JPS55158506A - Measuring device for thickness of solidified layer of casting - Google Patents
Measuring device for thickness of solidified layer of castingInfo
- Publication number
- JPS55158506A JPS55158506A JP6696779A JP6696779A JPS55158506A JP S55158506 A JPS55158506 A JP S55158506A JP 6696779 A JP6696779 A JP 6696779A JP 6696779 A JP6696779 A JP 6696779A JP S55158506 A JPS55158506 A JP S55158506A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- ultrasonic wave
- time
- solidified layer
- circuit
- 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)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
PURPOSE: To measure the thickness of solidified layer of casting exactly with a simple device by measuring signals from both an ultrasonic wave generator and a receiver by means of a time measuring circuit and by computing the thickness of solidified layer of the casting by means of an arithmetic circuit.
CONSTITUTION: When a pulse current is fed to the ultrasonic wave generating coil 9 from a high frequency pulse power supply 10, an ultrasonic wave is produced, passes through the soldified layer of the cast piece 4 and molten metal of the unsolidified layer and reaches the opposite side. And an eddy current is produced in the surface of the cast piece 4 by an interaction between the oscillating force of the ultrasonic wave and the magnetic field in an iron core 6, which is generated by applying voltage from a power supply 7 to a field coil 5. A gate circuit 20 to which a signal more than a certain level is fed from a detecting coil 17 sends a time pulse produced by a time signal generator 21 to a counting circuit 22. A time signal T is emitted from the counting circuit 22 by the time pulse. The thickness of the solidified layer can be measured in the arithmetic circuit 28 by both the time signal T and a signal of a temperature setter 23.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6696779A JPS55158506A (en) | 1979-05-30 | 1979-05-30 | Measuring device for thickness of solidified layer of casting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6696779A JPS55158506A (en) | 1979-05-30 | 1979-05-30 | Measuring device for thickness of solidified layer of casting |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55158506A true JPS55158506A (en) | 1980-12-10 |
Family
ID=13331293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6696779A Pending JPS55158506A (en) | 1979-05-30 | 1979-05-30 | Measuring device for thickness of solidified layer of casting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55158506A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0255909A (en) * | 1988-08-22 | 1990-02-26 | Nippon Steel Corp | Arithmetic unit for solidification thickness of cast billet |
JP2009068914A (en) * | 2007-09-11 | 2009-04-02 | Nippon Steel Corp | Inner state measuring instrument, inner state measuring method, program and computer readable storage medium |
EP2172289A1 (en) | 2003-11-27 | 2010-04-07 | JFE Steel Corporation | Method and apparatus for detecting crater end of continuously cast product, and method for producing continuously cast product |
-
1979
- 1979-05-30 JP JP6696779A patent/JPS55158506A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0255909A (en) * | 1988-08-22 | 1990-02-26 | Nippon Steel Corp | Arithmetic unit for solidification thickness of cast billet |
EP2172289A1 (en) | 2003-11-27 | 2010-04-07 | JFE Steel Corporation | Method and apparatus for detecting crater end of continuously cast product, and method for producing continuously cast product |
US7740051B2 (en) | 2003-11-27 | 2010-06-22 | Jfe Steel Corporation | Method and apparatus for detecting crater end of continuously cast product, and method for producing continuously cast product |
US7971630B2 (en) | 2003-11-27 | 2011-07-05 | Jfe Steel Corporation | Method and apparatus for detecting a crater end of a continuously cast product |
JP2009068914A (en) * | 2007-09-11 | 2009-04-02 | Nippon Steel Corp | Inner state measuring instrument, inner state measuring method, program and computer readable storage medium |
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