CN101209459A - Method for cold rolling high silicon electric steel - Google Patents
Method for cold rolling high silicon electric steel Download PDFInfo
- Publication number
- CN101209459A CN101209459A CN 200610155842 CN200610155842A CN101209459A CN 101209459 A CN101209459 A CN 101209459A CN 200610155842 CN200610155842 CN 200610155842 CN 200610155842 A CN200610155842 A CN 200610155842A CN 101209459 A CN101209459 A CN 101209459A
- Authority
- CN
- China
- Prior art keywords
- rolling
- steel
- silicon
- electrical steel
- cold rolling
- 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
- Metal Rolling (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
The invention provides a cold rolling method for high-silicon electrical steel. The method comprises conventional processes of a first cold rolling for a hot rolled plate after being treated with acid washing or a second cold rolling with annealing during operation, decarbonization annealing and recrystallization annealing, etc., and is characterized in that the hot rolled plate before being treated with acid washing is done with welding end to end and then continuous endless rolling is done by a mill with multi-stands; a warm rolling is realized by that mechanical energy is transformed into heat energy during the rolling and the temperature of the steel plate raises; the tension among each mill stand is 100-300 N/mm <2> and 30-80 N/mm<2> for the last mill stand; the draft is 15-30 percent and 5-15 percent for the last mill stand and the outlet speed of the rolling mill is no less than 500m/min and the thickness of the finished product is 0.2-0.8mm. By adopting a plurality of mill stands to realize the warm rolling, the invention effectively solves the breakage occurred in edges; the last mill stand is served as the pass mill stand of finished products so as to guarantee the quality of the surface of the steel strip; large tension is adopted during the rolling so as to ensure that a forward slipping area can be reduced and deformation bands are increased. Compared with the method by a single mill stand, the method of the invention prolongs the cycle of roll changing, reduces the labor intensity, shortens the production cycle and improves productivity and quality of steel plates. In addition, the method of welding from head to tail for transition with low-silicon steel can effectively solve the problem of breakage during the welding of the high-silicon electrical steel.
Description
Technical field
The invention belongs to steel rolling technology, relate in particular to the cold rolling process of high-silicon electrical steel
Background technology
Cold rolling electric all was that single chassis employing once cold rolling method or the secondary cold-rolling method that has intermediate annealing are produced in the past, and in order to guarantee the surface quality of finished product, the final pass of cold-rolled products must adopt new roller to finish, so roller replacing operation is frequent.In addition, owing to be that single chassis is back and forth rolling, not only increased the cutting head cutting tail amount, lumber recovery is low, also needs often to improve and reduce mill speed, and mill speed is low also to be the principal element that restriction output increases.Particularly si content because resistance of deformation is big, all adopts 20 roller mills cold rolling greater than 2% high-silicon electrical steel usually, and adopts low speed rolling.And, split in order to prevent the limit, also need to increase firing equipment and before cold rolling, high hot rolled silicon steel plates is preheating to 100～150 ℃.Si content also had less than 2% low silicon electric steel adopt rolling production.But adopt method for tandem rolling to produce high-silicon electrical steel, along with the increase of silicone content, the limit is split and is just more shown serious, and the welding broken belt is also more frequent.
Summary of the invention
The objective of the invention is to improve output and lumber recovery, can overcome the limit again and split and solve a welding difficult problem, a kind of method that adopts multimachine frame continuous cold rolling method to produce high-silicon electrical steel is provided.
The cold rolling process of high-silicon electrical steel of the present invention is achieved in that the hot rolled plate after this method is to pickling carries out once cold rolling or has the conventional operation such as secondary cold-rolling, decarburizing annealing, recrystallization annealing of intermediate annealing, it is characterized in that the hot rolled plate before the pickling is welded end to end, adopt the continuous endless rolling of multi-set of rolling mill, utilize in the operation of rolling mechanical energy to transfer heat energy to and steel billet temperature is raise realize warm-rolling, the tension force between each frame is 100～300N/mm
2, last platform frame is 30～80N/mm
2Reduction ratio is 15%～30%, and last platform frame is 5%～15%; Muzzle velocity 〉=the 500m/min of milling train, finished product thickness are 0.2～0.8mm.
