CN108067501A - Suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature - Google Patents
Suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature Download PDFInfo
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- CN108067501A CN108067501A CN201711086605.7A CN201711086605A CN108067501A CN 108067501 A CN108067501 A CN 108067501A CN 201711086605 A CN201711086605 A CN 201711086605A CN 108067501 A CN108067501 A CN 108067501A
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- bloom
- high temperature
- big pressure
- flange
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
Abstract
The present invention relates to the big pressure milling train fields of continuous casting billet high temperature, the roller curve design of operation roll of mill under specially a kind of big pressure technique suitable for bloom and rectangular bloom high temperature, is specifically for use in bloom and the hot core of rectangular bloom single pass or the big pressure operation of rolling of wick-containing high temperature.Flange roll shape and box pass are optimized combination by the working roll, and the optimization design of working roll geometric properties is carried out by calculating.The flange width coefficient of composite roll is 0.4~0.8,5~45mm of flange height；Box fillet radius 10~40mm of value of composite roll, 90~120 degree of side wall inclination angle, work roll diameter are 500~1000mm.Using flange roller after this composite roll shape working roll, can be highlighted simultaneously on thickness and extending direction and box pass shrinkage cavity pressing effect in the direction of the width in the big pressure rolling mill practice of high temperature.So as to improve the strand core deformation permeability and central pipe three-dimensional pressing effect in the big pressure rolling deformation of single pass high temperature to a greater degree.
Description
Technical field
The present invention relates to the big pressure milling train fields of continuous casting billet high temperature, are specially that one kind is suitable for bloom and rectangular bloom high temperature
Operation roll of mill curve design method under big pressure technique, is specifically for use in bloom and the hot core of rectangular bloom single pass or wick-containing is high
The warm big pressure operation of rolling.
Background technology
With the fast development of Chinese national economy, every profession and trade is increasing to the demand of high-quality steel, while to steel
The inherent quality requirement of iron material is also higher and higher.Meanwhile steel production technology is constantly updated and regenerated, production efficiency constantly carries
Height constantly develops towards the direction of high quality low energy consumption.
Raw material of the continuous casting billet as steel material hot rolling, quality control play the quality of final steel products decisive
Effect, particularly comprehensive mechanical property require the production of stringent high-quality steel products, more severe to the quality requirement of strand
It carves.The central pipe of continuous casting billet, loose and segregation drastically influence carrying for blank quality as prevailing quality defect inside slab
It is high.Particularly with think gauge continuous casting billet, such as：Big cross section square billet or rectangular bloom and slab etc., more than loose shrinkage cavity defect more
It is difficult to eliminate.In pair rolling production process, the strand size that is limited in rolling direction, deformation effect is more difficult to penetrate into strand
Core, so it is generally necessary to larger compression ratio could realize the thorough pressing and soldering of core shrinkage cavity.
Occurred continuous casting billet high temperature weight soft reduction process in recent years, the after-heat of the process makes full use continuous casting billet carries out heat
Core or the big pressure deformation of continuous casting billet high temperature with wick-containing, can so utilize smaller compression ratio to solve continuous casting billet center porosity
The problems such as the defects of shrinkage cavity.This is because continuous casting billet can generate strand after undergoing a time longer secondary cooling process of CC route
Larger temperature gradient from surface to core, at this time it is big pressure rolling deformation make full use of the continuous casting billet core table temperature difference formed differential temperature rolling
Effect, so as to live in the deformation permeability of continuous casting billet core.There are mainly two types of the main technique thinkings of the technique, and one kind is even
Casting machine end continuously depresses to form big pressure effect using a series of diameter rolls, and another technology arrangement is in continuous casting end cloth
The big pressure milling train of big roller diameter high temperature is put, so as to fulfill the big pressure deformation of one-pass roller.
