CN101164720A - Continuous casting method for increasing equal thickness continuous casting plate billet equal axial crystal rate in non-oriented silicon steel - Google Patents
Continuous casting method for increasing equal thickness continuous casting plate billet equal axial crystal rate in non-oriented silicon steel Download PDFInfo
- Publication number
- CN101164720A CN101164720A CNA2006100480714A CN200610048071A CN101164720A CN 101164720 A CN101164720 A CN 101164720A CN A2006100480714 A CNA2006100480714 A CN A2006100480714A CN 200610048071 A CN200610048071 A CN 200610048071A CN 101164720 A CN101164720 A CN 101164720A
- Authority
- CN
- China
- Prior art keywords
- continuous casting
- silicon steel
- cast method
- conticaster
- continuous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The present invention provides a continuous casting method capable of increasing non-oriented silicon steel medium-thickness continuous cast slab equiaxial crystal rate. It is characterized by that it adopts a medium-thickness slab continuous casting machine, in the continuous casting second cooling zone it adopts a roller electromagnetic stirring equipment. The casting billet size of continuous casting machine is 100-150mmX850-1550mm, pouring speed is 1.5-3.5m/min, the cooling pattern: the narrow edge of crystallizer is 14-25m3/h, the wide edge of crystallizer is 250-290m3/h and second cooling intensity is 1.3-1.8L/kg. The described electromagnetic stirring equipment includes 2-4 pairs of introroller built-in traveling wave magnetic field type electromagnetic stirring devices which are assembled into two groups and mounted.
Description
Technical field
The invention belongs to steel-making sheet billet continuous casting technical field, relate in particular to a kind of continuous cast method that increases non-orientation silicon steel intermediate gauge continuous casting steel billet equiaxial crystal ratio.
Background technology
Important quality problems of producing high grade non-oriented silicon steel in the world are, because the silicon steel heat-transfer capability is relatively poor and under the continuous-casting conditions of forcing cooling, make casting blank solidification organize the column crystal prosperity, the result causes the cold rolling non-orientation silicon steel finished surface to produce the corrugated defective.Production practices show, when cold rolling non-orientation silicon steel silicone content＞1.7% and carbon content≤0.01%, the strand column crystal is very flourishing.Flourishing column crystal can cause strand underbead crack and center segregation, makes hot rolled plate thick banded structure occur, and makes cold rolling finished surface occur being called the corrugated defective along rolling to scraggly ripple.This type of defective effect finished product apparent, and make that the lamination coefficient reduces, magnetic degenerates and make that resistance reduces between insulating film layer, the serviceability and the life-span of motor or power transformer product directly influenced.And increase the effective method of continuous casting steel billet equiaxial crystal ratio is to adopt electromagnetic agitation, and the silicon steel strand of the above conventional thickness slab caster of 200mm production all adopts electromagnetic agitation for this reason, adopts NST formula or box electromagnetic mixing apparatus mostly.As for sheet blank continuous castings such as CSP, ISP, because cooling velocity is fast, do not adopt electromagnetic agitation, the equiax crystal of thin plate strand and column crystal ratio are produced silicon steel and are not had the corrugated defective between 35%～75%.And for the conticaster of 100～150mm intermediate gauge, its pulling rate and strand cooling are between between the two above-mentioned, and the blank plates of silicon steels column crystal of being produced accounts for more than 90%, and equiaxed zone ratio is less than 10%.There is obvious corrugation defective in the non-orientation silicon steel of producing the trades mark such as 50W540,50W470 with it through steel rolling and finished products rear surface.Because the slab caster of 100～150mm intermediate gauge is a compact structure, the conticaster space is little, and two cold-zone bending sections and segmental arc roller footpath are less, have only 150mm and 175mm respectively, and conventional electromagnetic mixing apparatus can't be installed.At present, produce the silicon steel continuous casting steel billet, also do not improve the method for its equiaxed zone ratio with the slab caster of 100～150mm intermediate gauge, so, can't produce qualified high grade non-oriented silicon steel.
Summary of the invention
The object of the present invention is to provide a kind of use 100～150mm intermediate gauge conticaster to increase the method that the silicon steel equiaxial crystal ratio is produced high grade non-oriented silicon steel by electromagnetic agitation.
The present invention is achieved in that the characteristics of the continuous cast method of this increase non-orientation silicon steel intermediate gauge continuous casting steel billet equiaxial crystal ratio are that continuous casting adopts the cut deal conticaster, adopt the roll-type electromagnetic agitation at secondary cooling area for continuous casting.
The strand size of cut deal conticaster of the present invention: 100～150mm * 850～1550mm, casting blank surface temperature: 900～1100 ℃, casting rate: 1.5～3.5m/min, length of mould: 1000～1200mm, the mold oscillation frequency: 180～300 (cycle/min); Its cooling system: mould at narrow 14～25m
3/ h, crystallizer broadside 250～290m
3/ h, intensity of secondary cooling 1.3～1.8L/kg; The tundish submersed nozzle of conticaster is the mouth of a river, two holes, and mouth of a river angle is 10～25 °; Described roll-type electromagnetic agitation is a built-in travelling-magnetic-field type electromagnetic mixing apparatus in 2～4 pair rollers, and form between 2 groups of two cold-zones, 3.0～6.0m that are installed under the crystallizer liquid steel level, electromagnetic agitation roller diameter: 200～260mm, and adopt dicyclo butterfly whipped form and the alr mode that commutates, commutating period: 20～45 seconds, stir current: 700～1000A, stirring frequency: 4～10Hz.
The present invention adopts the roll-type electromagnetic agitation to make to produce in the molten steel circulation loop with the sheet billet continuous casting equipment of 100～150mm intermediate gauge in two cold-zones, molten steel collision slab leptoprosopy also is separated into up and down two plume bundles, is called " butterfly " pattern.Adopt the twin-stage combination to stir, use simultaneously by two groups of magnetic stirrers, can form three steel stream rings, the molten steel that gets off is above mixed in long distance range to greatest extent with the cold molten steel that the bottom is come, thereby the thermodynamics and kinetics condition when having improved silicon steel coagulation, column crystal flourishing in the strand obviously is inhibited, the strand proportion of equiaxed grain is increased to more than 45%, non-orientation silicon steel for Si≤3.0%, the up-to-standard rate in once rolling rear surface reaches 100%, has eliminated the surperficial corrugation defective of silicon steel finished product.
The mouth of a river, tundish immersion two hole that use angle of the present invention is 10～25 ° can make molten steel delivery port temperature field and flow field reasonable, makes liquid slag layer have enough thickness to guarantee that throwing is lubricated; prevent that the slag fusing is not enough; liquid slag layer is thin excessively, and it is inhomogeneous to cause that easily covering slag flows into, and produces the volume slag.Simultaneously, it is molten to prevent in the crystallizer that solidified shell is dashed, and causes the shell thickness inequality, causes casting billet surface depression and crackle to produce.
The present invention selects specific crystallizer cooling system for use, and the casting blank shell thickness that can guarantee out crystallizer is more than 18mm, to prevent the generation of continuous casting bleed-out and slab surface crack.Select for use specific secondary cooling system can guarantee that strand evenly cools off, prevent the expansion that produces the aligning crackle and crack at crystallizer.
Adopt the present invention can improve silicon steel continuous casting billet internal soundness and surface quality, also can improve the internal soundness of other steel grade, reduce center segregation and reach defectives such as C0.5 level, no center porosity and shrinkage cavity, no triangular area crack and corner crack, improve the solidified structure of strand, realize zero defect slab production under the high pulling rate condition.The present invention also can make the continuous casting steel degree of superheat improve more than 10 ℃ on 25 ± 5 ℃ of bases, thereby has created advantageous conditions for big organization of production.
The specific embodiment
The continuous cast method that the present invention increases non-orientation silicon steel intermediate gauge continuous casting steel billet equiaxial crystal ratio adopts the bow close-coupled sheet billet continuous casting equipment of upright curved 100～150mm intermediate gauge of continuous bend continuous straightening.Because the continuous casting flakiness ratio is big, casting machine adopts the configuration of solid matter roller again, and two cold-zone bending sections and segmental arc roller footpath are little, for making the as close as possible strand of magnetic stirrer, to improve its stirring intensity, reduce and stir required power, so the present invention selects built-in electromagnetic agitation in the roller.
