CN110328235A - A method of the high silicon steel cold rolling under magnetic field - Google Patents

A method of the high silicon steel cold rolling under magnetic field Download PDF

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Publication number
CN110328235A
CN110328235A CN201910634297.XA CN201910634297A CN110328235A CN 110328235 A CN110328235 A CN 110328235A CN 201910634297 A CN201910634297 A CN 201910634297A CN 110328235 A CN110328235 A CN 110328235A
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CN
China
Prior art keywords
silicon steel
magnet
magnetic field
rolling
milling train
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Pending
Application number
CN201910634297.XA
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Chinese (zh)
Inventor
任忠鸣
王均安
王江
陈超越
张园锋
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Priority to CN201910634297.XA priority Critical patent/CN110328235A/en
Publication of CN110328235A publication Critical patent/CN110328235A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B13/00Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B3/00Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B2001/221Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

A kind of method that the present invention discloses silicon steel cold rolling high under magnetic field, it is related to cold rolled sheet rolling field, the following steps are included: the preparation of (1) high silicon steel raw material: pure iron and pure silicon are uniformly mixed, high melt, which is carried out, using high vacuum high temperature obtains high silicon steel, polishing scale removal obtains initial blank, forms rolling sample;(2) multiple magnet and two brackets for installing magnet are prepared;(3) connection between magnet, bracket and milling train: magnet is fixed on bracket, is secured the stand in the rack of milling train later, and two brackets is made to be set to the roller gap two sides of milling train;(4) it rolls the conveying of sample: using stainless steel substrates by the roll gap for rolling sample push-in milling train, being rolled.The method of silicon steel cold rolling high under magnetic field provided by the invention, it is easy to operate, the rolling performance of high silicon steel can be improved, and not can cause environmental pollution.

