CN105074032B - The non-oriented electromagnetic steel sheet of high frequency iron loss excellent - Google Patents
The non-oriented electromagnetic steel sheet of high frequency iron loss excellent Download PDFInfo
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- CN105074032B CN105074032B CN201480016783.0A CN201480016783A CN105074032B CN 105074032 B CN105074032 B CN 105074032B CN 201480016783 A CN201480016783 A CN 201480016783A CN 105074032 B CN105074032 B CN 105074032B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 91
- 229910052742 iron Inorganic materials 0.000 title abstract description 44
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 238000007792 addition Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 9
- 238000000137 annealing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 6
- 238000005097 cold rolling Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
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- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
-
- 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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- 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
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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
- C21D8/1244—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
- C21D8/1255—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 with diffusion of elements, e.g. decarburising, nitriding
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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
- C21D8/1244—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
- C21D8/1261—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 following 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
- C21D8/1244—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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
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Abstract
A kind of non-oriented electromagnetic steel sheet, it consists of the following composition composition：In terms of quality %, contain C：Less than 0.005%, Si：1.5~4%, Mn：1.0~5%, P：Less than 0.1%, S：Less than 0.005%, Al：Less than 3%, N：Less than 0.005%, Bi：Less than 0.0030%, remainder is Fe and inevitable impurity, or, consist of the following composition composition：Contain C：Less than 0.005%, Si：1.5~4%, Mn：1.0~5%, P：Less than 0.1%, S：Less than 0.005%, Al：Less than 3%, N：Less than 0.005%, Bi：Less than 0.0030%, further contain and be selected from Ca：0.0005~0.005% and Mg：1 kind in 0.0002~0.005% or 2 kinds, in the case where largely containing Mn, it may have stable and excellent high frequency iron loss characteristic.
Description
Technical field
The present invention relates to the non-oriented electromagnetic steel sheet of high frequency iron loss excellent.
Background technology
From the viewpoint of miniaturization, high efficiency, hybrid vehicle, motor used for electric vehicle are with 400~2kHz
High-frequency region driving.For non-oriented electromagnetic steel sheet used in the core of such high-frequency electric machines, it is desirable to during high frequency
Iron loss is low.
In order to reduce the iron loss in high frequency, thickness of slab and increase intrinsic resistance are effectively reduced.But reduce the side of thickness of slab
Method has following problem：Because the rigidity of material reduces, not only operation becomes difficult, and punching man-hour, accumulation man-hour increase, therefore raw
Yield reduces.On the other hand, improving the method for intrinsic resistance does not have above-mentioned unfavorable aspect, it is possible to says it is preferably to reduce
The method of high frequency iron loss.
In order to improve intrinsic resistance, Si is effectively added.But because Si is the big element of solution strengthening ability, institute
With the increase of Si additions, to there is the problem of material from solidifying, rolling property reduces.As solve the problem method it
One, there is addition Mn to replace Si method.Due to Mn, solution strengthening ability is small compared with Si, so can suppress manufacturing reduction
While reduce high frequency iron loss.
As the technology for the additive effect for applying flexibly above-mentioned Mn, for example, Patent Document 1 discloses a kind of non-directional electricity
Magnetic steel plate, it contains Si：0.5~2.5 mass %, Mn：1.0~3.5 mass %, Al：1.0~3.0 mass %.In addition, patent
A kind of non-oriented electromagnetic steel sheet is disclosed in document 2, it contains Si：Below 3.0 mass %, Mn：1.0~4.0 mass %,
Al：1.0~3.0 mass %.
Patent document 1：Japanese Unexamined Patent Publication 2002-47542 publications
Patent document 2：Japanese Unexamined Patent Publication 2002-30397 publications
The content of the invention
But there are the following problems for the technology disclosed in above-mentioned patent document 1 and 2, i.e. sometimes with Mn additions
Increase, magnetic hystersis loss increase, cannot get desired iron loss minimizing effect.
The present invention be in view of the above-mentioned problems in the prior art and complete, it is a kind of directionless its object is to provide
Property electromagnetic steel plate, it is in the case where largely containing Mn, it may have stable and excellent high frequency iron loss characteristic.
The present inventor etc. are conceived to the impurity component contained by steel plate and are repeated deeply to solve above-mentioned problem
Research.Its result finds, the deterioration of the high frequency iron loss characteristic of potassium steel be as impurity and caused by the Bi presence that contains, because
This, by suppressing Bi content, even if Mn contents are high, also can stably reduce high frequency iron loss, thus develop the present invention.
