Title:
METHOD FOR REPAIRING SURFACE OF HOT-STATE SLAB
Document Type and Number:
Japanese Patent JP2008238259
Kind Code:
A
Abstract:
To provide a method for repairing the surface of a hot-state slab, by which flaw on the surface of the hot-state slab cast with a continuous caster can surely be detected and removed at high efficiency and at a low cost and the smooth repaired surface can be obtained.
On the surface of the hot-state slab 1 produced with the continuous caster, high pressure water 4 is jetted and the flaw 10 on the slab surface or below the surface is detected by using a water-column type ultrasonic flaw detector 6 within a prescribed time after jetting the high pressure water, and thereafter, based on the position and the depth of the flaw detected by the water-column type ultrasonic flaw detector, the flaw portion is partially repaired.
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Inventors:
HAYASHI HIROMASA
YAMASHITA KOJI
ISHINO KAZUNARI
YAMASHITA KOJI
ISHINO KAZUNARI
Application Number:
JP2007086705A
Publication Date:
October 09, 2008
Filing Date:
March 29, 2007
Export Citation:
Assignee:
JFE STEEL KK
International Classes:
B22D11/124; B22D11/22; B23C3/13; B24C1/04; G01N29/04
Domestic Patent References:
| JPS5197894A | 1976-08-28 | |||
| JPS53106085A | 1978-09-14 | |||
| JPS5190874A | 1976-08-09 | |||
| JPS6072563A | 1985-04-24 | |||
| JP2003080357A | 2003-03-18 | |||
| JP2004181561A | 2004-07-02 |
Attorney, Agent or Firm:
Kenichiro Ochiai
Kazuhiro Mori
Kazuhiro Mori
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