CN114210739A - Method and device for controlling temperature difference of two transverse sides of strip steel - Google Patents
Method and device for controlling temperature difference of two transverse sides of strip steel Download PDFInfo
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- CN114210739A CN114210739A CN202111413329.7A CN202111413329A CN114210739A CN 114210739 A CN114210739 A CN 114210739A CN 202111413329 A CN202111413329 A CN 202111413329A CN 114210739 A CN114210739 A CN 114210739A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
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- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention belongs to the technical field of hot rolling of strip steel, and particularly relates to a method and a device for controlling temperature difference of two transverse sides of strip steel, which comprises a roller way, wherein the left side surface and the right side surface of the roller way are respectively hinged with one opposite surface of a rough rolling heat-insulating cover body a and one opposite surface of a rough rolling heat-insulating cover body b through hinges, the left side surface and the right side surface of the rough rolling heat-insulating cover body a and the rough rolling heat-insulating cover body b are respectively and fixedly connected with one opposite surface of two connecting blocks a, the front surface of the connecting block a is fixedly connected with the lower surface of the connecting block b through a pin shaft a, the lower surface of the connecting block b is fixedly connected with an air cylinder telescopic rod of an air cylinder a, the air cylinder a is arranged on the upper surface of a fixed block, and the right side surface of the fixed plate is fixedly connected with the left side surface of the roller way, so that the temperature difference of the two sides of the strip steel is controlled within +/-8 ℃. The deviation scrap steel caused by overlarge temperature difference is reduced by 50%, and the asymmetric straightness blocking and wedge blocking caused by the temperature difference of two sides are reduced by 30%.
Description
Technical Field
The invention belongs to the technical field of hot rolling of strip steel, and particularly relates to a method and a device for controlling temperature difference of two transverse sides of the strip steel.
Background
Due to the heat dissipation problem of the furnace body structure and the strip steel, the strip steel has temperature difference in the transverse direction, and particularly, the temperature difference of 10-30 ℃ may exist at the two side parts. Some temperature-sensitive strip steels have the defects of cracks, deviation, wedge-shaped out-of-tolerance and the like, such as high-grade non-oriented silicon steel, high-strength thin-gauge steel and other steel types with strict technical conditions and process systems. The defects seriously affect the quality and performance of the strip steel and the use of the next working procedure. Therefore, the invention provides a method for reducing the temperature difference between two sides of the strip steel according to field practice. The method is particularly suitable for the problem of head stability of steel grades with unstable large heads with set deviations such as high-strength thin specifications, high-silicon thin specifications and the like.
Aiming at the problems in the prior art, the invention provides a method and a device for reducing two sides of strip steel, which are used for solving the quality and performance problems caused by overlarge temperature difference between two sides of the strip steel in the prior art. The method is particularly suitable for the problem of head stability of steel grades with unstable large heads with set deviations such as high-strength thin specifications, high-silicon thin specifications and the like. According to field data, the transverse temperature of the strip steel is counted to be that the temperature of the outlet furnace door side is lower than that of the strip steel of the inlet furnace door side, and the proportion of the strip steel occupying all steel is more than 95%.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a method and a device for controlling the temperature difference of two transverse sides of strip steel, which have the characteristic of reducing the temperature difference of the two sides of the strip steel.
In order to achieve the purpose, the invention provides the following technical scheme: the device comprises a rough rolling heat preservation cover, the rough rolling heat preservation cover comprises a roller way and a rough rolling heat preservation cover body, the rough rolling heat preservation cover body comprises a rough rolling heat preservation cover body a and a rough rolling heat preservation cover body b, one side, opposite to the rough rolling heat preservation cover body a and the rough rolling heat preservation cover body b, of the rough rolling heat preservation cover body a is hinged to the two side faces of the roller way through hinges, the left side face and the right side face of the rough rolling heat preservation cover body a and the left side face of the rough rolling heat preservation cover body b are fixedly connected with the side faces, opposite to the two connecting blocks a, of the left side face and the right side face of the rough rolling heat preservation cover body b respectively, the front face of the connecting block a is fixedly connected with the lower surface of the connecting block b through a pin shaft a, the lower surface of the connecting block b is fixedly connected with an air cylinder telescopic rod of the air cylinder a, and the air cylinder a is arranged on the upper surface of a fixing block.
