CN109500371A - A kind of slab dynamic secondary cooling and slighter compress control system - Google Patents
A kind of slab dynamic secondary cooling and slighter compress control system Download PDFInfo
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- CN109500371A CN109500371A CN201811567253.1A CN201811567253A CN109500371A CN 109500371 A CN109500371 A CN 109500371A CN 201811567253 A CN201811567253 A CN 201811567253A CN 109500371 A CN109500371 A CN 109500371A
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- 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
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
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- 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
Abstract
The present invention discloses a kind of slab dynamic secondary cooling and slighter compress control system, belongs to technical field of ferrous metallurgy.Present system includes: slab dynamic heat-tracking model, slab dynamic secondary cooling water allocation model, Slab Dynamic model.The present invention can efficiently reduce influence of the thermal stress to Inner Quality of Billet, it is effectively improved the internal flaws such as slab center porosity, center segregation, the online rectification technique parameter of energy, ensure that slab meets hot charging and the requirement of Direct Rolling as far as possible, slab caused by reducing because of quality problems is changed the original sentence to, and lumber recovery is improved.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, and in particular to a kind of sheet billet continuous casting technique.
Background technique
Slab quality is the most important aspect of continuous casting, and continuous casting automatic technology is one for obtaining highest product quality
Key factor.The study found that slab longitudinal surface crack is originating from crystallizer, generating stress concentration in green shell weakness will be led
Cause the generation of longitudinal crack.When slab is drawn out crystallizer, micro-crack is extended after being cooled down more by force by secondary cooling zone.For crackle
Sensibility micro alloyed steel, continuous casting billet directly affect the generation of its fragmentation line in the intensity of cooling of secondary cooling zone.In the mistake of casting blank solidification
Cheng Zhong, solidification end mushy zone interdendritic enrichment segregation element molten steel flows to slab central area and will cause center segregation, and works as
Occur volume contraction when solidification of molten steel and cannot get molten steel center porosity is just formed when being replenished in time.Center segregation and center are dredged
The factors such as the appearance of the defects of loose and steel grade, molten steel overheat, pulling rate, cooling are closely related.In continuous casting steel billet casting process, casting
Base internal temperature field data is Continuous Casting Secondary Cooling and slighter compress Process ba- sis data, continuous casting steel billet dynamic secondary cooling and slighter compress work
Skill is closely related with casting billet surface and internal soundness, and dynamic secondary cooling water distribution and dynamic soft-reduction are the centers for reducing or eliminating slab
Segregation and rarefaction defect, the effective way for promoting slab quality, improving continuous casting efficiency.,
Summary of the invention
The present invention is the production of 150mm × (1600~3300) mm wide plate base for slab size range, in Two-stage control
On the basis of system, a kind of slab dynamic secondary cooling and slighter compress control system are provided, to improve inside slab and surface quality, drop
The extremely increased production cost of low quality.
The present invention specifically adopts the following technical scheme that
A kind of slab dynamic secondary cooling and slighter compress control system, characterized by comprising:
Dynamic heat-tracking model:
According to practical pouring condition, slab is dynamically calculated from crystallizer meniscus to the temperature field of model cootrol area end
Data depict slab temperature field and casting blank solidification temperature field in real time；
Dynamic secondary cooling water allocation model:
The slice information provided according to dynamic heat-tracking model and practical pouring condition mainly eliminate heat according to effective pulling rate
The control strategy and target surface temperature control strategy of lagging influence, dynamically optimize each secondary cooling zone water, to casting
Base surface temperature carries out On-line Control, realizes the optimization to slab temperature field；
Dynamic soft-reduction model:
Pressure total amount is determined according to the casting blank solidification two-phase zone position of dynamic heat-tracking model prediction and different steel grade characteristics
And pressure range, dynamic optimization respectively depress the gap values between rollers of fan-shaped section, realize and reduce center segregation of casting blank and center porosity defect
Purpose.
