CN108517395A - A kind of cold rolling non-oriented electrical steel band and preparation method thereof - Google Patents
A kind of cold rolling non-oriented electrical steel band and preparation method thereof Download PDFInfo
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- CN108517395A CN108517395A CN201810472997.9A CN201810472997A CN108517395A CN 108517395 A CN108517395 A CN 108517395A CN 201810472997 A CN201810472997 A CN 201810472997A CN 108517395 A CN108517395 A CN 108517395A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1222—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1272—Final recrystallisation annealing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
The invention discloses a kind of cold rolling non-oriented electrical steel band and preparation method thereof, for molten steel by direct casting and wick-containing pressure at sheet billet, sheet billet is directly entered heating furnace heating and thermal insulation；Again through seven rack continuous rollings at the hot rolled plate of 2.0~2.5mm thickness；Hot rolled plate is by normalizing pickling, single stand cold mill, continuous annealing, coating and the electrical steel strip finished product that 0.5mm thickness is made.Obtained cold rolling non-oriented electrical steel band, magnetic property is excellent, the iron loss P of finished product1.5/50≤ 3.00W/Kg, magnetic strength B5000≥1.68T；And surface of steel plate is met the needs of users without flaws, excellent surface qualities such as striped, corrugation prints.
Description
Technical field
The invention belongs to cold rolling non-oriented electrical steel technical field more particularly to a kind of cold rolling non-oriented electrical steel band and its
Preparation method.
Background technology
Cold-rolled non-oriented electrical steel is widely used in stator or rotor manufacturing of electric machines.Magnetism of the motor to electric steel plate
Energy requirement is very high, while having very strict requirements to steel strip surface quality again.Using continuous casting and rolling technique of sheet bar production electricity
When work steel band, when chemical composition is in a certain range, electrical sheet finished product steel belt surface will appear striped, corrugation print defect.With
Electrical Steel In China market competition is growing more intense, and produces the cold rolling non-oriented electrical steel finished product steel belt of excellent surface quality just very
It is necessary.
Invention content
In order to solve the above technical problems, the present invention provides a kind of cold rolling non-oriented electrical steel band and preparation method thereof, use
The ingredient and preparation process for accurately controlling steel are crossed, the cold rolling non-orientation electrician for obtaining a kind of excellent surface quality, having excellent magnetic characteristics
Steel band.
The technical solution that the present invention takes is：
A kind of preparation method of cold rolling non-oriented electrical steel band, includes the following steps：
(1) steel plate is casting continuously to form continuous casting billet；
(2) continuous casting billet enters heating furnace heating and thermal insulation；
(3) through seven rack tandem rollings at hot rolled plate；
(4) normalizing pickling；
(5) single stand cold mill；
(6) continuous annealing；
(7) coating, finished product.
The cold rolling non-oriented electrical steel band includes following chemical composition and weight percent：C≤0.005%, 1.5%≤
Si≤2.5%, 0.1%≤Mn≤0.5%, P≤0.04%, 0.1%≤Als≤0.4%, S≤0.007%, N≤0.005%,
Ti≤0.006%, remaining is Fe and inevitable impurity.
Further, it is preferable to which it includes following chemical composition and weight percent to be：：C0.0034≤C≤0.0046%,
1.7%≤Si≤2.1%, 0.2%≤Mn≤0.3%, P≤0.04%, 0.19%≤Als≤0.27%, S≤0.005%, N
≤ 0.004%, 0.003%≤Ti≤0.006%, remaining is Fe and inevitable impurity.
In the step (2), 1100~1300 DEG C of the heating temperature of heating furnace, soaking time is 0.5~1.5h.Further
Ground, preferably, 1198~1252 DEG C of heating temperature, 0.8~1h of soaking time.
In the step (3), the finishing temperature of hot rolling is at 850~950 DEG C, and coiling temperature is at 650~750 DEG C.Further
Ground, preferably, the finishing temperature of hot rolling is at 858~882 DEG C, and coiling temperature is at 667~693 DEG C
It in the step (4), is carried out on normalizing pickling normalizing line, normalizing temperature is 870~920 DEG C, pickling temperature 70
~90 DEG C.Further, normalizing temperature is preferably 876~903 DEG C, and pickling temperature is preferably 78~86 DEG C.
In the step (5), single stand cold mill carries out on 6 roll reversing rollers, 5~6 passes.
In the step (6), continuous annealing carries out in continuous annealing furnace, and annealing temperature is 750~900 DEG C, when heat preservation
Between be 1~3min, nitrogen hydrogen mixeding gas protection, hydrogen content percentage by volume in 20~30%, stove dew point control 20~
30℃.Further, annealing temperature is preferably 848~862 DEG C.
The continuous casting billet, cold-reduced sheet thickness be respectively 2.0~2.5mm, 0.5mm.
The present invention is by accurately controlling the ingredient and processing parameter of electrical steel strip, obtained cold rolling non-oriented electrical steel
Band, magnetic property is excellent, the iron loss P of finished product1.5/50≤ 3.00W/Kg, magnetic strength B5000≥1.68T；And surface of steel plate without striped, watt
Flaws, the excellent surface qualities such as stupefied print are met the needs of users.
Specific implementation mode
The following describes the present invention in detail with reference to examples.
Embodiment 1
A kind of cold rolling non-oriented electrical steel band, chemical component weight percentage C：0.0045, Si：1.80 Mn：0.3,
P：0.03, Als：0.20, S：0.0040, N:0.0030, Ti：0.0030, remaining is Fe and inevitable impurity.
The preparation method of the cold rolling non-oriented electrical steel band is：Molten steel direct casting and wick-containing pressure are at thickness 65mm's
Sheet billet, sheet billet are directly entered heating furnace heating and thermal insulation, and the temperature of heating furnace is at 1200 DEG C, heating time 1h；Again through seven
Rack continuous rolling at 2.2mm thickness hot rolled plate；Hot rolled plate by normalizing pickling, single stand cold mill, continuous annealing, coating and
The electrical steel strip finished product of 0.5mm thickness is made.
The finishing temperature of hot rolling is 880 DEG C, and coiling temperature is 690 DEG C；Normalizing temperature is 880 DEG C, and chlorohydric acid pickling temperature is
80℃；5 passage of single stand cold mill is rolled to 0.5mm thickness；Continuous annealing carries out in continuous annealing furnace, and continuous annealing temperature is
860 DEG C, soaking time 1.5min, nitrogen hydrogen mixeding gas protection, hydrogen content percentage by volume dew point control in 30%, stove exists
30℃。
The cold rolling non-oriented electrical steel belt surface manufactured through above-mentioned technique does not have the flaws such as striped, corrugation print, surface quality
It is excellent, the iron loss P of finished product1.5/50For 2.80W/Kg, magnetic strength B5000For 1.70T, magnetic property is excellent.
Embodiment 2
A kind of cold rolling non-oriented electrical steel band, chemical component weight percentage C：0.0035, Si：2.20 Mn：0.2,
P：0.04, Als：0.25, S：0.0050, N:0.0040, Ti：0.0060, remaining is Fe and inevitable impurity.
The preparation method of the cold rolling non-oriented electrical steel band is：Molten steel direct casting and wick-containing pressure are at thickness 55mm's
Sheet billet, sheet billet are directly entered heating furnace heating and thermal insulation, and the temperature of heating furnace is at 1250 DEG C, heating time 0.8h；It passes through again
Seven rack continuous rollings at 2.5mm thickness hot rolled plate；Hot rolled plate is by normalizing pickling, single stand cold mill, continuous annealing, coating
And the electrical steel strip finished product of 0.5mm thickness is made.
The finishing temperature of hot rolling is 860 DEG C, and coiling temperature is 670 DEG C；Normalizing temperature is 900 DEG C, and chlorohydric acid pickling temperature is
85℃；6 passage of single stand cold mill is rolled to 0.5mm thickness；Continuous annealing carries out in continuous annealing furnace, and continuous annealing temperature is
850 DEG C, soaking time 1.5min, nitrogen hydrogen mixeding gas protection, hydrogen content percentage by volume dew point control in 25%, stove exists
25℃。
The cold rolling non-oriented electrical steel belt surface manufactured through above-mentioned technique does not have the flaws such as striped, corrugation print, surface quality
It is excellent, the iron loss P of finished product1.5/50For 2.65W/Kg, magnetic strength B5000For 1.69T, magnetic property is excellent.