Optionally, one surface of the rough rolling heat insulation cover body a opposite to the rough rolling heat insulation cover body b is fixedly connected with the left side surface and the right side surface of the two connecting plates respectively, and the lower surfaces of the two connecting plates are attached to the lower surfaces of the inner walls of the clamping grooves formed in the upper surfaces of the rough rolling heat insulation cover body a and the rough rolling heat insulation cover body b respectively.
Optionally, the device still includes the finish rolling heat preservation cover, the finish rolling heat preservation cover is located the rear end of rough rolling heat preservation cover, the finish rolling heat preservation cover includes roll table and fixed plate, the right flank of roll table and the left surface fixed connection of fixed plate, two draw-in grooves have been seted up respectively to the left and right sides of fixed plate upper surface, the inner wall of draw-in groove and the surface laminating of fixture block, the upper surface of fixture block and the lower fixed surface of finish rolling heat preservation cover body are connected, the right side of finish rolling heat preservation cover body lower surface and the upper fixed surface of connecting block c are connected, the front of connecting block c is through the lower fixed surface of round pin axle b with connecting block d, the lower surface of connecting block d and the cylinder telescopic link fixed connection of cylinder b, cylinder b sets up the upper surface at the roll table.
Optionally, the lower surface of the finish rolling heat-insulating cover body is attached to the upper surface of the limiting block, and the right side face of the limiting block is fixedly connected with the left side face of the roller way.
Optionally, the device further comprises an edge heater, and the edge heater is arranged at the rear end of the finish rolling heat preservation cover.
Optionally, the pair of heating bodies of the edge heater may move towards or away from each other to separately control the temperature of the two edges of the strip steel.
Based on the same invention concept, the invention also provides a method for controlling the temperature difference of the two transverse sides of the strip steel, and the implementation process of the technical scheme is as follows:
s1, increasing the opening degree of a furnace door side at an outlet of a flat flame burner, opening a row of coal gas manual butterfly valves at the furnace door side of a soaking zone burner by 90-100%, and opening degrees of other burner coal gas manual butterfly valves at an inlet side by 60-70% to increase the heat value close to the furnace door;
s2, adjusting the load distribution of the second heating section and the soaking section of the heating furnace, reducing the opening degree of a burner gas regulating valve of the second heating section of the heating furnace by 10-20%, improving the opening degree of a burner gas regulating valve of the soaking section by 5-10%, and reducing the temperature gradient between the heating sections so as to reduce the transverse temperature difference caused by the temperature difference of each section in the heating furnace;
s3, changing a rough rolling temperature diffusing mode, utilizing two cylinders a on the left side and the right side of a rough rolling heat-insulating cover body a and a rough rolling heat-insulating cover body b on a roller way of a rough rolling area, and enabling cylinder telescopic rods of the two cylinders a to move downwards to drive a connecting block a and the connecting block b to move downwards, so that the rough rolling heat-insulating cover body a and the rough rolling heat-insulating cover body b on the two sides of the roller way can be opened independently. Optionally, the method further includes:
s4, the fine rolling heat preservation cover body on the roller way is linked with the fine rolling through rough rolling and fine rolling, the thickness of the fine rolling heat preservation cover body is 250-350mm, the operation side is opened, heat dissipation of a blank plate on the operation side is accelerated, and temperature difference between the two sides is reduced.
Compared with the prior art, the invention has the beneficial effects that:
the invention controls the temperature difference between the two sides of the strip steel within +/-8 ℃. The deviation scrap steel caused by overlarge temperature difference is reduced by 50%, and the asymmetric straightness blocking and wedge blocking caused by the temperature difference of two sides are reduced by 30%.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic sectional view of a rough rolling heat-insulating cover body according to the present invention;
FIG. 2 is a schematic view of a section structure of a heat-insulating cover of a rough rolling and finish rolling connecting roller way in the invention.
