CN1743128A - Method for producing oriented silicon steel band by direct rolling of continuous cast plate slab - Google Patents
Method for producing oriented silicon steel band by direct rolling of continuous cast plate slab Download PDFInfo
- Publication number
- CN1743128A CN1743128A CN 200510047295 CN200510047295A CN1743128A CN 1743128 A CN1743128 A CN 1743128A CN 200510047295 CN200510047295 CN 200510047295 CN 200510047295 A CN200510047295 A CN 200510047295A CN 1743128 A CN1743128 A CN 1743128A
- Authority
- CN
- China
- Prior art keywords
- steel
- temperature
- rolling
- annealing
- silicon steel
- 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.)
- Pending
Links
Landscapes
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
A method for producing orientated silicon strip by continuously casting slab blank is disclosed. The processing step as follows: continuously cast slab, additional heat it, hot roll, normalizing anneal, cold roll, decarburizing anneal, high temperature anneal. It features that after the continuously-cast blank is produced, the blank is additionally heated and hot rolled, the additional-heating temperature is 1150-1220 deg.C, time is 210-240 min. Advantages: the cooling process for the continuously-cast blank is saved to solve the problem of inhibitor precipitation, reduced burning damage and energy consumption, prolonged service life and raised production efficiency and product quality.
Description
Technical field
The present invention relates to the rolling method of a kind of silicon steel, be specifically related to a kind of method of producing oriented silicon steel band by direct rolling of continuous cast plate slab.
Background technology
At present, orientation silicon steel generally adopts continuous casting steel billet production, and its processing step is, produces continuous casting steel billet earlier, after the cooling, carries out the high temperature heating before entering hot-rolling mill, carries out hot rolling, normalizing annealing, cold rolling, decarburizing annealing and high annealing afterwards.
In order to obtain good Gauss's orientation texture, reduce the magnetic of iron loss and raising orientation silicon steel, in continuous casting steel billet, need to add inhibitor forming elements such as Mn, S, Al and N.
In order to guarantee that continuous casting steel billet thick MnS, AlN inhibitor in heating process pine for complete solid solution adding, the heating-up temperature of common orientation silicon steel strand need guarantee at 1350～1370 ℃, and in the high magnetic induction grain-oriented silicon steel because Mn and S content height, the heating-up temperature of strand is higher, reaches 1380～1400 ℃.
Separate out problem for the solid solution and the disperse that solve MnS and AlN inhibitor, need continuous casting steel billet is carried out the high temperature heating in the conventional production process flow process, the high temperature heating causes shortcomings such as slab scaling loss, fuel consumption height and heating furnace life-span weak point.Because high temperature heating back orientation silicon steel becomes intricate unusually in link processes such as rolling, cooling subsequently and annealing.At different production equipments, need to formulate different orientation silicon steel production technologies.The orientation silicon steel that different production technologies is produced is owing to widely different cause its iron loss and the magnetic induction horizontal rank of its grain orientation with size differs greatly.It is very big to produce high-quality orientation silicon steel difficulty, and production cost is higher.
Summary of the invention
At the defective that the existing production technology of oriented silicon steel band exists, the invention provides a kind of method of producing oriented silicon steel band by direct rolling of continuous cast plate slab, reach the simplification technological process, cut down the consumption of energy significantly, reduce production costs, produce high-quality oriented silicon steel band.
The technical scheme that realizes the object of the invention is: processing step comprises that continuous casting steel billet, hot rolling, normalizing are degenerated, cold rolling, decarburizing annealing, high annealing, and main points are that processing step and process conditions are:
At first design orientation silicon steel matrix element and inhibitor element composition, by percentage to the quality: C0.025～0.08%, Si2.8～4.0%, Mn0.03～0.14%, S0.01～0.06%, Al0.016～0.07%, N0.004～0.012%, Cu0.03～0.14%, Sn0.07～0.15%, Se0.01～0.05%, surplus are Fe.
