JPS57112962A - Detection of abnormality of mold in continuous casting - Google Patents
Detection of abnormality of mold in continuous castingInfo
- Publication number
- JPS57112962A JPS57112962A JP18869580A JP18869580A JPS57112962A JP S57112962 A JPS57112962 A JP S57112962A JP 18869580 A JP18869580 A JP 18869580A JP 18869580 A JP18869580 A JP 18869580A JP S57112962 A JPS57112962 A JP S57112962A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- comparator
- filter
- mold
- compared
- 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)
Abstract
PURPOSE: To detect the abnormality in restraining force at the contact face between a mold and an ingot by detecting the acceleration in the oscillation of the mold in the direction at a right angle to the drawing direction of the ingot and using the signal obtained by passing the detected acceleration to a specific low pass filter.
CONSTITUTION: A filter 3 is used to convert an acceleration signal to a displacement signal and is a low pass filter giving 12dB/oct attenuation characteristics. The detection signal from an accelometer 1 is passed through an amplifier 2 and is converted to a displacement signal with the filter 3. Part of the displacement signal is detected with a detector 4, and part thereof is inputted directly to comparator 5 where it is compared with a set level. When it is higher than the set level, a signal is outputted from the comparator 5. Part is inputted to an envelope detecting circuit 6, and is compared with a set level in a comparator 7. Part of the signal from the filter 3 is inputted to a band pass filter 8, is detected with a detecter 9, and is compared in a comparator 10. When an OR circuit 11 receives inputs from ≥1 of any of comparators 5, 7, 10, it outputs a signal to an alarm 12, then the operator inspects a recorder 13 and takes necessary remedy.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18869580A JPS57112962A (en) | 1980-12-29 | 1980-12-29 | Detection of abnormality of mold in continuous casting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18869580A JPS57112962A (en) | 1980-12-29 | 1980-12-29 | Detection of abnormality of mold in continuous casting |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57112962A true JPS57112962A (en) | 1982-07-14 |
Family
ID=16228199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18869580A Pending JPS57112962A (en) | 1980-12-29 | 1980-12-29 | Detection of abnormality of mold in continuous casting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57112962A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6363562A (en) * | 1986-09-05 | 1988-03-19 | Sumitomo Heavy Ind Ltd | Oscillation method for mold in continuous casting |
-
1980
- 1980-12-29 JP JP18869580A patent/JPS57112962A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6363562A (en) * | 1986-09-05 | 1988-03-19 | Sumitomo Heavy Ind Ltd | Oscillation method for mold in continuous casting |
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