The above-mentioned detailed description carried out to a kind of cold rolling non-oriented electrical steel band and preparation method thereof with reference to embodiment, is to say
Bright property without being restrictive, several embodiments can be enumerated according to limited range, therefore of the invention total not departing from
Change and modification under body design, should belong within protection scope of the present invention.
Claims (10)
1. a kind of preparation method of cold rolling non-oriented electrical steel band, which is characterized in that include the following steps：
(1) steel plate is casting continuously to form continuous casting billet；
(2) continuous casting billet enters heating furnace heating and thermal insulation；
(3) through seven rack tandem rollings at hot rolled plate；
(4) normalizing pickling；
(5) single stand cold mill；
(6) continuous annealing；
(7) coating, finished product.
2. preparation method according to claim 1, which is characterized in that the cold rolling non-oriented electrical steel band includes followingization
It studies point and weight percent：C≤0.005%, 1.5%≤Si≤2.5%, 0.1%≤Mn≤0.5%, P≤0.04%,
0.1%≤Als≤0.4%, S≤0.007%, N≤0.005%, Ti≤0.006%, remaining is Fe and inevitable impurity.
3. preparation method according to claim 1, which is characterized in that including following chemical composition and weight percent：
C0.0034≤C≤0.0046%, 1.7%≤Si≤2.3%, 0.2%≤Mn≤0.3%, P≤0.04%, 0.19%≤Als
≤ 0.27%, S≤0.005%, N≤0.004%, 0.003%≤Ti≤0.006%, remaining is Fe and inevitable impurity.
4. preparation method according to claim 1, which is characterized in that in the step (2), the heating temperature of heating furnace
1100~1300 DEG C, soaking time is 0.5~1.5h.
5. preparation method according to claim 1, which is characterized in that in the step (3), the finishing temperature of hot rolling exists
850~950 DEG C, coiling temperature is at 650~750 DEG C.
6. according to the preparation method described in claim 1-3 any one, which is characterized in that in the step (4), normalizing pickling
It is carried out on normalizing line, normalizing temperature is 870~920 DEG C, and pickling temperature is 70~90 DEG C.
7. according to the preparation method described in claim 1-3 any one, which is characterized in that in the step (5), single chassis is cold
It rolls and is carried out on 6 roll reversing rollers, 5~6 passes.
8. according to the preparation method described in claim 1-3 any one, which is characterized in that in the step (6), continuous annealing
It is carried out in continuous annealing furnace, annealing temperature is 750~900 DEG C, and soaking time is 1~3min, nitrogen hydrogen mixeding gas protection, hydrogen
Gas content percentage by volume dew point in 20~30%, stove is controlled at 20~30 DEG C.
9. according to the preparation method described in claim 1-3 any one, which is characterized in that the continuous casting billet, cold-reduced sheet thickness
Degree is respectively 2.0~2.5mm, 0.5mm.