Description

A method of the high silicon steel cold rolling under magnetic field
Technical field
The present invention relates to cold rolled sheets to roll field, more particularly to a kind of method of silicon steel cold rolling high under magnetic field.
Background technique
Silicon steel is also known as electrical sheet, is a kind of very low (general < 0.02%) the iron silicon magnetically soft alloy of phosphorus content, is electric power and telecommunication Industry is used to manufacture the important raw material of generator, motor, transformer, mutual inductor, relay and other electrical instrumentations, and A kind of maximum soft magnetic materials of usage amount, accounts for about 90% or more magnetic material.Silicon steel can be divided into Cold rolling motor nothing according to purposes Orientation silicon steel, cold rolling transformer orientation silicon steel etc.;According to silicone content difference, can be divided into: silicone content is common lower than 3.3wt%'s Silicon steel;Silicone content is the high silicon steel of 4.5wt%-6.7wt%.
General high silicon steel silicone content is 6.5wt%, and with the raising of silicone content, resistivity rises, eddy-current loss decline. When silicone content reaches 6.5wt%, soft magnet performance is best, and it is different to be mainly reflected in high resistivity, high magnetic permeability, low magnetocrystalline Property and close to zero magnetostriction coefficient, (magnetostriction, which is ferromagnetic material, to be occurred elongation in magnetization or reduces, it is The main reason for causing transformer noise).Since the raising of silicone content causes solid solution strengthening effect obvious.Further, since B2 (FeSi) and DO3 (Fe3) etc. Si the appearance of ordered phases causes alloy to become not only hard but also crisp, and machining property sharply deteriorates, So the production work sesame for being difficult to adopt common silicon steel manufactures high silicon steel.
Since high silicon steel cold plasticity is poor, so needing to prepare high silicon steel thin belt by particular form, fast quenching is such as used It is prepared by the modes such as method, chemical vapor deposition (CVD), electro beam physics vapour deposition (EP-PVD).Initial people use fast quenching skill Art prepares high silicon steel thin belt, makes crystal grain refinement using the rapid solidification process of roll, by subsequent stress relieving by annealing, obtains share Higher (100) plane texture and good magnetic property.Due to coagulating in technique preparation process fastly, template is difficult to control, and plate thickness is uneven Even and plate width is difficult to reach use condition, and more demanding to the condition of annealing process, not extensive raw for reasons of cost It produces.
In addition, laboratory utilizes chemical vapor deposition (CVD), using 3% or so silicon steel as raw material, in high temperature protection gas Magnetic property and the excellent strip of processing performance are prepared in the diffusion that element silicon is utilized under atmosphere.But chemical vapour deposition technique exists Environmental pollution, the disadvantages of equipment maintenance cost is high.Similar therewith, people are by electro beam physics vapour deposition (EP-PVD), i.e., Target material surface is bombarded by high-velocity electrons, evaporate target and condenses in substrate surface formation material requested, can be prepared tens of micro- The shortcomings that rice arrives the strip of hundreds of microns, but equally exists equipment valuableness, complex process.
Cold rolling has many advantages, such as that deformation is uniform, finished surface is superior in quality, rhythm of production is compact, meets enterprise and gives birth on a large scale The needs of production are one of the processing methods of mainstream in present plate forming.What magnetic field can promote material Dislocations significantly can Dynamic property, moves it under the action of smaller stress, promotes the plastic deformation ability of material, improve its processing performance.It is how sharp It is also one of the hot spot of current laboratory research with the processing performance that magnetic field improves high silicon steel.Therefore, for by applying magnetic field The surface quality for improving silicon steel mill product, the method for devising high silicon steel cold rolling under a kind of magnetic field.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of method of silicon steel cold rolling high under magnetic field, easy to operate, energy Enough improve the rolling performance of high silicon steel, and not can cause environmental pollution.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of method of silicon steel cold rolling high under magnetic field, comprising the following steps:
(1) preparation of high silicon steel raw material: pure iron and pure silicon are uniformly mixed, and carry out high temperature using high vacuum high temperature Melting obtains high silicon steel, and polishing scale removal obtains initial blank, forms rolling sample;
(2) multiple magnet and two brackets for installing the magnet are prepared;
(3) connection between the magnet, the bracket and the milling train: the magnet is fixed on the bracket, The bracket is fixed on later in the rack of the milling train, and two brackets is made to be set to the roller of the milling train Stitch two sides;
(4) the rolling sample: being pushed into the roll gap of the milling train by the conveying of the rolling sample using stainless steel substrates, It is rolled.
Preferably, in step (1), silicone content is 6.8wt%-7.5wt% in the mixed-powder of pure iron and pure silicon, melting Temperature be 1500 DEG C -1650 DEG C, it is described rolling sample width be 0.01mm-50mm, it is described rolling sample with a thickness of 1mm- 200mm。
Preferably, in step (2), four magnet are prepared using wire cutting, the side of the magnet is the arc of indent Face.
Preferably, in step (2), the magnet generates the magnetic field for the homogeneous constant that magnetic induction intensity is 0.01T-10T.
Preferably, in step (2), the bracket is prepared using diamagnetism or weak magnetic material, and the bracket includes Bottom plate is respectively arranged with first side plate at left and right sides of the bottom plate, and the two sides up and down of the bottom plate are respectively arranged with one A second side plate, the bottom plate middle part are provided with a strip-shaped hole, and the strip-shaped hole is arranged in parallel with second side plate.
Preferably, in step (3), there are two the magnet, two magnet are symmetrical for the upper installation of a bottom plate It is set to the two sides of the strip-shaped hole, the cambered surface of the indent of the magnet matches and corresponding with a roll.
Preferably, in step (3), the bracket makes the strip-shaped hole and the milling train when being installed on the milling train Roll-gap position is corresponding.
Preferably, in step (4), the mill speed of the milling train is 0.1m/s -2m/s.
The present invention achieves following technical effect compared with the existing technology:
The method of silicon steel cold rolling high under magnetic field provided by the invention, is fixed on rolling mill roll two for magnet using bracket Side successfully realizes the operation of rolling under magnetic field, plays the role of improvement to the rolling performance of high silicon steel, increases high silicon steel Deformation limit, reduce the crackle that generates and internal stress in the operation of rolling, obtain the preferably close high silicon steel thin belt of finish to gauge of quality.? When rolling under magnetic field, due to the effect of magnetic anisotropy and induced anisotropy, tissue can control by adjusting magnetic field strength Orientation improves magnetic property.This method can carry out extensive continuous rolling, be expected to produce the high silicon steel of big, the long size of width Band reduces the production difficulty of high silicon steel, and there's almost no pollution in process of production.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.
Fig. 1 is the installation main view of the bracket in the present invention with magnet;
Fig. 2 is the installation left view of the bracket in the present invention with magnet;
Fig. 3 is the main view of magnet in the present invention;
Fig. 4 is the top view of magnet in the present invention;
Fig. 5 is the main view of bracket in the present invention;
Fig. 6 is the top view of bracket in the present invention;
Fig. 7 is the left view of bracket in the present invention.
Description of symbols: 1, roll;2, magnet;3, bracket;31, bottom plate;32, the first side plate;33, the second side plate;34, Strip-shaped hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The method for high silicon steel cold rolling that the object of the present invention is to provide a kind of under magnetic field, it is easy to operate, it can be realized improvement The rolling performance of high silicon steel, and not can cause environmental pollution.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
As shown in figs. 1-7, the method for high silicon steel cold rolling that the present embodiment provides a kind of under magnetic field, comprising the following steps:
(1) preparation of high silicon steel raw material: pure iron and pure silicon are uniformly mixed, and carry out high temperature using high vacuum high temperature Melting obtains high silicon steel, and polishing scale removal obtains initial blank, forms rolling sample;
(2) multiple magnet 2 and two brackets 3 for installing magnet 2 are prepared;
(3) connection between magnet 2, bracket 3 and milling train: magnet 2 is fixed on bracket 3, is later fixed on bracket 3 In the rack of milling train, and two brackets 3 is made to be set to 1 two sides of roll of milling train;
(4) it rolls the conveying of sample: using stainless steel substrates by the roll gap for rolling sample push-in milling train, being rolled.