With this composition that designs, smelting molten steel is produced continuous casting steel billet, and the strand temperature is 800～1100 ℃, and the slab pulling rate is 2～3m/min;
Afterwards, directly continuous casting steel billet is compensated heating, the compensation heating-up temperature is 1150～1220 ℃, and the time is 210～240 minutes;
Carry out hot rolling after the compensation heating, hot rolling roughing inlet temperature is 1130～1200 ℃, the finish rolling inlet temperature is 950～1100 ℃, finishing temperature is 850～1000 ℃, afterwards hot rolled strip is cooled off, the control cooling velocity is 10～100 ℃/s, hot rolled strip is batched afterwards again, and coiling temperature is 550～650 ℃;
To the normalizing annealing of band steel, divide the two-part normalizing to handle, the one section temperature is controlled to be 990～1100 ℃, and the time is 20～60s, and two sections temperature are controlled to be 920～950 ℃, and the time is 60～120s, cools off in 90～99 ℃ of water afterwards;
Band steel after normalizing handled carries out cold rolling, and cold rolling total deformation is 80%～95%, is coated with Na at belt steel surface during cold rolling third and fourth passage
2CO
3The aqueous solution, keeping belt steel temperature is 200～250 ℃;
Cold rolling back band steel is carried out decarburizing annealing, carry out alkali cleaning before the annealing and dry steel strip surface, adopt two sections decarburizing annealings, one section control temperature is 850～880 ℃, time 120～240s, and two sections control temperature are 880～910 ℃, time is 10～60s, adopting wet atmosphere, volume ratio is 75～80% nitrogen+20～25% hydrogen, 30～50 ℃ of dew points, and logical that do, the volume ratio of cooling section is 75～80% nitrogen+20～25% hydrogen;
Carrying out high annealing at last, be coated with MgO at belt steel surface before the high annealing, is under the atmosphere of 55～60% hydrogen+40～45% nitrogen in volume ratio, at first be warming up to 840～870 ℃, insulation 4h is heated to 1190～1220 ℃ then in 100% hydrogen atmosphere, insulation 15～25h.
Above-mentioned continuous casting steel billet is that the molten steel that refining is good utilizes conticaster to produce the continuous casting steel billet of 90mm～260mm.Continuous casting steel billet directly carries out hot rolling after the overcompensation heating, the thickness after the hot rolling roughing is 25～45mm, and the thickness after the finish to gauge is 2.0～4.0mm.
To the coil after the hot rolling, through after the normalizing annealing, carry out cold rolling, cold rolling before belt steel thickness be 2.0～4.0mm, the belt steel thickness after cold rolling is 0.2～0.4mm.
Coil after cold rolling, through decarburizing annealing, carrying out high annealing at last is to adopt the high temperature cover annealing.
Significant advantage of the present invention and good effect are:
Because the present invention has taked smelting molten steel, produce continuous casting steel billet, through the technical scheme of direct compensation heating, hot rolling, saved in the prior art like this, after producing continuous casting steel billet, carry out cooling procedure to slab, solved the problem of separating out that causes inhibitor because of the slab cooling;
Before hot rolling, adopt the compensation heating of limit portion, solved the low problem of slab limit portion temperature; Owing to, solved slab high temperature heating problems with compensation heating technique scheme, reduced scaling loss, prolonged the heating furnace life-span, reduced energy consumption in the production process, reduced production cost, improved production efficiency, improved product quality.
The specific embodiment
Embodiment 1
Carry out the design of orientation silicon steel matrix element and inhibitor elementary composition at this technological process, the consisting of of orientation silicon steel by percentage to the quality: C0.04%, Si3.0%, Mn0.1%, S0.03%, Al0.04%, N0.008%, Cu0.08%, Sn0.11%, Se0.03%, surplus is Fe.
The concrete rolling mill practice of orientation silicon steel is as follows.
(1) adopt above-mentioned design mix, smelted molten steel, utilize thin-slab caster to produce the 90mm continuous-casting sheet billet, the sheet billet pulling rate is 2.0m/min, the strand temperature is 800 ℃.
(2) strand is compensated heating in heating furnace, heating-up temperature is 1220 ℃, and the time is 210 minutes.
(3) slab after the heating carries out roughing, and the roughing inlet temperature is 1200 ℃, and outgoing gauge is 25mm, and the finish rolling inlet temperature is 950 ℃, and finishing temperature is 850 ℃, and outgoing gauge is 2.0mm.Hot-strip enters the laminar flow cooling zone and cools off, and the control cooling velocity is that 10 ℃/s hot-strip enters coiling machine after rolling and curls, and coiling temperature is 550 ℃.
(4) coil of strip carries out two-part normalizing processing before cold rolling, and the one section temperature is controlled to be 1000 ℃, and the time is 40s, and two sections temperature are controlled to be 935 ℃, and the time is 90s, cools off in 95 ℃ of water.