The welding method of low-silicon steel transition is adopted in the described welding end to end of high-silicon electrical steel cold rolling process of the present invention, adds one section low-silicon steel at high-silicon electrical steel between end to end, with laser welder line feeding welding.
The chemical composition of high-silicon electrical steel of the present invention is (percentage by weight) C:0.002%～0.08%, Si:2.0%～4.0%, Mn:0.01%～1.5%, P≤0.2%, S≤0.04%, N≤0.005%, Als≤0.03%, Cu≤0.04%, B≤0.005%, all the other are mainly iron and a small amount of field trash, are mingled with total amount≤0.03%.
The present invention adopts multimachine frame tandem mills cold-rolling practice production once or twice high-silicon electrical steel (adopting part decarburizing annealing to handle between twice cold-rolling practice), adopt special rolling mill practice, utilize silicon steel distortion difficulty, emit more heat in the operation of rolling, make temperature of steel strips rising (can reach 50～150 ℃) realize warm-rolling.Under the situation that does not increase equipment investment, efficiently solve the limit and split and the difficult problem of high silicon steel welding.The present invention will be not the platform frame as the final pass frame, thereby guaranteed the surface quality of steel band.The employing hightension is rolling, can reduce the zone of slippage on the delivery side, and deformation band is increased.Compare with single chassis,, prolonged the roll change cycle, not only reduced labour intensity, shortened the production cycle, also improved productivity ratio, and stable rolling rhythm also helps raising template quality owing to cancelled the cutting head cutting tail operation.Adopt the welding method of low-silicon steel transition to solve the problem that high-silicon electrical steel welds broken belt.
The specific embodiment
Embodiment 1
It is example that the present invention adopts the five frame connection rolling machine group to produce nothing orientation high-silicon electrical steel in the once cold rolling mode.This chemical composition of not having the orientation high-silicon electrical steel is (percentage by weight) C:0.003%, Si:3.0%, Mn:0.25%, P≤0.01%, S≤0.005%, Als:0.24%, Cu:0.040%, all the other are mainly iron and a small amount of field trash, are mingled with total amount≤0.03%.
The hot rolling of steel billet of mentioned component is become the hot rolled plate of 2.3mm, adding a bit of silicone content between end to end at high-silicon electrical steel is 1.2% equal specification steel plate, adopt laser welder line feeding welding, make that high-silicon electrical steel is from beginning to end to be connect, carry out pickling again, adopt the cold rolling unit of five frames then with once cold rolling mode continuous rolling.Utilize in the operation of rolling mechanical energy to transfer heat energy to steel billet temperature is increased near 150 ℃, realize warm-rolling.The finished product thickness of product is 0.5mm.Concrete rolling parameter between each frame sees Table 1.Cold rolling after decarburizing annealing, recrystallization annealing, coating just obtain the boundless nothing orientation high-silicon electrical steel that splits.The effect contrast rolling with single-stand cold-rolling machine sees Table 2.
Table 1 five frame once cold rolling methods are produced the rolling mill practice that does not have the orientation high-silicon electrical steel
| Passage | Roll-force MN | Tension force N/mm 2 | Speed m/min | Reduction ratio % | Bending roller force % |
| Inlet | 170 | 260 | |||
| 1 | 10 | 240 | 328 | 20 | 80 |
| 2 | 11 | 190 | 440 | 26 | 80 |
| 3 | 10 | 160 | 560 | 21 | 70 |
| 4 | 10 | 140 | 680 | 18 | 60 |
| 5 | 7 | 50 | 760 | 10 | 12 |
The comparison that table 2 continuous rolling and single chassis are rolling
| Lumber recovery % | Laterally with plate difference μ m | Annual production ten thousand t | The roll change cycle | |
| Continuous rolling | 98 | 15 | 100 | ＞60 volumes |
| Single chassis is rolling | 92 | 20 | 15×5＝75 | 1 volume |
Embodiment 2
It is example that the present invention adopts the five frame connection rolling machine group to produce the orientation high-silicon electrical steel in twice cold rolling mode.The chemical composition of this orientation high-silicon electrical steel is (percentage by weight) C:0.04%, Si:3.22%, Mn:0.08%, P≤0.012%, S:0.03%, Als:0.34%, Cu:0.20%, all the other are mainly iron and a small amount of field trash, are mingled with total amount≤0.025%.