Continuous casting dynamic secondary cooling and slighter compress second control system of the present invention carry out data using process control computer as core
Collection, follow-up of quality, setup algorithm are controlled using three kinds of models, instruct the optimal control process of Basic automation level, are used
To produce conticaster and carry out optimum operation guidance, has the advantages that
(1) thermal stress can be efficiently reduced to the shadow of Inner Quality of Billet (the especially generation and expansion of underbead crack)
It rings；
(2) internal flaws such as slab center porosity, center segregation be can effectively improve；
(3) online rectification technique parameter, it is ensured that slab meets hot charging and the requirement of Direct Rolling as far as possible, reduce because
Slab caused by quality problems is changed the original sentence to, and lumber recovery is improved.
(4) two cold dynamic water allocation models are according to the course and combination temperature field computation dynamic regulation secondary cooling water of slab cooling
Amount, effective pulling rate replace the water allocation model of currently practical pulling rate, it is contemplated that the hysteresis of slab heat transfer, it can be to avoid because drawing
Water acute variation caused by speed fluctuates, reduces slab cooling inhomogeneities.
Detailed description of the invention
Fig. 1 is dynamic heat-tracking model structure chart；
Fig. 2 is that model slice divides schematic diagram；
Fig. 3 is dynamic water allocation model structure；
Fig. 4 is dynamic soft-reduction model structure.
Specific embodiment
The invention will be further described With reference to embodiment, not to the limitation of its protection scope.
A kind of wide plate base dynamic secondary cooling of the invention and slighter compress control system include:
1, slab dynamic heat-tracking model
Dynamically track casting blank solidification final position is the premise for implementing dynamic secondary cooling water distribution and dynamic soft-reduction, based on solidification
Thermal conduction study basic theories and the analysis to sheet billet continuous casting operating condition, establish casting blank solidification temperature field dynamic heat-tracking model, model can
According to the variation of the practical pouring condition such as continuous casting Actual Casting Speed, tundish temperature and secondary coolingwater, dynamically to calculate slab from knot
Brilliant device meniscus is to data such as the central temperatures, surface medium temperature, solid liquid phase solidification front of model cootrol area end, in real time
Depict slab temperature field.Dynamic heat-tracking model structure is as shown in Figure 1, mainly include casting machine and steel grade parameter database mould
3 block, the online computing module in dynamic slab temperature field, data filtering module modules, casting machine and steel grade supplemental characteristic library module master
The reference datas such as casting machine device parameter, steel grade physical parameter, slab temperature are provided for the online computing module in dynamic slab temperature field
It spends the online computing module in field and slab temperature field, casting blank solidification temperature field information is mainly calculated according to input parameter.Slab temperature field
Main includes the Temperature Distribution of each position of slab, and casting blank solidification temperature field includes slab temperature, shell thickness, two-phase zone position
With the information such as Coagulated hemothorax.Data filtering module major function is to identify to mode input data, for example acquire pulling rate number
Model automatically considers incorrect data input when value is less than 0, and when acquisition tundish temperature numerical value is greater than 1600 degree, data filtering module is certainly
It is dynamic to think that tundish temperature numerical value is wrong.Dynamic heat-tracking model input parameter mainly includes pulling rate, steel grade characteristic, casting machine equipment ginseng
Number, secondary cooling zone water and middle packet molten steel temperature etc., model output parameters mainly include slab temperature field data and casting blank solidification temperature
Spend field information.
As shown in Fig. 2, slab is divided into several from crystallizer meniscus to control zone end by dynamic heat-tracking model
Slice, each slice are independent information units, these information include " service life " being sliced, temperature field, position etc..
Model has carried out whole process to slab from crystallizer molten steel meniscus to the last one withdrawal straightening machine of casting machine out or fan-shaped section
Temperature calculating tracking.In a model, slab along the direction of motion from crystallizer meniscus to casting machine the last one withdrawal straightening machine or
Fan-shaped section is discretized into n slice, and for each slicing treatment unit, slice edge is calculated by establishing heat transfer differential equation
The solidification heat transfer process in throwing direction.As shown in Figure 2.Considering Actual Casting Speed, the practical water of middle Baogang's coolant-temperature gage and each cooling zone
Equation is periodically solved in the case where the factors such as amount, calculates the setting temperature field and shell thickness that slab is respectively sliced
Deng.Since the variation of each cutting temperature field can represent the variation in slab temperature field on the slice present position, thus by institute
There is slice to string together, so that it may the thermo parameters method of entire casting stream dynamically be depicted.