(5) the band steel after normalizing is handled carries out cold rollingly, and ingoing ga(u)ge is 3.0mm, and outgoing gauge is 0.3mm, total deformation 90.0%, and cold rolling third and fourth passage is coated with Na at belt steel surface
2CO
3The aqueous solution, keeping belt steel temperature is 200 ℃.
(6) cold rolling back band steel is carried out decarburizing annealing, the preceding alkali cleaning of annealing is also dried surface of steel plate, be rapidly heated then, adopt two-part decarburizing annealing, controlling one section temperature is 865 ℃, time is 180s, controlling two sections temperature is 895 ℃, and the time is 35s, and the atmosphere of employing is wet 78% nitrogen+22% hydrogen (volume ratio), 43 ℃ of dew points, logical 78% nitrogen+22% hydrogen (volume ratio) done of cooling section.
(7) at last with the high annealing of steel, be coated with MgO at belt steel surface before the high annealing, adopt the high temperature cover annealing then, the atmosphere of employing is 58%H
2+ 42%N
2(volume ratio) at first is warming up to 855 ℃, and insulation 5h is then at 100%H
2Be heated to 1205 ℃ in the atmosphere, insulation 20h.
Embodiment 2
Carry out the design of orientation silicon steel matrix element and inhibitor elementary composition at this technological process, the consisting of of orientation silicon steel by percentage to the quality: C0.025%, Si4.0%, Mn0.03%, S0.01%, Al0.07%, N0.012%, Cu0.03%, Sn0.07%, Se0.05%, surplus is Fe.
The concrete rolling mill practice of orientation silicon steel is as follows.
(1) adopt above-mentioned design mix, smelting steel well, utilize thin-slab caster to produce the 175mm continuous-casting sheet billet, the sheet billet pulling rate is 2.5m/min, and the strand temperature is 950 ℃.
(2) strand is compensated heating in heating furnace, heating-up temperature is 1180 ℃, and the time is 220 minutes.
(3) slab after the heating carries out roughing, and the roughing inlet temperature is 1160 ℃, and outgoing gauge is 35mm, and the finish rolling inlet temperature is 1000 ℃, and finishing temperature is 920 ℃, and outgoing gauge is 3.0mm.Hot-strip enters the laminar flow cooling zone and cools off, and the control cooling velocity is that 50 ℃/s hot-strip enters coiling machine after rolling and curls, and coiling temperature is 600 ℃.
(4) coil of strip carries out two-part normalizing processing before cold rolling, and the one section temperature is controlled to be 990 ℃, and the time is 20s, and two sections temperature are controlled to be 920 ℃, and the time is 120s, cools off in 99 ℃ of water.
(5) the band steel after normalizing is handled carries out cold rollingly, and ingoing ga(u)ge is 2.0mm, and outgoing gauge is 0.4mm, and total deformation is 80%, and cold rolling third and fourth passage is at belt steel surface surface coating Na
2CO
3The aqueous solution, keeping belt steel temperature is 210 ℃.
(6) cold rolling back band steel is carried out decarburizing annealing, the preceding alkali cleaning of annealing is also dried surface of steel plate, be rapidly heated then, adopt two-part decarburizing annealing, controlling one section temperature is 850 ℃, time is 120s, controlling two sections temperature is 880 ℃, and the time is 60s, and the atmosphere of employing is wet 75% nitrogen+25% hydrogen (volume ratio), 45 ℃ of dew points, logical 75% nitrogen+25% hydrogen (volume ratio) done of cooling section.
(7) at last with the high annealing of steel, be coated with MgO at belt steel surface before the high annealing, adopt the high temperature cover annealing then, the atmosphere of employing is 55%H
2+ 45%N
2(volume ratio) at first is warming up to 840 ℃, and insulation 6h is then at 100%H
2Be heated to 1190 ℃ in the atmosphere, insulation 15h.
Embodiment 3
Carry out orientation silicon steel matrix element and the design of inhibitor elementary composition at this technological process, orientation silicon steel by percentage to the quality consists of: C0.08%, Si2.8%, Mn0.14%, S0.06%, Al0.016%, N0.004%, Cu0.14%, Sn0.15%, Se0.01%, surplus is Fe.
The concrete rolling mill practice of orientation silicon steel is as follows.
(1) adopt above-mentioned design mix, smelting steel well, utilize thin-slab caster to produce the 260mm continuous-casting sheet billet, the sheet billet pulling rate is 3m/min, and the strand temperature is 1100 ℃.
(2) strand is compensated heating in heating furnace, heating-up temperature is 1150 ℃, and the time is 240 minutes.