The hot rolling of steel billet of mentioned component is become the hot rolled plate of 2.5mm, adding a bit of silicone content between end to end at high-silicon electrical steel is 1.1% equal specification steel plate, adopt laser welder line feeding welding, make that high-silicon electrical steel is from beginning to end to be connect, carry out pickling again, adopt the cold rolling unit of five frames then with twice cold rolling mode continuous rolling.Utilize in the operation of rolling mechanical energy to transfer heat energy to steel billet temperature is increased near 150 ℃, realize warm-rolling.Adopt part decarburizing annealing to handle at twice between cold rolling, the finished product thickness of product is 0.3mm.Concrete rolling parameter in twice cold-rolled process between each frame sees Table 3.Cold rolling after decarburizing annealing, recrystallization annealing, be coated with operations such as MgO, high annealing and make the orientation high-silicon electrical steel, finished product is boundless to be split.The effect contrast rolling with single-stand cold-rolling machine sees Table 4.
Twice cold-rolling practice of table 3 five frames produced the rolling mill practice of orientation high-silicon electrical steel
The comparison that table 4 continuous rolling and single chassis are rolling
| Lumber recovery % | Laterally with plate difference μ m | Annual production ten thousand t | The roll change cycle | |
| Continuous rolling | 98 | 15 | 95 | ＞50 volumes |
| Single chassis is rolling | 92 | 20 | 15×5＝75 | 1 volume |
Claims (3)
1. the cold rolling process of a high-silicon electrical steel, comprise the hot rolled plate after the pickling is carried out once cold rolling or has the conventional operation such as secondary cold-rolling, decarburizing annealing, recrystallization annealing of intermediate annealing, it is characterized in that the hot rolled plate before the pickling is welded end to end, adopt the continuous endless rolling of multi-set of rolling mill, utilize in the operation of rolling mechanical energy to transfer heat energy to and steel billet temperature is raise realize warm-rolling, the tension force between each frame is 100～300N/mm
2, last platform frame is 30～80N/mm
2Reduction ratio is 15%～30%, and last platform frame is 5%～15%; Muzzle velocity 〉=the 500m/min of milling train, finished product thickness are 0.2～0.8mm.
2. the cold rolling process of high-silicon electrical steel according to claim 1 is characterized in that described welding end to end adopts the welding method of low-silicon steel transition, adds one section low-silicon steel at high-silicon electrical steel between end to end, with laser welder line feeding welding.
