CN106001476B - A kind of method under the continuous dynamic weight of continuous casting billet two benches - Google Patents
A kind of method under the continuous dynamic weight of continuous casting billet two benches Download PDFInfo
- Publication number
- CN106001476B CN106001476B CN201610551771.9A CN201610551771A CN106001476B CN 106001476 B CN106001476 B CN 106001476B CN 201610551771 A CN201610551771 A CN 201610551771A CN 106001476 B CN106001476 B CN 106001476B
- Authority
- CN
- China
- Prior art keywords
- pressure
- stage
- fan
- withdrawal straightening
- continuous casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
Abstract
The invention belongs to continuous casting field, and in particular to the method under a kind of continuous dynamic weight of continuous casting billet two benches.Features of the present invention for large square bland continuous-casting machine and wide thickness plate continuous casting machine, method under a kind of continuous dynamic weight of two benches is provided, the specific process parameter design method of process implementing under weight is given, includes selection, division and the design of drafts of pressure range.The present invention, which crosses pressure in the first stage, improves strand segregation defects, and the rarefaction defect of strand is improved in the lasting pressure of second stage, improves it is achieved thereby that strand segregation is synchronous with loose.
Description
Technical field
The invention belongs to continuous casting field, and in particular to the method under a kind of continuous dynamic weight of continuous casting billet two benches.
Background technology
Big cross section billet caster, Slab Caster can substitute conventional die castings, and production is tight to rolling reduction requirement
The continuous casting billet of lattice, its recovery rate of iron can improve more than 10%, and energy consumption per ton steel can reduce by more than 25%, and uniformly steady with composition
Calmly, the advantages of surface quality is good, can significantly improve the performance of big specification strand product.However, with casting blank cross-section size
Increase, its internal cooling condition substantially deteriorates, and column trichite reaches in solidified structure, and interdendritic is rich in the remnants of solute segregation element
Molten steel flow tends to balance, and causes strand segregation, loose and shrinkage cavity defect further serious.These defects are in follow-up heating, rolling
During again be difficult to effectively elimination, so as to have impact on end product quality.
Solidification end soft reduction technique is to improve center segregation of casting blank and loose effective means, has become newly-built continuous casting
The generally outfit technology of machine.Bloom solidification end slighter compress relies primarily on air cooling zone withdrawal straightening machine pressure and completed, the list of slighter compress
Roller drafts is usually no more than 5mm, and pressure total amount is usually no more than 15mm.
However, with the increase of casting blank section, drafts is substantially reduced to the osmotic efficiency of strand center portion, conventional slighter compress
Drafts solidification shrinkage can not be fully compensated.At the same time, casting blank solidification latter stage, casting billet surface is formd naturally with center portion
Thermograde (up to more than 500 DEG C), if carrying out aximal deformation value pressure at this moment, drafts far surpasses to the osmotic efficiency of center portion
Rough rolling process (rough rolling process strand is samming base) is crossed, so that soldering solidification shrinkage cavity is can reach, or even refinement center portion austenite crystal
The technological effect of grain.According to this theory, a few countries have carried out improving upgrading to large square bland continuous-casting machine in the world, propose
Solidification end weight Reduction Technology.Continuous casting billet solidifying end weight Reduction Technology can realize pressure more than total amount 25mm pressure, far
More than the pressure total amount of slighter compress, so as to reach that soldering solidifies the technological effect of shrinkage cavity.
Current continuous casting billet solidifying end weight Reduction Technology realizes that for example Kawasaki, Japan iron is proposed using multiple technologies pattern
Continuous Forging (continuous forging) technology of bloom solidification end, the technology passes through installs one in solidification end
Continuous forging to strand is realized to chopping block, so as to improve strand center porosity.Nippon proposes NS Bloom
Large Reduction Technology (Nippon Steel's bloom weight Reduction Technology), it in strand by just having solidified at position
The convex roller of a pair of similar roughing mills is installed, the implementation under weight is realized.The POSharp technologies at South Korea Pu use fan-shaped section shape
Formula completes the implementation under solidification end weight, and its pressure range is in fs=0.05-0.6 scopes, reduction ratio 5-20mm/m.In addition,
The PCCS technologies of Sumitomo Metal Industries also carry out 10mm or so pressure using single roller, are descended with completing slab solidification end weight
Journey.
The continuous forging technology of Kawasaki Steel, the bloom weight Reduction Technology of Nippon Steel and the PCCS skills of Sumitomo Metal Industries
Art, is to complete the disposable implementation under weight in short-range using individual equipment, therefore it needs stronger equipment pressure
Lower ability.Although the POSharp technologies at Pu are completed using fan-shaped segment structure, its fan-shaped section is also fixed form, is arranged on
Fixed position.The depressing position that each heavy Reduction Technology is proposed is not quite similar, but does not provide particular location more.In fact, due to solidifying
Gu end with pulling rate, steel grade, the degree of superheat, cross dimensions it is different and far from each other, therefore fixed position pressure obviously can not
Process rationality is played to greatest extent.
The content of the invention
The problem of existing for prior art, the present invention provides the side under a kind of continuous dynamic weight of continuous casting billet two benches
Method, it is therefore an objective to for large square bland continuous-casting machine and the features of Slab Caster, improves solidification end solute segregation with dredging
Pine, lifts strand consistency.
Method under the continuous dynamic weight of continuous casting billet two benches of the present invention, described continuous casting billet is bloom, according to
Lower step is carried out：
Depressed using n platform bloom continuous casting withdrawal straightening machines, wherein being bloom center solid rate at pressure start position
The position of fs >=0.6, pressure terminal is that at strand inside center temperature and surface temperature difference≤200 DEG C position, bloom solidification is eventually
Point is located between m platforms and m+1 platform withdrawal straightening machines；
Depressed from the pressure of First withdrawal straightening machine to the m-1 platform withdrawal straightening machines of pressure starting point for the first stage, control first
Stage depresses overall reduction 10-20mm, and the first stage is in the incomplete resolidified region of bloom, and green shell is thick in this region
Degree increases with the rear shifting away from crystallizer position, and meets square root law, thus each withdrawal straightening machine drafts R into progressively doubling
The withdrawal straightening machine drafts of relation, i.e., i-th is a of the i-th -1 withdrawal straightening machine draftsiTimes：R2=a2·R1, R3=a3·R2, R4=
a4·R3……Ri=ai·Ri-1, wherein i >=2, aiTake 1.2-2.0；
The pressure of last withdrawal straightening machine is depressed for second stage before from m platforms withdrawal straightening machine to pressure terminal, second stage
Interior withdrawal straightening machine quantity >=2, every withdrawal straightening machine drafts >=5mm, second stage overall reduction 15-20mm, complete generous company
Under the continuous dynamic weight of the two benches of strand.
Wherein, described bloom cross dimensions >=200mm × 200mm, bloom steel grade be medium carbon steel, high-carbon steel, in
One kind in carbon alloy steel, high-carbon alloy steel.
Described withdrawal straightening machine is 5-12 platforms, and with long-range roll gap adjustable function, the maximum depression power of separate unit withdrawal straightening machine exists
In the range of 18kN-20kN, maximum reduction >=5mm, the hydraulic system pressure for controlling withdrawal straightening machine is 18MPa-21MPa, when described
Separate unit withdrawal straightening machine maximum reduction when being unable to reach 5mm, by 18-21MPa pressure pressed compacts.
Method under the continuous dynamic weight of the continuous casting billet two benches of the present invention, described continuous casting billet is wide and thick slab, according to
Following steps are carried out：
It is wide and thick slab horizontal segment center solid rate fs >=0.6 at the fan-shaped section pressure start position of Slab Caster
Position, using Coagulated hemothorax as the first stage pressure with second stage depress boundary, pressure terminal be strand inside center
At temperature and surface temperature difference≤200 DEG C position, when Coagulated hemothorax falls in some fan-shaped section, the fan-shaped section presses second stage pressure
Lower technique is performed, and outlet roll gap ensures the fan-shaped section reduction ratio >=4mm/m；
When carrying out first stage pressure, fan-shaped section reduction ratio is set as on 2-5mm/m, i.e. fan-shaped section length direction every meter
2-5mm is depressed, fan-shaped segment length is 2.0-2.5 meters, and single fan-shaped section drafts is 4mm-12.5mm；
When carrying out second stage pressure, fan-shaped section reduction ratio is set as 2-10mm/m, and single fan-shaped section drafts is
Under fan-shaped segment number >=2 in 4mm-25mm, second stage, the continuous dynamic weight of two benches for completing wide and thick slab continuous casting billet.