(3) slab after the heating carries out roughing, and the roughing inlet temperature is 1130 ℃, and outgoing gauge is 45mm, and the finish rolling inlet temperature is 1100 ℃, and finishing temperature is 950 ℃, and outgoing gauge is 4.0mm.Hot-strip enters the laminar flow cooling zone and cools off, and the control cooling velocity is that 100 ℃/s hot-strip enters coiling machine after rolling and curls, and coiling temperature is 650 ℃.
(4) coil of strip needs to carry out two-part normalizing processing before cold rolling, and the one section temperature is controlled to be 1100 ℃, and the time is 60s, and two sections temperature are controlled to be 950 ℃, and the time is 60s, cools off in 90 ℃ of water.
(5) the band steel after normalizing is handled carries out cold rollingly, and ingoing ga(u)ge is 4.0mm, and outgoing gauge is 0.2mm, and total deformation is 95%, and cold rolling third and fourth passage is at belt steel surface surface coating Na
2CO
3The aqueous solution, keeping belt steel temperature is 250 ℃.
(6) cold rolling back band steel is carried out decarburizing annealing, the preceding alkali cleaning of annealing is also dried surface of steel plate, be rapidly heated then, adopt two-part decarburizing annealing, controlling one section temperature is 880 ℃, time is 240s, controlling two sections temperature is 910 ℃, and the time is 10s, and the atmosphere of employing is wet 80% nitrogen+20% hydrogen (volume ratio), 50 ℃ of dew points, logical 80% nitrogen+20% hydrogen (volume ratio) done of cooling section.
(7) at last with the high annealing of steel, be coated with MgO at belt steel surface before the high annealing, adopt the high temperature cover annealing then, the atmosphere of employing is 60%H
2+ 40%N
2(volume ratio) at first is warming up to 870 ℃, and insulation 4h is then at 100%H
2Be heated to 1210 ℃ in the atmosphere, insulation 25h.
Claims (5)
1, a kind of method of producing oriented silicon steel band by direct rolling of continuous cast plate slab, processing step comprise continuous casting steel billet, hot rolling, normalizing annealing, cold rolling, decarburizing annealing, high annealing, it is characterized in that processing step and process conditions are:
Design orientation silicon steel matrix element and inhibitor element composition, be by percentage to the quality: C 0.025～0.08%, Si2.8～4.0%, Mn 0.03～0.14%, and S 0.01～0.06%, Al 0.016～0.07%, N 0.004～0.012%, and Cu 0.03～0.14%, and Sn 0.07～0.15%, Se 0.01～0.05%, and surplus is Fe; With this
The composition of design, smelting molten steel is produced continuous casting steel billet, and the strand temperature is 800～1100 ℃, and the slab pulling rate is 2～3m/min; Afterwards
Continuous casting steel billet is directly compensated heating, and the compensation heating-up temperature is 1150～1220 ℃, and the time is 210～240 minutes; After the compensation heating
Carry out hot rolling, hot rolling roughing inlet temperature is 1130～1200 ℃, the finish rolling inlet temperature is 950～1100 ℃, finishing temperature is 850～1000 ℃, afterwards hot rolled strip is cooled off, the control cooling velocity is 10～100 ℃/s, hot rolled strip is batched afterwards again, and coiling temperature is 500～650 ℃; Right
Batch the normalizing annealing of band steel, divide the two-part normalizing to handle, the one section temperature is controlled to be 990～1100 ℃, and the time is 20～60s, and two sections temperature are controlled to be 920～950 ℃, and the time is 60～120s, cools off in 90～99 ℃ of water afterwards;
Band steel after normalizing handled carries out cold rolling, and cold rolling total deformation is 80%～95%, is coated with Na at belt steel surface during cold rolling third and fourth passage
2CO
3The aqueous solution, keeping belt steel temperature is 200～250 ℃; Will
Cold rolling back band steel carries out decarburizing annealing, carry out alkali cleaning before the annealing and dry steel strip surface, adopt two sections decarburizing annealings, one section control temperature is 850～880 ℃, time 120～240s, and two sections control temperature are 880～910 ℃, time is 10～60s, adopting wet atmosphere, volume ratio is 75～80% nitrogen+20～25% hydrogen, 30～50 ℃ of dew points, and logical that do, the volume ratio of cooling section is 75～80% nitrogen+20～25% hydrogen; At last
Carrying out high annealing, be coated with MgO at belt steel surface before the high annealing, is under the atmosphere of 55～60% hydrogen+40～45% nitrogen in volume ratio, at first be warming up to 840～870 ℃, insulation 4h is heated to 1190～1220 ℃ then in 100% hydrogen atmosphere, insulation 15～25h.