Magnet 2 is fixed on 1 both sides of rolling mill roll using bracket 3 in the present embodiment, generates the magnetic field of equalization stable, success Ground realizes the operation of rolling under magnetic field, and required strategic point roll-force in the operation of rolling can be effectively reduced, improve material Plastic deformation ability plays the role of improvement to the rolling performance of high silicon steel, increases the deformation limit of high silicon steel, reduces rolling road It is secondary, Reducing distortion drag, and then relatively thin high silicon steel finished product is obtained, the crackle generated in the operation of rolling and internal stress are reduced, is obtained To the preferably close high silicon steel thin belt of finish to gauge of quality.When being rolled under magnetic field, due to the work of magnetic anisotropy and induced anisotropy With can control tissue orientating by adjusting magnetic field strength, improve magnetic property.This method can carry out extensive continuous rolling, It is expected to produce the high silicon strip of big, the long size of width, reduces the production difficulty of high silicon steel, and hardly deposit in process of production It is polluting.
Specifically, in step (1), silicone content is 6.8wt%-7.5wt% in the mixed-powder of pure iron and pure silicon, melting Temperature be 1500 DEG C -1650 DEG C, roll sample width be 0.01mm-50mm, roll sample with a thickness of 1mm-200mm, roll The length of sample processed is unlimited.
Specifically, in step (2), four magnet 2 is prepared using wire cutting, are magnetized using Tesla coil, magnet 2 Size can according to rolling sample width be designed so that rolling sample width without departing from magnetic field boundary.Such as Fig. 3-4 Shown, the side of magnet 2 is the cambered surface of indent, and specifically, the radius of circular arc is determined according to 1 radius of roll, r1For arc radius, r2For 1 radius of roll, physical relationship: r1=r2+5mm。
In this specific embodiment, the length range of magnet 2 is 20mm-200mm, width range 10mm-100mm, thickness Range is 12mm-200mm.Magnet 2 generates the magnetic field for the homogeneous constant that magnetic induction intensity is 0.01T-10T, specifically, magnet 2 For permanent magnet, electromagnet, Bitter magnet or hybrid magnet.
Specifically, in step (2), bracket 3 is prepared using diamagnetism or weak magnetic material, and specifically, bracket 3 uses The materials such as stainless steel, copper or aluminium are made so that bracket 3 have the characteristics that it is non-magnetic, can to avoid by magnet 2 magnetize so that influence Distribution of Magnetic Field.As illustrated in figs. 5-7, bracket 3 includes bottom plate 31, and the left and right sides of bottom plate 31 is respectively arranged with first side plate 32, the two sides up and down of bottom plate 31 are respectively arranged with second side plate 33, and the first side plate 32 and the second side plate 33 are located at bottom plate 31 The same side, be provided with a strip-shaped hole 34 in the middle part of bottom plate 31, strip-shaped hole 34 is arranged in parallel with the second side plate 33.Specifically, sharp Stainless steel is processed into bracket 3 with Wire EDM.
Specifically, in step (3), there are two magnet 2, two magnet 2 and the first side plates 32 for the upper installation of a bottom plate 31 It is located at the same side with the second side plate 33, two magnet 2 are symmetrically disposed on the two sides of strip-shaped hole 34, specifically, by screw by magnetic Iron 2 is fixed on bottom plate 31, and the cambered surface of the indent of a magnet 2 matches and corresponding with a roll 1.
Specifically, in step (3), bracket 3 makes strip-shaped hole 34 opposite with the Roll-gap position of milling train when being installed on milling train It answers, the distance between regulating magnet 2 and roll 1 arrive suitable position, and bracket 3 is fixed in the rack of milling train using screw, is made Used time will roll sample and be extended in the roll gap of milling train by strip-shaped hole 34.It is adjustable before and after having up and down due to the bracket 3 Feature guarantees that magnet 2 will not be adsorbed on roll 1, and should using the distance between the adjustable magnet 2 of bracket 3 and roll 1 Bracket 3 is connected directly between on milling train, so having the characteristics that safety.
In this specific embodiment, in step (4), the mill speed of milling train is 0.1m/s -2m/s.
Apply that a specific example illustrates the principle and implementation of the invention in this specification, above embodiments Explanation be merely used to help understand method and its core concept of the invention;At the same time, for those skilled in the art, According to the thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion in this specification Appearance should not be construed as limiting the invention.