In the figure: 1. a roller bed; 3. rough rolling of the heat preservation cover body a; 4. rough rolling the heat preservation cover body b; 5. a connecting plate; 8. connecting blocks a; 9. connecting blocks b; 10. a cylinder a; 11. a fixed block; 12. finish rolling the heat preservation cover body; 15. a limiting block; 16. a cylinder b; 17. and (7) fixing the plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-2, the present invention provides the following technical solutions: the device comprises a rough rolling heat-insulating cover, the rough rolling heat-insulating cover comprises a roller way 1 and a rough rolling heat-insulating cover body, the rough rolling heat-insulating cover body comprises a rough rolling heat-insulating cover body a3 and a rough rolling heat-insulating cover body b4, one opposite surfaces of the rough rolling heat-insulating cover body a3 and the rough rolling heat-insulating cover body b4 are hinged to two side surfaces of the roller way 1 through hinges, the left side surface and the right side surface of the rough rolling heat-insulating cover body a3 and the left side surface and the right side surface of the rough rolling heat-insulating cover body b4 are fixedly connected with the opposite surfaces of two connecting blocks a8 respectively, the front surface of the connecting block a8 is fixedly connected with the lower surface of the connecting block b9 through a pin shaft a, the lower surface of the connecting block b9 is fixedly connected with an air cylinder of the air cylinder a10, and the air cylinder a10 is arranged on the upper surface of a fixing block 11.
Specifically, the opposite surfaces of the rough rolling heat-insulating cover body a3 and the rough rolling heat-insulating cover body b4 are respectively and fixedly connected with the left side surface and the right side surface of the two connecting plates 5, the lower surfaces of the two connecting plates 5 are respectively attached to the lower surfaces of the inner walls of the clamping grooves formed in the upper surfaces of the rough rolling heat-insulating cover body a3 and the rough rolling heat-insulating cover body b4, the connecting plate 5 on the left side surface of the rough rolling heat-insulating cover body a3 is lapped in the sliding groove in the upper surface of the rough rolling heat-insulating cover body b4, the connecting plate 5 on the right side surface of the rough rolling heat-insulating cover body b4 is lapped in the sliding groove in the upper surface of the rough rolling heat-insulating cover body a3, mutual support is carried out, and the lifting work of the rough rolling heat-insulating cover body a3 and the rough rolling heat-insulating cover body b4 is not influenced.
As an optional implementation mode, the device still includes the finish rolling heat preservation cover, the finish rolling heat preservation cover is located the rear end of rough rolling heat preservation cover, the finish rolling heat preservation cover includes roll table 1 and fixed plate 17, the right flank of roll table 1 and the left surface fixed connection of fixed plate 17, two draw-in grooves have been seted up respectively to the left and right sides of fixed plate 17 upper surface, the inner wall of draw-in groove and the surface laminating of fixture block, the upper surface of fixture block and the lower fixed surface of finish rolling heat preservation cover body 12 are connected, the right side of finish rolling heat preservation cover body 12 lower surface and the upper fixed surface of connecting block c are connected, the front of connecting block c is connected through the lower fixed surface of round pin axle b with connecting block d, the lower surface of connecting block d and the cylinder telescopic link fixed connection of cylinder b16, cylinder b16 sets up the upper surface at roll table 1.
Specifically, through setting up the lower surface of finish rolling heat preservation cover body 12 and the upper surface laminating of stopper 15, the right flank of stopper 15 and the left surface fixed connection of roll table 1, stopper 15 supports the lower surface of finish rolling heat preservation cover body 12, can restrict the position when finish rolling heat preservation cover body 12 descends simultaneously.
Specifically, the device further comprises an edge heater, and the edge heater is arranged at the rear end of the finish rolling heat preservation cover.
The arranged edge heater b13 can adjust the heating width according to the temperature difference condition of two sides of the intermediate billet at the rough rolling outlet, thereby improving the temperature difference of two sides, simultaneously leading the edge heater b13 to carry out single-side heating, realizing the compensation of low temperature of one side of the strip steel,
preferably, the pair of heating bodies of the edge heater can move towards or away from each other to independently control the temperature of the two edges of the strip steel. The control of a unilateral heating area can be realized, the actual need is increased or reduced, and meanwhile, the coils on the two sides of the edge heater b13 have different adjustable power and different temperatures on the two sides of the heating temperature.
Specifically, the method and the device for controlling the temperature difference of the two transverse sides of the strip steel have the technical scheme that the implementation process comprises the following steps:
s1, the steel grade of the transition material before and after the steel grade sensitive to the temperature is the steel grade of which the difference of the tapping temperature is not more than +/-100 ℃, so that the transverse temperature difference of the blank plate caused by too large difference of the temperature in the furnace is prevented.
S2, opening degree of an outlet furnace door side of the flat flame burner is increased, a row of coal gas manual butterfly valves on the furnace door side of the soaking zone burner are opened by 90% -100%, and opening degrees of other burner coal gas manual butterfly valves on the inlet side are opened by 60% -70%, so that the heat value close to the furnace door is increased.
S3, adjusting the load distribution of the second heating section and the soaking section of the heating furnace, reducing the opening degree of a burner gas regulating valve of the second heating section of the heating furnace by 10-20%, improving the opening degree of a burner gas regulating valve of the soaking section by 5-10%, and reducing the temperature gradient between the heating sections, thereby reducing the transverse temperature difference caused by the temperature difference of each section in the heating furnace.
S4, changing a rough rolling temperature diffusing mode, and driving the connecting block a8 and the connecting block b9 to move downwards by using the rough rolling heat-insulating cover body a3 and the two cylinders a10 on the left side and the right side of the rough rolling heat-insulating cover body b4 on the roller way 1 in a rough rolling area through the telescopic rods of the cylinders a10, so that the rough rolling heat-insulating cover body a3 and the rough rolling heat-insulating cover body b4 on the two sides of the roller way 1 can be opened independently.
S5, the finish rolling heat preservation cover body 12 on the rough rolling and finish rolling link roller way 1 is opened for 250-350mm, and the operation side is opened, so that the heat dissipation of the blank plate on the operation side is accelerated, and the temperature difference between the two sides is reduced.
The steel grade G is sensitive to transverse temperature, when the transverse temperature difference of two sides exceeds 20 ℃, the index name Af is sharply reduced, and the index difference is 40% compared with the index when the transverse temperature difference of two sides is within 8 ℃. When the patent is not adopted, the transverse temperature difference of two sides of the steel grade G is 20 +/-5 ℃, and the temperature T of the transmission side of the steel grade G isOSHigher than TDS20 +/-5 ℃, the index Af is higher by about 40%, the yield is low, and the production cost is influenced, so that the following scheme is formulated for experimental process adjustment and equipment adjustment of G steel grade:
example 1
M1, the tapping temperature of the transition steel grade W is lower than that of the steel grade G to be rolled by 80 ℃.
M2, adjusting the valve of the soaking section according to S2, opening a row of manual butterfly valves of the gas on the furnace door side of the soaking section burner by 90-100%, and opening degrees of the manual butterfly valves of the other burners by 60-70% on the inlet side to increase the heat value close to the furnace door.
And M3, opening the operation heat measuring and insulating cover of the R1 and R2 intermediate roller way 1 to increase the operation heat measuring and radiating temperature.
M4. the temperature difference between the two sides of the strip steel is 5 ℃ after the strip steel is rough rolled and is detected by an instrument, which meets the requirement.
M5. the difference between the two sides of the finish rolling outlet temperature strip steel is found by observing a finish rolling instrument to be 4 ℃, which meets the process requirement of steel grade.
Example 2
And M1, the temperature difference between the transition steel grade L and the steel grade G to be rolled is 150 ℃.
M2, adjusting the valve of the soaking section according to S2, opening a row of manual butterfly valves of the gas on the furnace door side of the soaking section burner by 90-100%, and opening degrees of the manual butterfly valves of the other burners by 60-70% on the inlet side to increase the heat value close to the furnace door.
And M3, opening the operation heat measuring and insulating cover of the R1 and R2 intermediate roller way 1 to increase the operation heat measuring and radiating temperature. Therefore, the transmission side is heated by adopting asymmetric heating, and the temperature of the supplementary transmission side is 20 ℃.
M4. the difference between the two sides of the strip steel of the outlet temperature of the finish rolling is 5 ℃ by observing the finish rolling instrument, which meets the process requirement of the steel grade.