2, according to the method for the described producing oriented silicon steel band by direct rolling of continuous cast plate slab of claim 1, it is characterized in that: described continuous casting steel billet is that the molten steel that refining is good utilizes slab caster to produce the continuous casting steel billet of 90mm～260mm.
3, according to the method for the described producing oriented silicon steel band by direct rolling of continuous cast plate slab of claim 1, it is characterized in that: thickness is 25～45mm after the continuous casting steel billet process hot rolling roughing, thickness is 2.0～4.0mm after the hot rolling finish to gauge, be with steel to enter the laminar flow cooling zone after the hot rolling and cool off, enter coiling machine at last and curl.
4, according to the method for the described producing oriented silicon steel band by direct rolling of continuous cast plate slab of claim 1, it is characterized in that cold rolling before thickness be 2.0～4.0mm, the belt steel thickness after cold rolling is 0.2～0.4mm.
5, according to the method for the described producing oriented silicon steel band by direct rolling of continuous cast plate slab of claim 1, it is characterized in that being with steel to carry out high annealing is to adopt the high temperature cover annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510047295 CN1743128A (en) | 2005-09-29 | 2005-09-29 | Method for producing oriented silicon steel band by direct rolling of continuous cast plate slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510047295 CN1743128A (en) | 2005-09-29 | 2005-09-29 | Method for producing oriented silicon steel band by direct rolling of continuous cast plate slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1743128A true CN1743128A (en) | 2006-03-08 |
Family
ID=36138724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510047295 Pending CN1743128A (en) | 2005-09-29 | 2005-09-29 | Method for producing oriented silicon steel band by direct rolling of continuous cast plate slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1743128A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418367B (en) * | 2007-10-25 | 2010-11-17 | 新万鑫（福建）精密薄板有限公司 | Carbon elimination process for non-oriented silicon steel production |
| CN102186999A (en) * | 2008-10-17 | 2011-09-14 | 西门子Vai金属科技有限责任公司 | Method and device for producing hot-rolled strip from silicon steel |
| CN101748258B (en) * | 2008-12-12 | 2011-09-28 | 鞍钢股份有限公司 | Production method for improving magnetic property of low-temperature GO oriented silicon steel |
| CN101748259B (en) * | 2008-12-12 | 2011-12-07 | 鞍钢股份有限公司 | Method for producing high-magnetic-induction oriented silicon steel by low-temperature heating |
| CN101768697B (en) * | 2008-12-31 | 2012-09-19 | 宝山钢铁股份有限公司 | Method for manufacturing oriented silicon steel with one-step cold rolling method |
| CN102102141B (en) * | 2009-12-22 | 2013-12-11 | 鞍钢股份有限公司 | Hot rolling process for improving texture uniformity of oriented silicon steel plate |
| CN103882203A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Hot rolling method for improving electromagnetic performance of silicon steel |
| CN106435356A (en) * | 2016-09-13 | 2017-02-22 | 北京首钢股份有限公司 | Method for producing non-oriented band steel for stamping |
| CN113083896A (en) * | 2021-02-20 | 2021-07-09 | 张家港宏昌钢板有限公司 | Process for controlling burr-like thickness fluctuation of silicon steel and silicon steel sheet product prepared by same |
| CN114769544A (en) * | 2020-11-25 | 2022-07-22 | 宝钢德盛不锈钢有限公司 | Production method for reducing mountain scale at edge of hot-rolled 200-series stainless steel coil |
-
2005
- 2005-09-29 CN CN 200510047295 patent/CN1743128A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418367B (en) * | 2007-10-25 | 2010-11-17 | 新万鑫（福建）精密薄板有限公司 | Carbon elimination process for non-oriented silicon steel production |
| CN102186999B (en) * | 2008-10-17 | 2015-08-12 | 西门子Vai金属科技有限责任公司 | For being produced the method and apparatus of hot rolled band-rolling thing by silicon steel |
| CN102186999A (en) * | 2008-10-17 | 2011-09-14 | 西门子Vai金属科技有限责任公司 | Method and device for producing hot-rolled strip from silicon steel |
| CN101748258B (en) * | 2008-12-12 | 2011-09-28 | 鞍钢股份有限公司 | Production method for improving magnetic property of low-temperature GO oriented silicon steel |
| CN101748259B (en) * | 2008-12-12 | 2011-12-07 | 鞍钢股份有限公司 | Method for producing high-magnetic-induction oriented silicon steel by low-temperature heating |