3. the cold rolling process of high-silicon electrical steel according to claim 1 and 2, the chemical composition that it is characterized in that described high-silicon electrical steel is (percentage by weight) C:0.002%～0.08%, Si:2.0%～4.0%, Mn:0.01%～1.5%, P≤0.2%, S≤0.04%, N≤0.005%, Als≤0.03%, Cu≤0.04%, B≤0.005%, all the other are mainly iron and a small amount of field trash, are mingled with total amount≤0.03%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610155842 CN101209459A (en) | 2006-12-27 | 2006-12-27 | Method for cold rolling high silicon electric steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610155842 CN101209459A (en) | 2006-12-27 | 2006-12-27 | Method for cold rolling high silicon electric steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101209459A true CN101209459A (en) | 2008-07-02 |
Family
ID=39609813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610155842 Pending CN101209459A (en) | 2006-12-27 | 2006-12-27 | Method for cold rolling high silicon electric steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101209459A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553934A (en) * | 2010-12-15 | 2012-07-11 | 鞍钢股份有限公司 | Control method for forward slipping coefficient of hot rolled silicon steel |
| CN101992210B (en) * | 2009-08-25 | 2013-03-13 | 鞍钢股份有限公司 | Method for producing aluminum-free steel grade of cold milling non-oriented silicon steel |
| CN103725995A (en) * | 2013-12-27 | 2014-04-16 | 东北大学 | Preparation method of oriented high silicon electrical steel |
| CN104014588A (en) * | 2013-02-28 | 2014-09-03 | 宝钢不锈钢有限公司 | Method for producing ferrite stainless steel cold-rolled strip steel |
| CN104399749A (en) * | 2014-10-28 | 2015-03-11 | 武汉钢铁(集团)公司 | Cold rolling method capable of preventing edge crack and brittle fracture of silicon steel with Si content more than or equal to 3.5 percent |
| CN104439738A (en) * | 2014-11-07 | 2015-03-25 | 武汉钢铁(集团)公司 | Method for welding oriented silicon steel through Taylor welder and enabling weld joint to smoothly pass through rolling mill |
| CN106041305A (en) * | 2016-07-05 | 2016-10-26 | 北京科技大学 | Laser welding method of high silicon steel |
| CN107217129A (en) * | 2011-12-20 | 2017-09-29 | Posco公司 | High silicon steel plate and its production method with excellent machining property and magnetic property |
| CN108546814A (en) * | 2018-04-11 | 2018-09-18 | 北京科技大学 | A method of high magnetic induction grain-oriented silicon steel is produced based on ESP Endless Rolling Technologies |
| CN109371211A (en) * | 2018-10-10 | 2019-02-22 | 首钢京唐钢铁联合有限责任公司 | Steel band production method |
| CN113145646A (en) * | 2021-04-23 | 2021-07-23 | 无锡普天铁心股份有限公司 | Process for improving edge cracking of silicon steel edge |
| CN113198866A (en) * | 2021-05-07 | 2021-08-03 | 新余钢铁股份有限公司 | Thin-gauge middle-high-grade non-oriented silicon steel acid rolling production process |
-
2006
- 2006-12-27 CN CN 200610155842 patent/CN101209459A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992210B (en) * | 2009-08-25 | 2013-03-13 | 鞍钢股份有限公司 | Method for producing aluminum-free steel grade of cold milling non-oriented silicon steel |
| CN102553934B (en) * | 2010-12-15 | 2014-03-12 | 鞍钢股份有限公司 | Control method for forward slipping coefficient of hot rolled silicon steel |
| CN102553934A (en) * | 2010-12-15 | 2012-07-11 | 鞍钢股份有限公司 | Control method for forward slipping coefficient of hot rolled silicon steel |
| CN107217129A (en) * | 2011-12-20 | 2017-09-29 | Posco公司 | High silicon steel plate and its production method with excellent machining property and magnetic property |
| CN104014588A (en) * | 2013-02-28 | 2014-09-03 | 宝钢不锈钢有限公司 | Method for producing ferrite stainless steel cold-rolled strip steel |
| CN103725995B (en) * | 2013-12-27 | 2016-01-20 | 东北大学 | A kind of preparation method of orientation high-silicon electrical steel |
| CN103725995A (en) * | 2013-12-27 | 2014-04-16 | 东北大学 | Preparation method of oriented high silicon electrical steel |
| CN104399749B (en) * | 2014-10-28 | 2016-06-22 | 武汉钢铁(集团)公司 | A kind of can prevent Si >=3.5% silicon steel limit from splitting and the cold rolling process of brittle failure |
| CN104399749A (en) * | 2014-10-28 | 2015-03-11 | 武汉钢铁(集团)公司 | Cold rolling method capable of preventing edge crack and brittle fracture of silicon steel with Si content more than or equal to 3.5 percent |