Wherein, described wide and thick slab section thickness >=150mm, width >=1000mm, it is medium carbon steel, low-carbon to be applicable steel grade
One kind in steel, peritectic steel, medium carbon alloy steel, low-carbon alloy steel.
When Slab Caster, which is limited to hydraulic system pressure, is unable to reach predetermined drafts, by the maximum of fan-shaped section
Pressed compact ability pressed compact.
Compared with prior art, the features of the present invention and beneficial effect are：
In technical solution of the present invention, the determination of pressure terminal is based on when strand internal-external temperature difference is smaller, internal and external temperature ladder
Degree has been not sufficient to ensure that casting billet surface drafts can be sufficiently transmitted to strand center portion, therefore pressure terminal is strand inside center temperature
Degree and the temperature difference of centre of surface temperature are less than or equal at 200 DEG C of positions.
It is to be located at based on the first stage in the incomplete resolidified region of strand under the two benches weight of the present invention, now depresses energy
Enough it is effectively improved strand segregation defects；Second stage is located at casting blank solidification terminal and is fully finished after solidification, is now pressed greatly
Lower amount implements that strand internal-external temperature difference can be made full use of, and significantly improves center porosity, lifts strand consistency.
The present invention is continuously dynamic there is provided a kind of two benches for the features of large square bland continuous-casting machine and wide thickness plate continuous casting machine
Method under weight, gives the specific process parameter design method of process implementing under weight, including pressure range selection, draw
Point and drafts design.The present invention, which crosses pressure in the first stage, improves strand segregation defects, in continuing for second stage
Pressure improves the rarefaction defect of strand, improves it is achieved thereby that strand segregation is synchronous with loose.
Brief description of the drawings
Fig. 1 is GCr15 bloom inside center temperature and centre of surface temperature variation in the embodiment of the present invention 1；
Fig. 2 be in the embodiment of the present invention 1 through the bloom under two benches weight with without the bloom under two benches weight
Low power transverse section contrast picture；
Wherein：(a) without the bloom transverse section under two benches weight；(b) the present embodiment is through big under two benches weight
Square billet transverse section；(c) transverse section of stocking is processed into without the bloom under two benches weight；(d) the present embodiment is through two benches
Bloom under weight is processed into the transverse section of stocking；
Through the wide and thick slab under two benches weight and without the width under two benches weight in Fig. 3 embodiment of the present invention 2
Heavy slab is wide to low power transverse section comparison diagram at 1/4 position；
Wherein：(a) without the wide and thick slab transverse section under two benches weight；(b) the present embodiment is through under two benches weight
Wide and thick slab transverse section.
Embodiment
Embodiment 1
There are 12 withdrawal straightening machine frames the large square bland continuous-casting machine of certain in the present embodiment cross dimensions 380mm × 490mm, air cooling zone,
Using 0.45m/min pulling rate integral bearing steel GCr15 when, pressure starting point be located at 3# withdrawal straightening machines position at, in bloom inside
Heart temperature and centre of surface temperature variation as shown in figure 1, as can be seen from Figure 1 pressure terminal be strand inside center temperature with
At the position of surface temperature difference≤200 DEG C, i.e., at 9# withdrawal straightening machines, Coagulated hemothorax is located between 7# and 8# withdrawal straightening machine frames；
First stage pressure is 3#-6# withdrawal straightening machines, and second stage pressure is 7#-9# withdrawal straightening machines, each withdrawal straightening machine drafts point
Cloth is as shown in the table.
Each withdrawal straightening machine drafts technique (mm) of table 1
Through the bloom under two benches weight picture is contrasted with the low power transverse section without the bloom under two benches weight
As shown in Fig. 2 after being provided with the continuous dynamic weight of the two benches for as can be seen from Figure 2 implementing the present invention, strand central pipe
Significantly improve, slab quality is greatly improved, be made into stocking center segregation after stocking and be substantially improved, strand and system
Into the flaw detection qualification rate of bar be obviously improved.
Embodiment 2
Certain wide thickness plate continuous casting machine cross dimensions 280mm × 1800mm, horizontal segment is made up of 5 fan-shaped sections, i.e. 9#-13#
Section.Fan-shaped segment length 2.1m, when producing Q345 with 0.85m/min pulling rate, Coagulated hemothorax is in 10# fan-shaped sections；
First stage pressure is 9# fan-shaped sections, and second stage pressure is 10#, 11# fan-shaped section, each fan-shaped section reduction settings
As shown in table 2.
Each fan-shaped section drafts technique (mm) of table 2
The present embodiment through the wide and thick slab under two benches weight with without the wide and thick slab under two benches weight wide to 1/4
Low power transverse section comparison diagram at position is as shown in figure 3, as can be seen from Figure 3 work under the continuous dynamic weight of two benches of the invention
Inner Quality of Billet is significantly improved after skill is implemented, and Line of Segregation is substantially eliminated, and greatly improves strand consistency.For 50mm
Thick hot rolled plate less than 20% be promoted to 100% without rolling under rear heap cool condition flaw detection qualification rate by original.
Claims (6)
1. the method under a kind of continuous dynamic weight of continuous casting billet two benches, it is characterised in that described continuous casting billet is bloom, is pressed
Carried out according to following steps：
Depressed using n platform bloom continuous casting withdrawal straightening machines, wherein pressure start position at be bloom center solid rate fs >=
0.6 position, pressure terminal is bloom Coagulated hemothorax position at strand inside center temperature and surface temperature difference≤200 DEG C position
Between m platforms and m+1 platform withdrawal straightening machines；
Depressed from the pressure of First withdrawal straightening machine to the m-1 platform withdrawal straightening machines of pressure starting point for the first stage, control the first stage
Depress overall reduction 10-20mm, the first stage be in bloom incomplete resolidified region in, in this region shell thickness with
Increase away from the rear shifting of crystallizer position, and meet square root law, therefore the drafts R of each withdrawal straightening machine is closed into progressively multiplication
System, i.e., i-th withdrawal straightening machine drafts is a of the i-th -1 withdrawal straightening machine draftsiTimes：R2=a2·R1, R3=a3·R2, R4=a4·
R3……Ri=ai·Ri-1, wherein i >=2, aiTake 1.2-2.0；
The pressure of last withdrawal straightening machine is depressed for second stage before from m platforms withdrawal straightening machine to pressure terminal, is drawn in second stage
Machine quantity >=2 are rectified, every withdrawal straightening machine drafts >=5mm, second stage overall reduction 15-20mm complete generous continuous casting billet
The continuous dynamic weight of two benches under.
2. the method under a kind of continuous dynamic weight of continuous casting billet two benches according to claim 1, it is characterised in that described
Bloom cross dimensions >=200mm × 200mm, bloom steel grade be medium carbon steel, high-carbon steel, medium carbon alloy steel, high carbon alloy
One kind in steel.
3. the method under a kind of continuous dynamic weight of continuous casting billet two benches according to claim 1, it is characterised in that described
Withdrawal straightening machine be 5-12 platforms, with long-range roll gap adjustable function, the maximum depression power of separate unit withdrawal straightening machine is in 18kN-20kN scopes
It is interior, maximum reduction >=5mm, control withdrawal straightening machine hydraulic system pressure be 18MPa-21MPa, when described separate unit withdrawal straightening machine most
When heavy reduction is unable to reach 5mm, by 18-21MPa pressure pressed compacts.
4. the method under a kind of continuous dynamic weight of continuous casting billet two benches, it is characterised in that described continuous casting billet is wide and thick slab,
Follow the steps below：
It is the position of wide and thick slab horizontal segment center solid rate fs >=0.6 at the fan-shaped section pressure start position of Slab Caster
Put, the boundary that pressure is depressed with second stage using Coagulated hemothorax as the first stage, pressure terminal is strand inside center temperature
At the position of surface temperature difference≤200 DEG C, when Coagulated hemothorax falls in some fan-shaped section, the fan-shaped section depresses work by second stage
Skill is performed, and outlet roll gap ensures the fan-shaped section reduction ratio >=4mm/m；
When carrying out first stage pressure, fan-shaped section reduction ratio is set as every meter of pressure on 2-5mm/m, i.e. fan-shaped section length direction
2-5mm, fan-shaped segment length is 2.0-2.5 meters, and single fan-shaped section drafts is 4mm-12.5mm；
When carrying out second stage pressure, fan-shaped section reduction ratio is set as 2-10mm/m, and single fan-shaped section drafts is 4mm-
Under fan-shaped segment number >=2 in 25mm, second stage, the continuous dynamic weight of two benches for completing wide and thick slab continuous casting billet.
5. the method under a kind of continuous dynamic weight of continuous casting billet two benches according to claim 4, it is characterised in that described
Wide and thick slab section thickness >=150mm, width >=1000mm, be applicable steel grade be medium carbon steel, mild steel, peritectic steel, middle carbon close
One kind in Jin Gang, low-carbon alloy steel.
6. the method under a kind of continuous dynamic weight of continuous casting billet two benches according to claim 4, it is characterised in that work as width
When Plate production is limited to hydraulic system pressure and is unable to reach predetermined drafts, it can be forced by the maximum pressed compact of fan-shaped section
Base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610551771.9A CN106001476B (en) | 2016-07-14 | 2016-07-14 | A kind of method under the continuous dynamic weight of continuous casting billet two benches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610551771.9A CN106001476B (en) | 2016-07-14 | 2016-07-14 | A kind of method under the continuous dynamic weight of continuous casting billet two benches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106001476A CN106001476A (en) | 2016-10-12 |
| CN106001476B true CN106001476B (en) | 2017-10-31 |
Family
ID=57117741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610551771.9A Active CN106001476B (en) | 2016-07-14 | 2016-07-14 | A kind of method under the continuous dynamic weight of continuous casting billet two benches |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106001476B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670414A (en) * | 2016-10-26 | 2017-05-17 | 首钢总公司 | Set method of fixed segment depressing continuous caster depressing mode |
| CN106735026B (en) * | 2016-12-09 | 2020-02-14 | 东北大学 | Single-point and continuous heavy pressing process for solidification tail end of continuous casting billet |
| CN107081412B (en) * | 2017-04-01 | 2019-08-09 | 唐山钢铁集团有限责任公司 | The preparation method of high-quality plastic die steel special heavy plate continuous casting mother's base |
| CN107081413B (en) * | 2017-04-01 | 2019-08-09 | 唐山钢铁集团有限责任公司 | The method for improving Steels for High Rise Buildings continuous casting billet central dense degree |
| CN107243611B (en) * | 2017-06-01 | 2019-01-11 | 东北大学 | A kind of bloom continuous casting solidification end list roller depressing position determines method |
| CN109142144B (en) * | 2018-07-20 | 2020-12-22 | 中冶连铸技术工程有限责任公司 | Method for analyzing homogenization degree of casting blank |
| CN109622904B (en) | 2019-02-01 | 2020-06-02 | 东北大学 | Device and method for realizing core pressing process in continuous casting round billet solidification process |
| CN110523937B (en) * | 2019-09-06 | 2021-07-23 | 首钢集团有限公司 | Pressing method and device |
| CN113843400A (en) | 2020-06-25 | 2021-12-28 | 宝山钢铁股份有限公司 | Slab cooling and reduction method for improving quality of casting blank |
| CN111760906B (en) * | 2020-06-29 | 2022-02-15 | 建龙北满特殊钢有限责任公司 | Blooming mill rolling process for improving internal quality of large-size bar |
| CN114101605B (en) * | 2021-11-24 | 2023-05-12 | 山东钢铁集团日照有限公司 | Method for improving low-power quality of continuous casting blank for wide and thick plate |
| CN114669723B (en) * | 2022-03-21 | 2024-05-17 | 江阴兴澄特种钢铁有限公司 | Control method for effective rolling interval of casting blank |
| CN116652143B (en) * | 2023-04-12 | 2024-05-07 | 重庆大学 | Online cooperative control method for light pressing and heavy pressing of bloom continuous casting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3671872B2 (en) * | 2001-06-20 | 2005-07-13 | 住友金属工業株式会社 | Continuous casting method of steel |
| CN102921914A (en) * | 2012-12-01 | 2013-02-13 | 新余钢铁集团有限公司 | Heavy reduction technology for improving center segregation and center porosity of super-thick slabs |
| WO2015079639A1 (en) * | 2013-11-29 | 2015-06-04 | Ｊｆｅスチール株式会社 | Method for manufacturing round billet |
| CN104858385A (en) * | 2015-05-22 | 2015-08-26 | 中冶连铸技术工程有限责任公司 | Light reduction or heavy reduction control method and device based on billet caster |
| CN104874758A (en) * | 2015-05-11 | 2015-09-02 | 中冶连铸技术工程有限责任公司 | Control method and device under continuous casting weight |
-
2016
- 2016-07-14 CN CN201610551771.9A patent/CN106001476B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3671872B2 (en) * | 2001-06-20 | 2005-07-13 | 住友金属工業株式会社 | Continuous casting method of steel |
| CN102921914A (en) * | 2012-12-01 | 2013-02-13 | 新余钢铁集团有限公司 | Heavy reduction technology for improving center segregation and center porosity of super-thick slabs |
| WO2015079639A1 (en) * | 2013-11-29 | 2015-06-04 | Ｊｆｅスチール株式会社 | Method for manufacturing round billet |
| CN104874758A (en) * | 2015-05-11 | 2015-09-02 | 中冶连铸技术工程有限责任公司 | Control method and device under continuous casting weight |
| CN104858385A (en) * | 2015-05-22 | 2015-08-26 | 中冶连铸技术工程有限责任公司 | Light reduction or heavy reduction control method and device based on billet caster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106001476A (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106001476B (en) | A kind of method under the continuous dynamic weight of continuous casting billet two benches | |
| CN101648212B (en) | Bloom continuous casting dynamic soft reduction process for prestressed steel SWRH82B | |
| CN104874758B (en) | Continuous casting weight pressing control method | |
| CN104399924B (en) | A kind of withdrawal straightening machine gradual curvature convex roller and using method for bloom continuous casting | |
| CN105108096B (en) | A kind of Properties of Heavy Rail Steel bloom continuous casting dynamic soft-reduction method for determination of amount | |
| CN111360221B (en) | Method for eliminating central shrinkage cavity and controlling central segregation of high-carbon steel with 280mm x 320mm section | |
| CN105945250B (en) | Improve the method for high-alloy billet internal soundness | |
| CN101648263B (en) | Bloom continuous casting dynamic soft reduction process for high-quality tire cord steel | |
| CN104399923B (en) | A kind of method producing special heavy plate continuous casting billet | |
| JP2004508942A (en) | Steel strip manufacturing method | |
| CN102398007B (en) | Soft reduction process for continuous casting of large square billet of high chrome alloy steel | |
| CN103397250B (en) | Large-piece-weight extremely-thick Q460-grade high-strength structural steel plate and manufacturing method thereof | |
| CN105618481B (en) | Equipment and process for conducting protruding roller rolling through continuous casting slab waste heat | |
| CN109396368A (en) | A method of improving high-carbon steel bloom continuous casting base internal soundness | |
| CN101811136A (en) | Magnesium alloy wide plate casting-rolling equipment | |
| CN106552912A (en) | The compact fan-shaped section of enhancement mode is used under a kind of weight of continuous casting and solidifying end | |
| CN105695886A (en) | Method for two-step manufacturing of high-nitrogen stainless steel plate through normal-pressure metallurgy | |
| CN101733376B (en) | Axle steel continuous casting method | |
| JP2004509770A (en) | Steel strip manufacturing method | |
| JP2018034197A (en) | Steel continuously cast piece and continuous casting method | |
| CN1563467A (en) | Manufacturing technique of hot rolled high tensile steel plate in use for cars based on compact type process flow of producing band steel | |
| JP3671868B2 (en) | Method for casting high Cr steel | |
| JP5195636B2 (en) | Manufacturing method of continuous cast slab | |
| CN103614653A (en) | Method for manufacturing mill roll | |
| CN109434056A (en) | A kind of double single-point weight soft reduction process of continuous casting billet solidifying end |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20161012 Assignee: MCC SOUTHERN CONTINUOUS CASTING TECHNOLOGY ENGINEERING Co.,Ltd. Assignor: Northeastern University Contract record no.: X2020210000038 Denomination of invention: A two stage continuous dynamic reduction method for continuous casting slab Granted publication date: 20171031 License type: Common License Record date: 20201223 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20161012 Assignee: HENAN JIYUAN IRON & STEEL (Group) Co.,Ltd. Assignor: Northeastern University Contract record no.: X2021210000052 Denomination of invention: A two-stage continuous dynamic reduction method of continuous casting slab Granted publication date: 20171031 License type: Common License Record date: 20211125 |