:
JPH0994645A1997-04-08
JP2004195512A2004-07-15
JP2004195513A2004-07-15
JP2007100118A2007-04-19
JP2007098440A2007-04-19
JP2007098399A2007-04-19
JPH0994645A1997-04-08
JP2004195512A2004-07-15
JP2004195513A2004-07-15
JP2007100118A2007-04-19
JP2007098440A2007-04-19
JP2007098399A2007-04-19
Attorney, Agent or Firm:
Tetsuo Kanamoto
Miaki Kametani
Koji Hagiwara



 
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