| CN104439738A (en) * | 2014-11-07 | 2015-03-25 | 武汉钢铁(集团)公司 | Method for welding oriented silicon steel through Taylor welder and enabling weld joint to smoothly pass through rolling mill |
| CN106041305A (en) * | 2016-07-05 | 2016-10-26 | 北京科技大学 | Laser welding method of high silicon steel |
| CN108546814A (en) * | 2018-04-11 | 2018-09-18 | 北京科技大学 | A method of high magnetic induction grain-oriented silicon steel is produced based on ESP Endless Rolling Technologies |
| CN108546814B (en) * | 2018-04-11 | 2020-05-12 | 北京科技大学 | Method for producing high-magnetic-induction oriented silicon steel based on ESP (electronic stability program) endless rolling technology |
| CN109371211A (en) * | 2018-10-10 | 2019-02-22 | 首钢京唐钢铁联合有限责任公司 | Steel band production method |
| CN109371211B (en) * | 2018-10-10 | 2020-11-20 | 首钢京唐钢铁联合有限责任公司 | Steel strip manufacturing method |
| CN113145646A (en) * | 2021-04-23 | 2021-07-23 | 无锡普天铁心股份有限公司 | Process for improving edge cracking of silicon steel edge |
| CN113145646B (en) * | 2021-04-23 | 2021-12-10 | 无锡普天铁心股份有限公司 | Process for improving edge cracking of silicon steel edge |
| CN113198866A (en) * | 2021-05-07 | 2021-08-03 | 新余钢铁股份有限公司 | Thin-gauge middle-high-grade non-oriented silicon steel acid rolling production process |
| CN113198866B (en) * | 2021-05-07 | 2023-03-17 | 新余钢铁股份有限公司 | Thin-gauge middle-high-grade non-oriented silicon steel acid rolling production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101209459A (en) | Method for cold rolling high silicon electric steel | |
| CN101670372B (en) | Method for eliminating defect of strip shape of hot-rolled high-strength steel | |
| CN100443201C (en) | Surface iron scale control method for middle sheet billet continuous casting and rolling steel plate | |
| CN100500914C (en) | Method for rolling thick specification low-alloy structure steel plate by using middle and thin plate blank | |
| WO2019109400A1 (en) | Continuous production system and method for stainless steel cold-rolled sheet | |
| CN109266815B (en) | Shape control method for online quenching high-strength steel plate | |
| CN110116135B (en) | Endless rolling production method for rod and wire products | |
| CN207026109U (en) | A kind of white skin rolling annealing and pickling unit in new type stainless steel. corrosion resistance arrowband | |
| CN108906888A (en) | Stainless-steel cold-rolling strip production equipment | |
| CN101008043A (en) | Process for producing ferritic stainless steel | |
| CN101844162A (en) | Method for removing residual stress of hot-rolling high-strength steel | |
| CN104399745B (en) | A kind of steekle mill production line configuring roughing mill and method of work thereof | |
| CN101767106B (en) | Hot rolling process of stainless plate strip coil | |
| CN112916616B (en) | Process for rolling sheet billet checkered plate by common hot-rolled strip steel production line | |
| CN103722011A (en) | Novel stainless steel cold continuous rolling technology and unit thereof | |
| CN106636747A (en) | Manufacturing method for producing commercial pure titanium plate by adopting double annealing of heavy and medium plate mill | |
| CN102716906A (en) | Method for producing iron nickel strip for high plate-shaped integrated circuit (IC) lead frame | |
| CN114433638B (en) | Method for controlling transverse unevenness of hot-rolled steel plate with thickness specification of less than or equal to 50mm | |
| CN103028602A (en) | Method for rolling magnesium alloy sheet strip | |
| CN104399748B (en) | A kind of production technology that can replace conventional broadband steel hot continuous rolling | |
| CN111570509B (en) | Titanium strip rolling method for hot continuous rolling strip steel production line | |
| CN203678835U (en) | Novel stainless steel cold continuous rolling technology and unit thereof | |
| CN204058549U (en) | A kind of hot rolled strip annealing furnace by-pass collar | |
| CN203648986U (en) | Device for producing reinforcing steel bars through heating-free low-temperature direct rolling of billets | |
| CN103572037A (en) | Steel hot-rolled coil plate collinear heat treatment production line and production technique thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080702 |