Based on above-mentioned discovery, the present invention is a kind of non-oriented electromagnetic steel sheet, and it consists of the following composition composition：Contain C：
Below 0.005 mass %, Si：1.5~4 mass %, Mn：1.0~5 mass %, P：Below 0.1 mass %, S：0.005 mass %
Below, Al：Below 3 mass %, N：Below 0.005 mass %, Bi：Below 0.0030 mass %, remainder are Fe and can not
The impurity avoided.
The non-oriented electromagnetic steel sheet of the present invention is characterised by, in addition to mentioned component forms, is further contained and is selected from
Ca：0.0005~0.005 mass % and Mg：1 kind in 0.0002~0.005 mass % or 2 kinds.
In addition, the non-oriented electromagnetic steel sheet of the present invention is characterised by, in addition to mentioned component forms, further contain
Selected from Sb：0.0005~0.05 mass % and Sn：1 kind in 0.0005~0.05 mass % or 2 kinds.
In addition, the non-oriented electromagnetic steel sheet of the present invention is characterised by, in addition to mentioned component forms, further contain
Mo：0.0005~0.0030 mass %.
In addition, the non-oriented electromagnetic steel sheet of the present invention is characterised by that Ti content is below 0.002 mass %.
According to the present invention, by suppressing even if Mn additions are high, can also produce and the Bi content contained as impurity
Rate manufactures stable and high frequency iron loss excellent non-oriented electromagnetic steel sheet well.
Brief description of the drawings
Fig. 1 is represented containing Bi to Mn contents and high frequency iron loss W10/400Relation caused by influence figure.
Fig. 2 is to represent Bi contents and high frequency iron loss W10/400Relation figure.
Embodiment
First, the experiment to the opportunity as the exploitation present invention illustrates.
To contain C：0.0016 mass %, Si：3.35 mass %, P：0.013 mass %, S：0.0004 mass %, Al：
1.4 mass % and N：Based on 0.0018 mass % steel, Mn is added thereto, will make models of the Mn in 0.1~5.2 mass %
Enclose the steel that progress various change addition forms to dissolve in the lab, steel ingot is made and carries out hot rolling, in 100vol%N2Environment
After 1000 DEG C × 30sec of lower execution hot rolled plate annealing, carry out cold rolling and thickness of slab 0.30mm cold-reduced sheet is made, in 20vol%
H2- 80vol%N21000 DEG C × 30sec final annealing is implemented in environment.
Fig. 1's ● mark is with Mn additions and iron loss W10/400The form of relation represent the mark of above-mentioned experimental result.
From its result, when Mn is less than 1 mass %, iron loss reduces with the increase of Mn additions, but when being more than 1 mass %,
Iron loss is reduced and is slowed by, if more than 4 mass %, iron loss increases on the contrary.In order to investigate its reason, contain 2 matter with tem observation
%Mn steel plate is measured, as a result, observing granular Bi in crystal boundary.
Therefore, in order to further study Bi to influence caused by magnetic characteristic, to contain C：0.0014 mass %, Si：3.33
Quality %, Al：1.2 mass %, P：0.014 mass %, S：0.0006 mass %, N：0.0020 mass % and Bi content is
Based on below 0.0010 mass % high purity steel, Mn is added thereto, will send out scopes of the Mn in 0.1~5.2 mass %
The steel that raw various change addition forms dissolves in the lab, and cold rolled annealed plate is made in the same manner as above-mentioned experiment, determines iron loss
W10/400。
By so obtained experimental result in Fig. 1 with ▲ mark expression.From its result, the height for reducing Bi is being used
In the cold rolled annealed plate of purity steel, Mn additions are higher, relative to ● mark the steel plate of expression, its iron loss is lower.In addition, with
Tem observation contains 2 mass % Mn steel plate, as a result, granular Bi is not observed in crystal boundary.Estimated by the result, iron
Damage is with above-mentioned ● the increase of the Mn additions in the steel plate of mark and to increase be due to magnetic hysteresis caused by Bi fine precipitation
The increase of loss.
On the other hand, it is believed that be probably because of for steel plates of the Mn less than 1 mass %, although it can be seen that because Bi subtracts
The improvement of iron loss caused by few, but it is still not very clear the reasons why its ratio is small, but for the steel for improving Mn, by
(solute drag) is pulled in Mn solute, the driving force of grain growth reduces, so while micro Bi presence, crystal grain
Growth is easily greatly affected.
Bi is typically from the mixed impurity of waste material, and with the usage rate increase of waste material in recent years, not only mixed amount increases
Greatly, deviation also becomes larger.The increase for thinking such Bi contents is not big ask for the low electromagnetic steel plate of Mn contents
Topic, but for the high steel of Mn contents, because Mn solute towing makes grain growth reduction, so micro Bi is also produced very
It is big to influence.
Next, in order to study influence of the Bi contents to iron loss, to contain C：0.0022 mass %, Si：3.20 mass %,
Mn：1.7 mass %, Al：1.3 mass %, P：0.014 mass %, S：0.0005 mass %, N：0.0020 mass % steel is base
Plinth, Bi is added thereto, the content for making Bi is carried out what various change addition formed in the range of the mass % of tr.~0.0045
Steel dissolves in the lab, and thickness of slab 0.30mm cold rolled annealed plate, measure iron loss W are made in the same manner as above-mentioned experiment10/400。
With Bi contents and iron loss W in Fig. 210/400The form of relation represent above-mentioned experimental result.It can be seen that Bi contains
Measure for below 0.0030 mass % (below 30massppm) when iron loss significantly reduce.It is thought that because, it is brilliant by reducing Bi
Grain growth improves.From the result, in order to suppress Bi to harmful effect caused by grain growth, it is necessary to which Bi content is subtracted
Less to below 0.0030 mass %.The present invention is completed based on above-mentioned new discovery.
Next, the composition composition of the non-oriented electromagnetic steel sheet of the present invention is illustrated.
C：Below 0.005 mass %
C is the element that carbide is formed with Mn, if being more than 0.005 mass %, the amount of above-mentioned Mn systems carbide increase and
Grain growth is hindered, therefore the upper limit is set to 0.005 mass %.Preferably below 0.002 mass %.
Si：1.5~4 mass %
Si is to improving the intrinsic resistance of steel, reducing the effective element of iron loss, so addition more than 1.5 mass %.It is another
Aspect, if addition is more than 4 mass %, magnetic flux density reduces, therefore the upper limit is set to 4 mass %.It is preferred that Si lower limit is 2.0 matter
Measure %, the upper limit is 3.0 mass %.
Mn：1.0~5 mass %
Mn be do not cause big injury to processability and to improving the intrinsic resistance of steel, reducing in the effective present invention of iron loss
Important composition, add more than 1.0 mass %.In order to further obtain iron loss minimizing effect, preferably add 1.6 mass % with
On.On the other hand, if addition is more than 5 mass %, magnetic flux density can be reduced, so the upper limit is set to 5 mass %.It is preferred that Mn
Lower limit is 2 mass %, and the upper limit is 3 mass %.
P：Below 0.1 mass %
P is the big element of solution strengthening ability, if containing being more than 0.1 mass %, steel plate excessively hardening and manufacturing
Reduce, so being limited to below 0.1 mass %.Preferably below 0.05 mass %.
S：Below 0.005 mass %
S is inevitable impurity, if containing 0.005 mass % is more than, hinders grain growth due to separating out MnS,
Increase iron loss, so the upper limit is set to 0.005 mass %.Preferably below 0.001 mass %.
Al：Below 3 mass %
Al is identical with Si, be to improve steel intrinsic resistance, reduce the effective element of iron loss, if but addition be more than 3 matter
% is measured, then magnetic flux density reduces, so the upper limit is set to 3 mass %.Preferably below 2 mass %.But if Al content is less than
0.1 mass %, then fine AlN separate out and hinder grain growth, iron loss increase, it is advantageous to lower limit is set into 0.1 mass %.
N：Below 0.005 mass %
N is that the inevitable impurity in steel is invaded from air, in the case that content is more, is hindered due to AlN precipitation
Hinder grain growth, iron loss increase, so being 0.005 mass % by ceiling restriction.Preferably below 0.003 mass %.
Bi：Below 0.0030 mass %
Bi is to produce the dysgenic important element that should be managed to high frequency iron loss characteristic in the present invention, by above-mentioned Fig. 2
Understand, if Bi content is more than 0.0030 mass %, iron loss increased dramatically.Thus, by Bi be limited to 0.0030 mass % with
Under.Preferably below 0.0010 mass %.
The non-oriented electromagnetic steel sheet of the present invention is in addition to mentioned component forms, preferably further containing in Ca and Mg
Wantonly a kind or 2 kinds.
Ca：0.0005~0.005 mass %
Ca be to be formed sulfide, with Bi it is compound precipitation and coarsening so as to suppress Bi disadvantage, reduce iron loss it is effective
Element.In order to obtain this effect, preferably add more than 0.0005 mass %.But if addition is more than 0.005 mass %,
CaS amount of precipitation becomes excessive, and iron loss increases on the contrary, and it is advantageous to the upper limit is set into 0.005 mass %.More preferably Ca lower limit
It is 0.004 mass % for 0.001 mass %, the upper limit.
Mg：0.0002~0.005 mass %
Mg be to be formed oxide, with Bi it is compound precipitation and coarsening so as to suppress Bi disadvantage, reduce iron loss it is effective
Element.In order to obtain this effect, preferably add more than 0.0002 mass %.But it is because addition is more than 0.005 mass %
It is difficult, and it is simply futile cause cost increase, it is advantageous to the upper limit is set into 0.005%.More preferably Mg lower limit is
0.001 mass %, the upper limit are 0.004 mass %.
In addition, the present invention non-oriented electromagnetic steel sheet except mentioned component form in addition to, preferably further containing following
Composition.
Sb：0.0005~0.05 mass %, Sn：0.0005~0.05 mass %
Improve set tissue because Sb and Sn have, improve the effect of magnetic flux density, therefore can distinguish independent or compoundly
Add more than 0.0005 mass %.More preferably more than 0.01 mass %.But addition is more than 0.05 mass % and can cause steel plate
Embrittlement, it is advantageous to the upper limit is set into 0.05 mass %.More preferably Sb and Sn lower limit is respectively 0.01 mass %, and the upper limit is divided
Wei not 0.04 mass %.
Mo：0.0005~0.0030 mass %
Mo has the carbide coarsening for making to be formed, reduces the effect of iron loss, and it is advantageous to add more than 0.0005 mass %.
But during addition more than 0.0030 mass %, the amount of carbide is excessive, and iron loss increases on the contrary, and it is advantageous to be set to the upper limit
0.0030 mass %.More preferably Mo lower limit be 0.0010 mass %, the upper limit be 0.0020 mass %.
Ti：Below 0.002 mass %
Ti is the element to form carbonitride, if content is more, the amount of precipitation of carbonitride becomes excessive and hinders crystal grain
Growth, increases iron loss.Thus, in the present invention, it is preferred to which Ti is limited to below 0.002 mass %.More preferably 0.001 matter
Measure below %.
It should illustrate, the remainder in addition to mentioned component of non-oriented electromagnetic steel sheet of the invention is Fe and can not
The impurity avoided.But as long as in the range of the action effect of the present invention is not damaged, do not refuse containing other elements.
Next, the manufacture method of the non-oriented electromagnetic steel sheet of the present invention is illustrated.
As long as the manufacture method of the non-oriented electromagnetic steel sheet of the present invention makes the composition of steel plate form in the invention described above
In the range of and manufactured, then the condition beyond it is not particularly limited, can with common non-oriented electromagnetic steel sheet
Same condition is manufactured.Such as it can manufacture by the following method, i.e. be suitable to this with the melting such as converter or degassing process device
The steel of the composition composition of invention, after steel raw material (steel billet) is made by continuously casting, ingot casting-split rolling method etc., carries out hot rolling,
Carry out hot rolled plate annealing as needed, by 1 cold rolling or across intermediate annealing the cold rolling of more than 2 times into defined plate
Thickness, and carry out final annealing.
Embodiment
It is de-gassed processing to molten steel obtained by being blown with converter, and the steel to being formed with the composition shown in table 1
After carrying out melting, carry out continuously casting and steel billet is made, after the heating steel billet for carrying out 1100 DEG C × 1hr, carry out final with hot rolling
Temperature is 800 DEG C of hot rolling, is wound into a roll at a temperature of 610 DEG C, thickness of slab 1.8mm hot rolled plate is made.Then, exist
100vol%N2After the hot rolled plate annealing for implementing 1000 DEG C × 30sec in environment to the hot rolled plate, carry out cold rolling and thickness of slab is made
0.35mm cold-reduced sheet, in 20vol%H2- 80vol%N2Under environment, 980 DEG C × 15sec final annealing is implemented, cold rolling is made
Annealed sheet.
Width 30mm × length is cut from so obtained cold rolled annealed plate along rolling direction and perpendicular to the direction of rolling
280mm Epstein (Epstein) test film, iron loss W is determined according to JIS C255010/400With magnetic flux density B50, tied
Fruit is simultaneously remembered in table 1.
As shown in Table 1, for meeting the steel plate of composition composition of the present invention, be especially the reduction of Bi steel plate, i.e.,
It is high Mn contents, its high frequency iron loss characteristic is also excellent.
Claims (9)
1. a kind of non-oriented electromagnetic steel sheet, it consists of the following composition composition：
Contain C：Below 0.005 mass %, Si：1.5~4 mass %, Mn：More than 1 mass % and it is below 5 mass %, P：0.1
Below quality %, S：Below 0.005 mass %, Al：Below 3 mass %, N：Below 0.005 mass %, Bi：0.0002 mass %
Less than 0.0010 mass %, Mg：0.0002~0.005 mass %, remainder are Fe and inevitable impurity.
2. non-oriented electromagnetic steel sheet according to claim 1, it is characterised in that in addition to the composition forms, enter one
Step contains Ca：0.0005~0.005 mass %.
3. non-oriented electromagnetic steel sheet according to claim 1 or 2, it is characterised in that in addition to the composition forms, enter
One step contains selected from Sb：0.0005~0.05 mass % and Sn：1 kind in 0.0005~0.05 mass % or 2 kinds.
4. non-oriented electromagnetic steel sheet according to claim 1 or 2, it is characterised in that in addition to the composition forms, enter
One step contains Mo：0.0005~0.0030 mass %.
5. non-oriented electromagnetic steel sheet according to claim 3, it is characterised in that in addition to the composition forms, enter one
Step contains Mo：0.0005~0.0030 mass %.
6. non-oriented electromagnetic steel sheet according to claim 1 or 2, it is characterised in that Ti content is 0.002 mass %
Below.
7. non-oriented electromagnetic steel sheet according to claim 3, it is characterised in that Ti content be 0.002 mass % with
Under.
8. non-oriented electromagnetic steel sheet according to claim 4, it is characterised in that Ti content be 0.002 mass % with
Under.
9. non-oriented electromagnetic steel sheet according to claim 5, it is characterised in that Ti content be 0.002 mass % with
Under.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013060537A JP2014185365A (en) | 2013-03-22 | 2013-03-22 | Non-oriented electromagnetic steel sheet excellent in high frequency iron loss property |
| JP2013-060537 | 2013-03-22 | ||
| PCT/JP2014/056430 WO2014148328A1 (en) | 2013-03-22 | 2014-03-12 | Non-oriented magnetic steel sheet with excellent high frequency iron loss characteristics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105074032A CN105074032A (en) | 2015-11-18 |
| CN105074032B true CN105074032B (en) | 2018-01-12 |
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| CN201480016783.0A Active CN105074032B (en) | 2013-03-22 | 2014-03-12 | The non-oriented electromagnetic steel sheet of high frequency iron loss excellent |
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| Country | Link |
|---|---|
| US (1) | US20160076125A1 (en) |
| EP (1) | EP2977480B1 (en) |
| JP (1) | JP2014185365A (en) |
| KR (1) | KR101700694B1 (en) |
| CN (1) | CN105074032B (en) |
| RU (1) | RU2650469C2 (en) |
| TW (1) | TWI551694B (en) |
| WO (1) | WO2014148328A1 (en) |
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| JP6738047B2 (en) * | 2017-05-31 | 2020-08-12 | Ｊｆｅスチール株式会社 | Non-oriented electrical steel sheet and its manufacturing method |
| JP7172100B2 (en) * | 2018-04-02 | 2022-11-16 | 日本製鉄株式会社 | Non-oriented electrical steel sheet |
| KR102105530B1 (en) * | 2018-09-27 | 2020-04-28 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
| JP7328491B2 (en) * | 2018-11-09 | 2023-08-17 | 日本製鉄株式会社 | Non-oriented electrical steel sheet |
| KR102176351B1 (en) * | 2018-11-30 | 2020-11-09 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
| KR102175065B1 (en) * | 2018-11-30 | 2020-11-05 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