| CN101768697B (en) * | 2008-12-31 | 2012-09-19 | 宝山钢铁股份有限公司 | Method for manufacturing oriented silicon steel with one-step cold rolling method |
| CN102102141B (en) * | 2009-12-22 | 2013-12-11 | 鞍钢股份有限公司 | Hot rolling process for improving texture uniformity of oriented silicon steel plate |
| CN103882203A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Hot rolling method for improving electromagnetic performance of silicon steel |
| CN106435356A (en) * | 2016-09-13 | 2017-02-22 | 北京首钢股份有限公司 | Method for producing non-oriented band steel for stamping |
| CN106435356B (en) * | 2016-09-13 | 2019-06-04 | 北京首钢股份有限公司 | A method of producing punching press No yield point strip |
| CN114769544A (en) * | 2020-11-25 | 2022-07-22 | 宝钢德盛不锈钢有限公司 | Production method for reducing mountain scale at edge of hot-rolled 200-series stainless steel coil |
| CN114769544B (en) * | 2020-11-25 | 2024-03-01 | 宝钢德盛不锈钢有限公司 | Production method for reducing mountain scales at hot rolled edge of 200 series stainless steel |
| CN113083896A (en) * | 2021-02-20 | 2021-07-09 | 张家港宏昌钢板有限公司 | Process for controlling burr-like thickness fluctuation of silicon steel and silicon steel sheet product prepared by same |
| CN113083896B (en) * | 2021-02-20 | 2022-06-14 | 张家港宏昌钢板有限公司 | Process for controlling burr-like thickness fluctuation of silicon steel and silicon steel sheet product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1743127A (en) | Method for producing oriented silicon steel band by continuous casting and rolling of thin plate slab | |
| CN1743128A (en) | Method for producing oriented silicon steel band by direct rolling of continuous cast plate slab | |
| CN101768697B (en) | Method for manufacturing oriented silicon steel with one-step cold rolling method | |
| CN102041367B (en) | Manufacturing method of thin strip continuously cast and cold rolled non-oriented electrical steel | |
| CN100381598C (en) | Orientating silicon steel, manufacturing process and equipment | |
| CN102199721B (en) | Manufacture method of high-silicon non-oriented cold-rolled sheet | |
| CN113684422B (en) | Non-oriented silicon steel and production method thereof | |
| US20130199675A1 (en) | Manufacture method of high-efficiency non-oriented silicon steel with excellent magnetic performance | |
| CN1948517A (en) | Manufacturing method of cold rolling electric steel special for compressor | |
| CN109112423B (en) | Super-thick alloy steel plate with excellent low-temperature toughness and preparation method thereof | |
| CN102925793B (en) | Non-oriented electrical steel with magnetic induction greater than or equal to 1.8 T and production method thereof | |
| CN103805918B (en) | A kind of high magnetic induction grain-oriented silicon steel and production method thereof | |
| CN103468907B (en) | Method for producing cold-rolled non-oriented electrical steel based on ASP (AnGang Strip Production) medium thin slab continuous casting and rolling process | |
| CN101545072A (en) | Method for producing oriented silicon steel having high electromagnetic performance | |
| CN105925884A (en) | High-magnetic-induction low-iron-loss no-oriented silicon steel sheet and manufacturing method thereof | |
| CN111575594B (en) | Non-oriented electrical steel under low magnetic field and production method thereof | |
| CN107164690A (en) | The method that one kind prepares the flourishing texture non-orientation silicon steel thin belt in { 100 } face based on thin strap continuous casting | |
| CN103305748A (en) | Non-oriented electrical steel plate and manufacturing method thereof | |
| CN1796015A (en) | Method for manufacturing cold rolling non oriented electrical steel through continuous casting and tandem rolling sheet bar | |
| CN1481444A (en) | Process for prodn. of grain oriented electrical steel strips | |
| CN105132808B (en) | Method for preparing compound element processed non-oriented silicon steel for high-efficiency motor | |
| CN110777299A (en) | Ce-containing high-magnetic-induction non-oriented silicon steel and preparation method thereof | |
| CN113755750B (en) | Production method of phosphorus-containing high-magnetic-induction non-oriented silicon steel | |
| CN1888111A (en) | Non-orientation electrical steel and its making process | |
| CN1199748C (en) | Method for production of non-oriented electrical steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |