CN114210739B - Method and device for controlling temperature difference of two lateral sides of strip steel - Google Patents
Method and device for controlling temperature difference of two lateral sides of strip steel Download PDFInfo
- Publication number
- CN114210739B CN114210739B CN202111413329.7A CN202111413329A CN114210739B CN 114210739 B CN114210739 B CN 114210739B CN 202111413329 A CN202111413329 A CN 202111413329A CN 114210739 B CN114210739 B CN 114210739B
- Authority
- CN
- China
- Prior art keywords
- heat preservation
- preservation cover
- rough rolling
- cover body
- rolling heat
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- 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 strip steel hot rolling, in particular to a method and a device for controlling temperature difference between two lateral 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 the opposite surfaces of a rough rolling heat preservation cover body a and a rough rolling heat preservation cover body b through hinges, the left side surface and the right side surface of the rough rolling heat preservation cover body a and the rough rolling heat preservation cover body b are respectively fixedly connected with the opposite surfaces 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 a cylinder telescopic rod of a cylinder a, the 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 between two sides of the strip steel is controlled within +/-8 ℃. The deviation scrap steel caused by the overlarge temperature difference is reduced by 50 percent, and the asymmetric flatness blocking and wedge-shaped blocking caused by the temperature difference at two sides are reduced by 30 percent.
Description
Technical Field
The invention belongs to the technical field of strip steel hot rolling, and particularly relates to a method and a device for controlling temperature difference of two lateral sides of strip steel.
Background
Due to the heat dissipation problems of the furnace body structure and the strip steel, the strip steel transversely has a temperature difference, and particularly, the two side edge parts can have a temperature difference of 10-30 ℃. Some temperature-sensitive strip steel can generate defects such as cracks, deviation, wedge-shaped out-of-tolerance and the like, such as high-grade non-oriented silicon steel, high-strength thin gauge and other steel types with strict technical conditions and process systems. Defects seriously affect the quality and performance of the strip steel and the use of the next working procedure. Therefore, the invention discloses a method for reducing the temperature difference of two sides of strip steel according to field practice. The method is particularly suitable for the problem of head stability of steel types with large setting deviation and unstable heads, such as high-strength thin specification, high-silicon thin specification and the like.
Aiming at the problems existing in the prior art, the invention provides a method and a device for reducing the two sides of strip steel, which are used for solving the quality and performance problems caused by overlarge temperature difference at the two sides of the strip steel in the prior art. The method is particularly suitable for the problem of head stability of steel types with large setting deviation and unstable heads, such as high-strength thin specification, high-silicon thin specification and the like. And counting the transverse temperature of the strip steel according to the field data to obtain the temperature of the outlet furnace door side lower than the temperature of the strip steel at the inlet furnace door side, wherein the proportion of the strip steel occupying the whole steel is more than 95 percent.
Disclosure of Invention
To solve the problems set forth in the background art. The invention provides a method and a device for controlling the temperature difference of two lateral sides of strip steel, which have the characteristic of reducing the temperature difference of two lateral sides of strip steel.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a control belted steel horizontal both sides difference in temperature device, the device includes the rough rolling heat preservation cover, the rough rolling heat preservation cover includes roll table and rough rolling heat preservation cover body, the rough rolling heat preservation cover body includes rough rolling heat preservation cover body a and rough rolling heat preservation cover body b, the relative one side of rough rolling heat preservation cover body a and rough rolling heat preservation cover body b pass through the hinge articulated in the both sides face of roll table, the left and right sides face of rough rolling heat preservation cover body a and rough rolling heat preservation cover body b respectively with the relative one side fixed connection of two connecting block a, the front of connecting block a passes through the lower fixed surface of round pin axle a and connecting block b and is connected, connecting block b's lower surface and cylinder telescopic link fixed connection of cylinder a, cylinder a sets up the upper surface at the fixed block.
Optionally, the opposite side of the rough rolling heat preservation cover body a and the rough rolling heat preservation cover body b is fixedly connected with the left side face and the right side face of the two connecting plates respectively, and the lower surfaces of the two connecting plates 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 preservation cover body a and the rough rolling heat preservation cover body b.
Optionally, the device still includes 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 is laminated with the surface 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 connecting block c's upper fixed surface are connected, connecting block c's front is through the lower fixed surface of round pin axle b and connecting block d, connecting block d's lower surface and cylinder telescopic link fixed connection of cylinder b, cylinder b sets up the upper surface at the roll table.
Optionally, the lower surface of finish rolling heat preservation cover body is laminated with the upper surface of stopper, the right flank of stopper and the left surface fixed connection of roll table.
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 can do opposite or opposite movement to control temperature of two edges of the strip steel independently.
Based on the same inventive concept, the invention also provides a method for controlling the temperature difference of two lateral sides of the strip steel, and the technical scheme comprises the following implementation steps:
s1, the opening degree of the furnace door side of an outlet of a flat flame burner is increased, a row of gas manual butterfly valves on the furnace door side of a soaking section burner are opened by 90% -100%, and the opening degree of other burner gas manual butterfly valves on the inlet side is opened by 60% -70% so that the heat value close to the furnace door is increased;
s2, adjusting load distribution of a second heating section and a soaking section of the heating furnace, reducing the opening degree of a burner gas regulating valve of the second heating section by 10% -20%, improving the opening degree of the burner gas regulating valve of the soaking section by 5% -10%, and reducing the temperature gradient between the heating sections, so that the transverse temperature difference caused by the temperature difference of each section in the heating furnace is reduced;
s3, changing a rough rolling temperature diffusing form, utilizing a rough rolling heat preservation cover body a and two cylinders a on the left side and the right side of a rough rolling heat preservation cover body b on a roller way in a rough rolling area, and enabling cylinder telescopic rods of the two cylinders a to move downwards to drive a connecting block a and a connecting block b to move downwards, so that the rough rolling heat preservation cover body a and the rough rolling heat preservation cover body b on the two sides of the roller way can be opened independently. Optionally, the method further comprises:
s4, opening a finish rolling heat preservation cover body on a rough rolling and finish rolling linking roller way by 250-350mm, and opening an operation side, so that heat dissipation of a blank plate at the operation side is quickened, and temperature difference at two sides is reduced.
Compared with the prior art, the invention has the beneficial effects that:
the invention controls the temperature difference between two sides of the strip steel within +/-8 ℃. The deviation scrap steel caused by the overlarge temperature difference is reduced by 50 percent, and the asymmetric flatness blocking and wedge-shaped blocking caused by the temperature difference at two sides are reduced by 30 percent.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of a cross-sectional structure of a rough rolling heat preservation cover body of the invention;
FIG. 2 is a schematic diagram showing a cross-sectional structure of a rough rolling and finish rolling connecting roller way heat-insulating cover in the invention.
In the figure: 1. a roller way; 3. rough rolling the heat preservation cover body a; 4. rough rolling the heat preservation cover body b; 5. a connecting plate; 8. a connecting block a; 9. a connecting block 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 a fixing plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-2, the present invention provides the following technical solutions: the device comprises a rough rolling heat-preserving cover, the rough rolling heat-preserving cover comprises a roller way 1 and a rough rolling heat-preserving cover body, the rough rolling heat-preserving cover body comprises a rough rolling heat-preserving cover body a3 and a rough rolling heat-preserving cover body b4, opposite sides of the rough rolling heat-preserving cover body a3 and the rough rolling heat-preserving 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-preserving cover body a3 and the rough rolling heat-preserving cover body b4 are fixedly connected with opposite sides of two connecting blocks a8 respectively, the front surface of the connecting block a8 is fixedly connected with the lower surface of a connecting block b9 through a pin shaft a, the lower surface of the connecting block b9 is fixedly connected with a cylinder telescopic rod of a cylinder a10, and the cylinder a10 is arranged on the upper surface of a fixed block 11.
Specifically, through setting up the opposite one side of rough rolling heat preservation cover body a3 and rough rolling heat preservation cover body b4 respectively with the left surface and the right flank fixed connection of two connecting plates 5, and the lower surface of two connecting plates 5 is laminated with the lower surface of the draw-in groove inner wall that rough rolling heat preservation cover body a3 and rough rolling heat preservation cover body b4 upper surface were seted up respectively, make the connecting plate 5 of rough rolling heat preservation cover body a3 left surface take in the spout of rough rolling heat preservation cover body b4 upper surface, the connecting plate 5 of rough rolling heat preservation cover body b4 right flank takes in the spout of rough rolling heat preservation cover body a3 upper surface, thereby support each other, and do not influence the lifting work of rough rolling heat preservation cover body a3 and rough rolling heat preservation cover body b 4.
As an optional implementation mode, the device further comprises a finish rolling heat preservation cover, the finish rolling heat preservation cover 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 fixed plate 17, the right side surface of the roller way 1 is fixedly connected with the left side surface of the fixed plate 17, two clamping grooves are respectively formed in the left side and the right side of the upper surface of the fixed plate 17, the inner wall of each clamping groove is attached to the outer surface of a clamping block, the upper surface of each clamping block is fixedly connected with the lower surface of the finish rolling heat preservation cover body 12, the right side of the lower surface of the finish rolling heat preservation cover body 12 is fixedly connected with the upper surface of a connecting block c, the front surface of the connecting block c is fixedly connected with the lower surface of a 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 b16, and the cylinder b16 is arranged on the upper surface of the roller way 1.
Specifically, through setting up the laminating of the lower surface of finish rolling heat preservation cover body 12 and the upper surface 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 the finish rolling heat preservation cover body 12 descends simultaneously.
Specifically, the device also comprises an edge heater, and the edge heater is arranged at the rear end of the finish rolling heat preservation cover.
The side heater b13 can adjust the heating width according to the temperature difference condition of two sides of the rough rolling outlet intermediate blank, thereby improving the temperature difference of two sides, simultaneously enabling the side heater b13 to heat on one side, realizing the compensation of low temperature of one side of the strip steel,
more preferably, the pair of heating bodies of the edge heater can do opposite or opposite movement to control the temperature of the two edges of the strip steel independently. The control of the unilateral heating area can be realized, the heating area is increased or reduced according to the actual requirement, and meanwhile, the coils at the two sides of the side heater b13 are adjustable in different power and different in heating temperature at the two sides.
In particular to a method and a device for controlling temperature difference between two lateral sides of strip steel, and the technical scheme 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 tapping temperature difference is not more than +/-100 ℃, so that the transverse temperature difference of the blank plate caused by the too large temperature difference in the furnace is prevented.
S2, the opening degree of the furnace door side of the flat flame burner outlet is increased, a row of gas manual butterfly valves on the furnace door side of the soaking section burner are opened by 90% -100%, and the opening degree of other burner gas manual butterfly valves on the inlet side is opened by 60% -70%, so that the heat value close to the furnace door is increased.
S3, adjusting load distribution of a second heating section and a soaking section of the heating furnace, reducing the opening degree of a burner gas regulating valve of the second heating section by 10% -20%, improving the opening degree of the 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 form, wherein a rough rolling heat preservation cover body a3 and two cylinders a10 on the left side and the right side of a rough rolling heat preservation cover body b4 are utilized on a roller way 1 in a rough rolling area, cylinder telescopic rods of the two cylinders a10 move downwards to drive a connecting block a8 and a connecting block b9 to move downwards, and therefore the rough rolling heat preservation cover body a3 and the rough rolling heat preservation cover body b4 on the two sides of the roller way 1 can be opened independently.
S5, opening the finish rolling heat preservation cover body 12 on the rough rolling and finish rolling linking roller way 1 by 250-350mm, and opening the operation side, so that heat dissipation of the blank plate at the operation side is quickened, and the temperature difference at two sides is reduced.
The steel grade G is sensitive to the transverse temperature, and when the transverse temperature difference of two sides exceeds 20 ℃, the index name Af is rapidly reduced, and the index name Af is 40% different from the index name Af of the steel grade G 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 OS Above T DS The index Af is about 40% higher at 20+/-5 ℃, the yield is low, and the production cost is affected, so that the experimental process adjustment and the equipment adjustment are carried out for the G steel grade, and the following scheme is formulated:
example 1
And M1, discharging the transition steel grade W at a temperature lower than 80 ℃ of the G steel grade to be rolled.
And M2, adjusting the soaking section valve according to the step S2, opening a row of gas manual butterfly valve at the furnace door side of the soaking section burner by 90% -100%, and opening other burner gas manual butterfly valves at the inlet side by 60% -70% to increase the heat value close to the furnace door.
And M3, opening an operation measuring heat preservation cover of the roller way 1 in the middle of R1 and R2 to increase the operation measuring and releasing temperature.
The M4. strip steel is detected by an instrument after rough rolling, and the temperature difference of the two sides of the strip steel is 5 ℃ and meets the requirements.
M5. the observation of a finish rolling instrument shows that the two sides of the strip steel at the finish rolling outlet temperature differ by 4 ℃ so as to meet the technological requirements of the steel grade.
Example 2
M1, the temperature difference between the transition steel grade L and the steel grade G to be rolled is 150 ℃.
And M2, adjusting the soaking section valve according to the step S2, opening a row of gas manual butterfly valve at the furnace door side of the soaking section burner by 90% -100%, and opening other burner gas manual butterfly valves at the inlet side by 60% -70% to increase the heat value close to the furnace door.
And M3, opening an operation measuring heat preservation cover of the roller way 1 in the middle of R1 and R2 to increase the operation measuring and releasing temperature. Therefore, the transmission side is heated by adopting asymmetric heating, and the temperature of the transmission side is supplemented by 20 ℃.
M4. the finishing gauge is observed to find that the two sides of the strip steel at the finishing outlet temperature differ by 5 ℃ so as to meet the technological requirements of the steel grade.
The working principle and the using flow of the invention are as follows: when the dual-stage heating furnace is used, the opening degree of the furnace door side of the flat flame burner outlet is increased, a row of gas manual butterfly valve at the furnace door side of the soaking stage burner is opened by 90% -100%, the opening degree of the other burner gas manual butterfly valve at the inlet side is opened by 60% -70% so as to increase the heat value close to the furnace door, the load distribution of a second adding stage and the soaking stage of the heating furnace is adjusted, the opening degree of a gas regulating valve at the second adding stage of the heating furnace is reduced by 10% -20%, the opening degree of the gas regulating valve at the soaking stage of the heating furnace is increased by 5% -10%, the temperature gradient between the heating stages is reduced, the transverse temperature difference caused by the temperature difference in each stage of the furnace is reduced, the change of the rough rolling temperature diffusion mode is reduced, the rough rolling heat preservation cover body a3 and two cylinders a10 at the left side and right side of a rough rolling heat preservation cover body b4 are utilized on a roller table 1 in a rough rolling region, the cylinder telescopic rods of the two cylinders a10 move downwards to drive a connecting block a8 and a connecting block b9 to move downwards, accordingly the rough rolling heat preservation cover body a3 at the two sides of the roller table 1 and the rough rolling heat preservation cover body b4 are independently opened, the rough rolling heat preservation cover body 12 on the two sides and the roller table heat preservation cover body is opened, the rough rolling heat preservation cover body is opened, the temperature difference is opened, and the temperature difference between the two sides is reduced, and the heat preservation plate is opened is 250 mm, and the heat preservation plate is opened, and is operated, and is cooled.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides an utilize device control belted steel horizontal both sides difference in temperature method, the device includes rough rolling heat preservation cover and finish rolling heat preservation cover, rough rolling heat preservation cover includes roll table (1) and rough rolling heat preservation cover body, rough rolling heat preservation cover body includes rough rolling heat preservation cover body a (3) and rough rolling heat preservation cover body b (4), the opposite one side of rough rolling heat preservation cover body a (3) and rough rolling heat preservation cover body b (4) pass through the hinge in the both sides face of roll table (1), the left and right sides face of rough rolling heat preservation cover body a (3) and rough rolling heat preservation cover body b (4) respectively with the opposite one fixed connection of two connecting blocks a (8), the front of connecting block a (8) is through round pin axle a and the lower surface fixed connection of connecting block b (9), the lower surface of connecting block b (9) and the cylinder telescopic link fixed connection of cylinder a (10), the finish rolling heat preservation cover is located the rear end of rough rolling heat preservation cover, including finish rolling heat preservation cover body (12), its characterized in that:
s1, the opening degree of the furnace door side of an outlet of a flat flame burner is increased, a row of gas manual butterfly valves on the furnace door side of a soaking section burner are opened by 90% -100%, and the opening degree of other burner gas manual butterfly valves on the inlet side is opened by 60% -70% so that the heat value close to the furnace door is increased;
s2, adjusting load distribution of a second heating section and a soaking section of the heating furnace, reducing the opening degree of a burner gas regulating valve of the second heating section by 10% -20%, improving the opening degree of the burner gas regulating valve of the soaking section by 5% -10%, and reducing the temperature gradient between the heating sections, so that the transverse temperature difference caused by the temperature difference of each section in the heating furnace is reduced;
s3, changing a rough rolling temperature diffusion mode, utilizing a rough rolling heat preservation cover body a (3) and two air cylinders a (10) on the left side and the right side of a rough rolling heat preservation cover body b (4) on a roller way (1) in a rough rolling area, enabling an air cylinder telescopic rod of the two air cylinders a (10) to move downwards to drive a connecting block a (8) and a connecting block b (9) to move downwards, and accordingly opening the rough rolling heat preservation cover body a (3) and the rough rolling heat preservation cover body b (4) on the two sides of the roller way (1) independently.
2. The method of controlling a temperature difference across a strip of claim 1, further comprising:
s4, a finish rolling heat preservation cover body (12) on a rough rolling and finish rolling linking roller way is opened by 250-350mm, and an operation side is opened, so that heat dissipation of a blank plate at the operation side is accelerated, and temperature difference at 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114210739A CN114210739A (en) | 2022-03-22 |
| CN114210739B true CN114210739B (en) | 2023-05-30 |
Family
ID=80698284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111413329.7A Active CN114210739B (en) | 2021-11-25 | 2021-11-25 | Method and device for controlling temperature difference of two lateral sides of strip steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114210739B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT377712B (en) * | 1983-09-08 | 1985-04-25 | Voest Alpine Ag | PLANT FOR THE HOT ROLLING OF TAPE OR TABLED ROLLED GOODS |
| 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 |
| KR101147900B1 (en) * | 2009-12-23 | 2012-05-24 | 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN114210739A (en) | 2022-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5125948A (en) | Heat conditioning chamber | |
| CN111470760A (en) | Production method of 22 mm super-thick float glass | |
| CN103551394A (en) | Control method for side reverse tilting on thickness profile of low-silicon non-oriented silicon steel | |
| CN114210739B (en) | Method and device for controlling temperature difference of two lateral sides of strip steel | |
| CN110340144A (en) | A kind of hot rolling method of thin gauge ultra high silicon silicon steel | |
| CN110295338A (en) | A kind of stable strip enters the control method of zinc pot temperature | |
| CN106091715B (en) | A kind of heating furnace burning steel temperature control method for fully automatic | |
| CN103586294B (en) | The section cooling method of slab, hot continuous rolling production line and laminar cooling system thereof | |
| CN114833195A (en) | Cold rolling method for producing high-grade non-oriented silicon steel based on UCMW cold continuous rolling mill | |
| CN117505548A (en) | Control method for smooth surface rolling of thin-specification double-side waves of cold continuous rolling mill | |
| CN107828951B (en) | Method and device for manufacturing cold-rolled high-strength steel | |
| US20230203612A1 (en) | Method for the open-loop or closed-loop control of the temperature of a steel strip during hot working in a hot strip mill | |
| US1999588A (en) | Apparatus for annealing window glass | |
| CN110153179A (en) | The process of the fiery bearing steel of cooling rolling two | |
| CN109092893A (en) | 60 meters of overlength Plate Production techniques | |
| CN101450353A (en) | Steel-plate shape control method | |
| CN108955290A (en) | Dynamic correction method and device for double-cross amplitude limiting system of heating furnace | |
| CN113430360A (en) | Control method for annealing transition of high-strength steel plate | |
| CN106591554A (en) | One-time cold-rolling method capable of improving magnetic performance of low-temperature high-magnetic-induction oriented silicon steel | |
| CN111763811B (en) | Control method for reducing residual stress of special-shaped steel rail for magnetic levitation railway | |
| CN114632824B (en) | Method for controlling shape of 10-12mm thick steel plate of bridge steel | |
| WO2018062749A1 (en) | Apparatus for manufacturing steel plate having excellent isotropy, and steel plate manufactured using same | |
| CN115745378B (en) | Float glass tin bath top cover | |
| CN114214485B (en) | One-fire hot charging heat treatment process for ferrite stainless steel hot-rolled plate | |
| CN111001661B (en) | Method for optimizing steel strip structure in middle slab rolling process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |