JPS642772A - Method for judging surface defect on cast slab - Google Patents
Method for judging surface defect on cast slabInfo
- Publication number
- JPS642772A JPS642772A JP15442787A JP15442787A JPS642772A JP S642772 A JPS642772 A JP S642772A JP 15442787 A JP15442787 A JP 15442787A JP 15442787 A JP15442787 A JP 15442787A JP S642772 A JPS642772 A JP S642772A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- metal surface
- mold
- short side
- thermocouples
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Continuous Casting (AREA)
Abstract
PURPOSE: To predict surface defect condition on a cast slab by informing variable condition of molten metal surface and mold powder layer with thermocouples and molten metal surface detector buried into center of short side and long side in a mold.
CONSTITUTION: Plural thermocouples 30 are arranged to vertical direction at the short side in the mold, and the molten metal surface detector 10 for controlling the molten metal surface and further the molten metal surface detector 20 for measuring variation of the molten metal surface above the molten metal surface near the short side in the mold, are arranged. Signal 31 from the thermocouples 30 and signal 21 from the molten metal surface detector are inputted into a terminal box 40, further inputted into a process computor 41 and in there, each data of the temp. and the molten metal surface in time series are stored, The temp. variation at the short side in the mold with the thermocouples 30 vertically arranged at the short side in the mold and level variations of the molten metal surface and slag are detected. Then, development of the surface defect is predicted by collating relation between the above detected value and the developed surface defect with a pattern of temp. variation beforehand grasped from the actual operational results under referring the variation quantity of the molten metal surface from the molten metal surface detectors 10, 20, and it is judged whether or not, improvement of the cast slab surface is necessary.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-154427A JPH012772A (en) | 1987-06-23 | Method for determining surface defects in slabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-154427A JPH012772A (en) | 1987-06-23 | Method for determining surface defects in slabs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS642772A true JPS642772A (en) | 1989-01-06 |
| JPH012772A JPH012772A (en) | 1989-01-06 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105874A (en) * | 1989-09-13 | 1992-04-21 | Institut De Recherches De La Siderurgie Francaise (Irsid) | Process for continuously determining the thickness of the liquid slag on the surface of a bath of molten metal in a metallurgical container |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105874A (en) * | 1989-09-13 | 1992-04-21 | Institut De Recherches De La Siderurgie Francaise (Irsid) | Process for continuously determining the thickness of the liquid slag on the surface of a bath of molten metal in a metallurgical container |
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