The present invention is directed to single camber section two pairs of electromagnetic agitation equipment designs that roller has carried out are installed.The roll-type agitator of diameter phi 240mm is adopted in design, is installed in 1 section of conticaster camber and camber 2 paragraph header portions.Like this, continuous casting machine fan-shaped segment roller row are changed little, and can prevent effectively that casting blank bulging from producing.Specific design configuration is: outer arc respectively is provided with 7 rollers in each camber section, and two is the roll-type agitator of diameter phi 240mm, and back five is normal nip rolls, diameter phi 175mm.The electromagnetic agitation roller adopts monoblock type, and other nip rolls adopt three metamerism rollers.Charged magnetic stirs camber section roll spacing design: the roll spacing of inner arc agitating roller is 300mm, nip rolls roll spacing 200mm, and the roll spacing of outer arc agitating roller is 320mm, nip rolls roll spacing 214mm, the design and installation nozzle is 26 altogether, and nozzle is staggered to be installed, to eliminate the cooling blind area.This camber section adopts gas-fog cooling technology.The secondary cooling is divided into 8 cold-zones, and the water yield of each cooling zone equals the specific water and multiply by this loop apportionment ratio.The flow of secondary cooling water and compressed-air actuated pressure are to realize control automatically according to pre-determined model among the PLC, and the measuring water flow of secondary cooling water adopts electromagnetic flowmeter, and the control of air mass flow realizes by regulating pressure.
The preferred embodiment of the present invention is: adopt the slab caster of 100～150mm intermediate gauge, use electromagnetic agitation in two cold-zones and produce the silicon steel continuous casting billet.Conticaster cooling system: mould at narrow 18～21m
3/ h, crystallizer broadside 270～278m
3/ h; Intensity of secondary cooling 1.4～1.6L/kg.Mold oscillation frequency range 220～300 (cycle/min), amplitude range 6mm～9mm; Two hole submersed nozzles, 15～20 ° of mouth of a river angles; The degree of superheat of middle Baogang water is poured into a mould slab thickness 135～150mm at 20～40 ℃, and width is 900～1300mm, and the strand scale is 8000～12000mm to the maximum; Casting rate is 1.8/min～2.5m/min, and the surface temperature of strand is 900～1000 ℃.4 pair roller type magnetic stirrers are installed in respectively under the crystallizer liquid steel level between 4.0～6.0m; The electromagnetic agitation roller diameter is 240mm, dicyclo butterfly whipped form and commutation alr mode, and stirring parameter control, be 30～45 seconds commutating period, electric current and frequency 800～1000A/5～8Hz.
Embodiment 1:
Converter smelting, RH-TB application of vacuum obtain C:0.003%, Si:2.0%, Mn:0.25%, P:0.08%, S:0.005%, A1:0.25%, N:0.0035%, O:0.012%, microalloys such as Ti, V, Nb, Zr, Gr, Cu all＜0.005%, all the other are Fe, become slab and hot rolling with the casting speed continuous casting of 2.3m/min, pickling later on, the thick cold-reduced sheet of cold rolling one-tenth 0.5mm obtain the silicon steel production board through final annealing.Conticaster crystallizer cooling system: mould at narrow 18m
3/ h, crystallizer broadside 272m
3/ h; Two hole submersed nozzles, 15 ° of mouth of a river angles.The continuous casting billet proportion of equiaxed grain of producing with no electromagnetic agitation compares, referring to table 1.
Table 1 electromagnetic agitation and continuous casting process system are to the thick strand internal soundness influence of 135mm
Embodiment 2:
Converter smelting, RH-TB application of vacuum obtain C:0.0040%, Si:2.0%, Mn:0.3%, P:0.08%, S:0.004%, Al:0.27%, N:0.0040%, O:0.012%, microalloys such as Ti, V, Nb, Zr, Gr, Cu all＜0.005%, all the other are Fe, become slab and hot rolling with the casting speed continuous casting of 2.0m/min, pickling later on, the thick cold-reduced sheet of cold rolling one-tenth 0.5mm obtain the silicon steel production board through final annealing.Conticaster crystallizer cooling system: mould at narrow 19m
3/ h, crystallizer broadside 274m
3/ h; Two hole submersed nozzles, 15 ° of mouth of a river angles.The continuous casting billet proportion of equiaxed grain of producing with no electromagnetic agitation compares, referring to table 2.
Table 2 electromagnetic agitation and continuous casting process system are to the thick strand internal soundness influence of 150mm
Embodiment 3:
Converter smelting, RH-TB application of vacuum obtain C:0.003%, Si:2.0%, Mn:0.25%, P:0.08%, S:0.004%, Al:0.28%, N:0.0035%, O:0.011%, microalloys such as Ti, V, Nb, Zr, Gr, Cu all＜0.005%, all the other are Fe, become slab and hot rolling with the casting speed continuous casting of 2.5m/min, pickling later on, the thick cold-reduced sheet of cold rolling one-tenth 0.5mm obtain the silicon steel production board through final annealing.Conticaster crystallizer cooling system: mould at narrow 18m
3/ h, crystallizer broadside 270m
3/ h; Two hole submersed nozzles, 15 ° of mouth of a river angles.The continuous casting billet proportion of equiaxed grain of producing with no electromagnetic agitation compares, referring to table 3.
Table 3 electromagnetic agitation and continuous casting process system are to the thick strand internal soundness influence of 100mm
Table 1～table 3 all adopts low power and dendrite corrosion check, its assay: the strand proportion of equiaxed grain all reaches more than 45%, and center segregation reaches C0.5 level, no center porosity and defectives such as shrinkage cavity, triangular area crack and corner crack.
Claims (6)
1. a continuous cast method that increases non-orientation silicon steel intermediate gauge continuous casting steel billet equiaxial crystal ratio is characterized in that adopting the cut deal conticaster, adopts the roll-type electromagnetic agitation at secondary cooling area for continuous casting.
2. continuous cast method according to claim 1, the strand size that it is characterized in that described cut deal conticaster: 100～150mm * 850～1550mm, casting blank surface temperature: 900～1100 ℃, casting rate: 1.5～3.5m/min, length of mould: 1000～1200mm, the mold oscillation frequency: 180～300 (cycle/min).
3. continuous cast method according to claim 1 and 2 is characterized in that the cooling system of described cut deal conticaster: mould at narrow 14～25m
3/ h, crystallizer broadside 250～290m
3/ h, intensity of secondary cooling 1.3～1.8L/kg.
4. continuous cast method according to claim 1 and 2, the tundish submersed nozzle that it is characterized in that described conticaster are the mouth of a river, two holes, and mouth of a river angle is 10～25 °.
5. continuous cast method according to claim 1, it is characterized in that described roll-type electromagnetic agitation is a built-in travelling-magnetic-field type electromagnetic mixing apparatus in 2～4 pair rollers, and form between 2 groups of two cold-zones, 3.0～6.0m that are installed under the crystallizer liquid steel level, the electromagnetic agitation roller diameter is 200～260mm.
6. continuous cast method according to claim 5 is characterized in that described roll-type electromagnetic agitation adopts dicyclo butterfly whipped form and commutation alr mode, and be 20～45 seconds commutating period, and stir current is selected in 700～1000A, and stirring frequency is at 4～10Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100480714A CN101164720B (en) | 2006-10-19 | 2006-10-19 | Continuous casting method for increasing equal thickness continuous casting plate billet equal axial crystal rate in non-oriented silicon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100480714A CN101164720B (en) | 2006-10-19 | 2006-10-19 | Continuous casting method for increasing equal thickness continuous casting plate billet equal axial crystal rate in non-oriented silicon steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101164720A true CN101164720A (en) | 2008-04-23 |
| CN101164720B CN101164720B (en) | 2010-10-06 |
Family
ID=39333650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100480714A Expired - Fee Related CN101164720B (en) | 2006-10-19 | 2006-10-19 | Continuous casting method for increasing equal thickness continuous casting plate billet equal axial crystal rate in non-oriented silicon steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101164720B (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115830A (en) * | 2009-12-30 | 2011-07-06 | 舞阳钢铁有限责任公司 | Controlled cooling method for plate blank electroslag furnace |
| CN102380596A (en) * | 2011-11-21 | 2012-03-21 | 安阳钢铁股份有限公司 | Method for adjusting secondary cooling water amount and roll gap value of double-flow slab casting machine |
| CN102717042A (en) * | 2012-06-29 | 2012-10-10 | 秦皇岛首秦金属材料有限公司 | Modification method of fan-shaped section phi280 roller system of continuous casting machine |
| CN102145349B (en) * | 2010-02-08 | 2012-12-19 | 鞍钢股份有限公司 | Method for stably controlling finishing rolling temperature of oriented silicon steel |
| CN103468907A (en) * | 2013-09-18 | 2013-12-25 | 济钢集团有限公司 | Method for producing cold-rolled non-oriented electrical steel based on ASP (AnGang Strip Production) medium thin slab continuous casting and rolling process |
| CN103586430A (en) * | 2013-11-06 | 2014-02-19 | 河北省首钢迁安钢铁有限责任公司 | Production method of non-oriented electrical steel |
| CN104722726A (en) * | 2013-12-23 | 2015-06-24 | 鞍钢股份有限公司 | High-silicon electrical steel continuous casting production method |
| CN106483849A (en) * | 2016-11-14 | 2017-03-08 | 佛山科学技术学院 | A kind of method for numerical simulation of continuous casting billet center segregation behavioral study |
| CN107460292A (en) * | 2017-08-04 | 2017-12-12 | 北京首钢股份有限公司 | A kind of processing method for improving low temperature high magnetic induction grain-oriented silicon steel edge performance |
| CN109382491A (en) * | 2018-11-09 | 2019-02-26 | 鞍钢股份有限公司 | A kind of control method of high grade silicon steel slab quality |
| CN112045157A (en) * | 2020-07-24 | 2020-12-08 | 邯郸钢铁集团有限责任公司 | Production method of low-alloy high-strength wear-resistant steel slab |
| CN112881641A (en) * | 2021-01-19 | 2021-06-01 | 广西柳钢华创科技研发有限公司 | Method for measuring hypereutectoid steel continuous casting square billet isometric crystal rate |
| CN113000800A (en) * | 2021-02-25 | 2021-06-22 | 张家港宏昌钢板有限公司 | Method for improving surface and subcutaneous quality of plate blank by adopting electromagnetic stirring |
| CN113088654A (en) * | 2021-04-06 | 2021-07-09 | 山西太钢不锈钢股份有限公司 | Production method for improving macrosegregation of niobium-containing ferrite stainless steel plate |
| CN113102715A (en) * | 2021-04-13 | 2021-07-13 | 福建三宝钢铁有限公司 | Preparation method of non-oriented silicon steel 50SBW600 for high-voltage motor |
| CN113118398A (en) * | 2021-04-19 | 2021-07-16 | 山西太钢不锈钢股份有限公司 | Production method for eliminating large-grain carbide of high-carbon martensitic stainless steel continuous casting slab |
| CN113857449A (en) * | 2021-09-14 | 2021-12-31 | 湖南华菱涟源钢铁有限公司 | Preparation method of oriented silicon steel casting blank and casting blank system |
| CN114393185A (en) * | 2022-01-27 | 2022-04-26 | 马鞍山钢铁股份有限公司 | Method for improving isometric crystal rate of non-oriented electrical steel casting blank at high continuous casting speed |
| CN114734007A (en) * | 2022-05-16 | 2022-07-12 | 江苏省沙钢钢铁研究院有限公司 | Narrow-side bulging control method for high-grade silicon steel continuous casting billet |
| CN115283634A (en) * | 2022-08-12 | 2022-11-04 | 江苏省沙钢钢铁研究院有限公司 | Method for controlling equiaxed crystal rate of medium-high grade silicon steel |
| CN115380128A (en) * | 2020-04-07 | 2022-11-22 | 日本制铁株式会社 | Slab having excellent surface crack resistance and continuous casting method thereof |
| CN116117096A (en) * | 2023-01-04 | 2023-05-16 | 安庆新普电气设备有限公司 | High equiaxial crystal rate non-oriented electrical steel continuous casting billet and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796015A (en) * | 2004-12-28 | 2006-07-05 | 宝山钢铁股份有限公司 | Method for manufacturing cold rolling non oriented electrical steel through continuous casting and tandem rolling sheet bar |
-
2006
- 2006-10-19 CN CN2006100480714A patent/CN101164720B/en not_active Expired - Fee Related
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115830B (en) * | 2009-12-30 | 2014-03-12 | 舞阳钢铁有限责任公司 | Controlled cooling method for plate blank electroslag furnace |
| CN102115830A (en) * | 2009-12-30 | 2011-07-06 | 舞阳钢铁有限责任公司 | Controlled cooling method for plate blank electroslag furnace |
| CN102145349B (en) * | 2010-02-08 | 2012-12-19 | 鞍钢股份有限公司 | Method for stably controlling finishing rolling temperature of oriented silicon steel |
| CN102380596A (en) * | 2011-11-21 | 2012-03-21 | 安阳钢铁股份有限公司 | Method for adjusting secondary cooling water amount and roll gap value of double-flow slab casting machine |
| CN102380596B (en) * | 2011-11-21 | 2014-10-01 | 安阳钢铁股份有限公司 | Method for adjusting secondary cooling water amount and roll gap value of double-flow slab casting machine |
| CN102717042A (en) * | 2012-06-29 | 2012-10-10 | 秦皇岛首秦金属材料有限公司 | Modification method of fan-shaped section phi280 roller system of continuous casting machine |
| CN103468907A (en) * | 2013-09-18 | 2013-12-25 | 济钢集团有限公司 | Method for producing cold-rolled non-oriented electrical steel based on ASP (AnGang Strip Production) medium thin slab continuous casting and rolling process |
| CN103586430B (en) * | 2013-11-06 | 2016-08-24 | 北京首钢股份有限公司 | The production method of non-oriented electrical steel |
| CN103586430A (en) * | 2013-11-06 | 2014-02-19 | 河北省首钢迁安钢铁有限责任公司 | Production method of non-oriented electrical steel |
| CN104722726A (en) * | 2013-12-23 | 2015-06-24 | 鞍钢股份有限公司 | High-silicon electrical steel continuous casting production method |
| CN106483849A (en) * | 2016-11-14 | 2017-03-08 | 佛山科学技术学院 | A kind of method for numerical simulation of continuous casting billet center segregation behavioral study |
| CN107460292A (en) * | 2017-08-04 | 2017-12-12 | 北京首钢股份有限公司 | A kind of processing method for improving low temperature high magnetic induction grain-oriented silicon steel edge performance |
| CN109382491A (en) * | 2018-11-09 | 2019-02-26 | 鞍钢股份有限公司 | A kind of control method of high grade silicon steel slab quality |
| CN115380128A (en) * | 2020-04-07 | 2022-11-22 | 日本制铁株式会社 | Slab having excellent surface crack resistance and continuous casting method thereof |
| CN115380128B (en) * | 2020-04-07 | 2023-12-01 | 日本制铁株式会社 | Slab excellent in surface cracking resistance sensitivity and continuous casting method thereof |
| CN112045157A (en) * | 2020-07-24 | 2020-12-08 | 邯郸钢铁集团有限责任公司 | Production method of low-alloy high-strength wear-resistant steel slab |
| CN112881641A (en) * | 2021-01-19 | 2021-06-01 | 广西柳钢华创科技研发有限公司 | Method for measuring hypereutectoid steel continuous casting square billet isometric crystal rate |
| CN113000800A (en) * | 2021-02-25 | 2021-06-22 | 张家港宏昌钢板有限公司 | Method for improving surface and subcutaneous quality of plate blank by adopting electromagnetic stirring |
| CN113088654A (en) * | 2021-04-06 | 2021-07-09 | 山西太钢不锈钢股份有限公司 | Production method for improving macrosegregation of niobium-containing ferrite stainless steel plate |
| CN113102715A (en) * | 2021-04-13 | 2021-07-13 | 福建三宝钢铁有限公司 | Preparation method of non-oriented silicon steel 50SBW600 for high-voltage motor |
| CN113118398A (en) * | 2021-04-19 | 2021-07-16 | 山西太钢不锈钢股份有限公司 | Production method for eliminating large-grain carbide of high-carbon martensitic stainless steel continuous casting slab |
| CN113857449A (en) * | 2021-09-14 | 2021-12-31 | 湖南华菱涟源钢铁有限公司 | Preparation method of oriented silicon steel casting blank and casting blank system |
| CN113857449B (en) * | 2021-09-14 | 2023-10-10 | 湖南华菱涟源钢铁有限公司 | Preparation method of oriented silicon steel casting blank and casting blank system |
| CN114393185A (en) * | 2022-01-27 | 2022-04-26 | 马鞍山钢铁股份有限公司 | Method for improving isometric crystal rate of non-oriented electrical steel casting blank at high continuous casting speed |
| CN114393185B (en) * | 2022-01-27 | 2023-08-15 | 马鞍山钢铁股份有限公司 | Method for improving equiaxial crystal rate of non-oriented electrical steel casting blank at high continuous casting speed |
| CN114734007B (en) * | 2022-05-16 | 2023-09-01 | 江苏省沙钢钢铁研究院有限公司 | Narrow side bulging control method for high-grade silicon steel continuous casting blank |
| CN114734007A (en) * | 2022-05-16 | 2022-07-12 | 江苏省沙钢钢铁研究院有限公司 | Narrow-side bulging control method for high-grade silicon steel continuous casting billet |
| CN115283634B (en) * | 2022-08-12 | 2023-09-01 | 江苏省沙钢钢铁研究院有限公司 | Method for controlling equiaxial crystal rate of medium-high grade silicon steel |
| CN115283634A (en) * | 2022-08-12 | 2022-11-04 | 江苏省沙钢钢铁研究院有限公司 | Method for controlling equiaxed crystal rate of medium-high grade silicon steel |
| CN116117096A (en) * | 2023-01-04 | 2023-05-16 | 安庆新普电气设备有限公司 | High equiaxial crystal rate non-oriented electrical steel continuous casting billet and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101164720B (en) | 2010-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101164720B (en) | Continuous casting method for increasing equal thickness continuous casting plate billet equal axial crystal rate in non-oriented silicon steel | |
| CN105397045B (en) | The casting and rolling device and casting-rolling method of a kind of aluminum alloy slab | |
| Yasunaka et al. | Surface quality of stainless steel type 304 cast by twin-roll type strip caster | |
| CN113102714B (en) | Continuous casting cooling method for controlling peritectic steel slab corner cracks | |
| CN102069165A (en) | Method for preparing non-oriented silicon steel columnar crystal thin strip blank by twin-roll thin strip continuous casting | |
| CN103008587B (en) | A kind of thin strap continuous casting anti-oxidation iron sheet generation method | |
| CN102049479B (en) | Method for preparing non-oriented silicon steel equiaxial thin strip by adopting twin-roll strip continuous casting | |
| CN101376164B (en) | Control method of roll forming of twin-roll thin strip continuous casting cooling roll | |
| US2882571A (en) | Method of casting metals | |
| CN107321942A (en) | A kind of vertical casting-rolling technology of aluminium alloy and device | |
| CN107552752A (en) | Large section Properties of Heavy Rail Steel green shell steady quality control method | |
| JP2005103604A (en) | Continuous casting method, continuous casting cast slab, and steel plate | |
| CN110814312B (en) | Production method of ultra-clean metal plate | |
| JPH09508070A (en) | Thin slab manufacturing method and continuous casting apparatus | |
| CN105665662B (en) | Flux-cored wire based on ESP lines steel making method | |
| CN100493774C (en) | Method for controlling band shape of thin band continuously casting | |
| CN114054710B (en) | Method for improving center quality of large-section rectangular continuous casting billet | |
| EP3597328B1 (en) | Continuous casting method for steel | |
| JP2001062550A (en) | Casting piece cooling method in continuous casting | |
| CN113927008A (en) | Production method for inhibiting periodic fluctuation of liquid level of dual-phase steel crystallizer for slab production | |
| US4298050A (en) | Process for continuous casting of a slightly deoxidized steel slab | |
| KR100958029B1 (en) | A Method of Manufacturing A Ferrite Stainless Steel | |
| JPS60162564A (en) | Vertical type continuous casting method | |
| CN117463986B (en) | Method for improving castability of ultra-thick high-carbon steel | |
| JPH0890182A (en) | Method for continuously casting wide and thin cast slab |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20211019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |