CN110434171A - A kind of band tension continuous rolling method of high silicon steel - Google Patents
A kind of band tension continuous rolling method of high silicon steel Download PDFInfo
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- CN110434171A CN110434171A CN201910642699.4A CN201910642699A CN110434171A CN 110434171 A CN110434171 A CN 110434171A CN 201910642699 A CN201910642699 A CN 201910642699A CN 110434171 A CN110434171 A CN 110434171A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-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
- B21B1/22—Metal-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
- B21B1/24—Metal-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 in a continuous or semi-continuous process
- B21B1/26—Metal-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 in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
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Abstract
The invention belongs to metallurgical technologies and materials science field, and it is an object of the present invention to provide a kind of technique for continuous rolling method of high silicon steel, meets rolling with (stock) tension in high silicon steel thin belt preparation process and batch.Alloy Fe content used is that 93~96.5%, Si content is 3.5~7%, is mass ratio, the original depth before rolling be 0.5~3.5mm, after rolling with (stock) tension with a thickness of 0.1~1mm.The plate that rolls after laser welding is connect by this method with leader tape, auxiliary heating is carried out by open hearth and induction heating, then it batched, heated, uncoiling and rolling with (stock) tension, under suitable rolling technological parameter, by the rolling with (stock) tension of multi-pass, the available high silicon steel thin belt with a thickness of 0.1~1mm.Technical solution of the present invention, the warm-rolling with tension and cold rolling being carried out to high silicon steel to test, and can directly being batched, the band high silicon steel plate plate shape of tension of acquisition is excellent, side splits that less, stress is smaller, thickness is uniform, is of great significance to high silicon steel field pilot application.
Description
Technical field
The present invention relates to a kind of band tension continuous rolling methods of high silicon steel, belong to metal material processing field.
Technical background
High silicon steel refers generally to the silicon steel that silicon content is more than 3.5% (weight ratio, similarly hereinafter).With common silicon steel (silicon content≤
3.5%) it compares, high silicon steel, especially siliceous 6.5% high silicon steel resistivity with higher and magnetic conductivity, lower coercive
Power, close to zero magnetostriction coefficient the features such as, thus have lower iron loss, to reduce energy consumption, reduce noise have weight
Want meaning.However, with the raising of silicone content, poor processability, wherein brittleness has when silicone content (wt) is greater than 5%
Sequence structure will will appear, and lead to brittleness at room temperature occur, increase the preparation of the alloy and difficulty of processing by [He Zhongzhi, Zhao Yu, Luo Hai
Literary electrical sheet [M] metallurgical industry publishing house, 2012].
In order to solve the brittleness of high silicon steel, gradually it is plasticized rolling and is developed [Lin Junpin, Ye Feng, Chen Guoliang etc.
.6.5wt%Si high silicon steel flat cold-rolled sheet preparation process, structure and performance front line science, 2007.2,2:13-16], utilize heat
Roll, warm-rolling, cold rolling and it is appropriate be heat-treated the method that combines successfully rolled thick 0.05mm Fe-6.5wt.%Si alloy it is thin
Plate.Wherein warm deformation improves processability [Li H, Liang Y F, Yang W, et by deformation induced unordered and dynamic recovery
Al.Disordering induced work softening of Fe -6.5wt%Si alloy during warm
deformation[J].Materials Science and Engineering:A,2015,628:262-268.]。
But it is gradually plasticized rolling at present, laboratory level is only rested on, rolling with (stock) tension, plate shape peace are not attempt to
Whole degree is also to be improved, while also rarely patent and article report high silicon steel rolling with (stock) tension.
Tension is added during the rolling process, carries out continuous rolling, can make to roll that plate plate shape is good, and thickness is uniform, is reduced and is run
Partially, draught pressure is reduced, and improves production efficiency, is of great significance to the field pilot application of high silicon steel.
Summary of the invention
The problems such as plate shape and poor flatness for occurring when for above-mentioned not rolling with (stock) tension, the present invention provides a kind of high
The band tension continuous rolling method of silicon steel, this method mainly adds tension during the rolling process, and utilizes volume furnace, open hearth and sense
Heating equipment is answered to carry out the control of temperature, by adjusting the parameters such as rolling temperature, roll-force, milling train revolving speed, drafts and tension,
Realize the band tension continuous rolling of high silicon steel.The high silicon plate obtained with rolling with (stock) tension method have plate shape is excellent, side split compared with
Less, the advantages that stress is smaller, and thickness is uniform, while this method is also the important exploration and trial to high silicon steel continuous production,
It is of great significance to high silicon steel field pilot application.
In order to realize the continuous rolling with (stock) tension of high silicon steel, specific technical solution is as follows:
A kind of band tension continuous rolling method of high silicon steel, meets rolling with (stock) tension and volume in high silicon steel thin belt preparation process
It takes.It is 93~96.5%, Si content is 3.5~7% that this method, which is mainly characterized by alloy Fe content, is mass ratio, before rolling
Initial plate thickness be 0.5~3.5mm, leader tape material is stainless steel, low-silicon steel, mild steel etc., and preparation step is as follows:
S1: welding: carrying out laser welding for high silicon steel and high silicon steel or leader tape, by the high silicon steel plate and volume after laser welding
The leader tape taken welds together, and welding manner is butt welding, and weld seam and high silicon steel length direction will keep good and hang down when welding
Straight degree, prevents from causing sideslip in rolling with (stock) tension；
S2: preheated nip roll: roll is lifted, and is preheated using the roller furnace of roll two sides to roll；
S3: it is involved in open hearth and the volume furnace heating of side, induction heating work: leader tape is involved in furnace, and adjustment is involved in one
The volume furnace peace furnace temperature of side, and the induction heating power parameter and temperature for being involved in side are set.Its central roll furnace rolls up furnace, open hearth
And induction heating equipment, it is bilateral symmetry, meets the reversing tandem rolling of high silicon steel；
S4: batch: since high silicon steel brittleness is larger, room temperature flexural is bad, by open hearth and induction heating equipment to height
Silicon steel carries out auxiliary heating, so that high silicon steel enters volume furnace；
S5: other side heating heating: remaining leader tape is involved in the volume furnace of the other side, volume furnace, the open hearth of other side
And induction heating equipment is increased to suitable temperature, steel band sufficiently heats in volume furnace；
S6: uncoiling, set rolling parameter, rolled: setting rolling temperature, roll-force, milling train revolving speed, drafts and
Power, strip uncoiling, then make the test furnace, and open hearth and induction heating equipment carry out auxiliary heating to high silicon steel, reduces temperature drop, into rolling
Roller is rolled；
S7: batch: enter and the same side S5 open hearth and induction heating equipment, supplement a part of heat, then into S5
The volume furnace of the same side；
S8: repeat-rolling: after high silicon steel sufficiently heats in volume furnace, step S6 and S7 is repeated, pressure per pass is controlled
Amount is 3~35%, finally obtains the good high silicon steel thin belt of plate shape.In addition, steel band can also carry out online heat in volume furnace
Handle (annealing) etc..
Further, in step S2, the roller furnace temperature is 80~300 DEG C, and roll is heated in rotation.
Further, in step S3 and S5, the volume furnace peace furnace temperature is 100~850 DEG C.
Further, in step S3 and S5, heating oscillation of power 17.6~30A of electric current of the induction heating, heat preservation
Power current be 17.6~20A, 100~850 DEG C of temperature.
Further, in step S6, the rolling temperature is 100~850 DEG C.
Further, in step S6, the roll-force is 700~3500kN, and milling train revolving speed is 3~15m/min.
Further, in step S6, the drafts is 3~35%, and tension is 0.2~2kN.
Further, in step S4 and S7, the coiling temperature is greater than 100 DEG C.
Further, in step S8, the plate thickness after rolling with (stock) tension is 0.1~1mm.
The progress place of this method:
1, technical solution of the present invention, it is poor to efficiently solve high silicon steel existing flatness under the conditions of no-station pole canopy,
The problems such as deformed steel strip, stress is larger.
2, using band tension continuous rolling method, it can obtain that plate shape is excellent, side splits that less, stress is smaller, thickness is uniform
High silicon steel thin belt.
3, using this method, there is the features such as high degree of automation, high production efficiency, strip can be prevented in the operation of rolling
Sideslip reduces resistance of deformation, while this method is also the important exploration and trial to high silicon steel continuous production.
Detailed description of the invention
Fig. 1 is band all-pull mill schematic diagram used in the present invention.
In figure: 1, milling train, 2, roller furnace, 3, open hearth and induction heating, 4, high silicon strip, 5, jockey pulley, 6, leader tape and high silicon
Steel band, 7, volume furnace.
Specific embodiment
Embodiment 1
The ingredient of high silicon steel plate is (mass percent): Si content is 6.49%, surplus be iron and inevitably it is miscellaneous
Matter, with a thickness of 1.8mm.
S1: welding: carrying out laser welding for high silicon steel and stainless steel, by after laser welding high silicon steel plate with batch
Leader tape welds together；
S2: preheated nip roll: roll is lifted, and is preheated using the roller furnace of roll two sides to roll, preheating temperature 180
℃；
S3: it is involved in open hearth and the volume furnace heating of side, induction heating work: leader tape is involved in furnace, and adjustment is involved in one
The volume furnace peace furnace temperature of side is 800 DEG C, the heating oscillation of power electric current 25A of sensing apparatus, and heat preservation power current is 17.6A,
800 DEG C of temperature；
S4: it batches: auxiliary heating being carried out to high silicon steel by open hearth and induction heating equipment, high silicon steel enters volume furnace；
S5: other side heating heating: remaining leader tape is involved in the volume furnace of the other side, adjusts the volume furnace peace of the other side
Furnace temperature be 800 DEG C, the heating oscillation of power electric current 25A of sensing apparatus, heat preservation power current be 17.6A, 800 DEG C of temperature, steel
Band sufficiently heats in volume furnace；
S6: uncoiling sets rolling parameter, is rolled: setting rolling temperature as 760 DEG C, roll-force 1300kN, milling train
Revolving speed 10m/min, drafts 10%, tension 0.5kN, strip uncoiling, then make the test furnace, and open hearth and induction heating equipment are to height
Silicon steel carries out auxiliary heating, reduces temperature drop and is rolled into roll；
S7: batch: high silicon steel enters the open hearth and induction heating equipment with the same side S5, supplements a part of heat, then
It is involved in the volume furnace with the same side S5；
S8: repeat-rolling: sufficiently after heating, repeating step S6 and S7, and the drafts controlled per pass is 3~35%, most
The high silicon steel thin belt of good 1mm of plate shape or so is obtained eventually.With the increase of passage, tension is gradually decreased, and prevents from causing disconnected band.
Embodiment 2
The ingredient of high silicon steel plate is (mass percent): Si content is 6.51%, surplus be iron and inevitably it is miscellaneous
Matter, with a thickness of 1.1mm.