The working principle and the using process of the invention are as follows: when the invention is used, the opening degree of the outlet furnace door side of the flat flame burner is increased, a row of gas manual butterfly valves at the furnace door side of the soaking zone burner are opened by 90-100 percent, the opening degree of other burner gas manual butterfly valves at the inlet side is 60-70 percent, so that the heat value close to the furnace door is increased, the load distribution of the heating furnace two adding sections and the soaking zone is adjusted, the opening degree of a heating furnace two adding section burner gas regulating valve is reduced by 10-20 percent, the opening degree of the soaking zone burner gas regulating valve is improved by 5-10 percent, the temperature gradient between the heating sections is reduced, thereby reducing the transverse temperature difference caused by the temperature difference of each section in the furnace, changing the rough rolling temperature diffusion form, and utilizing the rough rolling heat preservation cover body a3 and two cylinders a10 at the left side and the right side of the rough rolling heat preservation cover body b4 on the roller table 1 of a rough rolling area, the cylinder telescopic rods of the two cylinders a10 move downwards to drive the connecting block a8 and the connecting block b9 to move downwards, thereby can open the rough rolling heat preservation cover body a3 and the rough rolling heat preservation cover body b4 of roll table 1 both sides alone, and the finish rolling heat preservation cover body 12 on the roll table 1 is linked with the finish rolling to rough rolling, opens 250 and gives other 350mm, and the operating side is opened for the heat dissipation of operating side billet is accelerated, makes the both sides difference in temperature reduce.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a control belted steel horizontal both sides difference in temperature device which characterized in that: the device comprises a rough rolling heat preservation cover, the rough rolling heat preservation cover comprises a roller way (1) and a rough rolling heat preservation cover body, the rough rolling heat preservation cover body comprises a rough rolling heat preservation cover body a (3) and a rough rolling heat preservation cover body b (4), one surface of the rough rolling heat preservation cover body a (3) opposite to one surface of the rough rolling heat preservation cover body b (4) is hinged to the two side surfaces of the roller way (1) through a hinge, the left and right side surfaces of the rough rolling heat preservation cover body a (3) and the rough rolling heat preservation cover body b (4) are respectively fixedly connected with the opposite surfaces of the two connecting blocks a (8), the front surface of the connecting block a (8) is fixedly connected with the lower surface of the connecting block b (9) through a pin shaft a, the lower surface of the connecting block b (9) is fixedly connected with an air cylinder telescopic rod of an air cylinder a (10), and the air cylinder a (10) is arranged on the upper surface of the fixing block (11).
2. The device for controlling the temperature difference of the two transverse sides of the strip steel according to claim 1, which is characterized in that: the rough rolling heat preservation cover body a (3) and the rough rolling heat preservation cover body b (4) are fixedly connected with the left side face and the right side face of the two connecting plates (5) respectively, and the lower surfaces of the two connecting plates (5) are attached to the lower surfaces of the inner walls of the clamping grooves formed in the upper surfaces of the rough rolling heat preservation cover body a (3) and the rough rolling heat preservation cover body b (4) respectively.
3. The device for controlling the temperature difference at two lateral sides of the strip steel according to claim 1, which is characterized in that: the device also comprises a finish rolling heat preservation cover which is arranged at the rear end of the rough rolling heat preservation cover, the finish rolling heat preservation cover comprises a roller way (1) and a fixing plate (17), the right side surface of the roller way (1) is fixedly connected with the left side surface of the fixing plate (17), the left side and the right side of the upper surface of the fixing plate (17) are respectively provided with two clamping grooves, the inner walls of the clamping grooves are attached to the outer surfaces of the clamping blocks, the upper surface of the clamping block is fixedly connected with the lower surface of the finish rolling heat-preserving cover body (12), the right side of the lower surface of the finish rolling heat-preserving cover body (12) is fixedly connected with the upper surface of the connecting block c, the front surface of the connecting block c is fixedly connected with the lower surface of the connecting block d through a pin shaft b, the lower surface of the connecting block d is fixedly connected with a cylinder telescopic rod of a cylinder b (16), and the cylinder b (16) is arranged on the upper surface of the roller way (1).
4. The device for controlling the temperature difference of the two transverse sides of the strip steel according to claim 3, is characterized in that: the lower surface of the finish rolling heat-insulating cover body (12) is attached to the upper surface of the limiting block (15), and the right side surface of the limiting block (15) is fixedly connected with the left side surface of the roller way (1).
5. The device for controlling the temperature difference at two lateral sides of the strip steel according to claim 4, is characterized in that: the device also comprises an edge heater, wherein the edge heater is arranged at the rear end of the finish rolling heat preservation cover.
6. The device for controlling the temperature difference at two lateral sides of the strip steel according to claim 5, is characterized in that: the pair of heating bodies of the edge heater can move in opposite directions or in a separated direction, so that the temperature of the two edges of the strip steel can be controlled independently.
