JPS5597846A - Slag detecting method in molten metal passage - Google Patents
Slag detecting method in molten metal passageInfo
- Publication number
- JPS5597846A JPS5597846A JP413679A JP413679A JPS5597846A JP S5597846 A JPS5597846 A JP S5597846A JP 413679 A JP413679 A JP 413679A JP 413679 A JP413679 A JP 413679A JP S5597846 A JPS5597846 A JP S5597846A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- nozzle
- slag
- ladle
- fluctuation
- 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
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Continuous Casting (AREA)
Abstract
PURPOSE: To detect accurately the slag passing start point into nozzle, bringing the probe coil close to the ladle nozzle, giving vibrations, and detecting the damping start point of lift-off fluctuation electric signal caused in the coil by vibrations.
CONSTITUTION: When pouring molten steel 10 in a ladle 30 into a continuous casting facility 40, a driving device 50 is operated when slag 11 is about to approach the ladle bottom so as to bring a probe coil 44 and a vibrator 42 close to a bozzle 12, and constant current of fixed frequency is applied to excite the coil, and the coil is vibrated at constant amplitude and fixed frequency while controlling the vibrator with a control device 46, and a lift-off fluctuation electric signal caused due to fluctuation of distance between the coil and the molten steel in the nozzle is detected by a detecting device 48. Since the signal is damped suddenly when the slag flows into the nozzle, a cylinder 32 is operated automatically by a control circuit in the detecting device, thereby closing a gate 34.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP413679A JPS5597846A (en) | 1979-01-16 | 1979-01-16 | Slag detecting method in molten metal passage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP413679A JPS5597846A (en) | 1979-01-16 | 1979-01-16 | Slag detecting method in molten metal passage |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5597846A true JPS5597846A (en) | 1980-07-25 |
Family
ID=11576355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP413679A Pending JPS5597846A (en) | 1979-01-16 | 1979-01-16 | Slag detecting method in molten metal passage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5597846A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4635832A (en) * | 1984-04-05 | 1987-01-13 | Voest-Alpine Aktiengesellschaft | Method of, and an arrangement for casting metal melt |
US4810988A (en) * | 1988-06-20 | 1989-03-07 | Westinghouse Electric Corp. | Slag detector transducer coil assembly |
US4859940A (en) * | 1987-09-09 | 1989-08-22 | Westinghouse Electric Corp. | Apparatus for detecting onset of slag entrainment in a molten metal stream |
US5042700A (en) * | 1989-05-12 | 1991-08-27 | Stopinc Aktiengesellschaft | Process and equipment to determine disturbance variables when pouring molten metal from a container |
US6539805B2 (en) | 1994-07-19 | 2003-04-01 | Vesuvius Crucible Company | Liquid metal flow condition detection |
CN102397999A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Method for measuring slag thickness and headroom of steel ladle |
-
1979
- 1979-01-16 JP JP413679A patent/JPS5597846A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4635832A (en) * | 1984-04-05 | 1987-01-13 | Voest-Alpine Aktiengesellschaft | Method of, and an arrangement for casting metal melt |
US4859940A (en) * | 1987-09-09 | 1989-08-22 | Westinghouse Electric Corp. | Apparatus for detecting onset of slag entrainment in a molten metal stream |
US4810988A (en) * | 1988-06-20 | 1989-03-07 | Westinghouse Electric Corp. | Slag detector transducer coil assembly |
US5042700A (en) * | 1989-05-12 | 1991-08-27 | Stopinc Aktiengesellschaft | Process and equipment to determine disturbance variables when pouring molten metal from a container |
US6539805B2 (en) | 1994-07-19 | 2003-04-01 | Vesuvius Crucible Company | Liquid metal flow condition detection |
CN102397999A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Method for measuring slag thickness and headroom of steel ladle |
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