JPS57115960A - Detection for inclusion of cast steel in continuous casting mold - Google Patents
Detection for inclusion of cast steel in continuous casting moldInfo
- Publication number
- JPS57115960A JPS57115960A JP142181A JP142181A JPS57115960A JP S57115960 A JPS57115960 A JP S57115960A JP 142181 A JP142181 A JP 142181A JP 142181 A JP142181 A JP 142181A JP S57115960 A JPS57115960 A JP S57115960A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- values
- mold
- sized
- shell
- 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 stop casting temporarily or to decelerate casting speed and to prevent the generatin of breakout by detecting the large-sized inclusions in the surface part of a solidified shell from the abrupt drop of the temp. in the prescribed position in mold walls.
CONSTITUTION: Thermocouples are buried in the position lower by ≥20mm and ≤700mm from the melt level in a mold, at ≥1mm and ≤30mm under the inside surface of the mold, and the temp. T is measured. When a large-sized inclusion is formed in the shell surface and contacts with the above-mentioned thermocouple point, the temp. T indicates an abrupt abnormal temp. drop P1. The decision of whether it is abnromal or not is accomplished by comparing the same with the temp. T and the reference values obtd. by deducting prescribed values kD1, kD4 from the time series smoothed values of the steady indicating temp. of the temp. T. When the readings of the T at every period of sampling are under the reference values by prescribed values, it is decided that the large- sized inclusin is detected, and the casting of cast steel is stopped temporarily and the drawing is performed after waiting for the formation of the shell.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP142181A JPS57115960A (en) | 1981-01-08 | 1981-01-08 | Detection for inclusion of cast steel in continuous casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP142181A JPS57115960A (en) | 1981-01-08 | 1981-01-08 | Detection for inclusion of cast steel in continuous casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57115960A true JPS57115960A (en) | 1982-07-19 |
Family
ID=11500995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP142181A Pending JPS57115960A (en) | 1981-01-08 | 1981-01-08 | Detection for inclusion of cast steel in continuous casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57115960A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61176456A (en) * | 1985-02-01 | 1986-08-08 | Nippon Steel Corp | Predict method of breakout caused by entrainment of inclusion |
| JPS62192243A (en) * | 1986-02-17 | 1987-08-22 | Nippon Kokan Kk <Nkk> | Detection of casting slab longitudinal cracking in continuous casting |
| US4774998A (en) * | 1985-02-01 | 1988-10-04 | Nippon Steel Corporation | Method and apparatus for preventing cast defects in continuous casting plant |
-
1981
- 1981-01-08 JP JP142181A patent/JPS57115960A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61176456A (en) * | 1985-02-01 | 1986-08-08 | Nippon Steel Corp | Predict method of breakout caused by entrainment of inclusion |
| US4774998A (en) * | 1985-02-01 | 1988-10-04 | Nippon Steel Corporation | Method and apparatus for preventing cast defects in continuous casting plant |
| JPS62192243A (en) * | 1986-02-17 | 1987-08-22 | Nippon Kokan Kk <Nkk> | Detection of casting slab longitudinal cracking in continuous casting |
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