Claims (8)

1. a kind of method of silicon steel cold rolling high under magnetic field, which comprises the following steps:
(1) preparation of high silicon steel raw material: pure iron and pure silicon are uniformly mixed, and carry out high melt using high vacuum high temperature High silicon steel is obtained, polishing scale removal obtains initial blank, forms rolling sample;
(2) multiple magnet and two brackets for installing the magnet are prepared;
(3) connection between the magnet, the bracket and the milling train: the magnet is fixed on the bracket, later The bracket is fixed in the rack of the milling train, and two brackets is made to be set to the roller gap two of the milling train Side;
(4) conveying of the rolling sample: the rolling sample is pushed into the roll gap of the milling train using stainless steel substrates, is carried out Rolling.
2. the method for silicon steel cold rolling high under magnetic field according to claim 1, which is characterized in that in step (1), pure iron and Silicone content is 6.8wt%-7.5wt% in the mixed-powder of pure silicon, and the temperature of melting is 1500 DEG C -1650 DEG C, the rolling examination The width of sample be 0.01mm-50mm, it is described rolling sample with a thickness of 1mm-200mm.
3. the method for silicon steel cold rolling high under magnetic field according to claim 1, which is characterized in that in step (2), utilize line Cutting four magnet of preparation, the side of the magnet are the cambered surface of indent.
4. the method for silicon steel cold rolling high under magnetic field according to claim 3, which is characterized in that in step (2), the magnetic Iron generates the magnetic field for the homogeneous constant that magnetic induction intensity is 0.01T-10T.
5. the method for silicon steel cold rolling high under magnetic field according to claim 3, which is characterized in that in step (2), the branch Frame is prepared using diamagnetism or weak magnetic material, and the bracket includes bottom plate, is respectively set at left and right sides of the bottom plate There is first side plate, the two sides up and down of the bottom plate are respectively arranged with second side plate, are provided with one in the middle part of the bottom plate A strip-shaped hole, the strip-shaped hole are arranged in parallel with second side plate.
6. the method for silicon steel cold rolling high under magnetic field according to claim 5, which is characterized in that in step (3), an institute Stating the upper installation of bottom plate, there are two the magnet, and two magnet are symmetrically disposed on the two sides of the strip-shaped hole, described in one The cambered surface of the indent of magnet matches and corresponding with a roll.
7. the method for silicon steel cold rolling high under magnetic field according to claim 6, which is characterized in that in step (3), the branch Frame makes the strip-shaped hole corresponding with the Roll-gap position of the milling train when being installed on the milling train.
8. the method for silicon steel cold rolling high under magnetic field according to claim 1, which is characterized in that described to roll in step (4) The mill speed of machine is 0.1m/s -2m/s.
CN201910634297.XA 2019-07-15 2019-07-15 A method of the high silicon steel cold rolling under magnetic field Pending CN110328235A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116356126A (en) * 2023-03-30 2023-06-30 江苏甬金金属科技有限公司 Ultrathin corrosion-resistant silicon steel strip and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02112806A (en) * 1988-10-24 1990-04-25 Mitsubishi Heavy Ind Ltd Rolling device
RU2139153C1 (en) * 1998-04-03 1999-10-10 Открытое акционерное общество "Северсталь" Rolling method
RU2166390C2 (en) * 1999-01-27 2001-05-10 ОАО "Северсталь" Rolling stand
JP2004527378A (en) * 2001-03-28 2004-09-09 オトクリト・アクツィオネルノ・オブスチェストボ “セバースタル” Rolling process, stand and screw down mechanism
CN102179404A (en) * 2011-03-18 2011-09-14 东北大学 Hot roller warm-rolling device and method for metal plates and strips
KR20130053823A (en) * 2011-11-16 2013-05-24 주식회사 포스코 Cold strip rolling mill with magnetic work roll and system that contains them
CN105032926A (en) * 2015-08-17 2015-11-11 江苏大学 Method for rolling metal wire bars under magnetostatic field auxiliary effect

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02112806A (en) * 1988-10-24 1990-04-25 Mitsubishi Heavy Ind Ltd Rolling device
RU2139153C1 (en) * 1998-04-03 1999-10-10 Открытое акционерное общество "Северсталь" Rolling method
RU2166390C2 (en) * 1999-01-27 2001-05-10 ОАО "Северсталь" Rolling stand
JP2004527378A (en) * 2001-03-28 2004-09-09 オトクリト・アクツィオネルノ・オブスチェストボ “セバースタル” Rolling process, stand and screw down mechanism
CN102179404A (en) * 2011-03-18 2011-09-14 东北大学 Hot roller warm-rolling device and method for metal plates and strips
KR20130053823A (en) * 2011-11-16 2013-05-24 주식회사 포스코 Cold strip rolling mill with magnetic work roll and system that contains them
CN105032926A (en) * 2015-08-17 2015-11-11 江苏大学 Method for rolling metal wire bars under magnetostatic field auxiliary effect

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116356126A (en) * 2023-03-30 2023-06-30 江苏甬金金属科技有限公司 Ultrathin corrosion-resistant silicon steel strip and preparation method thereof
CN116356126B (en) * 2023-03-30 2024-04-19 江苏甬金金属科技有限公司 Ultrathin corrosion-resistant silicon steel strip and preparation method thereof

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