CN108906887A - A kind of preparation method of electric machine iron core orientation free silicon steel plate - Google Patents
A kind of preparation method of electric machine iron core orientation free silicon steel plate Download PDFInfo
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- CN108906887A CN108906887A CN201810613210.6A CN201810613210A CN108906887A CN 108906887 A CN108906887 A CN 108906887A CN 201810613210 A CN201810613210 A CN 201810613210A CN 108906887 A CN108906887 A CN 108906887A
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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
- B21B1/28—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 cold-rolling, e.g. Steckel cold 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
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
- B21B2275/05—Speed difference between top and bottom rolls
Abstract
A kind of preparation method of electric machine iron core orientation free silicon steel plate, is related to a kind of manufacturing method of steel plate, first on four-high mill, by changing the number of teeth of upper roll gear, adjusts the revolution of upper roller, to change the revolution ratio of up-down rollers, realizes asymmetrical rolling；Specific method of adjustment immobilizes for lower roll gear, select the number of teeth under z=16 gear；The replacement of upper roll gear, asymmetrical rolling speed ratio are respectively tetra- speed ratios of i=1.06, i=1.19, i=1.25, i=1.31；By controlling reduction ratio, the asymmetrical rolling of different drafts is carried out, plate thickness is respectively 1.8mm, 1.4mm, 1.0mm, 0.5mm, 0.35mm after cold rolling；Then processing sampling is carried out with plate of the wire-electrode cutting and processing method to different reduction ratios.Milling method of the invention can guarantee to obtain ideal texture component, suitable for the cold rolling production of non-orientation silicon steel, meet the requirement of the high magnetic strength of non-orientation silicon steel, the development of low iron loss, can prepare the high grade non-oriented silicon steel with ideal cold rolling texture component.
Description
Technical field
The present invention relates to a kind of manufacturing methods of steel plate, more particularly to a kind of system of electric machine iron core orientation free silicon steel plate
Preparation Method.
Background technique
The core material of generator and high capacity motor generally uses the high grade non-oriented silicon steel of low iron loss, it is desirable that
Easy magnetization on all directions, magnetic anisotropic are small in the face of rolling.The magnetism of silicon steel plate is influenced by crystallographic direction, in order to
The magnetism got well needs easy magnetizing axis to be parallel to surface of steel plate.
In recent years, with the continuous improvement of energy-saving and emission-reduction requirement, the efficiency of motor is also continuously improved, it is desirable that using more advanced
Other orientation free silicon steel plate, must just reduce the iron loss of non-orientation silicon steel, and control crystal orientation to improve magnetism, be to reduce nothing
The important means of iron loss of oriented silicon steel by utilizing.For example the hydraulic turbine generally requires P15/50In 2.6W or less.The No yield point silicon of this high trade mark
Steel, always using material composition, technique as research emphasis.But the iron loss that silicon steel is reduced by composition adjustment must be limited
, it walks to be at the end substantially at present.
The flat 5-33062 of Kawasaki, Japan iron open patent " manufacturing method of non-orientation silicon steel ", using hot-roll annealing and
Annealing after cold rolling and the method for adding magnetic field, obtain the silicon steel of lower iron loss, but it is relatively difficult to implement complementary field in production.
Kawasaki, Japan iron open patent 2000-309859 " rolls the excellent silicon steel manufacturing method of average magnetic in face ", adopts
With after hot rolling under protective atmosphere normalizing treatment, then chilling, carries out cold rolling non-at room temperature, finally under protective atmosphere into
Row recrystallization decarburization and annealing obtain magnetic uniform non-orientation silicon steel.This method and process is more complicated, at high cost.
Non-orientation silicon steel will pass through the stages such as hot rolling, normalizing and cold rolling and recrystallization annealing in process of production, wherein
Cold rolling is the important link in non-orientation silicon steel production, and the difference of cold rolling and hot rolling is before deforming that material does not heat, and deforms
Temperature is far below recrystallization temperature.The quality of cold-rolled quality has important influence to recrystallized structure and texture, and then to final
The magnetic property of finished product has an impact.It is the class that people pay close attention to for a long time by improving cold-rolling process to obtain ideal cold rolling texture component
Topic is recrystallized speed and is had significant difference, texture component due to the difference of the crystal orientation of the deformed grains in cold-reduced sheet
It is different, texture distribution and each component intensity on the magnetic property of cold rolling non-orientation silicon steel have significantly affect.Therefore, to asynchronous
Rolling non-orientation silicon steel is studied, and the asymmetry of asymmetrical rolling, board memory has in the area Cuo Zha furthermore with asymmetrical rolling
The features such as draught pressure is low, and rolling accuracy is high rolls non-orientation silicon steel in different drafts and speed ratio, and preparation has reason
Think the non-orientation silicon steel of cold rolling texture.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation method of electric machine iron core orientation free silicon steel plate, rollings of the invention
Method can guarantee to obtain ideal texture component, and the cold rolling suitable for non-orientation silicon steel produces, and meet the high magnetic of non-orientation silicon steel
The requirement that sense, low iron loss develop can prepare the high grade non-oriented silicon steel with ideal cold rolling texture component.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of preparation method of electric machine iron core orientation free silicon steel plate, the method includes following preparation process：
First on four-high mill, by changing the number of teeth of upper roll gear, the revolution of upper roller is adjusted, to change turning for up-down rollers
Number ratio, realizes asymmetrical rolling；Topping roll is slow roll, and bottom roll is quick roll, and asymmetrical rolling speed ratio is the upper roller number of teeth except following
The ratio of roller tooth number, is indicated with i, and the number of teeth of gear indicates that subscript respectively indicates upper roll gear and lower roll gear with z；Speed ratio
Change by the following method, specific method of adjustment immobilizes for lower roll gear, select the number of teeth under z=16 gear；Upper roller tooth
The replacement of wheel realized by selecting the gear of the different numbers of teeth, select on z respectively=17, z it is upper=19, z it is upper=20, z it is upper=21, from
And achieve the purpose that adjust speed ratio, asymmetrical rolling speed ratio is respectively tetra- speed of i=1.06, i=1.19, i=1.25, i=1.31
Than；By controlling reduction ratio, the asymmetrical rolling of different drafts is carried out, plate thickness is respectively 1.8mm, 1.4mm, 1.0mm after cold rolling,
0.5mm, 0.35mm；Then processing sampling is carried out with plate of the wire-electrode cutting and processing method to different reduction ratios, texture determination is spreading out
Instrument progress is penetrated, selects CO target as radiation source, tube voltage is 35 kilovolts, and tube current is 40 milliamperes；Test 110,200,211 poles
Figure, data acquisition are automatically performed by computer, carry out data processing using professional texture software.
A kind of preparation method of the electric machine iron core orientation free silicon steel plate, the reduction ratio is controlled as 18%,
36%、55%、77%、84%。
A kind of preparation method of electric machine iron core orientation free silicon steel plate, it is 2.2mm's that the raw material, which choose thickness,
Non-orientation silicon steel normalizing plate, cold rolling direction are consistent with the rolling direction of original plate always.
A kind of preparation method of electric machine iron core orientation free silicon steel plate, the sample is having a size of 20 millimeters × 18 millis
Rice.
The present invention understands fully under different speed ratios that cold rolling texture component specifies best drafts, is conducive to the magnetic for improving silicon steel
Property.
Detailed description of the invention
Fig. 1（a）When for speed ratio i=1.06, texture development figure that reduction ratio is 18%；
Fig. 1（b）When for speed ratio i=1.06, texture development figure that reduction ratio is 36%；
Fig. 1（c）When for speed ratio i=1.06, texture development figure that reduction ratio is 55%；
Fig. 1（d）When for speed ratio i=1.06, texture development figure that reduction ratio is 77%；
Fig. 1（e）When for speed ratio i=1.06, texture development figure that reduction ratio is 84%；
Fig. 2（a）When for speed ratio i=1.19, texture development figure that reduction ratio is 18%；
Fig. 2（b）When for speed ratio i=1.19, texture development figure that reduction ratio is 36%；
Fig. 2（c）When for speed ratio i=1.19, texture development figure that reduction ratio is 55%；
Fig. 2（d）When for speed ratio i=1.19, texture development figure that reduction ratio is 77%；
Fig. 2（e）When for speed ratio i=1.19, texture development figure that reduction ratio is 84%；
Fig. 3（a）When for reduction ratio being 77%, when speed ratio 1.06 rolling fast roller side texture component variation diagram；
Fig. 3（b）When for reduction ratio being 77%, when speed ratio 1.19 rolling fast roller side texture component variation diagram；
Fig. 3（c）When for reduction ratio being 77%, when speed ratio 1.25, rolls rolling fast roller side texture component variation diagram；
Fig. 3（d）When for reduction ratio being 77%, when speed ratio 1.31 rolling fast roller side texture component variation diagram；
Fig. 4（a）When for reduction ratio being 77%, when speed ratio 1.06 rolling slow rollers side texture component variation diagram；
Fig. 4（b）When for reduction ratio being 77%, when speed ratio 1.19 rolling slow rollers side texture component variation diagram；
Fig. 4（c）When for reduction ratio being 77%, when speed ratio 1.25 rolling slow rollers side texture component variation diagram；
Fig. 4（d）When for reduction ratio being 77%, when speed ratio 1.31 rolling slow rollers side texture component variation diagram；
Fig. 5 is texture component position view in the ODF sectional view of permanent φ=45 °.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
Embodiment 1：
Asymmetrical rolling speed ratio is the upper roller number of teeth divided by the ratio of the lower roll number of teeth, is indicated with i, the number of teeth of gear is indicated with z, subscript
Respectively indicate upper roll gear and lower roll gear.Lower roll gear immobilizes, select the number of teeth under z=16 gear, upper roll gear choosing
=17 gear is selected on number of teeth z, controls the milling train upper roller number of teeth to change speed ratio, speed ratio i=1.06 will be with a thickness of the quality of 2.2mm
Score is the high grade non-oriented silicon steel normalizing plate of 3% silicon, is respectively 18%, 36%, 55%, 77%, 84% to be rolled with reduction ratio
System, obtains the cold rolled sheet of different-thickness, then carries out processing sampling with plate of the wire-electrode cutting and processing method to different reduction ratios,
Having a size of 20 millimeters × 18 millimeters, texture determination carries out sample in diffractometer, selects CO target as radiation source, and tube voltage is 35,000
Volt, tube current are 40 milliamperes.110,200,211 pole figures are tested, data acquisition is automatically performed by computer, soft using professional texture
Part carries out data processing, obtains ODF figure, so that the texture component of sample is known, as can be seen that being in reduction ratio from attached drawing 1
When 77%, ideal texture component has been obtained.
Embodiment 2：
Asymmetrical rolling speed ratio is the upper roller number of teeth divided by the ratio of the lower roll number of teeth, is indicated with i, the number of teeth of gear is indicated with z, subscript
Respectively indicate upper roll gear and lower roll gear.Lower roll gear immobilizes, select the number of teeth under z=16 gear, upper roll gear choosing
=19 gear is selected on number of teeth z, controls the milling train upper roller number of teeth to change speed ratio, speed ratio i=1.19 will be with a thickness of the quality of 2.2mm
Score is the high grade non-oriented silicon steel normalizing plate of 3% silicon, is respectively 18%, 36%, 55%, 77%, 84% to be rolled with reduction ratio
System, obtains the cold rolled sheet of different-thickness, then carries out processing sampling with plate of the wire-electrode cutting and processing method to different reduction ratios,
Having a size of 20 millimeters × 18 millimeters, texture determination carries out sample in diffractometer, selects CO target as radiation source, and tube voltage is 35,000
Volt, tube current are 40 milliamperes.110,200,211 pole figures are tested, data acquisition is automatically performed by computer, soft using professional texture
Part carries out data processing, obtains ODF figure, so that the texture component of sample is known, as can be seen that being in reduction ratio from attached drawing 2
When 77%, ideal texture component has been obtained.
It can be seen that the raising with reduction ratio from Fig. 1 and Fig. 2, when reduction ratio reaches 77%, texture component is gradually steady
It is fixed, there is stronger r texture component.Accordingly, it is determined that carrying out carrying out asymmetrical rolling reality under different speed ratios when reduction ratio is 77%
It tests.Fig. 3 is when reduction ratio is 77%, and rolling texture component variation under different speed ratios, it is 77% that Fig. 4, which is in reduction ratio,
When, rolling texture component variation under different speed ratios.Texture component position view is shown in attached in permanent φ=45 ° ODF sectional view
Fig. 5.It can be determined that the fast roller side Main Texture group of Fig. 3 is divided into { 111 } face and is parallel to the r texture in the face of rolling, anti-goss texture according to Fig. 5
{001}<110>, in r texture component, { 111 }<112>Component is most strong.It can be determined that Fig. 4 slow rollers side texture component according to Fig. 5
Identical with the fast roller side texture component of Fig. 3, only slow rollers side intensity is higher than fast roller side.
