JPS5735640A - Method for controlling plate temperature of continuous annealing furnace - Google Patents
Method for controlling plate temperature of continuous annealing furnaceInfo
- Publication number
- JPS5735640A JPS5735640A JP10902480A JP10902480A JPS5735640A JP S5735640 A JPS5735640 A JP S5735640A JP 10902480 A JP10902480 A JP 10902480A JP 10902480 A JP10902480 A JP 10902480A JP S5735640 A JPS5735640 A JP S5735640A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- temp
- time
- point
- case
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
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)
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE:To cause out of plate temp. on the overheating side and minimize out of plate temp. sections by estimating the optimum timing for changing the setting of furnace temp. from the direction of the changing the setting of the furnace temp. and the furnace operating conditions of that time, and commanding a change for the set value at that timing. CONSTITUTION:In the case of changing a steel strip from thick to thin one with a point P as a boundary in a continuous annealing furnace, the furnace temp. is lowered stepwise at around the point P. In this case, the setting of the furnace temp. is changed at the time when the point P arrives at the outlet of the furnace. During the response delay time T1, the succeeding steel strip is out of plate temp. in an overheating direction. In the case of changing the thickness of the steel strip from thin to thick one with the point P' as a boundary, the response delay time T1' of the furnace temp. is forecast, and the set value of the furnace temp. is changed before the T1' time when the point P' arrives at the furnace inlet. In this case, the part corresponding to the T1' time of the tail end of the preceding steel strip is out of plate temp. in a heating direction. In this case, the quantity of heat that the steel plate to be changed obtains is calculated, and flow rate of combustion of the furnace is determined. Thence, the change rate of the combustion rate of the ratio of the change rate of the combustion rate and the difference between the upper, lower limit combustion rates and the combustion rate before the change is determined and the time T1' is estimated from this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10902480A JPS6036456B2 (en) | 1980-08-08 | 1980-08-08 | Method of controlling plate temperature in continuous annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10902480A JPS6036456B2 (en) | 1980-08-08 | 1980-08-08 | Method of controlling plate temperature in continuous annealing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5735640A true JPS5735640A (en) | 1982-02-26 |
| JPS6036456B2 JPS6036456B2 (en) | 1985-08-20 |
Family
ID=14499659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10902480A Expired JPS6036456B2 (en) | 1980-08-08 | 1980-08-08 | Method of controlling plate temperature in continuous annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6036456B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019180961A1 (en) * | 2018-03-23 | 2019-09-26 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 | Device and method for assisting operation of heat-treating furnace, and heat-treating facility and operation method thereof |
-
1980
- 1980-08-08 JP JP10902480A patent/JPS6036456B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019180961A1 (en) * | 2018-03-23 | 2019-09-26 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 | Device and method for assisting operation of heat-treating furnace, and heat-treating facility and operation method thereof |
| CN111742070A (en) * | 2018-03-23 | 2020-10-02 | 普锐特冶金技术日本有限公司 | Operation support device and operation support method for heat treatment furnace, heat treatment facility and operation method thereof |
| JPWO2019180961A1 (en) * | 2018-03-23 | 2021-03-11 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 | Heat treatment furnace operation support device and operation support method, heat treatment equipment and its operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6036456B2 (en) | 1985-08-20 |
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