| KR102348508B1 (en) * | 2019-12-19 | 2022-01-07 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
| KR102325008B1 (en) * | 2019-12-20 | 2021-11-10 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
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| CN101821418A (en) * | 2007-12-03 | 2010-09-01 | 新日本制铁株式会社 | Non-oriented electromagnetic steel plate having low high-frequency iron loss and process for producing the non-oriented electromagnetic steel plate |
| CN102459675A (en) * | 2009-06-03 | 2012-05-16 | 新日本制铁株式会社 | Non-oriented electromagnetic steel sheet and method for producing same |
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| JP2540946B2 (en) * | 1989-06-30 | 1996-10-09 | 日本鋼管株式会社 | Non-oriented electrical steel sheet with excellent magnetic properties and method of manufacturing the same |
| JPH06108149A (en) * | 1992-09-29 | 1994-04-19 | Nippon Steel Corp | Production of nonoriented silicon steel sheet extremely excellent in core loss after consumer annealing |
| JP2002030397A (en) | 2000-07-13 | 2002-01-31 | Sumitomo Metal Ind Ltd | Nonoriented silicon steel sheet and its manufacturing method |
| JP3835137B2 (en) * | 2000-07-28 | 2006-10-18 | 住友金属工業株式会社 | Non-oriented electrical steel sheet and manufacturing method thereof |
| JP3835216B2 (en) * | 2001-08-09 | 2006-10-18 | 住友金属工業株式会社 | Non-oriented electrical steel sheet and manufacturing method thereof |
| DE602004031219D1 (en) * | 2003-05-06 | 2011-03-10 | Nippon Steel Corp | AS FOR IRON LOSSES IS OUTSTANDING AND MANUFACTURING METHOD THEREFOR |
| JP4414727B2 (en) | 2003-10-31 | 2010-02-10 | 新日本製鐵株式会社 | Magnetic steel sheet with excellent magnetic properties and deformation resistance and manufacturing method thereof |
| RU2362829C2 (en) * | 2004-11-04 | 2009-07-27 | Ниппон Стил Корпорейшн | Random-orientation electrotechnical steel sheet, improved from side of losses in mandrel |
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| JP5200376B2 (en) * | 2006-12-26 | 2013-06-05 | Ｊｆｅスチール株式会社 | Non-oriented electrical steel sheet and manufacturing method thereof |
| JP5417689B2 (en) * | 2007-03-20 | 2014-02-19 | Ｊｆｅスチール株式会社 | Non-oriented electrical steel sheet |
| JP5338750B2 (en) * | 2010-06-09 | 2013-11-13 | Ｊｆｅスチール株式会社 | Method for producing non-oriented electrical steel sheet |
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| KR101353463B1 (en) * | 2011-12-28 | 2014-01-21 | 주식회사 포스코 | Non-oriented electrical steel sheets and method for manufacturing the same |
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2013
- 2013-03-22 JP JP2013060537A patent/JP2014185365A/en active Pending
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2014
- 2014-03-12 CN CN201480016783.0A patent/CN105074032B/en active Active
- 2014-03-12 US US14/767,735 patent/US20160076125A1/en not_active Abandoned
- 2014-03-12 EP EP14767789.2A patent/EP2977480B1/en active Active
- 2014-03-12 KR KR1020157023252A patent/KR101700694B1/en active IP Right Grant
- 2014-03-12 RU RU2015145284A patent/RU2650469C2/en active
- 2014-03-12 WO PCT/JP2014/056430 patent/WO2014148328A1/en active Application Filing
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|---|---|---|---|---|
| CN101821418A (en) * | 2007-12-03 | 2010-09-01 | 新日本制铁株式会社 | Non-oriented electromagnetic steel plate having low high-frequency iron loss and process for producing the non-oriented electromagnetic steel plate |
| CN102459675A (en) * | 2009-06-03 | 2012-05-16 | 新日本制铁株式会社 | Non-oriented electromagnetic steel sheet and method for producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101700694B1 (en) | 2017-01-31 |
| EP2977480B1 (en) | 2017-07-05 |
| CN105074032A (en) | 2015-11-18 |
| KR20150109485A (en) | 2015-10-01 |
| RU2015145284A (en) | 2017-04-25 |
| JP2014185365A (en) | 2014-10-02 |
| EP2977480A1 (en) | 2016-01-27 |
| TWI551694B (en) | 2016-10-01 |
| EP2977480A4 (en) | 2016-04-13 |
| WO2014148328A1 (en) | 2014-09-25 |
| RU2650469C2 (en) | 2018-04-13 |
| TW201443248A (en) | 2014-11-16 |
| US20160076125A1 (en) | 2016-03-17 |
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