Claims (4)
1. a kind of preparation method of electric machine iron core orientation free silicon steel plate, which is characterized in that prepared the method includes following
Journey：
First on four-high mill, by changing the number of teeth of upper roll gear, the revolution of upper roller is adjusted, to change turning for up-down rollers
Number ratio, realizes asymmetrical rolling；Topping roll is slow roll, and bottom roll is quick roll, and asymmetrical rolling speed ratio is the upper roller number of teeth except following
The ratio of roller tooth number, is indicated with i, and the number of teeth of gear indicates that subscript respectively indicates upper roll gear and lower roll gear with z；Speed ratio
Change by the following method, specific method of adjustment immobilizes for lower roll gear, selects the number of teeth for zUnder=16 gear；Upper roller tooth
The replacement of wheel is realized by selecting the gear of the different numbers of teeth, selects z respectivelyOn=17、zOn=19、zOn=20、zOn=21, to reach
To the purpose of adjustment speed ratio, asymmetrical rolling speed ratio is respectively tetra- speed ratios of i=1.06, i=1.19, i=1.25, i=1.31；It is logical
Control reduction ratio to be crossed, the asymmetrical rolling of different drafts is carried out, plate thickness is respectively 1.8mm, 1.4mm, 1.0mm after cold rolling,
0.5mm, 0.35mm；Then processing sampling is carried out with plate of the wire-electrode cutting and processing method to different reduction ratios, texture determination is spreading out
Instrument progress is penetrated, C is selectedOFor target as radiation source, tube voltage is 35 kilovolts, and tube current is 40 milliamperes；Test 110,200,211 poles
Figure, data acquisition are automatically performed by computer, carry out data processing using professional texture software.
2. a kind of preparation method of electric machine iron core orientation free silicon steel plate according to claim 1, which is characterized in that described
Reduction ratio is controlled as 18%, 36%, 55%, 77%, 84%.
3. a kind of preparation method of electric machine iron core orientation free silicon steel plate according to claim 1, which is characterized in that described
Raw material choose the non-orientation silicon steel normalizing plate that thickness is 2.2mm, and cold rolling direction is consistent with the rolling direction of original plate always.
4. a kind of preparation method of electric machine iron core orientation free silicon steel plate according to claim 1, which is characterized in that described
Sample is having a size of 20 millimeters × 18 millimeters.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110396642A (en) * | 2019-07-29 | 2019-11-01 | 江苏理工学院 | Non-oriented electrical steel and preparation method thereof with { 100 } texture |
| EP3858503A1 (en) * | 2020-01-28 | 2021-08-04 | Primetals Technologies Germany GmbH | Rolling mill with material property dependent rolling |
| CN113369079A (en) * | 2021-06-10 | 2021-09-10 | 红云红河烟草(集团)有限责任公司 | Design method of asynchronous gluing system of cigarette making and tipping unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396642A (en) * | 2019-07-29 | 2019-11-01 | 江苏理工学院 | Non-oriented electrical steel and preparation method thereof with { 100 } texture |
| EP3858503A1 (en) * | 2020-01-28 | 2021-08-04 | Primetals Technologies Germany GmbH | Rolling mill with material property dependent rolling |
| RU2767125C1 (en) * | 2020-01-28 | 2022-03-16 | Прайметалз Текнолоджиз Джермани Гмбх | Rolling mill for rolling properties depending on rolling properties |
| US11458518B2 (en) | 2020-01-28 | 2022-10-04 | Primetals Technologies Germany Gmbh | Rolling mill with rolling dependent on material properties |
| CN113369079A (en) * | 2021-06-10 | 2021-09-10 | 红云红河烟草(集团)有限责任公司 | Design method of asynchronous gluing system of cigarette making and tipping unit |
| CN113369079B (en) * | 2021-06-10 | 2023-04-07 | 红云红河烟草(集团)有限责任公司 | Design method of asynchronous gluing system of cigarette making and tipping unit |
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Application publication date: 20181130 |