The heat transfer very little in throwing direction, can ignore, if slab is divided into dry chip, each slice on throwing direction
100mm, these slices are moved down with drawing speed.In addition for slab, since the heat transmitting of slice surface to center is main
Depending on the heat transmitting in slab width direction, corresponding control differential equation is established for each slice in this way.
Model receives after casting machine opens the signal poured, and first calculating the molten steel being poured in first calculating cycle will crystallize
The thermo parameters method and shell thickness of several new slices are generated in device from meniscus.With the progress of casting, calculate from crystallizer
While meniscus generates new slice thermo parameters method, calculates each old slice and reach a new position after a calculating cycle
Thermo parameters method and shell thickness.
Repeat above-mentioned calculating process: slab is travelled forward with different drawing speeds, and the new slice of different number generates, old
It is sliced serial number all to update, when being sliced serial number greater than n in old slice, these slices will not be considered by casting out.
After model receives out the signal of tail base, new slice, old slice will be no longer generated in next calculating cycle
The thermo parameters method and shell thickness of new position are reached after still calculating a calculating cycle, and updates slice serial number.It repeats in this way
Process, the slice serial number of the slice to the last generated is greater than n, and slab temperature field dynamic entire in this way calculates tracking process knot
Beam.
2, slab dynamic water allocation model
On the basis of in slab temperature field, dynamic heat-tracking model can provide in real time slab temperature field information, dynamic two
Cold Controlling model realizes that the water under different working conditions optimizes using the Advanced Control Strategies of " Multiple model control ".Wherein wrap
It includes and eliminates the control that thermo-lag influences based on the middle packet degree of superheat and seasonal secondary cooling water temperature feedforward water distribution strategy, based on effective pulling rate
Strategy and control strategy progress combined optimization control secondary coolingwater based on target surface temperature and feedback of rising again etc..Such as Fig. 3 institute
Show, dynamic secondary cooling water allocation model includes dynamic secondary cooling water distribution supplemental characteristic library module, the online computing module of dynamic secondary cooling water distribution, water
Measure 3 modules such as set point correct module.Mode input data include slab temperature field, production process data, steel grade target temperature
Degree and minimax water etc., output data mainly include slab thermo parameters method and two areas Leng Ge setting water.
Wherein dynamic secondary cooling water distribution supplemental characteristic library module is responsible for online computing module and provides the initial water of secondary cooling zone, most
Greatly/small water, each pulling rate correspond to the dynamic water allocations technological parameter such as water.Online computing module is the core of Controlling model, it is real
When receive dynamic heat-tracking model offer slice information (" service life ", position etc.), calculate effective drawing of each cooling zone slab
Speed and the water that each area is determined in conjunction with protective slag database, wherein effective pulling rate is indicated using average pull rate.Water
Amount setting value be corrected module according to width of plate slab, the degree of superheat, cold in-water temperature and casting machine different casting maximum/it is small
First class control system is handed down to after water amendment.Dynamic secondary cooling water distribution system supports user to increase new steel grade and revision corresponding two
Cold technique, and take the safeguard measures such as L1 grades and L2 grades of chain and minimum and maximum waters.
Dynamic secondary cooling water distribution is carried out with " base age " (time undergone in casting machine after local green shell generation) for control parameter
The cooling control of basic water amount, it is established that the corresponding relationship in " base age " and basic water amount.I.e. slab generates certain time with regard to corresponding
Certain water is supplied, in the casting of unstable state, pulling rate no longer directly determines the size of water, but passes through " base age "
Reflect the slab of each position cooling trend and effective pulling rate degree, to supply corresponding water.
Two cold dynamic water allocation models according to the course and combination temperature field computation dynamic regulation secondary coolingwater of slab cooling,
Cool down casting blank surface temperature uniformly according to the cooling curve for meeting metallurgical rule, so as to reach control continuous casting billet structure and
The purpose of internal soundness.Two cold dynamic water allocation models consider the residence time model of slab cooling course, i.e., are replaced with effective pulling rate
The water allocation model of currently practical pulling rate, its advantage is that the hysteresis of slab heat transfer is considered, it can be to avoid because pulling rate fluctuates
Caused water acute variation reduces slab cooling inhomogeneities.And using based on the middle packet degree of superheat and seasonal secondary cooling water temperature
Degree correction strategy is modified secondary coolingwater, and baotou steel water superheat and seasonal secondary cooling water temperature variation because in is avoided to lead to slab
Change of temperature field.Based on " residence time model " effectively pulling rate, the middle packet degree of superheat and seasonal secondary cooling water temperature adjustmemt policy grounds
On, according to calculated slab actual surface temperature and rise again that carry out two again with slab target surface temperature and the difference risen again cold
Water optimization, further eliminates the inhomogeneities of slab cooling.
3, Slab Dynamic model
Dynamic soft-reduction is exactly to generate certain drafts by being applied around pressure in liquid core of continuous casting billet end to compensate
The solidification shrinkage amount of slab, this aspect can eliminate or reduce slab and shrink the internal voids to be formed, and prevent intergranular solute
Molten steel flowed to slab central cross, squeezing action caused by another aspect slighter compress can also promote wick-containing center to be enriched with
The molten steel of solute redistributes solute element in molten steel along throwing direction reverse flow, to make the solidified structure of slab
More uniform densification achievees the purpose that improve center segregation and reduces center porosity.
The key of dynamic soft reduction technology is exactly the position for utilizing Controlling model Accurate Prediction casting blank solidification two-phase section, basis
Different steel grade characteristics determine that reasonable pressure total amount and pressure range, dynamic optimization respectively depress the gap values between rollers of fan-shaped section, and realization subtracts
The purpose of the defects of few center segregation of casting blank and center porosity.As shown in figure 4, dynamic soft-reduction Controlling model is mainly by Dynamic Light
Reduction parameters database, the online computing module of dynamic soft-reduction roll gap, drafts correction module composition.
Dynamic soft-reduction parameter database is mainly that the online computing module of roll gap provides the overall reduction of different steel grades, pressure
The technological parameters such as gap values between rollers are shunk on section, Soft reduction rate, basis.Online computing module receives dynamic heat-tracking model in real time and mentions
The casting blank solidification temperature field information of confession, according to the pressure for each steel grade that casting blank solidification two-phase zone position, incorporating parametric database provide
Lower interval computation depressing position determines that pressure starting fan-shaped section and pressure terminate fan-shaped section, is then participating in overall reduction
Reasonable distribution is carried out in each fan-shaped section of slighter compress, provides the initial depression amount of each fan-shaped section.Initial depression amount is repaired by drafts
Positive module carries out front and back according to Soft reduction rate and optimizes and revises, and is finally completed then in conjunction with natural shrinking gap values between rollers to each fan-shaped section
Gap values between rollers set and are handed down to first class control system.Dynamic soft-reduction system supports user increases new steel grade and the corresponding pressure of revision
Lower technological parameter, and take the optimization protection slighter compress equipment measure such as gap preset and maximum reduction.
During slighter compress, pressure total amount is rationally divided in pressure range according to slab inside center solid rate size
Match, depresses allocation rule of the total amount in pressure range and distributed according to solid rate linear function straight line.
Embodiment one
Casting blank of continuous casting machine dimensional parameters are 150mm × 3250mm, for most one of Wide Band Oxygen Sensors casting machine in the world, for wide plate base
Productive prospecting establishes conticaster dynamic secondary cooling and slighter compress control system for wide plate base productive prospecting, by system to dynamic
Two is cold and slighter compress technological parameter optimizes adjustment, and cc billet surface quality and internal soundness improve obviously.