S1: welding: carrying out laser welding for high silicon steel and stainless steel, by after laser welding high silicon steel plate with batch
Leader tape welds together；
S2: preheated nip roll: roll is lifted, and is preheated using the roller furnace of roll two sides to roll, preheating temperature 180
℃；
S3: it is involved in open hearth and the volume furnace heating of side, induction heating work: leader tape is involved in furnace, and adjustment is involved in one
The volume furnace peace furnace temperature of side is 700 DEG C, the heating oscillation of power electric current 25A of sensing apparatus, and heat preservation power current is 17.6A,
700 DEG C of temperature；
S4: it batches: auxiliary heating being carried out to high silicon steel by open hearth and induction heating equipment, high silicon steel enters volume furnace；
S5: other side heating heating: remaining leader tape is involved in the volume furnace of the other side, adjusts the volume furnace peace of the other side
Furnace temperature be 800 DEG C, the heating oscillation of power electric current 25A of sensing apparatus, heat preservation power current be 17.6A, 700 DEG C of temperature, steel
Band sufficiently heats in volume furnace；
S6: uncoiling sets rolling parameter, is rolled: setting rolling temperature as 660 DEG C, roll-force 1500kN, milling train
Revolving speed 10m/min, drafts 10%, tension 0.5kN, strip uncoiling, then make the test furnace, and open hearth and induction heating equipment are to height
Silicon steel carries out auxiliary heating, reduces temperature drop and is rolled into roll；
S7: batch: high silicon steel enters the open hearth and induction heating equipment with the same side S5, supplements a part of heat, then
It is involved in the volume furnace with the same side S5；
S8: repeat-rolling: sufficiently after heating, repeating step S6 and S7, and the drafts controlled per pass is 3~35%, most
The high silicon steel thin belt of good 0.5mm of plate shape or so is obtained eventually.With the increase of passage, tension is gradually decreased, and prevents from causing to break
Band.
Embodiment 3
The ingredient of high silicon steel plate is (mass percent): Si content is 6.43%, surplus be iron and inevitably it is miscellaneous
Matter, with a thickness of 0.5mm.
S1: welding: carrying out laser welding for high silicon steel and stainless steel, by after laser welding high silicon steel plate with batch
Leader tape welds together；
S2: preheated nip roll: roll is lifted, and is preheated using the roller furnace of roll two sides to roll, preheating temperature 180
℃；
S3: it is involved in open hearth and the volume furnace heating of side, induction heating work: leader tape is involved in furnace, and adjustment is involved in one
The volume furnace peace furnace temperature of side is 350 DEG C, the heating oscillation of power electric current 25A of sensing apparatus, and heat preservation power current is 17.6A,
350 DEG C of temperature；
S4: it batches: auxiliary heating being carried out to high silicon steel by open hearth and induction heating equipment, high silicon steel enters volume furnace；
S5: other side heating heating: remaining leader tape is involved in the volume furnace of the other side, adjusts the volume furnace peace of the other side
Furnace temperature be 300 DEG C, the heating oscillation of power electric current 25A of sensing apparatus, heat preservation power current be 17.6A, 350 DEG C of temperature, steel
Band sufficiently heats in volume furnace；
S6: uncoiling sets rolling parameter, is rolled: setting rolling temperature as 280 DEG C, roll-force 2000kN, milling train
Revolving speed 3m/min, drafts 8%, tension 0.2kN, strip uncoiling, then make the test furnace, and open hearth and induction heating equipment are to high silicon
Steel carries out auxiliary heating, reduces temperature drop and is rolled into roll；
S7: batch: high silicon steel enters the open hearth and induction heating equipment with the same side S5, supplements a part of heat, then
It is involved in the volume furnace with the same side S5；
S8: repeat-rolling: sufficiently after heating, repeating step S6 and S7, and the drafts controlled per pass is 3~35%, most
The high silicon steel thin belt of good 0.2mm of plate shape or so is obtained eventually.With the increase of passage, tension is gradually decreased, and prevents from causing to break
Band.