10. the cold rolling non-oriented electrical steel band that preparation method according to claim 1 is prepared, which is characterized in that institute
State the iron loss P of cold rolling non-oriented electrical steel band1.5/50≤ 3.00W/Kg, magnetic strength B5000≥1.68T。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810472997.9A CN108517395A (en) | 2018-05-17 | 2018-05-17 | A kind of cold rolling non-oriented electrical steel band and preparation method thereof |
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| CN201810472997.9A CN108517395A (en) | 2018-05-17 | 2018-05-17 | A kind of cold rolling non-oriented electrical steel band and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822070A (en) * | 2018-12-28 | 2019-05-31 | 日照钢铁控股集团有限公司 | A kind of full endless rolling electric drive non-oriented electrical steel of sheet billet and preparation method |
| CN110106447A (en) * | 2019-04-28 | 2019-08-09 | 首钢智新迁安电磁材料有限公司 | A kind of high-magnetic strength non-oriented electrical steel and preparation method thereof |
| CN111235462A (en) * | 2020-03-04 | 2020-06-05 | 马鞍山钢铁股份有限公司 | Easy-blanking electrical steel for high-efficiency fixed-frequency compressor, manufacturing method of easy-blanking electrical steel, iron core prepared from easy-blanking electrical steel and heat treatment method of iron core |
| CN111245176A (en) * | 2020-03-04 | 2020-06-05 | 马鞍山钢铁股份有限公司 | Production process of cast aluminum iron core for reducing stray loss of compressor |
| CN112030059A (en) * | 2020-08-31 | 2020-12-04 | 武汉钢铁有限公司 | Short-process production method of non-oriented silicon steel |
| CN112063819A (en) * | 2020-09-11 | 2020-12-11 | 马鞍山钢铁股份有限公司 | High-yield-ratio non-oriented silicon steel and manufacturing method thereof |
| CN112159927A (en) * | 2020-09-17 | 2021-01-01 | 马鞍山钢铁股份有限公司 | Cold-rolled non-oriented silicon steel with different yield ratios and production methods of two products thereof |
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| CN103614615A (en) * | 2013-09-24 | 2014-03-05 | 马钢(集团)控股有限公司 | Low cost cold rolling non-oriented electrical steel production method |
| CN104789860A (en) * | 2015-05-07 | 2015-07-22 | 马钢(集团)控股有限公司 | Electrical steel and production method thereof |
| CN106756522A (en) * | 2017-03-21 | 2017-05-31 | 马钢(集团)控股有限公司 | The low iron loss of one kind production, high-magnetic strength non-oriented electrical steel and its manufacture method |
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Patent Citations (3)
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| CN103614615A (en) * | 2013-09-24 | 2014-03-05 | 马钢(集团)控股有限公司 | Low cost cold rolling non-oriented electrical steel production method |
| CN104789860A (en) * | 2015-05-07 | 2015-07-22 | 马钢(集团)控股有限公司 | Electrical steel and production method thereof |
| CN106756522A (en) * | 2017-03-21 | 2017-05-31 | 马钢(集团)控股有限公司 | The low iron loss of one kind production, high-magnetic strength non-oriented electrical steel and its manufacture method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822070A (en) * | 2018-12-28 | 2019-05-31 | 日照钢铁控股集团有限公司 | A kind of full endless rolling electric drive non-oriented electrical steel of sheet billet and preparation method |
| CN110106447A (en) * | 2019-04-28 | 2019-08-09 | 首钢智新迁安电磁材料有限公司 | A kind of high-magnetic strength non-oriented electrical steel and preparation method thereof |
| CN111235462A (en) * | 2020-03-04 | 2020-06-05 | 马鞍山钢铁股份有限公司 | Easy-blanking electrical steel for high-efficiency fixed-frequency compressor, manufacturing method of easy-blanking electrical steel, iron core prepared from easy-blanking electrical steel and heat treatment method of iron core |
| CN111245176A (en) * | 2020-03-04 | 2020-06-05 | 马鞍山钢铁股份有限公司 | Production process of cast aluminum iron core for reducing stray loss of compressor |
| CN111235462B (en) * | 2020-03-04 | 2021-12-24 | 马鞍山钢铁股份有限公司 | Easy-blanking electrical steel for high-efficiency fixed-frequency compressor, manufacturing method of easy-blanking electrical steel, iron core prepared from easy-blanking electrical steel and heat treatment method of iron core |
| CN112030059A (en) * | 2020-08-31 | 2020-12-04 | 武汉钢铁有限公司 | Short-process production method of non-oriented silicon steel |
| CN112030059B (en) * | 2020-08-31 | 2021-08-03 | 武汉钢铁有限公司 | Short-process production method of non-oriented silicon steel |
| CN112063819A (en) * | 2020-09-11 | 2020-12-11 | 马鞍山钢铁股份有限公司 | High-yield-ratio non-oriented silicon steel and manufacturing method thereof |
| CN112159927A (en) * | 2020-09-17 | 2021-01-01 | 马鞍山钢铁股份有限公司 | Cold-rolled non-oriented silicon steel with different yield ratios and production methods of two products thereof |
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Address after: 243003 8 Jiuhua Road, Yushan, Ma'anshan, Anhui Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 intellectual property department, technology center, No. 8 Hunan West Road, Yushan, Ma'anshan, Anhui Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
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Application publication date: 20180911 |