It is 1.08% and 0.80% that rear steel plate cracking frequency and oven improvement are rolled before the process implementing, and low power qualification rate is about
85%；
Rear steel plate cracking frequency is rolled after the process implementing and oven improvement is 0.40% and 0.31%, slab low power qualification rate
It is increased to 90% or more, it is more unobvious using improving before Controlling model of the present invention.
Dynamic secondary cooling water distribution fundamental technology parameter after optimization is as shown in the table, wherein for crack sensitivity steel grade peritectoid
Steel alloy is about 0.74L/kg using weak cold strategy specific water.
Specific water's unit: L/kg, jet density unit: l/m2.min。
Dynamic soft-reduction fundamental technology parameter after optimization is as follows:
Claims (9)
1. a kind of slab dynamic secondary cooling and slighter compress control system, characterized by comprising:
Dynamic heat-tracking model:
According to practical pouring condition, slab is dynamically calculated from crystallizer meniscus to the temperature number of fields of model cootrol area end
According to depicting slab temperature field and casting blank solidification temperature field in real time；
Dynamic secondary cooling water allocation model:
The slice information provided according to dynamic heat-tracking model and practical pouring condition mainly eliminate thermo-lag according to effective pulling rate
The control strategy and target surface temperature control strategy of influence, dynamically optimize each secondary cooling zone water, to slab table
Face temperature carries out On-line Control, realizes the optimization to slab temperature field；
Dynamic soft-reduction model:
Pressure total amount and pressure are determined according to the casting blank solidification two-phase zone position of dynamic heat-tracking model prediction and different steel grade characteristics
Lower section, dynamic optimization respectively depress the gap values between rollers of fan-shaped section, realize the purpose for reducing center segregation of casting blank and center porosity defect.
2. slab dynamic secondary cooling as described in claim 1 and slighter compress control system, it is characterised in that dynamic heat-tracking model
Slab is divided into multiple slices from crystallizer meniscus to control zone end, each slice is independent information unit.
3. slab dynamic secondary cooling as described in claim 1 and slighter compress control system, it is characterised in that dynamic secondary cooling water distribution mould
Type includes dynamic secondary cooling water distribution supplemental characteristic library module, the online computing module of dynamic secondary cooling water distribution and water set point correct mould
Block；The dynamic secondary cooling water distribution supplemental characteristic library module is responsible for the online computing module of dynamic secondary cooling water distribution and provides dynamic water allocation work
Skill parameter；The online computing module of dynamic secondary cooling water distribution receives the slice information of dynamic heat-tracking model offer, meter in real time
Effective pulling rate of each cooling zone slab is calculated, and determines the water in each area in conjunction with dynamic secondary cooling water distribution parameter database, wherein having
Effect pulling rate is indicated using average pull rate；Water set point correct module is according to width of plate slab, the degree of superheat, cold in-water temperature
With casting machine in maximum/small water of different casting, first class control system is handed down to after being modified to each area's water yield.
4. slab dynamic secondary cooling as claimed in claim 1 or 3 and slighter compress control system, it is characterised in that dynamic secondary cooling water distribution
With the cooling control that " base age " is that control parameter carries out basic water amount, " the base age " refers to pass through in casting machine model after green shell generates
The time gone through establishes the corresponding relationship in " base age " and basic water amount, the cooling trend of each position slab is reflected by " base age "
With effective pulling rate degree, the water of supply is determined.
5. slab dynamic secondary cooling as claimed in claim 1 or 3 and slighter compress control system, it is characterised in that dynamic secondary cooling water distribution
Model according to calculated slab actual surface temperature and rise again it is further right with slab target surface temperature and the difference risen again
Secondary coolingwater optimizes.
6. slab dynamic secondary cooling as described in claim 1 and slighter compress control system, it is characterised in that dynamic soft-reduction control
Model includes dynamic soft-reduction parameter database, the online computing module of dynamic soft-reduction roll gap, drafts correction module；It is described dynamic
State slighter compress parameter database is responsible for the online computing module of dynamic soft-reduction roll gap and provides the soft reduction process parameter of different steel grades；
The online computing module of dynamic soft-reduction roll gap receives the casting blank solidification temperature field information of dynamic heat-tracking model offer in real time, really
Casting blank solidification two-phase zone position is determined, in conjunction with the pressure range calculating pressure position for each steel grade that dynamic soft-reduction parameter database provides
It sets, determine that pressure starting fan-shaped section and pressure terminate fan-shaped section, then by overall reduction in each fan-shaped section for participating in slighter compress
It is inside allocated, provides the initial depression amount of each fan-shaped section；Initial depression amount by drafts correction module according to Soft reduction rate into
Row is optimized and revised, and is finally completed then in conjunction with natural shrinking gap values between rollers and the gap values between rollers of each fan-shaped section are set and issued with level-one control
System.
7. slab dynamic secondary cooling as claimed in claim 6 and slighter compress control system, it is characterised in that during slighter compress, pressure
Lower total amount carries out reasonable distribution according to slab inside center solid rate size in pressure range, depresses total amount in pressure range
Allocation rule according to solid rate linear function straight line distribute.
8. slab dynamic secondary cooling as described in claim 1 and slighter compress control system, it is characterised in that two is cold with hydraulic art ginseng
Number is as follows:
Specific water's unit: L/kg, jet density unit: l/m2.min。
9. slab dynamic secondary cooling as described in claim 1 and slighter compress control system, it is characterised in that slighter compress technological parameter
It is as follows:
。
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19931331A1 (en) * | 1999-07-07 | 2001-01-18 | Siemens Ag | Method and device for producing a strand of metal |
| CN101169624A (en) * | 2006-10-25 | 2008-04-30 | 上海梅山钢铁股份有限公司 | Plate blank continuous casting off-line emulation system under secondary cooling and dynamic soft reduction |
| CN101406940A (en) * | 2008-11-14 | 2009-04-15 | 重庆大学 | On-line control method of continuous casting blank temperature based on memory recognition mode |
| CN102189237A (en) * | 2008-12-30 | 2011-09-21 | 内蒙古包钢钢联股份有限公司 | System integration technology for dynamic soft reduction of continuously-cast billet |
| CN104540617A (en) * | 2012-08-14 | 2015-04-22 | 杰富意钢铁株式会社 | Method for controlling solidification completion position and device for controlling solidification completion position |
| CN107457378A (en) * | 2017-07-25 | 2017-12-12 | 北京科技大学 | The method that continuous casting steel billet three-dimensional dynamic water distribution water is set and controllable slighter compress is realized |
-
2018
- 2018-12-20 CN CN201811567253.1A patent/CN109500371A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19931331A1 (en) * | 1999-07-07 | 2001-01-18 | Siemens Ag | Method and device for producing a strand of metal |
| CN101169624A (en) * | 2006-10-25 | 2008-04-30 | 上海梅山钢铁股份有限公司 | Plate blank continuous casting off-line emulation system under secondary cooling and dynamic soft reduction |
| CN101406940A (en) * | 2008-11-14 | 2009-04-15 | 重庆大学 | On-line control method of continuous casting blank temperature based on memory recognition mode |
| CN102189237A (en) * | 2008-12-30 | 2011-09-21 | 内蒙古包钢钢联股份有限公司 | System integration technology for dynamic soft reduction of continuously-cast billet |
| CN104540617A (en) * | 2012-08-14 | 2015-04-22 | 杰富意钢铁株式会社 | Method for controlling solidification completion position and device for controlling solidification completion position |
| CN107457378A (en) * | 2017-07-25 | 2017-12-12 | 北京科技大学 | The method that continuous casting steel billet three-dimensional dynamic water distribution water is set and controllable slighter compress is realized |
Non-Patent Citations (1)
| Title |
|---|
| 王国新: "大方坯连铸动态二冷与动态轻压下控制模型的开发与应用", 《系统仿真学报》 * |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315048A (en) * | 2019-07-24 | 2019-10-11 | 中冶赛迪工程技术股份有限公司 | A method of improving continuous casting billet transverse direction cooling temperature uniformity |
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