The present invention is exactly to propose a kind of improved though of the big pressure rolling equipment of single chassis high temperature on this basis, i.e., logical
It crosses the strand core that roll profile optimization is further improved in the big pressure deformation of high temperature and deforms permeability, be distributed with continuous casting blank temperature
Feature matches, and realizes better strand central pipe pressing effect, realizes the long material casting of think gauge big cross section under small reduction ratio
The production of base.
The content of the invention
It is an object of the invention to provide the milling train work under a kind of big pressure technique suitable for bloom and rectangular bloom high temperature
Roller curve design method, the working roll are specially adapted for large size side's section or the big pressure work of rectangular cross section continuous casting billet single pass high temperature
During skill.The present invention combines flange roll shape and Combination Design is optimized in box roll shape, under the high-temperature high-pressure of continuous casting billet end
The middle application new roll shape can improve the effect of the pressing of continuous casting billet core shrinkage cavity.
The technical scheme is that：
A kind of operation roll of mill Curve Design for being suitable for bloom and the big pressure of rectangular bloom high temperature, the working roll are flange
Roll shape and box pass roll shape are combined into composite roll shape, and box hole type roll is formed between the upper roller and lower roll of working roll
Flange roll shape is set among the body of roll of type, upper roller or lower roll is axial.
Described is suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, in the working roll
In roll design, flange roll shape and box pass are composed composite roll shape form；In optimum roll shape design, counted by emulating
Calculation optimizes the roll shape geometry evaluation coefficient of definition.
Described is suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, to the ginseng of definition
Number：Flange width coefficient θ, flange height h, flange radius of corner r, box Sidewall Height H, box sidewall draft angles α, in box
Radius of corner R is optimized；Wherein, θ=m/L, m and L are respectively flange width and strand width.
Described is suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, and flange can promote
Shrinkage cavity compressive deformation on thickness direction and extending direction, box side wall can promote the compression of shrinkage cavity in the direction of the width to become
Shape；For the rectangular bloom or bloom of same specification, as flange width increases the increase of θ values, when the ascending variation of θ values
When, the presentation of strand core equivalent strain value first increases the variation tendency reduced afterwards；With the increase of flange height, strand core becomes
Shape permeability increases；Under conditions of strand area of section is constant after deformation, as box sidewall draft angles reduce, strand core etc.
Effect variate increases；Increase the fillet radius of box, strand transverse corner crack line is promoted to heal in rolling deformation.
Described is suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, and work roller flange is wide
Between degree coefficient θ is 0.4~0.8, flange height h is 5~45mm, and flange radius of corner r is 5~15mm.
Described is suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, according to strand size
Difference, work roller box type Sidewall Height H are 50~200mm, and box fillet radius R is 10~40mm, side wall inclination alpha for 90~
120 degree.
Described is suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, and working roll is effectively straight
Footpath D is 500~1000mm.
Described is suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, which will be housed
The big pressure milling train of the high temperature of roller is directly arranged at the continuous casting line outlet ends of conticaster, the continuous casting billet of continuous casting directly into
The big pressure operation of rolling of row high temperature.
Described is suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, with the working roll core
The milling equipment of heart deformation mechanism is suitable for bloom or the big pressure operation of rolling of rectangular bloom single pass high temperature, at this time casting speed
For 0.4~1m/min, drafts of the roll reduction based on 10~50mm, reduction ratio is up to 30~40%, realizes strand
Wick-containing and the hot core high temperature big pressure operation of rolling of the core solid rate 0.75~1.
Advantages of the present invention and advantageous effect are：
1. the present invention is compared with plain-barreled roll and the convex roller of parabolic type, as shown in Figure 4, it was demonstrated that flange roller may advantageously facilitate continuous casting billet
Core shrinkage cavity is compressed in thickness direction and extending direction；And the composite roll shape can equally play the advantage of flange roller, realize good
Good shrinkage cavity pressing effect.
2. the present invention is compared with plain-barreled roll and the convex roller of parabolic type, as shown in Figure 4, it was demonstrated that box hole type roll may advantageously facilitate contracting
Kong Kuanxiang compresses, and the composite roll shape can highlight the advantages of box hole type roll is in the big pressure deformation of high temperature, therefore the roll shape is set
Meter can realize preferable three-dimensional pressing effect.
During 3. the roll shape is applied to the big pressure rolling deformation of single pass high temperature by the present invention, roll shape can be played simultaneously
Design and casting temperature field advantage, utmostly promote deformation to strand core permeate, realize strand central pipe pressing and
Soldering process, so as to which under conditions of thickness of strand is certain, the rolling of bigger thickness specification is produced by reducing compression ratio
Product.
4. for the present invention compared with the big soft reduction process of roller column high temperature, which can give the pressure of bigger in deformation process
Lower amount, can reach 10~50mm, and adjustable extent is big；Even if it and is had shown that through research under the conditions of identical drafts, single track
Strand shrinkage cavity volume reduces more after secondary deformation.
5. the design form of roll of the present invention is suitable for, more steel grades, more specifications be square and the big pressure of rectangular cross section continuous casting billet high temperature
Lower rolling process can reach the improvement of the loose shrinkage cavity defect of continuous casting billet core.
Description of the drawings
Fig. 1 arranges schematic diagram for the big soft reduction process of single pass high temperature.In figure, 1 continuous casting line；The big pressure milling train of 2 high temperature.
Fig. 2 deforms infiltrative comparison diagram for the lower continuous casting billet core of different roll shape working rolls effect.Wherein, (a) plain-barreled roll；
(b) the convex roller of parabola；(c) flange roller；(d) box hole type roll.
Fig. 3 is the composite roll shape work roll profile schematic diagram.In figure, 3 roller heads；4 roll necks；5 composite rolls.
Fig. 4 is the composite construction details diagram of the roll shape of the present invention.In figure, 6 upper rollers；7 strands；8 lower rolls.
Fig. 5 is flange width coefficient and continuous casting billet core equivalent strain correspondence curve.
Fig. 6 is strand core spherical shape shrinkage cavity form comparison diagram after the effect of different roll shape working rolls.Wherein, (a) cross section；
(b) longitudinal section.
Specific embodiment
In specific implementation process, working roller designing scheme of the present invention is for liquid core of continuous casting billet/hot core
The rolling equipment that the big soft reduction process of high temperature proposes improves.The characteristics of flange roll shape and box pass are highlighted in the roll design,
Found composite roll shape form；In optimum roll shape, several roller curve evaluation coefficients are defined, its is obtained by calculation and optimal takes
It is worth scope.Continuous casting line end is directly arranged at using the big pressure milling train of the roller, realizes wick-containing or the hot big pressure of core high temperature
The operation of rolling.
Using the working roll as the application conditions of the rolling equipment of core：Throwing of the bloom (rectangular bloom) in casting process
Speed is 0.4~1m/min, and the outlet port of conticaster, the big pressure rolling of high temperature are arranged in using the milling equipment of the working roll
Speed matches with continuous casting casting speed；It can realize that hot core (strand core solid rate is 1) or even wick-containing depress (strand core
Solid rate is 0.75~0.99) deformation process, drafts of the roll reduction based on 10~50mm, reduction ratio maximum can reach
30%~40%.In addition, in practical applications, due to strand and the long-time contact heat-exchanging of roll, it be easy to cause roller surface
Intensity and toughness decline, so roll material, processing technology should be controlled strictly, and establish mating roll coolant system.
After continuous casting billet departs from two cold-zones, the application of the working roll causes continuous casting billet core shrinkage cavity deformation to show following spy
Point：With reference to the advantage of flange roller and box hole type roll, the composite roll shape can promote shrinkage cavity from thickness direction, extending direction and
Width compresses simultaneously, and compared with plain-barreled roll, box hole type roll and simple flange roller, pressing ability is more powerful.
