JPS5597847A - Slag detecting method in molten metal passage - Google Patents
Slag detecting method in molten metal passageInfo
- Publication number
- JPS5597847A JPS5597847A JP413779A JP413779A JPS5597847A JP S5597847 A JPS5597847 A JP S5597847A JP 413779 A JP413779 A JP 413779A JP 413779 A JP413779 A JP 413779A JP S5597847 A JPS5597847 A JP S5597847A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- coil
- slag
- molten steel
- ladle
- 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
Abstract
PURPOSE: To detect accurately the slag passing start point into nozzle, by bringing the probe coil close to the ladle nozzle, and detecting the damping start point of lift-off fluctuation electric signal occurring in the coil along with vibrations of the nozzle.
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 close to a nozzle 12, and the coil is excited by passing a constant current at fixed frequency. When the molten steel passes through the nozzle, the nozzle vibrates to fluctuate the distance between the coil and molten steel, thereby generating a lift-off fluctuation electric signal, which is detected in a detecting device 48. Since the signal is damped suddenly when the slag flows into the nozzle, a cylinder 32 is automatically operated by a control signal from the detecting device, thereby closing a gate 34.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP413779A JPS5597847A (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 |
|---|---|---|---|
| JP413779A JPS5597847A (en) | 1979-01-16 | 1979-01-16 | Slag detecting method in molten metal passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5597847A true JPS5597847A (en) | 1980-07-25 |
Family
ID=11576382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP413779A Pending JPS5597847A (en) | 1979-01-16 | 1979-01-16 | Slag detecting method in molten metal passage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5597847A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58209468A (en) * | 1982-05-31 | 1983-12-06 | Nippon Kokan Kk <Nkk> | Detection of timing when molten steel in vessel begins to flow out |
| CN102527969A (en) * | 2010-12-23 | 2012-07-04 | 北京中远通科技有限公司 | Automatic ladle slag outflow detection system and method thereof |
-
1979
- 1979-01-16 JP JP413779A patent/JPS5597847A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58209468A (en) * | 1982-05-31 | 1983-12-06 | Nippon Kokan Kk <Nkk> | Detection of timing when molten steel in vessel begins to flow out |
| CN102527969A (en) * | 2010-12-23 | 2012-07-04 | 北京中远通科技有限公司 | Automatic ladle slag outflow detection system and method thereof |
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