7. A method for controlling the temperature difference of two transverse sides of strip steel is characterized in that the technical scheme is implemented as follows:
s1, increasing the opening degree of a furnace door side at an outlet of a flat flame burner, opening a row of coal gas manual butterfly valves at the furnace door side of a soaking zone burner by 90-100%, and opening degrees of other burner coal gas manual butterfly valves at an inlet side by 60-70% to increase the heat value close to the furnace door;
s2, adjusting the load distribution of the second heating section and the soaking section of the heating furnace, reducing the opening degree of a burner gas regulating valve of the second heating section of the heating furnace by 10-20%, improving the opening degree of a burner gas regulating valve of the soaking section by 5-10%, and reducing the temperature gradient between the heating sections so as to reduce the transverse temperature difference caused by the temperature difference of each section in the heating furnace;
s3, the rough rolling temperature is changed in a diffusing mode, two cylinders a (10) on the left side and the right side of a rough rolling heat-insulating cover body a (3) and a rough rolling heat-insulating cover body b (4) are utilized on a roller way (1) in a rough rolling area, cylinder telescopic rods of the two cylinders a (10) move downwards to drive a connecting block a (8) and a connecting block b (9) to move downwards, and therefore the rough rolling heat-insulating cover body a (3) and the rough rolling heat-insulating cover body b (4) on the two sides of the roller way (1) can be opened independently.
8. The method of controlling the temperature difference across the transverse direction of the strip as claimed in claim 7, further comprising:
s4, the finish rolling heat preservation cover body (12) on the rough rolling and finish rolling link roller way (1) is opened for 250-350mm, and the operation side is opened, so that the heat dissipation of the blank plate on the operation side is accelerated, and the temperature difference between the two sides is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111413329.7A CN114210739B (en) | 2021-11-25 | 2021-11-25 | Method and device for controlling temperature difference of two lateral sides of strip steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111413329.7A CN114210739B (en) | 2021-11-25 | 2021-11-25 | Method and device for controlling temperature difference of two lateral sides of strip steel |
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| CN114210739A true CN114210739A (en) | 2022-03-22 |
| CN114210739B CN114210739B (en) | 2023-05-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554812A (en) * | 1983-09-08 | 1985-11-26 | Voest-Alpine Aktiengesellschaft | Heat shield for a rolling mill |
| JPH05123731A (en) * | 1991-10-29 | 1993-05-21 | Kawasaki Steel Corp | Heat dissipation preventing method for high temperature steel stock end part |
| CN2815536Y (en) * | 2005-07-14 | 2006-09-13 | 鞍钢集团新钢铁有限责任公司 | On-line flame concurrent heating device for medium-thin sheet contnuous casting billet direct rolling |
| KR20110072963A (en) * | 2009-12-23 | 2011-06-29 | 주식회사 포스코 | Apparatus for equalizing temperature of hot rolling strip and method thereof |
| CN107876564A (en) * | 2017-12-15 | 2018-04-06 | 唐山全丰薄板有限公司 | A kind of ferrite rolling control device and its control technique |
| CN210358544U (en) * | 2019-04-11 | 2020-04-21 | 山西大学 | Online heat preservation device of hot rolling aluminum plate area |
| CN212310426U (en) * | 2020-02-27 | 2021-01-08 | 北京首钢股份有限公司 | Push away base rollgang and hot rolling slab cover that keeps warm |
-
2021
- 2021-11-25 CN CN202111413329.7A patent/CN114210739B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554812A (en) * | 1983-09-08 | 1985-11-26 | Voest-Alpine Aktiengesellschaft | Heat shield for a rolling mill |
| JPH05123731A (en) * | 1991-10-29 | 1993-05-21 | Kawasaki Steel Corp | Heat dissipation preventing method for high temperature steel stock end part |
| CN2815536Y (en) * | 2005-07-14 | 2006-09-13 | 鞍钢集团新钢铁有限责任公司 | On-line flame concurrent heating device for medium-thin sheet contnuous casting billet direct rolling |
| KR20110072963A (en) * | 2009-12-23 | 2011-06-29 | 주식회사 포스코 | Apparatus for equalizing temperature of hot rolling strip and method thereof |
| CN107876564A (en) * | 2017-12-15 | 2018-04-06 | 唐山全丰薄板有限公司 | A kind of ferrite rolling control device and its control technique |
| CN210358544U (en) * | 2019-04-11 | 2020-04-21 | 山西大学 | Online heat preservation device of hot rolling aluminum plate area |
| CN212310426U (en) * | 2020-02-27 | 2021-01-08 | 北京首钢股份有限公司 | Push away base rollgang and hot rolling slab cover that keeps warm |
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| Publication number | Publication date |
|---|---|
| CN114210739B (en) | 2023-05-30 |
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