JPS564370A - Nozzle clogging detector for injection of molten metal - Google Patents
Nozzle clogging detector for injection of molten metalInfo
- Publication number
- JPS564370A JPS564370A JP7803879A JP7803879A JPS564370A JP S564370 A JPS564370 A JP S564370A JP 7803879 A JP7803879 A JP 7803879A JP 7803879 A JP7803879 A JP 7803879A JP S564370 A JPS564370 A JP S564370A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- magnetic materials
- circuits
- signals
- injection
- 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
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
PURPOSE: To detect the clogging of the nozzles by providing magnetic materials on the surfaces of the nozzles for injection of molten metal, and converting the temperatures of said magnetic materials to oscillation frequencies.
CONSTITUTION: Powder magnetic materials 3A, 3B are coated on the surface of, for example, the long nozzle 10A of a ladle 1A and the immersion nozzle 10B of a tundish 1B. Pickup coils 4A, 4B which are not in contact with each other and come up in proximity to each other are provided on the coated surfaces thereof and these coils are connected to the molten metal injection discrimination circuits 15A, 15B consisting of oscillators 7A, 7B and frequency discrimination circuits 8A, 8B. On the other hand, sliding gates 2A, 2B are connected to opening-closing operation mechanisms 5A, 5B, gate driving devices 6A, 6B and AND circuits 9A, 9B. When no molten metal is flowing, the temperature changes of the magnetic materials 3A, 3B are changed to signals by the frequency discrimination circuits 8A, 8B. When these signals and the signals of the slide open being emitted by the AND circuits 9A, 9B hold AND conditions, alarm output signals SA, SB are output to give alarms.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7803879A JPS564370A (en) | 1979-06-22 | 1979-06-22 | Nozzle clogging detector for injection of molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7803879A JPS564370A (en) | 1979-06-22 | 1979-06-22 | Nozzle clogging detector for injection of molten metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS564370A true JPS564370A (en) | 1981-01-17 |
Family
ID=13650647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7803879A Pending JPS564370A (en) | 1979-06-22 | 1979-06-22 | Nozzle clogging detector for injection of molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS564370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128604U (en) * | 1989-03-31 | 1990-10-23 | ||
| KR100559807B1 (en) * | 2002-12-25 | 2006-03-15 | 세이코 엡슨 가부시키가이샤 | Nozzle clogging detection device, liquid droplet discharging device, electrooptical device, manufacturing method of electrooptical device, and electronic apparatus |
-
1979
- 1979-06-22 JP JP7803879A patent/JPS564370A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128604U (en) * | 1989-03-31 | 1990-10-23 | ||
| KR100559807B1 (en) * | 2002-12-25 | 2006-03-15 | 세이코 엡슨 가부시키가이샤 | Nozzle clogging detection device, liquid droplet discharging device, electrooptical device, manufacturing method of electrooptical device, and electronic apparatus |
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