Claims (9)
1. a kind of band tension continuous rolling method of high silicon steel, it is characterised in that Fe content is 93~96.5%, Si in high silicon steel
Content is 3.5~7%, is mass ratio, and the original depth before rolling is 0.5~3.5mm, and leader tape material is stainless steel, low silicon
Steel, mild steel, preparation step are as follows:
S1: welding: carrying out laser welding for high silicon steel and high silicon steel or leader tape, by the high silicon steel plate after laser welding and batches use
Leader tape weld together, welding manner is butt welding, and weld seam and high silicon steel length direction will keep good verticality when welding,
It prevents from causing sideslip in rolling with (stock) tension；
S2: preheated nip roll: roll is lifted, and is preheated using the roller furnace of roll two sides to roll；
S3: it is involved in open hearth and the volume furnace heating of side, induction heating work: leader tape is involved in furnace, and adjustment is involved in side
Furnace peace furnace temperature is rolled up, and the induction heating power parameter and temperature for being involved in side are set；Its central roll furnace, volume furnace, open hearth and sense
Heating equipment is answered, is bilateral symmetry, meets the reversing tandem rolling of high silicon steel；
S4: batch: since high silicon steel brittleness is larger, room temperature flexural is bad, by open hearth and induction heating equipment to high silicon steel
Auxiliary heating is carried out, so that high silicon steel enters volume furnace；
S5: other side heating heating: remaining leader tape is involved in the volume furnace of the other side, volume furnace, open hearth and the sense of the other side
Heating equipment is answered to be increased to suitable temperature, steel band sufficiently heats in volume furnace；
S6: uncoiling sets rolling parameter, is rolled: setting rolling temperature, roll-force, milling train revolving speed, drafts and tension,
Strip uncoiling, then make the test furnace, and open hearth and induction heating equipment carry out auxiliary heating to high silicon steel, reduces temperature drop, into roll, into
Row rolling；
S7: batch: high silicon steel enters the open hearth and induction heating equipment with the same side S5, supplements a part of heat, is then involved in
With the volume furnace of the same side S5；
S8: repeat-rolling: after high silicon steel sufficiently heats in volume furnace, repeating step S6 and S7, and the drafts controlled per pass is 3
~35%, finally obtain the good high silicon steel thin belt of plate shape；It is moved back in addition, steel band can also carry out online heat treatment in volume furnace
Fire.
2. the band tension continuous rolling method of high silicon steel according to claim 1, it is characterised in that in step S2, the roller
Furnace temperature is 80~300 DEG C, and roll is heated in rotation.
3. the band tension continuous rolling method of high silicon steel according to claim 1, which is characterized in that step S3 and S5
In, the volume furnace peace furnace temperature is 100~850 DEG C.
4. the band tension continuous rolling method of high silicon steel according to claim 1, which is characterized in that step S3 and S5
In, heating oscillation of power 17.6~30A of electric current of the induction heating, heat preservation power current be 17.6~20A, temperature 100~
850℃。
5. the band tension continuous rolling method of high silicon steel according to claim 1, which is characterized in that described in step S6
Rolling temperature is 100~850 DEG C.
6. the band tension continuous rolling method of high silicon steel according to claim 1, which is characterized in that described in step S6
Roll-force is 700~3500kN, and milling train revolving speed is 3~15m/min.
7. the band tension continuous rolling method of high silicon steel according to claim 1, which is characterized in that described in step S6
Drafts is 3~35%, and tension is 0.2~2kN.
8. the band tension continuous rolling method of high silicon steel according to claim 1, which is characterized in that step S4 and S7
In, the coiling temperature is greater than 100 DEG C.
9. the band tension continuous rolling method of high silicon steel according to claim 1, which is characterized in that in step S8, band
Power rolling after with a thickness of 0.1~1mm.
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| CN102989766A (en) * | 2012-12-25 | 2013-03-27 | 东北大学 | Method for rolling ultra-thin metal strap |
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2019
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| JP2004050274A (en) * | 2002-07-23 | 2004-02-19 | Asahi Kasei Fibers Corp | Method for manufacturing nonwoven fabric for protecting surface of coil-shaped metallic sheet and the sheet |
| CN201399466Y (en) * | 2009-03-19 | 2010-02-10 | 湖北江重机械制造有限公司 | Endless rolling cold continuous rolling device |
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