As shown in Figure 1, the big pressure milling train 2 of the high temperature equipped with the composite roll shape working roll is directly arranged at continuous casting by the present invention
1 outlet ends of continuous casting line of machine, the continuous casting billet of continuous casting directly carry out the big pressure operation of rolling of high temperature.The rolling of milling train
Speed is directly matched with continuous casting casting speed and rolled at a slow speed, by the big pressure rolling deformation process of single pass, to maximum
Degree improves strand core defect.
As shown in Fig. 2 (a)-(d), in order to probe into rational roller combination mode, comparison is calculated with identical by simulation
Maximum functional diameter but the different working roll of roll shape (identical continuous casting billet initial temperature field is rolled under identical deformation condition
Speed processed, roll centre drafts), generated strand core deforms infiltrative difference.Obviously, it is wide to center pressure in roll
Under conditions of lower amount is consistent, flange roller acts on the most apparent in terms of strand core deformation permeability is improved.And box pass
In the presence of the deformation uniformity that can improve strand width, also it is expected to promote shrinkage cavity pressing upwards wide.
It is proposed as shown in figure 3, being based on more than roll shape on deforming infiltrative influence, the present invention by flange roll shape and case
Type hole type roll shape is combined the thinking being related to, definite roll form.Working roll includes roller first 3, roll neck 4, composite roll 5, multiple
It is respectively roll neck 4 to close 5 both sides of roller, and one end of one of roll neck 4 sets roller first 3；Wherein, composite roll 5 is axial intermediate for the body of roll
Flange is set.In order to realize preferably deformation osmosis, the present invention sets several roll shape geometry evaluation coefficients, passes through calculating
Method probes into obtain optimized parameter value range.
Emphasis of the present invention optimizes the flange width for combining roll shape, defines roll flange width coefficient θ, establishes heating power
Visco-plasticity Explicit Analysis model is coupled, carries out correlation computations.Compared by strand core equivalent strain, determine optimal working roll
Flange width designs.As shown in figure 4, the upper roller 6 and lower roll 8 of the big pressure milling train of high temperature are oppositely arranged, between upper roller 6 and lower roll 8
Box pass roll shape is formed, for rolling strand 7；Roll flange width coefficient is the ratio of flange width and strand width, can
To be expressed as θ=m/L (θ≤1)；In formula, m is flange width, and L is strand width.Also, it is wide that flange is not only carried out in the present invention
Degree optimization, also increases sloped sidewall structure in box pass, can realize further improving for shrinkage cavity pressing ability.
For the rectangular bloom or bloom of same specification, as flange width increases the increase of θ values.By calculating, such as Fig. 5
Shown, when the ascending variation of θ values, the presentation of strand core equivalent strain value first increases the variation tendency that reduces afterwards, 0.4~
Relatively good strand core deformation permeability can be generated in the range of 0.8.In addition, with the increase of flange height, strand core
Deform permeability increase.Under conditions of strand area of section is constant after deformation, as box sidewall draft angles reduce, strand core
Equivalent strain value increases.
In order to study pressing effect of the shrinkage cavity in the big pressure rolling of high temperature, focusing on comparative's high temperature is big to be depressed in deformation process
Shrinkage cavity deformation effect under the convex roller of plain-barreled roll, flange roller, parabola, box hole type roll and the composite roll.As a result such as Fig. 6 (a)-(b)
Shown, the presence of flange can promote shrinkage cavity compressive deformation on thickness direction and extending direction, and the presence of box side wall then can
Enough promote the compressive deformation of shrinkage cavity in the direction of the width, so as to reduce beneficial to shrinkage cavity volume.In addition, suitably increase the inner circle of box
Angular radius can suitably promote strand transverse corner crack line to heal in rolling deformation.
Casting blank deformation feature under being acted on based on more than composite roll shape, so working roll feature according to the present invention describes
It is as follows：(1) composite roll flange width coefficient θ is defined by optimizing to calculate, value range is between 0.4~0.8,0.6 or so
It is most strong that infiltrative facilitation is deformed to strand core；(2) composite roll flange height is h, and value setting range is flange height 5
~45mm (being preferably 10~40mm), flange radius of corner r, value range is 5~15mm；(3) compound roller box type Sidewall Height
H, different according to strand size, value range is 50~120mm, and box fillet radius R, value range is 10~40mm,
The sidewall draft angles α of composite roll, value range are 90~120 degree (being preferably 91~105 degree)；(4) working roll effective diameter D,
Value range is 500~1000mm.
In the following, by embodiment, the present invention is described in more detail.
Embodiment 1
300mm × 360mm continuous cast rectangle billets of the 16Mn steel of actual continuous casting, casting speed 0.6m/min.It is right first
The continuous casting billet of steady production carries out central pipe rank evaluation；Distinguish according to the thinking of the big pressure of single pass high temperature in continuous casting end
It sets up the convex roller of plain-barreled roll, flange roller, parabola, box hole type roll and the composite roll and completes rolling deformation process, to deformed
Strand shrinkage cavity is counted and is graded.More above-mentioned evaluation result, verification roll shape is to the improvement result of shrinkage cavity.
Continuous casting billet completes the big pressure rolling deformation process of high temperature under the premise of identical temperature field, at this time casting blank surface temperature
952 DEG C, 1370 DEG C of core temperature.Working roll parameter：The flange width coefficient of flange roller and composite roll is 0.6, flange height
13mm, flange bull nose 5mm；92 degree of the angle of sides of box roller and composite roll, box filleted corner are 15mm；The convex roller of parabola
Height of projection 13mm.Working roll mid diameter is 950mm, and drafts is 40mm in the middle part of working roll in deformation process.
It is counted by deforming rear center's shrinkage cavity, the strand central pipe by the big pressure rolling of composite roll high temperature is respectively than warp
Cross the shrinkage cavity after the convex roller of plain-barreled roll, parabola, box hole type roll and flange rolling it is small by 35.4%, 36.9%, 29.8% and 28.3%.
Therefore can illustrate that the composite roll roll design is more advantageous to effective pressing of continuous casting billet core shrinkage cavity, it is expected to generate good reality
Application value.
Embodiment the result shows that, which optimizes combination by flange roll shape and box pass, and application simulation calculates
Means carry out working roll geometric properties optimization design.It works in the big pressure rolling mill practice of high temperature using this composite roll shape
After roller, can highlight simultaneously flange roller on thickness and extending direction and box pass in the direction of the width shrinkage cavity pressing effect
Fruit.So as to improve the strand core deformation permeability in the big pressure rolling deformation of single pass high temperature and center to a greater degree
Shrinkage cavity three-dimensional presses effect.
Claims (9)
- It is 1. a kind of suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, which is characterized in that the work Make roller to be combined into composite roll shape for flange roll shape and box pass roll shape, case is formed between the upper roller and lower roll of working roll Flange roll shape is set among the body of roll of type hole type roll shape, upper roller or lower roll is axial.
- 2. the operation roll of mill Curve Design according to claim 1 for being suitable for bloom and the big pressure of rectangular bloom high temperature, It is characterized in that, in the roll design of the working roll, flange roll shape and box pass are composed composite roll shape form；In roller In type optimization design, the roll shape geometry evaluation coefficient of definition is optimized by simulation calculation.
- 3. it is according to claim 2 suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature, it is special Sign is, to the parameter of definition：Flange width coefficient θ, flange height h, flange radius of corner r, box Sidewall Height H, box Sidewall draft angles α, box fillet radius R are optimized；Wherein, θ=m/L, m and L are respectively flange width and strand Width.
- 4. the operation roll of mill Curve Design according to claim 3 for being suitable for bloom and the big pressure of rectangular bloom high temperature, It is characterized in that, flange can promote shrinkage cavity compressive deformation on thickness direction and extending direction, box side wall can promote to contract The compressive deformation of hole in the direction of the width；For the rectangular bloom or bloom of same specification, increase as flange width increases θ values Greatly, when the ascending variation of θ values, the presentation of strand core equivalent strain value first increases the variation tendency reduced afterwards；With flange The increase of height, the deformation permeability increase of strand core；Under conditions of strand area of section is constant after deformation, with box side wall Inclination angle reduces, the increase of strand core equivalent strain value；Increase the fillet radius of box, strand transverse corner crack line is promoted to roll It heals in system deformation.
- 5. the operation roll of mill Curve Design according to claim 3 for being suitable for bloom and the big pressure of rectangular bloom high temperature, It is characterized in that, between working roll flange width coefficient θ is 0.4~0.8, flange height h is 5~45mm, flange radius of corner r For 5~15mm.
- 6. the operation roll of mill Curve Design according to claim 3 for being suitable for bloom and the big pressure of rectangular bloom high temperature, It is characterized in that, different according to strand size, work roller box type Sidewall Height H is 50~200mm, and box fillet radius R is 10~40mm, side wall inclination alpha are 90~120 degree.
- 7. the operation roll of mill Curve Design according to claim 3 for being suitable for bloom and the big pressure of rectangular bloom high temperature, It is characterized in that, working roll effective diameter D is 500~1000mm.
- 8. the operation roll of mill Curve Design according to claim 3 for being suitable for bloom and the big pressure of rectangular bloom high temperature, It is characterized in that, the continuous casting line that the big pressure milling train of the high temperature equipped with the working roll is directly arranged to conticaster exports end End, the continuous casting billet of continuous casting directly carry out the big pressure operation of rolling of high temperature.
- 9. the operation roll of mill Curve Design according to claim 8 for being suitable for bloom and the big pressure of rectangular bloom high temperature, It is characterized in that, bloom or the big pressure of rectangular bloom single pass high temperature are suitable for the milling equipment of the working roll Core deformation mechanism The lower operation of rolling, at this time casting speed be 0.4~1m/min, drafts of the roll reduction based on 10~50mm, reduction ratio It is up to 30~40%, realizes wick-containing and the hot core high temperature big pressure operation of rolling of the strand core solid rate 0.75~1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711086605.7A CN108067501B (en) | 2017-11-07 | 2017-11-07 | Operation roll of mill curve design method suitable for bloom and the big pressure of rectangular bloom high temperature |
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| CN201711086605.7A CN108067501B (en) | 2017-11-07 | 2017-11-07 | Operation roll of mill curve design method suitable for bloom and the big pressure of rectangular bloom high temperature |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110170524A (en) * | 2019-05-21 | 2019-08-27 | 柳州钢铁股份有限公司 | With the pass adjustment method of high line straight carbon steel pass schedule rolling stainless steel |
| CN110181016A (en) * | 2019-05-27 | 2019-08-30 | 北京首钢国际工程技术有限公司 | A kind of big pressure casting and rolling machine of the box-like heavy slab of 2+8 roller group |
| CN110508765A (en) * | 2019-09-09 | 2019-11-29 | 东北大学 | A kind of bloom continuous casting manufacturing method for being conducive to eliminate core defect |
| CN110899648A (en) * | 2019-11-08 | 2020-03-24 | 河钢股份有限公司 | Continuous casting method for improving internal quality of bearing steel continuous casting billet |
| CN111804729A (en) * | 2020-07-06 | 2020-10-23 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for producing medium and extra-thick plates through steel plate blanks under high-performance prepressing |
| US11123780B2 (en) | 2019-02-01 | 2021-09-21 | Northeastern University | Device and method for achieving core part press-down technology in continuous casting round billet solidification process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11123780B2 (en) | 2019-02-01 | 2021-09-21 | Northeastern University | Device and method for achieving core part press-down technology in continuous casting round billet solidification process |
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| CN111804729A (en) * | 2020-07-06 | 2020-10-23 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for producing medium and extra-thick plates through steel plate blanks under high-performance prepressing |
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| CN108067501B (en) | 2019-04-19 |
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