JPS5723036A - Method for cooling steel plate - Google Patents
Method for cooling steel plateInfo
- Publication number
- JPS5723036A JPS5723036A JP9748280A JP9748280A JPS5723036A JP S5723036 A JPS5723036 A JP S5723036A JP 9748280 A JP9748280 A JP 9748280A JP 9748280 A JP9748280 A JP 9748280A JP S5723036 A JPS5723036 A JP S5723036A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- temp
- difference
- cooling roll
- deformation
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 12
- 239000010959 steel Substances 0.000 title abstract 12
- 238000001816 cooling Methods 0.000 title abstract 8
- 238000000034 method Methods 0.000 title abstract 2
- 230000008646 thermal stress Effects 0.000 abstract 3
- 230000008642 heat stress Effects 0.000 abstract 1
- 230000035882 stress Effects 0.000 abstract 1
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
- C21D9/573—Continuous furnaces for strip or wire with cooling
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 confine the deformation of a steel plate caused by ununiform cooling within a tolerance value by a method wherein, from temp. difference of the steel plate when the deformation thereof is reached to the tolerance value and each physical values at this time, thermal stress which is different corresponding to average temp. difference of the steel plate are measured and a temp. of a cooling roll is controlled so as to adjust said stress to a yield point of said steel plate. CONSTITUTION:Usually, both ends of the steel plate is fixed and extention DELTAL due to temp. difference DELTAT of both left and right end surfaces, strain epsilon and thermal stress sigma are respectively determined by formula I, II and III. Then, because a phenomena similar to the case of said model are partially generated also in cooling the steel plate by a practical cooling roll, the thermal stress generated in this time is made lower than a yield point of the steel plate to prevent the deformation of the steel plate. That is, the temp. difference DELTAT may be controlled so as to satisfy a condition of a formula IV. In a practical cooling roll, as said temp. difference, by using difference of a temp. of the cooling roll and an average temp. of the steel plate at a position where said steel plate starts contact against the cooling roll, the heat stress generated by said temp. difference is made lower than a yield point of said steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9748280A JPS5723036A (en) | 1980-07-18 | 1980-07-18 | Method for cooling steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9748280A JPS5723036A (en) | 1980-07-18 | 1980-07-18 | Method for cooling steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5723036A true JPS5723036A (en) | 1982-02-06 |
| JPS6259170B2 JPS6259170B2 (en) | 1987-12-09 |
Family
ID=14193486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9748280A Granted JPS5723036A (en) | 1980-07-18 | 1980-07-18 | Method for cooling steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5723036A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920429A (en) * | 1982-07-26 | 1984-02-02 | Nippon Kokan Kk <Nkk> | Steel strip cooling method in continuous annealing furnace |
| US4495009A (en) * | 1982-07-08 | 1985-01-22 | Kawasaki Steel Corporation | Method of cooling cold steel strip with cooling rolls |
| JPS60169525A (en) * | 1984-02-15 | 1985-09-03 | Mitsubishi Heavy Ind Ltd | Method for cooling steel strip in cooling zone of continuous annealing furnace |
| US4705579A (en) * | 1983-02-03 | 1987-11-10 | Nippon Steel Corporation | Method for cooling a metal strip in a continuous annealing furnace |
-
1980
- 1980-07-18 JP JP9748280A patent/JPS5723036A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495009A (en) * | 1982-07-08 | 1985-01-22 | Kawasaki Steel Corporation | Method of cooling cold steel strip with cooling rolls |
| JPS5920429A (en) * | 1982-07-26 | 1984-02-02 | Nippon Kokan Kk <Nkk> | Steel strip cooling method in continuous annealing furnace |
| US4705579A (en) * | 1983-02-03 | 1987-11-10 | Nippon Steel Corporation | Method for cooling a metal strip in a continuous annealing furnace |
| JPS60169525A (en) * | 1984-02-15 | 1985-09-03 | Mitsubishi Heavy Ind Ltd | Method for cooling steel strip in cooling zone of continuous annealing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6259170B2 (en) | 1987-12-09 |
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