CN106735035A - A kind of method for reducing slab crackle - Google Patents
A kind of method for reducing slab crackle Download PDFInfo
- Publication number
- CN106735035A CN106735035A CN201710021137.9A CN201710021137A CN106735035A CN 106735035 A CN106735035 A CN 106735035A CN 201710021137 A CN201710021137 A CN 201710021137A CN 106735035 A CN106735035 A CN 106735035A
- Authority
- CN
- China
- Prior art keywords
- temperature
- slab
- surface temperature
- nozzle
- corner
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The present invention relates to steel-making continuous casting technical field, more particularly to a kind of method for reducing slab crackle.Methods described includes：According to the brittle zone temperature range of current cast slab, target temperature is determined；The target temperature is higher than the maximum temperature in the brittle zone temperature range；Obtain the surface temperature in the slab corner in conticaster bending section region；Judge the surface temperature whether less than the target temperature；When the surface temperature is less than the target temperature, the flow of the nozzle for the slab corner of casting is reduced.The present invention is realized and reduces the technique effect that slab crackle occurs.
Description
Technical field
The present invention relates to steel-making continuous casting technical field, more particularly to a kind of method for reducing slab crackle.
Background technology
At present, due to the high-temperature brittleness of continuous casting steel billet, the surface of casting slab is caused to be likely to occur crackle.Wherein, slab
Surface transverse cracks are typically normal to direction of casting, and are generally present in leptoprosopy edge or corner.Crack length between 1mm-10mm,
It is deep at subcutaneous several millimeters, hot rolled plate edge fault of different shapes can be caused.
There is the technical problem that crackle how is reduced in casting process in the prior art.
The content of the invention
A kind of method for reducing slab crackle is the embodiment of the invention provides, for reducing slab crackle.
A kind of method for reducing slab crackle, including：
According to the brittle zone temperature range of current cast slab, target temperature is determined；The target temperature is higher than described
Maximum temperature in brittle zone temperature range；
Obtain the surface temperature in the slab corner in conticaster bending section region；
Judge the surface temperature whether less than the target temperature；
When the surface temperature is less than the target temperature, the stream of the nozzle for the slab corner of casting is reduced
Amount.
Optionally, the surface temperature in the slab corner in conticaster bending section region is obtained, including：
The surface temperature is detected by the non-contact type thermodetector for being arranged on fan-shaped section gateway.
Optionally, the non-contact type thermodetector is arranged on apart from the position of 0.5 meter -2 meters of the slab, and deviation angle
Less than or equal to 10 °.
Optionally, the non-contact type thermodetector has a water-cooling circulating system, and the non-contact type thermodetector outside
It is provided with metal protection protector.
Optionally, the first end in the metal protection protector is provided with scavenging conduit, for from the first end to the gold
Aerosol purging is carried out in category protective case.
Optionally, methods described also includes：
Judge whether the surface temperature is reliable；
When judging that the surface temperature is unreliable, at least one of nozzle nozzle is closed.
Optionally, whether the surface temperature is judged less than the target temperature, including：
Whether each predetermined interval, judge the surface temperature of newest acquisition less than target temperature.
Optionally, the predetermined interval is the arbitrary value between 0.1S-5S.
Optionally, the flow of the nozzle is reduced no more than the 50% of the nozzle initial flow.Optionally, reduce described
50% of the flow of nozzle no more than the nozzle initial flow.
Beneficial effects of the present invention are as follows：
In embodiments of the present invention, determined higher than crisp according to the brittle zone temperature range of current slab of casting first
The target temperature of the maximum temperature in property area temperature range.Then the surface temperature in slab corner in conticaster bending section region is obtained
Degree.When judging that surface temperature is less than target temperature, the flow of the nozzle for slab corner of casting is reduced.Sprayed by reducing
Mouth flow, just reduces the secondary coolingwater in casting corner, and then improves corner temperature, makes corner temperature be difficult to fall into brittle zone
Temperature range and cause corner crackle occur.So, by the method in the embodiment of the present invention, corner slab crackle can be reduced
Generation.
Brief description of the drawings
Fig. 1 is the method flow diagram of the reduction slab crackle of the embodiment of the present invention；
Fig. 2 is the brittle zone temperature range schematic diagram of the embodiment of the present invention one；
Fig. 3 is that the embodiment of the present invention one closes nozzle schematic diagram (towards slab outer arc direction)；
Fig. 4 is that the embodiment of the present invention is another closes nozzle schematic diagram (towards slab outer arc direction).
Specific embodiment
A kind of method for reducing slab crackle is the embodiment of the invention provides, for reducing slab crackle.
In embodiments of the present invention, determined higher than crisp according to the brittle zone temperature range of current slab of casting first
The target temperature of the maximum temperature in property area temperature range.Then the surface temperature in slab corner in conticaster bending section region is obtained
Degree.When judging that surface temperature is less than target temperature, the flow of the nozzle for slab corner of casting is reduced.Sprayed by reducing
Mouth flow, just reduces the secondary coolingwater in casting corner, and then improves corner temperature, makes corner temperature be difficult to fall into brittle zone
Temperature range and cause corner crackle occur.So, by the method in the embodiment of the present invention, corner slab crackle can be reduced
Generation
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is refer to, is the method flow diagram of reduction slab crackle in the embodiment of the present invention.Side in the embodiment of the present invention
Method can be used in steel-making continuous casting secondary cooling water flow control system, and the method includes：
S101：According to the brittle zone temperature range of current cast slab, target temperature is determined.
S102：Obtain the surface temperature in the slab corner in conticaster bending section region.
S103：Judge the surface temperature whether less than the target temperature.
S104：When the surface temperature is less than the target temperature, the nozzle for the slab corner of casting is reduced
Flow.
Specifically, if being previously stored with the brittle zone temperature range of each steel grade, can currently be poured with direct access
The corresponding brittle zone temperature range of cast panel base, determines target temperature.Or, if can also be obtained by high temperature tension test
Brittle zone temperature range, the present invention is not particularly limited.
In S101, it is thus necessary to determine that go out target temperature.Due to there is error when obtaining brittle zone temperature range, while in order to
Surface temperature is avoided easily to fall into brittle zone temperature range, in embodiments of the present invention, the target temperature determined should be higher than that crisp
The maximum temperature of property area temperature range.
So that current casting slab is for the steel grade of carbon content 0.10% as an example.High temperature is carried out to the steel grade in thermal simulation machine
Stretching experiment, determines the steel grade contraction percentage of area and varies with temperature curve.Assuming that measurement result is as shown in Figure 2.With section shrinkage
Rate is defined less than 60%, then the brittle zone temperature range of the steel grade is 700 DEG C -925 DEG C.Assuming that experimentation has about 15
DEG C error, accordingly, it is determined that target temperature be 940 DEG C
Next, in S102, obtaining the surface temperature in the slab corner in conticaster bending section region.Specifically,
In embodiments of the present invention, S102 can be realized by following process：
The surface temperature is detected by the non-contact type thermodetector for being arranged on fan-shaped section gateway.
Specifically, in order to obtain the temperature in slab corner, non-contact type thermodetector is arranged on fan-shaped section gateway.Its
In, the temperature if necessary to detect outer arc corner, and then reduce the crackle in outer arc corner, then in the fan-shaped section of outer arc angle portion direction
Setup of entrances and exits one or more non-contact type thermodetectors.The application those of ordinary skill in the art can be according to actually entering
Row is set, and the present invention is not particularly limited.During implementing, such as 2-10 infrared colorimetric temperature measure can be set and used
In detection outer arc corner temperature.
In embodiments of the present invention, when non-contact type thermodetector is set, non-contact type thermodetector is arranged on apart from slab
0.5-2 meters of position, deviation angle be less than 10 °, and as far as possible make the corner of non-contact type thermodetector perpendicular alignmnet slab and
The centre position on surface.
The temperature of environment is very high where non-contact type thermodetector, in order to avoid high temperature failure non-contact type thermodetector,
Non-contact type thermodetector in embodiments of the present invention has water-cooling circulating system, and then takes away contactless survey by water circulation
The too high temperature of warm instrument, reduces the temperature of non-contact type thermodetector.Meanwhile, non-contact type thermodetector is arranged on metal protection protector
In, to isolate high temperature.
Further, in order to avoid in the environment of place water smoke to non-contact type thermodetector disturb, protective case first end also
It is provided with scavenging conduit.Scavenging conduit in the embodiment of the present invention is merogenesis telescoping tube, and maximal dilation length is 2 meters.Scavenging conduit is from
One end to purging aerosol in metal protection protector, so as to the aerosol in protective case be blown out from the other end different from first end.
Next, in S103, judging surface temperature whether less than target temperature.In one implementation, Ke Yishi
When whether judge surface temperature less than target temperature, namely often obtain a surface temperature, be judged as once.Or, another
Plant in implementation, with each predetermined interval, can judge whether the surface temperature of once newest acquisition is less than target temperature.Its
In, in embodiments of the present invention, predetermined interval is the arbitrary value between 0.1S-5S.
For example, predetermined interval is 1S, and assumes that non-contact type thermodetector detects one-time surface temperature every 0.1S.For
Facilitate explanation, it is assumed that judge that the cycle is identical with the starting point of detection cycle.So, at the T moment, then contactless temperature-measuring is judged
Whether the surface temperature that instrument is detected at the T-0.1S moment is less than target temperature.T judges start time in cycle for any one.
When giving target temperature due to surface temperature, show that surface temperature may fall into brittle zone temperature range, then just
Corner crack is likely to result in, so, when surface temperature is less than target temperature, in S104, reduce the spray for corner of casting
The flow of mouth.
Nozzle flow is reduced due to excessive so that the secondary cooling water-carrying capacity that nozzle sprays is very few, may cause because of plate
The production accident that base cooling is insufficient and brings, so, in embodiments of the present invention, nozzle flow is reduced no more than setting
The 50% of secondary coolingwater initial flow.
Due to reducing water discharge nozzle, the surface temperature of slab can be improved so that corner temperature is difficult to fall into brittle zone
Temperature range, so, it is possible to reduce the generation of corner crack.
Further, in an alternative embodiment of the invention, the method for reducing slab crackle can further include：
Judge whether the surface temperature is reliable；
When judging that the surface temperature is unreliable, at least one of nozzle nozzle is closed.
Specifically, judge whether surface temperature reliable, the surface temperature that can be specifically detected by judgement whether be
0, if not within the possible range, and/or strong etc. realization of whether fluctuating.Because surface temperature is in normal casting process
0 possibility is minimum, therefore, if the surface temperature for detecting is 0, may determine that surface temperature is unreliable.Further, plate
Base surface temperature in normal casting process has in zone of reasonableness, therefore, if surface temperature is not in the reasonable scope, it is also possible to
Judge that surface temperature is unreliable.In addition, if the surface temperature fluctuation for detecting is strong, it is also possible to judge that surface temperature can not
Lean on.Certainly, during implementing, those skilled in the art can also be according to its other party of actual selection
Method judges whether surface temperature is reliable, and the present invention is not particularly limited.
In order to avoid when the surface temperature for detecting is unreliable, the actual surface temperature of slab falls into brittle zone temperature model
Enclose, so, when judging that surface temperature is unreliable, close at least one of nozzle nozzle.
In the embodiment of the present invention, at least one nozzle for corner of casting specially is closed.For specifically how to close
At least one of nozzle nozzle, should determine according to the specific width of the slab currently cast.As an example it is assumed that application
The maximum casting width of slab caster is 2150mm, and the maximum magnitude of spray during di-cold spray nozzle standard-sized sheet is 1990mm, and nozzle
Distribution is as shown in Figure 3 and Figure 4.If the width of slab of casting is D, at least one of nozzle nozzle is closed, can specifically included：
When the width D of the slab is less than or equal to 1750mm, the inner arc corner and outer arc corner two of the slab are closed
The nozzle of the outermost row of side；
When the width D of the slab is more than or equal to 1750mm, and during less than or equal to 1900mm, alternately close the outermost of both sides
The nozzle of row.
Fig. 3 is refer to, is that the embodiment of the present invention one closes nozzle schematic diagram, and Fig. 4, be another pass of the embodiment of the present invention
Close nozzle schematic diagram.In figs. 3 and 4, nozzle is represented with circle.In secondary cooling system, towards the direction of slab outer arc on press
Matrix-style is provided with multiple nozzles.Matrix-style is also provided with multiple nozzles on towards the direction of slab inner arc, in order to keep away
Exempt to repeat to repeat, the nozzle towards slab outer arc direction is illustrate only in the present invention.Inner arc corner and outer arc corner correspond to lean on
Nozzle outside both sides, so during casting, two cooling waters are sprayed by the inside arc angle portion of nozzle and outer arc corner outside by both sides.
As D≤1750mm, as shown in figure 3, the nozzle that both sides outermost is arranged is closed.For example, by dotted line frame in Fig. 3
Nozzle is closed, and will be also switched off towards the nozzle of the similar position in interior slab inner arc direction, and then closes 14 nozzles altogether.
As 1750mm≤D≤1900mm, then the nozzle of both sides outermost row is alternately closed.For example, by dotted line frame in Fig. 4
Nozzle close, and will be also switched off towards the nozzle of the similar position in slab arc angle direction, and then close 8 nozzles altogether.
Beneficial effects of the present invention are as follows：
In embodiments of the present invention, determined higher than crisp according to the brittle zone temperature range of current slab of casting first
The target temperature of the maximum temperature in property area temperature range.Then the surface temperature in slab corner in conticaster bending section region is obtained
Degree.When judging that surface temperature is less than target temperature, the flow of the nozzle for slab corner of casting is reduced.Sprayed by reducing
Mouth flow, just reduces the secondary coolingwater in casting corner, and then improves corner temperature, makes corner temperature be difficult to fall into brittle zone
Temperature range and cause corner crackle occur.So, by the method in the embodiment of the present invention, the hair of slab crackle can be reduced
It is raw, enable in particular to reduce the transverse crack in steel slab surface and corner, it is particularly corresponding to the transverse corner crack line of casting machine bending section.
Further, when the surface temperature for detecting is unreliable, the simply nozzle closed in nozzle, it is possible to reduce pour
The secondary cold water of cast panel base, and then, reduce the possibility of slab corner crack.
Further, at least one nozzle is closed, secondary cold water can be effectively reduced, the temperature of interior arc angle and outer arc angle is improved
Degree, so as to reduce the crackle of interior arc angle and outer arc angle.
In addition, the setup of entrances and exits non-contact type thermodetector in fan-shaped section can detect slab corner in bending section region
Temperature so that control system can get relatively real steel slab surface temperature, fill up in conticaster bending section region
The blank of monitoring, improves the on-line checking level of conticaster.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (9)
1. it is a kind of reduce slab crackle method, it is characterised in that including：
According to the brittle zone temperature range of current cast slab, target temperature is determined；The target temperature is higher than the fragility
Maximum temperature in area's temperature range；
Obtain the surface temperature in the slab corner in conticaster bending section region；
Judge the surface temperature whether less than the target temperature；
When the surface temperature is less than the target temperature, the flow of the nozzle for the slab corner of casting is reduced.
2. the method for claim 1, it is characterised in that obtain the table in the slab corner in conticaster bending section region
Face temperature, including：
The surface temperature is detected by the non-contact type thermodetector for being arranged on fan-shaped section gateway.
3. method as claimed in claim 2, it is characterised in that the non-contact type thermodetector is arranged on apart from the slab
0.5 meter -2 meters of position, and deviation angle is less than or equal to 10 °.
4. method as claimed in claim 3, it is characterised in that the non-contact type thermodetector has water-cooling circulating system, and
The outside of the non-contact type thermodetector is provided with metal protection protector.
5. method as claimed in claim 4, it is characterised in that the first end of the metal protection protector is provided with scavenging conduit,
For carrying out aerosol purging in from the first end to the metal protection protector.
6. method as claimed in claim 2, it is characterised in that methods described also includes：
Judge whether the surface temperature is reliable；
When judging that the surface temperature is unreliable, at least one of nozzle nozzle is closed.
7. the method for claim 1, it is characterised in that whether judge the surface temperature less than the target temperature,
Including：
Whether each predetermined interval, judge the surface temperature of newest acquisition less than target temperature.
8. method as claimed in claim 7, it is characterised in that the predetermined interval is the arbitrary value between 0.1S-5S.
9. the method for claim 1, it is characterised in that the flow for reducing the nozzle is no more than the nozzle initial flow
The 50% of amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710021137.9A CN106735035B (en) | 2017-01-12 | 2017-01-12 | A method of reducing slab crackle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710021137.9A CN106735035B (en) | 2017-01-12 | 2017-01-12 | A method of reducing slab crackle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106735035A true CN106735035A (en) | 2017-05-31 |
| CN106735035B CN106735035B (en) | 2019-07-02 |
Family
ID=58947890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710021137.9A Active CN106735035B (en) | 2017-01-12 | 2017-01-12 | A method of reducing slab crackle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106735035B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107695313A (en) * | 2017-08-22 | 2018-02-16 | 中冶连铸技术工程有限责任公司 | A kind of method and arrangement of nozzles method for solving strand Corner Crackss |
| CN113020561A (en) * | 2021-02-07 | 2021-06-25 | 首钢集团有限公司 | Secondary cooling control method, system, equipment and storage medium for boron-containing steel continuous casting billet |
| CN114042880A (en) * | 2021-10-15 | 2022-02-15 | 柳州钢铁股份有限公司 | Method for solving corner cracks of microalloyed steel continuous casting slab |
| CN114226666A (en) * | 2021-12-20 | 2022-03-25 | 上海弘铭冶金技术工程有限公司 | Efficient temperature compensation cooling system for high-pulling-speed production of small square billets |
| CN114850420A (en) * | 2022-04-15 | 2022-08-05 | 首钢集团有限公司 | Method and device for predicting longitudinal cracks of casting blank |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279360A (en) * | 2008-05-15 | 2008-10-08 | 天津钢管集团股份有限公司 | Method for producing low alloyed steel continuous casting circular tube blank with a diameter of 350-400mm |
| CN102303107A (en) * | 2011-09-22 | 2012-01-04 | 首钢总公司 | Secondary cooling nozzle arrangement method for straight arc plate blank continuous casting machine |
| CN102380597A (en) * | 2011-10-28 | 2012-03-21 | 中冶赛迪工程技术股份有限公司 | Method for controlling secondary cooling water spraying width during continuous casting of plate blank |
| CN102430733A (en) * | 2011-12-21 | 2012-05-02 | 天津钢铁集团有限公司 | Secondary cooling water amplitude-cutting control method of slab continuous casting machine |
| CN102489680A (en) * | 2011-12-28 | 2012-06-13 | 东北大学 | System and method for intelligently controlling temperature of internal arc angle part in straightening region of wide and thick plate blank |
| CN102909333A (en) * | 2012-10-23 | 2013-02-06 | 中冶南方工程技术有限公司 | Method and device for deceasing transverse corner cracks of casting blanks |
| CN103071774A (en) * | 2013-01-24 | 2013-05-01 | 北京科技大学 | Method for controlling surface temperature of casting blank at straightening point of continuous casting machine |
| CN104525886A (en) * | 2015-01-27 | 2015-04-22 | 上海东震冶金工程技术有限公司 | Method for improving crack defects of edges and corners of casting blank |
| CN105057626A (en) * | 2015-08-27 | 2015-11-18 | 东北大学 | Control system and method for grain refinement of corners of continuous casting billets |
-
2017
- 2017-01-12 CN CN201710021137.9A patent/CN106735035B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279360A (en) * | 2008-05-15 | 2008-10-08 | 天津钢管集团股份有限公司 | Method for producing low alloyed steel continuous casting circular tube blank with a diameter of 350-400mm |
| CN102303107A (en) * | 2011-09-22 | 2012-01-04 | 首钢总公司 | Secondary cooling nozzle arrangement method for straight arc plate blank continuous casting machine |
| CN102380597A (en) * | 2011-10-28 | 2012-03-21 | 中冶赛迪工程技术股份有限公司 | Method for controlling secondary cooling water spraying width during continuous casting of plate blank |
| CN102430733A (en) * | 2011-12-21 | 2012-05-02 | 天津钢铁集团有限公司 | Secondary cooling water amplitude-cutting control method of slab continuous casting machine |
| CN102489680A (en) * | 2011-12-28 | 2012-06-13 | 东北大学 | System and method for intelligently controlling temperature of internal arc angle part in straightening region of wide and thick plate blank |
| CN102909333A (en) * | 2012-10-23 | 2013-02-06 | 中冶南方工程技术有限公司 | Method and device for deceasing transverse corner cracks of casting blanks |
| CN103071774A (en) * | 2013-01-24 | 2013-05-01 | 北京科技大学 | Method for controlling surface temperature of casting blank at straightening point of continuous casting machine |
| CN104525886A (en) * | 2015-01-27 | 2015-04-22 | 上海东震冶金工程技术有限公司 | Method for improving crack defects of edges and corners of casting blank |
| CN105057626A (en) * | 2015-08-27 | 2015-11-18 | 东北大学 | Control system and method for grain refinement of corners of continuous casting billets |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107695313A (en) * | 2017-08-22 | 2018-02-16 | 中冶连铸技术工程有限责任公司 | A kind of method and arrangement of nozzles method for solving strand Corner Crackss |
| CN113020561A (en) * | 2021-02-07 | 2021-06-25 | 首钢集团有限公司 | Secondary cooling control method, system, equipment and storage medium for boron-containing steel continuous casting billet |
| CN114042880A (en) * | 2021-10-15 | 2022-02-15 | 柳州钢铁股份有限公司 | Method for solving corner cracks of microalloyed steel continuous casting slab |
| CN114226666A (en) * | 2021-12-20 | 2022-03-25 | 上海弘铭冶金技术工程有限公司 | Efficient temperature compensation cooling system for high-pulling-speed production of small square billets |
| CN114850420A (en) * | 2022-04-15 | 2022-08-05 | 首钢集团有限公司 | Method and device for predicting longitudinal cracks of casting blank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106735035B (en) | 2019-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106735035A (en) | A kind of method for reducing slab crackle | |
| MX2014010516A (en) | Hot rolled silicon steel producing method. | |
| KR20110104046A (en) | Rolling mill temperature control | |
| CN105057626A (en) | Control system and method for grain refinement of corners of continuous casting billets | |
| CN114088503B (en) | Method for verifying accuracy of secondary cooling solidification model | |
| KR20060018254A (en) | Controllable cooling method for thick steel plate, thick steel plate manufactured by the controllable cooling method, and cooling device for the thick steel plate | |
| EP0960670A1 (en) | Method for water-cooling slabs and cooling water vessel | |
| CN107303601B (en) | Cooling monitoring system and method for casting blank | |
| JP2009195959A (en) | Method and device for surface temperature measurement of cast slab on continuous caster | |
| BR112014027788B1 (en) | WATER BLOCKING DEVICE AND WATER BLOCKING METHOD FOR COOLING WATER FOR HOT ROLLED STEEL SHEET | |
| TWI770652B (en) | Secondary cooling method of continuous casting slab | |
| CN102876881B (en) | Method for shortening soaking time of plain carbon steel in heating furnace | |
| CN101811143B (en) | Temperature control method for heat-preservation casting blank to be rolled | |
| JP2010194574A (en) | Continuous casting method of steel cast slab | |
| CN207512236U (en) | A kind of continuous annealing furnace dew point control device | |
| JP5862603B2 (en) | Method for detecting slab surface defects and equipment abnormalities in a continuous casting machine | |
| CN109865811A (en) | A kind of three times cooling device of conticaster and its continuous casting billet | |
| JP5915374B2 (en) | Method for measuring surface temperature of continuous cast slab and continuous casting method using this method | |
| CN112126753A (en) | Metal plate strip temperature measuring device and temperature control method for roller quenching machine | |
| CN109207688A (en) | A kind of metal plates and strips heat treatment blow device | |
| CN204711141U (en) | The device of crackle is there is in a kind of continuous casting billet that prevents in black brittleness district | |
| CN208019158U (en) | Hot detection device of rough rolling | |
| KR100529055B1 (en) | Device for cooling strip in continuous annealing furnace | |
| KR101060947B1 (en) | Preventing nozzle clogging and prevention method during accelerated cooling of thick plate rolling process | |
| JP3373353B2 (en) | Removal method of skid mark components by cooling |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Applicant after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Applicant before: Capital Iron & Steel General Company |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |