JPS54145319A - Temperature control for metal strips in cooling zone of continuous heat treatment furnace - Google Patents
Temperature control for metal strips in cooling zone of continuous heat treatment furnaceInfo
- Publication number
- JPS54145319A JPS54145319A JP5348978A JP5348978A JPS54145319A JP S54145319 A JPS54145319 A JP S54145319A JP 5348978 A JP5348978 A JP 5348978A JP 5348978 A JP5348978 A JP 5348978A JP S54145319 A JPS54145319 A JP S54145319A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- cooling
- ducts
- temperature
- heat transmission
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE:To exactly control the cooling temperature of strips to a target temperature by using in combination a feed forward control to determine the number of cooling ducts and a feed back control to correct the number of ducts in cooling strips after continuous annealing. CONSTITUTION:While being transferred from the left to the right in the cooling zone of a continuous annealing furnace, the strip 1 is cooled by n numbers of the cooling ducts 2-1 to 2-N. In this case, a relation between the overall heat transmission coefficient in the heat transmission model equation, representing the heat transmission to strip, and the number of the cooling ducts is obtained beforehand. Each time operating condition is changed, the number of ducts is obtained from a predicted value of overall heat transmission coefficient by which the target temperature of strip on the outlet side of cooled strip can be attained, and then by using the ducts, a feed forward control for cooling is made. Also, the temperature of strip is measured on the outlet side of cooled strip during cooling, then the difference between the measured value and the target temperature is fed back to correct the number of ducts, and then the temperature of strip on the outlet side of cooled strip is fitted in with exactly the target temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5348978A JPS54145319A (en) | 1978-05-04 | 1978-05-04 | Temperature control for metal strips in cooling zone of continuous heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5348978A JPS54145319A (en) | 1978-05-04 | 1978-05-04 | Temperature control for metal strips in cooling zone of continuous heat treatment furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54145319A true JPS54145319A (en) | 1979-11-13 |
| JPS5742131B2 JPS5742131B2 (en) | 1982-09-07 |
Family
ID=12944245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5348978A Granted JPS54145319A (en) | 1978-05-04 | 1978-05-04 | Temperature control for metal strips in cooling zone of continuous heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54145319A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59138775A (en) * | 1983-01-27 | 1984-08-09 | Toyota Motor Corp | Preventive device for white smoke generation from diesel engine |
| JPS6137456U (en) * | 1984-08-11 | 1986-03-08 | 株式会社クボタ | engine generator |
-
1978
- 1978-05-04 JP JP5348978A patent/JPS54145319A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5742131B2 (en) | 1982-09-07 |
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