CN108474076A - Non-oriented electromagnetic steel sheet and its manufacturing method - Google Patents
Non-oriented electromagnetic steel sheet and its manufacturing method Download PDFInfo
- Publication number
- CN108474076A CN108474076A CN201680076220.XA CN201680076220A CN108474076A CN 108474076 A CN108474076 A CN 108474076A CN 201680076220 A CN201680076220 A CN 201680076220A CN 108474076 A CN108474076 A CN 108474076A
- Authority
- CN
- China
- Prior art keywords
- equal
- steel sheet
- electromagnetic steel
- oriented electromagnetic
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 81
- 239000010959 steel Substances 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 title claims description 34
- 239000002244 precipitate Substances 0.000 claims abstract description 55
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 29
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 28
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 16
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 238000000137 annealing Methods 0.000 claims description 50
- 238000001816 cooling Methods 0.000 claims description 38
- 238000005097 cold rolling Methods 0.000 claims description 23
- 239000013078 crystal Substances 0.000 claims description 14
- 229910052787 antimony Inorganic materials 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000005098 hot rolling Methods 0.000 claims description 9
- 229910052718 tin Inorganic materials 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 50
- 239000011572 manganese Substances 0.000 description 33
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 22
- 230000004907 flux Effects 0.000 description 16
- 229910052757 nitrogen Inorganic materials 0.000 description 14
- 238000007792 addition Methods 0.000 description 13
- 239000004615 ingredient Substances 0.000 description 13
- 230000005389 magnetism Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 239000010936 titanium Substances 0.000 description 10
- 150000004767 nitrides Chemical class 0.000 description 9
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 7
- -1 region Substances 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 230000005381 magnetic domain Effects 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000010583 slow cooling Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000724 energy-dispersive X-ray spectrum Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
-
- 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
-
- 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
- C21D8/1261—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Non-oriented electromagnetic steel sheet according to an embodiment of the invention includes C in terms of weight %：Less than or equal to 0.005% (except 0%), Si：1.0% to 4.0%, Al：0.15% to 1.5%, Mn：0.1% to 1.0%, P：Less than or equal to 0.2% (except 0%), N：Less than or equal to 0.005% (except 0%), S：0.001% to 0.006%, Ti：Less than or equal to 0.005% (except 0%), O：Less than or equal to 0.005% (except 0%), the Fe and other inevitable impurity of surplus, and meet following formula 1, the average-size of oxide is more than the average-size of non-oxidized substance, [formula 1] in precipitate
Description
Technical field
The present invention relates to non-oriented electromagnetic steel sheet and its manufacturing methods.
Background technology
Non-oriented electromagnetic steel sheet is used as the iron core of the electrical equipments such as rotary machines and miniature transformer such as motor, generator
Material, to determining that the efficiency of electrical equipment plays an important role.Therefore, it is needed recently as energy saving, electrical equipment miniaturization etc.
It asks, constantly requires the efficiency for improving electrical equipment, and then require to improve the characteristic of non-oriented electromagnetic steel sheet.The performance of electric steel plate
Index has iron loss and magnetic flux density, and iron loss is the smaller the better, and the higher the better for magnetic flux density.It is encouraged this is because being powered to iron core
When magnetic field, the iron loss the low more can reduce the energy lost by fever, and the magnetic flux density the high more can be swashed with identical energy
Encourage the magnetic field of bigger.Therefore, in order to cope with the increase in demand of energy-saving and environmental protection product, need to research and develop that iron loss is low, magnetic flux density is high
Non-oriented electromagnetic steel sheet manufacturing technology.
Typical method as iron loss in the magnetic property for improving non-oriented electromagnetic steel sheet substantially there are two types of:First, reducing
Thickness, second is that the big elements of resistivity such as Si, Al are added.However, for the method for reduced thickness, thickness depends on the spy of product
Property, the thickness the thin to have that productivity declines and cost increases.Subtracted by increasing the resistivity of general material
There is also following problems for the method for few iron loss, the i.e. method of the big elements Si of addition resistivity, Al, Mn etc.：It is first when alloy is added
When plain, although iron loss is reduced, since saturation flux density is reduced, also unavoidable magnetic flux density is reduced.In addition, when Si is added
When amount is more than or equal to 4%, processability, which can decline, causes cold rolling to become difficult, and productivity can decline, and Al, Mn etc. are also to be added
Amount is more, and rolling property also more declines, and hardness increase, processability can also be caused also to reduce.Therefore, it is necessary to a kind of technologies most appropriate
In the range of these elements are added, to reduce cost and improve magnetism.
In addition, the inevitable mixed impurity element such as the addition element such as Fe, Si, Al, Mn and C, S, N, O, Ti in steel
In conjunction with and form fine precipitate, to inhibit grain growth and magnetic domain is interfered to migrate, and then magnetic property is caused to decline.These
Precipitate in steel has carbide, nitride, sulfide and oxide etc..These compounds can individually occur or combine
It is existing.These fine compounds are divided into field trash or precipitate according to size or Crack cause, and field trash is more than because of size
100nm will not have a significant impact to grain growth, and the precipitate less than 100nm can inhibit grain growth.
These precipitates more minor amount is more, due to inhibiting magnetic domain migration or grain growth, it is important that make precipitate
Become large-sized or formed two or more miscible precipitates.
Invention content
Technical problem
A kind of non-oriented electromagnetic steel sheet of one embodiment of the present of invention offer and its manufacturing method, limitation alloy be added
Amount of element keeps precipitate growth larger, to make magnetic domain be easy migration in grain growth and magnetic history, to improve magnetism.
Technical solution
Non-oriented electromagnetic steel sheet according to an embodiment of the invention includes C in terms of weight %：It is less than or equal to
0.005% (except 0%), Si：1.0% to 4.0%, Al：0.15% to 1.5%, Mn：0.1% to 1.0%, P：It is less than or equal to
0.2% (except 0%), N：Less than or equal to 0.005% (except 0%), S：0.001% to 0.006%, Ti：It is less than or equal to
0.005% (except 0%), O：Less than or equal to 0.005% (except 0%), the Fe and other inevitable impurity of surplus, and
Meet following formula 1, the average-size of oxide is more than the average-size of non-oxidized substance in precipitate.
[formula 1]
In formula 1, [Si], [Al] and [Mn] indicates the content (weight %) of Si, Al and Mn respectively.
Oxide quantity can be more than non-oxidized substance in precipitate.
It also may include following component：Sn and Sb is individually or joint includes 0.01 weight % to 0.2 weight %.
The quantity of FeO or the precipitate containing FeO can be more than or equal to 40% in precipitate.
Average crystal grain grain size can be 50 μm to 180 μm.
The manufacturing method of non-oriented electromagnetic steel sheet according to an embodiment of the invention, it includes following steps：By steel
Hot rolling is carried out after base heating to manufacture hot rolled plate, the steel billet includes C in terms of weight %：Less than or equal to 0.005%, (0% removes
Outside), Si：1.0% to 4.0%, Al：0.15% to 1.5%, Mn：0.1% to 1.0%, P：Less than or equal to 0.2%, (0% removes
Outside), N：Less than or equal to 0.005% (except 0%), S：0.001% to 0.006%, Ti：Less than or equal to 0.005%, (0% removes
Outside), O：Less than or equal to 0.005% (except 0%), the Fe and other inevitable impurity of surplus, and meet following formula 1；
It is cooled down after hot rolled plate is batched；Hot rolled plate is annealed and cooled down；Cold rolling is carried out to manufacture cold rolling to hot-roll annealing plate
Plate；And by cold-reduced sheet final annealing and cool down, it is carried out in cooling step more than or equal to 600 after hot rolled plate is batched
It is cooled down, hot rolled plate is annealed and is carried out in cooling step more than or equal to 600 after being remained above at DEG C equal to 30 minutes
It is cooling at DEG C to be more than or equal to 5 seconds, by cold-reduced sheet final annealing and carry out in cooling step cooling big at more than or equal to 600 DEG C
In equal to 5 seconds,
[formula 1]
In formula 1, [Si], [Al] and [Mn] indicates the content (weight %) of Si, Al and Mn respectively.
The steel billet also includes following component：Sn and Sb is individually or joint includes 0.01 weight % to 0.2 weight %.
It can be by heating steel billet to less than equal to 1200 DEG C in the step of manufacturing hot rolled plate.
It can be 600 DEG C to 800 DEG C that coiling temperature in cooling step is carried out after hot rolled plate is batched.
It can be 850 DEG C to 1150 DEG C that hot rolled plate, which is annealed, and carries out hot-roll annealing temperature in cooling step.
To hot-roll annealing plate carry out cold rolling to manufacture cold-reduced sheet the step of in, can be cold rolled to thickness be 0.1mm extremely
0.7mm。
Hot-roll annealing plate is carried out in the step of cold rolling is to manufacture cold-reduced sheet, cold rolling may include once cold rolling, intermediate annealing
And secondary cold-rolling.
It by cold-reduced sheet final annealing and carries out in cooling step, annealing soak temperature can be 850 DEG C to 1100 when annealing
℃。
The average-size of oxide can be more than the average-size of non-oxidized substance in the precipitate of manufactured electric steel plate.
Oxide quantity can be more than non-oxidized substance in precipitate.
The quantity of FeO or the precipitate containing FeO can be more than or equal to 40% in precipitate.
Average crystal grain grain size can be 50 μm to 180 μm.
Invention effect
Non-oriented electromagnetic steel sheet according to an embodiment of the invention, it is larger by making precipitate grow, it is given birth in crystal grain
Magnetic domain is set to be easy migration in long and magnetic history, so as to improve magnetism.
Specific implementation mode
Term first, second, third, etc. is for describing various parts, ingredient, region, layer and/or section, but these portions in text
Point, ingredient, region, layer and/or section should not be limited by these terms.These terms are only used to distinguish certain part, ingredient, area
Domain, layer and/or section and another part, ingredient, region, layer and/or section.Therefore, without departing from the scope of the present invention, retouch below
First part, ingredient, region, layer and/or the section stated can also be described as second part, ingredient, region, layer and/or section.
Term as used herein is only not intended to the limitation present invention for description specific embodiment.Unless in context
Another to provide apparent opposite meaning, otherwise singulative used herein is also intended to comprising plural form.It should also be appreciated that
It is that term "comprising" is not to refer specifically to a certain characteristic, field, integer, step, action, element and/or ingredient, and exclude other
Characteristic, field, integer, step, action, the presence or additional of element, ingredient and/or group.
If certain part is described as be on another part, can directly on another part or its
Between there are other parts.When certain part is described as directly on another part, there is no other parts therebetween.
Although without separately defining, the meaning of all terms (including technical terms and scientific terms) used herein with
Those skilled in the art is normally understood equivalent in meaning.For the term being defined inside dictionary, it should be interpreted have
Have the meaning consistent with relevant technical literature and content disclosed herein, without should with idealization or too formal meaning
To explain their meaning.
In addition, in the case of no specifically mentioned, % indicates that weight %, 1ppm are 0.0001 weight %.
The following detailed description of the embodiment of the present invention, so that those skilled in the art can be easy to implement the present invention.
The present invention being capable of deformation implementation in a variety of different ways, it is not limited to embodiment as described herein.
Non-oriented electromagnetic steel sheet according to an embodiment of the invention includes C in terms of weight %：It is less than or equal to
0.005% (except 0%), Si：1.0% to 4.0%, Al：0.15% to 1.5%, Mn：0.1% to 1.0%, P：It is less than or equal to
0.2% (except 0%), N：Less than or equal to 0.005% (except 0%), S：0.001% to 0.006%, Ti：It is less than or equal to
0.005% (except 0%), O：Less than or equal to 0.005% (except 0%), the Fe and other inevitable impurity of surplus, and
Meeting following formula 1, the average-size of oxide is more than the average-size of non-oxidized substance in precipitate,
[formula 1]
In formula 1, [Si], [Al] and [Mn] indicates the content (weight %) of Si, Al and Mn respectively.
In one embodiment of the invention, the especially ingredients such as Si, Al, Mn in the ingredient of non-oriented electromagnetic steel sheet are accurate
It adjusts, so that precipitate generates as big as possible, and so that precipitate joint is precipitated in order to avoid individualism, to which big precipitation be precipitated
Object.In addition, improving magnetism by making the average-size of oxide in precipitate more than the average-size of non-oxidized substance.
The element being added in one embodiment of the present of invention is Si, Mn, Al, P or Sn, Sb for being added as needed, also
The Fe of base material.In addition to this, the member of addition is known as O, C, N, S etc., these elements need to control low at content.These elements
N or C forms nitride and carbide with other elements, and Al, Mn, Si and Fe etc. form oxide and Mn and Cu and S-shaped with O
Sulphidisation, these nitride, carbide, oxide and sulfide individually generate or joint generates.
In one embodiment of the invention, make precipitate coarsening, precipitate joint is especially made to be precipitated and non-individual analysis
Go out so that more easily grow.Wherein, oxide is increased without element and can also be formed, therefore is easier to realize coarsening.Thus
It has been confirmed that the magnetism of electric steel plate is improved.
In one embodiment of the invention, oxide accounts for 50% or more of total precipitate quantity in precipitate, oxide
In especially FeO account for 40% or more.It is precipitated especially for the joint of precipitate, the influence of oxide is very big.For these oxidations
Object is precipitated although reducing O content when steelmaking operations after being remained or annealed with oxide in steel.For sulfide,
When steel billet is reheated and cooled down after hot rolling, considerable amount of sulfide is precipitated, these are precipitated with CuS, MnS or their joint
The form of object is precipitated.It is more FeO, Al however, compared with sulfide2O3、SiO2The joint precipitate of equal oxides, oxide
And the combination of nitride and carbide is relatively smaller.
In one embodiment of the invention, oxide individualism or joint exist in generated precipitate, put down
Equal size is 15nm to 70nm, and par is every 1mm2It is 10000 to 400000.In addition, non-oxidized substance in precipitate
Individualism or joint exist, and average-size is 10nm to 50nm, and par is every 1mm2It is 5000 to 200000.
In this way, by making the average-size of oxide in precipitate be more than the average-size of non-oxidized substance, crystal grain can be made
Growth becomes easy, and specifically average grain size can be made to reach 50 μm to 180 μm.At this point, crystallite dimension refers to passing through electrician
The crystallite dimension that common intercept method (intercept method) measures in steel plate field.
The reasons why limitation non-oriented electromagnetic steel sheet ingredient, is described as follows.
Si：1.0 weight % to 4.0 weight %
Silicon (Si) is the ingredient for increasing the resistivity of steel and reducing eddy-current loss in iron loss, therefore is main addition member
Element is still easy to form the element of oxide.If Si contents are very few, just it is difficult to obtain low iron loss characteristic, and if Si is added
Excessively, it is possible to cause cold rolling difficult.Therefore, 1.0 weight % be may be limited to 4.0 weight %.
Mn：0.1 weight % to 1.0 weight %
Manganese (Mn) has the effect of increasing resistivity together with Si, Al etc. and reduces iron loss, therefore Mn is at least added and is more than
Equal to 0.1 weight %, to achieve the purpose that improve iron loss.However, Mn additions more increase saturation flux density more reduce, therefore
Magnetic flux density reduces, and Mn and S in conjunction with and form fine MnS precipitates, to inhibit grain growth and domain wall is interfered to move
It moves, and then causes to be especially magnetic hystersis loss increase in iron loss.Therefore, addition is less than or equal to 1.0 weight %.
Al：0.15 weight % to 1.5 weight %
Aluminium (Al) is the element to be unavoidably added of the deoxidation in process for making for steel, is the main of increase resistivity
Element, thus it is many in order to reduce iron loss addition, but can also play the role of reducing saturation flux density.In addition, if
Al additions are very few, will form fine AlN and inhibit grain growth, may result in magnetic decline.In addition, if Al is added
Amount is excessive, will become the reason of reducing magnetic flux density.Therefore, the addition of aluminium can be limited in 0.15 weight % to 1.5
Weight %.
P：Less than or equal to 0.2 weight %
Phosphorus (P), which increases resistivity, reduces iron loss, and in cyrystal boundary segregation, is unfavorable for magnetic texture to inhibit to be formed,
And be formed with the texture { 100 } being conducive to, but if being added excessive, rolling will be reduced, thus may be limited to less than etc.
In 0.2 weight %.
C：Less than or equal to 0.005 weight %
If very much, inhibition iron element when will expand austenite region and increase phase change zone, and anneal is added in carbon (C)
The grain growth of body, and then improve iron loss.In addition, carbon (C) and Ti etc. in conjunction with and forming carbide leads to magnetic variation, when final
Product is processed into after electric equipment products in use, improving iron loss because of magnetic aging.Therefore, it can limit less than or equal to 0.005 weight
Measure %.
N：Less than or equal to 0.005 weight %
Nitrogen (N) is to be combined with the strength such as Al, Ti and form the element that nitride inhibits grain growth etc. to be unfavorable for magnetism, excellent
Choosing contains nitrogen on a small quantity.Therefore, it may be limited to less than or equal to 0.005 weight %.
S：0.001 weight % to 0.006 weight %
Sulphur (S) is the element to form MnS, the CuS for being unfavorable for magnetic property and (Cu, Mn) S sulfides, and the amount of being preferably added to is most
It may be low.But if addition is very few, it is unfavorable for texture instead and is formed, may result in magnetic decline.In addition, if being added
Excessively, then magnetic variation may result in due to the increase of fine sulfide.Therefore, it may be limited to 0.001 weight % extremely
0.006 weight %.
Ti：Less than or equal to 0.005 weight %
Titanium (Ti) can form fine carbide and nitride and inhibit grain growth, be added more increased carbide and
Nitride causes texture to be also deteriorated, and in turn results in magnetic variation.Therefore, it may be limited to less than or equal to 0.005 weight %.
O：Less than or equal to 0.005 weight %
Oxygen (O) can form various oxides and inhibit grain growth, it is possible to keep content as low as possible.Therefore, it can limit
System is less than or equal to 0.005 weight %.
Sn、Sb：0.01 weight % to 0.2 weight %
Tin (Sn) and antimony (Sb) they are cyrystal boundary segregation elements, and the diffusion for the nitrogen that these elements inhibit through crystal boundary is added, and
Inhibit to be unfavorable for magnetic { 111 } texture, increase advantageous { 100 } texture, to improve magnetic property, if Sn and Sb are individually
It is excessive that excessive or total addition is added, grain growth will be inhibited, may result in magnetic reduction, rolling property is deteriorated.Cause
This can respectively addition or total addition be limited in 0.01 weight % to 0.2 weight by Sn and Sb when comprising Sn or Sb
Measure %.
In particular, in one embodiment of the invention, Si, Mn, Al are adjusted to meet following formula 1, with Mn to contain
The condition that amount is not high, Si contents are high includes also considerable amount of Al, to inhibit AlN etc..
[formula 1]
In formula 1, [Si], [Al] and [Mn] indicates the content (weight %) of Si, Al and Mn respectively.
The manufacturing method of non-oriented electromagnetic steel sheet according to an embodiment of the invention, it includes following steps：By steel
Hot rolling is carried out after base heating to manufacture hot rolled plate, the steel billet includes C in terms of weight %：Less than or equal to 0.005%, (0% removes
Outside), Si：1.0% to 4.0%, Al：0.15% to 1.5%, Mn：0.1% to 1.0%, P：Less than or equal to 0.2%, (0% removes
Outside), N：Less than or equal to 0.005% (except 0%), S：0.001% to 0.006%, Ti：Less than or equal to 0.005%, (0% removes
Outside), O：Less than or equal to 0.005% (except 0%), the Fe and other inevitable impurity of surplus, and meet following formula 1；
It is cooled down after hot rolled plate is batched；Hot rolled plate is annealed and cooled down；Cold rolling is carried out to manufacture cold rolling to hot-roll annealing plate
Plate；And by cold-reduced sheet final annealing and cool down, it is carried out in cooling step more than or equal to 600 after hot rolled plate is batched
It is cooled down, hot rolled plate is annealed and is carried out in cooling step more than or equal to 600 after being remained above at DEG C equal to 30 minutes
It is cooling at DEG C to be more than or equal to 5 seconds, by cold-reduced sheet final annealing and carry out in cooling step cooling big at more than or equal to 600 DEG C
In equal to 5 seconds.
In one embodiment of the invention, implement cooling after manufacture hot rolled plate, after hot rolled plate annealing, after cold-reduced sheet annealing
When, it is slowly cooled down, so as to the time for thering is precipitate to grow, to improve magnetism.
Technique is illustrated below as each step.
First, hot rolling will be carried out after heating steel billet, to manufacture hot rolled plate.Limit each component additional proportion the reasons why with
The component limitation reason of non-oriented electromagnetic steel sheet above-mentioned is identical.It is moved back in following hot rollings, hot rolled plate annealing, cold rolling, recrystallization
The component of steel billet is substantially without changing during fire is equal, therefore the component of steel billet and the component of non-oriented electromagnetic steel sheet are real
It is identical in matter.
Steel billet can be packed into heating furnace to be heated to being less than or equal to 1200 DEG C.If heating temperature is excessively high, deposited in steel billet
The precipitates such as AlN, MnS be dissolved again after, when hot rolling, is precipitated fine precipitate and inhibits grain growth, may result in magnetism
Decline.More specifically, can be heated at 1050 DEG C to 1200 DEG C.
Hot rolling is carried out to the steel billet after heating and is manufactured into the hot rolled plate that thickness is 1.4mm to 3mm.In hot rolling, in finish rolling
Finish to gauge be to terminate in ferritic phase, in order to correct plate shape with less than or equal to 20% final reduction ratio implement.
Next, being cooled down after hot rolled plate is batched.Hot rolled plate batches at a temperature of 600 DEG C to 800 DEG C, and
In air or it is put into other stove and is cooled down.Temperature setting when cooling is at least can be at more than or equal to 600 DEG C
Kept for 30 or more minutes.If temperature is too low or the retention time is short, precipitate is difficult to grow, and fine precipitation may be precipitated
Object.More specifically, can be kept for 30 minutes to 3 hours at a temperature of 600 DEG C to 800 DEG C.
Next, being cooled down after hot rolled plate is annealed.It in order to improve magnetism, anneals to hot rolled plate, hot rolled plate moves back
Fiery temperature is 850 DEG C to 1150 DEG C.If hot-roll annealing temperature is too low, it is insufficient to may result in grain growth.If hot
Roll that plate annealing temperature is excessively high, then crystal grain is excessively grown, the surface defect that may result in plate increases.
After hot rolled plate annealing, when implementing cooling, be not quickly cooled down, but kept at more than or equal to 600 DEG C 5 seconds with
On.When implementing cooling, if temperature is too low or the retention time is short, precipitate is difficult to coarsening, it is also possible to cause plate
It bent.More specifically, when implementing cooling, temperature can be 600 DEG C to 800 DEG C, and can keep 5 seconds to 30 seconds.
After hot rolled plate annealing, pickling can also be implemented.
Next, cold rolling is carried out to hot-roll annealing plate, to manufacture cold-reduced sheet.For cold rolling, being finally rolled into thickness is
0.1mm to 0.7mm, can implement once cold rolling, intermediate annealing, secondary cold-rolling when necessary, and final reduction ratio can be 50% to 95%.
Next, implementing to cool down after carrying out final annealing to cold-reduced sheet.In the technique annealed to cold-reduced sheet, annealing
When cold-reduced sheet annealing soaking temperature be 850 DEG C to 1100 DEG C.Cold-reduced sheet annealing temperature be less than or equal to 850 DEG C at grain growth not
Foot increases so as to cause magnetic texture i.e. { 111 } texture is unfavorable for, and crystal grain is excessively grown at more than or equal to 1100 DEG C,
Harmful effect may be generated to magnetism, therefore the soaking temperature of cold-reduced sheet is limited to 850 DEG C to 1100 DEG C.
After cold-reduced sheet annealing, when implementing cooling, be not quickly cooled down, but kept at more than or equal to 600 DEG C 5 seconds with
On.When implementing cooling, if temperature is too low or the retention time is short, fine precipitate can individually be precipitated.More specifically,
When implementing cooling, temperature can be 600 DEG C to 800 DEG C, and can keep 5 seconds to 30 seconds.
Delivery is to client company after annealed sheet implements insulation film process.The insulating film can use organic matter, inanimate matter or
Organic/inorganic compound film is handled, and can also be handled with other film forming agents that can be insulated.Client company can be by steel plate
It is directly used after processing.
The present invention is described in further detail below by embodiment.However, following embodiments are only intended to illustrate the present invention,
The present invention is not limited to following embodiments.
Embodiment 1
The bloom with component shown in following Tables 1 and 2 is manufactured by vacuum melting, to which the amount of Si, Al, Mn be made
(weight %) meets the invention steel A1 to A7 of formula 1 and is unsatisfactory for the compared steel A8 to A12 of formula 1.
Vacuum melting steel A1 to A7 is Si, Al, Mn content with made of the scope of the present invention, by each bloom at 1120 DEG C
Under heated, and be rolled into thickness be 2.2mm after batch, batched after Slow cooling in an atmosphere as shown in table 2, cooling heat
Rolled steel plate is annealed 5 minutes in a nitrogen environment, is then more than or equal at a temperature of 600 DEG C in the environment of nitrogen and oxygen coexist
Slow cooling, finally watering are quickly cooled down.Pickling is implemented to the hot rolled plate of annealing, it is 0.35mm, cold rolling to be then cold rolled to thickness
The final annealing of plate is annealed 2 minutes under the hybird environment of 30% hydrogen and 70% nitrogen.Cooling section is in 40% hydrogen and nitrogen
It is cooled down under environment.For final annealing plate, for each sample investigated oxide, sulfide, carbide, nitride and
The size and quantity of its miscible precipitate measure crystal grain and magnetism and arrange in the following table 3.
It is used as size, type and the method for distribution for analyzing precipitate and the carbon replica extracted from sample is used
Tem observation and the method analyzed with EDS.Tem observation is analysed by EDS spectrum analyses with having no bias for randomly selected region
Go out the type of object.
For iron loss (W15/50), determine under 50Hz frequencies encourage 1.5Tesla magnetic flux density when rolling direction and roll
The average loss (W/kg) of direction vertical direction processed.
For magnetic flux density (B50), determine the size of the magnetic flux density encouraged when the magnetic field for applying 5000A/m
(Tesla)。
【Table 1】
| Classification | C | Si | Al | Mn | P | S | N | Ti | Sn | Sb |
| A1 | 0.0025 | 1.56 | 0.25 | 0.42 | 0.031 | 0.0024 | 0.0014 | 0.0002 | 0.026 | 0.012 |
| A2 | 0.0028 | 2.64 | 0.22 | 0.4 | 0.036 | 0.0021 | 0.0021 | 0.0015 | 0.019 | 0 |
| A3 | 0.0025 | 2.82 | 0.82 | 0.8 | 0.045 | 0.0028 | 0.0014 | 0.0017 | 0 | 0 |
| A4 | 0.0022 | 2.95 | 0.78 | 0.62 | 0.055 | 0.0021 | 0.0012 | 0.0016 | 0 | 0 |
| A5 | 0.0025 | 2.82 | 1.3 | 0.45 | 0.032 | 0.0015 | 0.0025 | 0.0011 | 0 | 0.031 |
| A6 | 0.0028 | 2.91 | 0.32 | 0.52 | 0.031 | 0.0018 | 0.0021 | 0.0011 | 0.024 | 0.021 |
| A7 | 0.0022 | 3.3 | 0.25 | 0.4 | 0.035 | 0.0032 | 0.0026 | 0.0015 | 0.036 | 0.015 |
| A8 | 0.0021 | 0.52 | 0.002 | 0.45 | 0.031 | 0.0024 | 0.0014 | 0.0002 | 0.026 | 0.012 |
| A9 | 0.0026 | 1.43 | 0.25 | 0.62 | 0.045 | 0.0001 | 0.0015 | 0.0019 | 0.025 | 0.031 |
| A10 | 0.0023 | 2.24 | 0.12 | 0.72 | 0.055 | 0.0032 | 0.0018 | 0.0021 | 0 | 0.019 |
| A11 | 0.0027 | 2.51 | 0.45 | 0.9 | 0.023 | 0.0035 | 0.0021 | 0.0021 | 0.035 | 0 |
| A12 | 0.0029 | 2.96 | 0.74 | 1.3 | 0.019 | 0.0019 | 0.0019 | 0.0025 | 0.043 | 0 |
【Table 2】
【Table 3】
As shown in table 1 to table 3, A1 to A7 meets the compositional range and formula 1 of electric steel plate, the size of oxide in precipitate
More than the size of non-oxidized substance, crystal grain also grows very well, and iron loss and magnetic flux density are also excellent.In contrast, A8 to A12 does not have
Meet the compositional range and formula 1 of electric steel plate, a portion is that the size of oxide in precipitate is less than the ruler of non-oxidized substance
It is very little.Therefore, iron loss and magnetic flux density are poor.
Embodiment 2
The bloom with the component as shown in the following table 4 and table 5 is manufactured by vacuum melting, to which the amount of Si, Al, Mn be made
(weight %) meets the invention steel A13 to A15 of formula 1.
Each bloom is heated at 1120 DEG C, and is rolled into after thickness is 2.2mm and batches, as shown in table 5 big
It is batched after Slow cooling in gas, cooling hot rolled steel plate is annealed 5 minutes in a nitrogen environment, is then coexisted in nitrogen and oxygen
Slow cooling at a temperature of being more than or equal to 600 DEG C under environment, finally watering are quickly cooled down.Pickling is implemented to the hot rolled plate of annealing,
Then it is 0.35mm to be cold rolled to thickness, and the final annealing of cold-reduced sheet anneals 2 under the hybird environment of 30% hydrogen and 70% nitrogen
Minute.Cooling section is cooled down under 40% hydrogen and nitrogen environment.For final annealing plate, oxygen has been investigated for each sample
The size and quantity of compound, sulfide, carbide, nitride and its miscible precipitate measure crystal grain and magnetism and arrange under
In table 6.
【Table 4】
| Classification | C | Si | Al | Mn | P | S | N | Ti | Sn | Sb |
| A13 | 0.0035 | 2.12 | 0.31 | 0.2 | 0.032 | 0.0044 | 0.0025 | 0.0013 | 0 | 0.035 |
| A14 | 0.0024 | 2.52 | 0.26 | 0.21 | 0.043 | 0.0022 | 0.0029 | 0.0011 | 0.041 | 0 |
| A15 | 0.0021 | 3.12 | 0.51 | 0.8 | 0.045 | 0.0045 | 0.0022 | 0.0009 | 0.031 | 0 |
【Table 5】
【Table 6】
As shown in table 4 to table 6, compared with compared steel, invention steel has given sufficient cooling time after batching, by hot rolled plate
And after cold-reduced sheet annealing, sufficient time, therefore the oxide that FeO oxides are included are given at more than or equal to 600 DEG C
It is smoothly formed, grain growth obtains very well, magnetic excellent.
In contrast, 6 hot-roll annealing temperature of compared steel is low, and the retention time is short at more than or equal to 600 DEG C when cooling, analysis
Go out oxide in object size is small and quantity is also few.Compared steel 7 and hot rolled plate annealing postcooling time are short, therefore in precipitate
The size of oxide is relatively small compared with non-oxidized substance and quantity is few, and the ratio of FeO oxides is relatively low again smaller than equal to 40%.It is right
Water cooling is carried out than steel 8 after batching to be quickly cooled down, cooling time is short at more than or equal to 600 DEG C after hot rolled plate annealing, cold-reduced sheet
The annealing postcooling time is also short, therefore the formation for the oxide that FeO is included in precipitate is insufficient, and then causes iron loss opposite
High and magnetic flux density is low.Although compared steel 9 be also meet ingredient, coiling temperature is low, hot rolled plate annealing postcooling when anneal
Time is short, therefore the oxides that are included of FeO are individually or the size of miscible precipitate is small, and quantity is also less than non-oxide
Object, so the size of crystal grain is also small, it is magnetic low.Compared steel 10 is quickly cooled down after batching in water, is shortened together with compared steel 11
Cooling time after hot rolled plate and cold-reduced sheet annealing, FeO ratios are low in result precipitate, oxide formed it is less, therefore
Crystal grain is small, magnetic insufficient.
The present invention can implement to be not limited to embodiment in a variety of different ways, and those of ordinary skill in the art can be with
The present invention can be implemented in the case where not changing the technical concept or essential feature of the present invention by other concrete modes by understanding.
It will therefore be appreciated that the above embodiments are exemplary, rather than for limiting the present invention's.
Claims (17)
1. a kind of non-oriented electromagnetic steel sheet, it is characterised in that：
The steel plate includes C in terms of weight %：Less than or equal to 0.005% (except 0%), Si：1.0% to 4.0%, Al：
0.15% to 1.5%, Mn：0.1% to 1.0%, P：Less than or equal to 0.2% (except 0%), N：Less than or equal to 0.005% (0%
Except), S：0.001% to 0.006%, Ti：Less than or equal to 0.005% (except 0%), O：Less than or equal to 0.005%, (0% removes
Outside), the Fe of surplus and other inevitable impurity, and meet following formula 1,
The average-size of oxide is more than the average-size of non-oxidized substance in precipitate,
[formula 1]
In formula 1, [Si], [Al] and [Mn] indicates the content (weight %) of Si, Al and Mn respectively.
2. non-oriented electromagnetic steel sheet according to claim 1, it is characterised in that：
Oxide quantity is more than non-oxidized substance in the precipitate.
3. non-oriented electromagnetic steel sheet according to claim 1, it is characterised in that：
The steel plate also includes following component：Sn and Sb is individually or joint includes 0.01 weight % to 0.2 weight %.
4. non-oriented electromagnetic steel sheet according to claim 1, it is characterised in that：
The quantity of FeO or the precipitate containing FeO is more than or equal to 40% in precipitate.
5. non-oriented electromagnetic steel sheet according to claim 1, it is characterised in that：
Average crystal grain grain size is 50 μm to 180 μm.
6. a kind of manufacturing method of non-oriented electromagnetic steel sheet, it is characterised in that comprise the steps of：
Hot rolling will be carried out after heating steel billet to manufacture hot rolled plate, the steel billet includes C in terms of weight %：Less than or equal to 0.005%
(except 0%), Si：1.0% to 4.0%, Al：0.15% to 1.5%, Mn：0.1% to 1.0%, P：Less than or equal to 0.2%
(except 0%), N：Less than or equal to 0.005% (except 0%), S：0.001% to 0.006%, Ti：Less than or equal to 0.005%
(except 0%), O：Less than or equal to 0.005% (except 0%), the Fe and other inevitable impurity of surplus, and under satisfaction
State formula 1；
It is cooled down after the hot rolled plate is batched；
The hot rolled plate is annealed and cooled down；
Cold rolling is carried out to manufacture cold-reduced sheet to hot-roll annealing plate；And
By the cold-reduced sheet final annealing and cool down,
It carries out in cooling step being remained above at more than or equal to 600 DEG C after the hot rolled plate is batched laggard equal to 30 minutes
Row cooling,
The hot rolled plate is annealed and cooled down at more than or equal to 600 DEG C in cooling step and is more than or equal to 5 seconds,
By the cold-reduced sheet final annealing and carry out in cooling step it is cooling at more than or equal to 600 DEG C be more than or equal to 5 seconds,
[formula 1]
In formula 1, [Si], [Al] and [Mn] indicates the content (weight %) of Si, Al and Mn respectively.
7. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 6, it is characterised in that：
The steel billet also includes following component：Sn and Sb is individually or joint includes 0.01 weight % to 0.2 weight %.
8. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 6, it is characterised in that：
In the manufacture hot rolled plate the step of, by the heating steel billet to less than it is equal to 1200 DEG C.
9. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 6, it is characterised in that：
It is 600 DEG C to 800 DEG C that coiling temperature in cooling step is carried out after the hot rolled plate is batched.
10. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 6, it is characterised in that：
It is 850 DEG C to 1150 DEG C that the hot rolled plate, which is annealed, and carries out hot-roll annealing temperature in cooling step.
11. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 6, it is characterised in that：
The hot-roll annealing plate is carried out in the step of cold rolling is to manufacture cold-reduced sheet, it is 0.1mm to 0.7mm to be cold rolled to thickness.
12. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 6, it is characterised in that：
It is described to hot-roll annealing plate carry out cold rolling to manufacture cold-reduced sheet the step of in, the cold rolling include once cold rolling, centre
Annealing and secondary cold-rolling.
13. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 6, it is characterised in that：
It by the cold-reduced sheet final annealing and carries out in cooling step, annealing soak temperature is 850 DEG C to 1100 DEG C when annealing.
14. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 6, it is characterised in that：
The average-size of oxide is more than the average-size of non-oxidized substance in the precipitate of manufactured electric steel plate.
15. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 14, it is characterised in that：
Oxide quantity is more than non-oxidized substance in the precipitate.
16. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 14, it is characterised in that：
The quantity of FeO or the precipitate containing FeO is more than or equal to 40% in precipitate.
17. the manufacturing method of non-oriented electromagnetic steel sheet according to claim 14, it is characterised in that：
Average crystal grain grain size is 50 μm to 180 μm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2015-0185425 | 2015-12-23 | ||
| KR1020150185425A KR102175064B1 (en) | 2015-12-23 | 2015-12-23 | Non-orientied electrical steel sheet and method for manufacturing the same |
| PCT/KR2016/015226 WO2017111549A1 (en) | 2015-12-23 | 2016-12-23 | Non-oriented electrical steel sheet and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108474076A true CN108474076A (en) | 2018-08-31 |
Family
ID=59089606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680076220.XA Pending CN108474076A (en) | 2015-12-23 | 2016-12-23 | Non-oriented electromagnetic steel sheet and its manufacturing method |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190017137A1 (en) |
| JP (1) | JP7008021B2 (en) |
| KR (1) | KR102175064B1 (en) |
| CN (1) | CN108474076A (en) |
| WO (1) | WO2017111549A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112143964A (en) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate with extremely low iron loss and continuous annealing process thereof |
| CN112143963A (en) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate with excellent magnetic property and continuous annealing method thereof |
| CN112143962A (en) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate with high magnetic induction and low iron loss and manufacturing method thereof |
| CN112143961A (en) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate with excellent magnetic property and continuous annealing method thereof |
| WO2021037063A1 (en) * | 2019-08-26 | 2021-03-04 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate and manufacturing method therefor |
| CN113574194A (en) * | 2019-03-20 | 2021-10-29 | 日本制铁株式会社 | Non-oriented electromagnetic steel sheet |
| CN115176044A (en) * | 2019-12-20 | 2022-10-11 | Posco公司 | Non-oriented electrical steel sheet and method for manufacturing the same |
| RU2792272C1 (en) * | 2019-08-26 | 2023-03-21 | Баошань Айрон Энд Стил Ко., Лтд. | Sheet from non-oriented electrical steel and method for its manufacture |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102043289B1 (en) | 2017-12-26 | 2019-11-12 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
| KR102178341B1 (en) * | 2018-11-30 | 2020-11-12 | 주식회사 포스코 | Non-oriented electrical steel sheet having superior magneticproperties and method for manufacturing the same |
| EP4063534A4 (en) | 2019-11-21 | 2022-12-28 | Nippon Steel Corporation | Non-oriented electromagnetic steel sheet and method for producing same |
| KR102468078B1 (en) * | 2020-12-21 | 2022-11-16 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
| KR20240012071A (en) * | 2022-07-20 | 2024-01-29 | 현대제철 주식회사 | Non-oriented electrical steel sheet and method for manufacturing the same |
| WO2024070489A1 (en) * | 2022-09-30 | 2024-04-04 | 日本製鉄株式会社 | Non-oriented electromagnetic steel sheet and method for manufacturing non-oriented electromagnetic steel sheet |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0841538A (en) * | 1994-07-26 | 1996-02-13 | Kawasaki Steel Corp | Production of low core loss nonoriented silicon steel sheet small in magnetic anisotropy |
| JPH1088298A (en) * | 1996-09-19 | 1998-04-07 | Nkk Corp | Nonoriented silicon steel sheet |
| JP2000008147A (en) * | 1998-06-24 | 2000-01-11 | Sumitomo Metal Ind Ltd | Nonoriented silicon steel sheet excellent in magnetic characteristic and its production |
| CN1851023A (en) * | 2006-05-18 | 2006-10-25 | 武汉科技大学 | Low-carbon high-manganese oriented electrical steel plate, and its manufacturing method |
| CN102199721A (en) * | 2010-03-25 | 2011-09-28 | 宝山钢铁股份有限公司 | High-silicon non-oriented cold-rolled sheet, and manufacture method thereof |
| JP4790151B2 (en) * | 2001-05-31 | 2011-10-12 | 新日本製鐵株式会社 | Non-oriented electrical steel sheet with extremely excellent iron loss and magnetic flux density and method for producing the same |
| CN102453838A (en) * | 2010-10-25 | 2012-05-16 | 宝山钢铁股份有限公司 | High-strength non-oriented electrical steel with high magnetic induction and manufacturing method thereof |
| CN102650016A (en) * | 2012-05-24 | 2012-08-29 | 宝山钢铁股份有限公司 | Manufacturing method for high-magnetic induction low-cost 250 MPa cold-rolled magnetic pole steel |
| JP5098430B2 (en) * | 2007-05-17 | 2012-12-12 | 新日鐵住金株式会社 | Non-oriented electrical steel sheet excellent in punching workability and iron loss and manufacturing method |
| CN103534376A (en) * | 2011-08-18 | 2014-01-22 | 新日铁住金株式会社 | Non-oriented electromagnetic steel sheet, method for producing same, laminate for motor iron core, and method for producing said laminate |
| CN103687974A (en) * | 2012-01-05 | 2014-03-26 | 蒂森克虏伯钢铁欧洲股份公司 | Non-grain-oriented electrical steel strip or sheet, component produced therefrom, and method for producing a non-grain-oriented electrical steel strip or sheet |
| CN103930583A (en) * | 2011-11-11 | 2014-07-16 | 新日铁住金株式会社 | Anisotropic electromagnetic steel sheet and method for producing same |
| CN104674136A (en) * | 2013-11-28 | 2015-06-03 | Posco公司 | Non-oriented electrical steel sheet excellent in magnetic permeability and method for manufacturing the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19930519C1 (en) * | 1999-07-05 | 2000-09-14 | Thyssenkrupp Stahl Ag | Non-textured electrical steel sheet, useful for cores in rotary electrical machines such as motors and generators, is produced by multi-pass hot rolling mainly in the two-phase austenite-ferrite region |
| KR20140058935A (en) * | 2012-11-07 | 2014-05-15 | 주식회사 포스코 | Non-oriented electrical steel sheets and method for manufacturing the same |
| PL2985360T3 (en) * | 2013-04-09 | 2018-12-31 | Nippon Steel & Sumitomo Metal Corporation | Non-oriented magnetic steel sheet and method for producing same |
| KR101634092B1 (en) * | 2015-10-27 | 2016-06-28 | 주식회사 포스코 | Non-oriented electrical steel sheet and manufacturing method for the same |
-
2015
- 2015-12-23 KR KR1020150185425A patent/KR102175064B1/en active IP Right Grant
-
2016
- 2016-12-23 CN CN201680076220.XA patent/CN108474076A/en active Pending
- 2016-12-23 JP JP2018532686A patent/JP7008021B2/en active Active
- 2016-12-23 US US16/065,788 patent/US20190017137A1/en not_active Abandoned
- 2016-12-23 WO PCT/KR2016/015226 patent/WO2017111549A1/en active Application Filing
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0841538A (en) * | 1994-07-26 | 1996-02-13 | Kawasaki Steel Corp | Production of low core loss nonoriented silicon steel sheet small in magnetic anisotropy |
| JPH1088298A (en) * | 1996-09-19 | 1998-04-07 | Nkk Corp | Nonoriented silicon steel sheet |
| JP2000008147A (en) * | 1998-06-24 | 2000-01-11 | Sumitomo Metal Ind Ltd | Nonoriented silicon steel sheet excellent in magnetic characteristic and its production |
| JP4790151B2 (en) * | 2001-05-31 | 2011-10-12 | 新日本製鐵株式会社 | Non-oriented electrical steel sheet with extremely excellent iron loss and magnetic flux density and method for producing the same |
| CN1851023A (en) * | 2006-05-18 | 2006-10-25 | 武汉科技大学 | Low-carbon high-manganese oriented electrical steel plate, and its manufacturing method |
| JP5098430B2 (en) * | 2007-05-17 | 2012-12-12 | 新日鐵住金株式会社 | Non-oriented electrical steel sheet excellent in punching workability and iron loss and manufacturing method |
| CN102199721A (en) * | 2010-03-25 | 2011-09-28 | 宝山钢铁股份有限公司 | High-silicon non-oriented cold-rolled sheet, and manufacture method thereof |
| CN102453838A (en) * | 2010-10-25 | 2012-05-16 | 宝山钢铁股份有限公司 | High-strength non-oriented electrical steel with high magnetic induction and manufacturing method thereof |
| CN103534376A (en) * | 2011-08-18 | 2014-01-22 | 新日铁住金株式会社 | Non-oriented electromagnetic steel sheet, method for producing same, laminate for motor iron core, and method for producing said laminate |
| CN103930583A (en) * | 2011-11-11 | 2014-07-16 | 新日铁住金株式会社 | Anisotropic electromagnetic steel sheet and method for producing same |
| CN103687974A (en) * | 2012-01-05 | 2014-03-26 | 蒂森克虏伯钢铁欧洲股份公司 | Non-grain-oriented electrical steel strip or sheet, component produced therefrom, and method for producing a non-grain-oriented electrical steel strip or sheet |
| CN102650016A (en) * | 2012-05-24 | 2012-08-29 | 宝山钢铁股份有限公司 | Manufacturing method for high-magnetic induction low-cost 250 MPa cold-rolled magnetic pole steel |
| CN104674136A (en) * | 2013-11-28 | 2015-06-03 | Posco公司 | Non-oriented electrical steel sheet excellent in magnetic permeability and method for manufacturing the same |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113574194A (en) * | 2019-03-20 | 2021-10-29 | 日本制铁株式会社 | Non-oriented electromagnetic steel sheet |
| CN112143964A (en) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate with extremely low iron loss and continuous annealing process thereof |
| CN112143963A (en) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate with excellent magnetic property and continuous annealing method thereof |
| CN112143962A (en) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate with high magnetic induction and low iron loss and manufacturing method thereof |
| CN112143961A (en) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate with excellent magnetic property and continuous annealing method thereof |
| WO2021037063A1 (en) * | 2019-08-26 | 2021-03-04 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate and manufacturing method therefor |
| RU2792272C1 (en) * | 2019-08-26 | 2023-03-21 | Баошань Айрон Энд Стил Ко., Лтд. | Sheet from non-oriented electrical steel and method for its manufacture |
| CN115176044A (en) * | 2019-12-20 | 2022-10-11 | Posco公司 | Non-oriented electrical steel sheet and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7008021B2 (en) | 2022-01-25 |
| US20190017137A1 (en) | 2019-01-17 |
| KR20170075592A (en) | 2017-07-03 |
| KR102175064B1 (en) | 2020-11-05 |
| WO2017111549A1 (en) | 2017-06-29 |
| JP2019508574A (en) | 2019-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108474076A (en) | Non-oriented electromagnetic steel sheet and its manufacturing method | |
| KR101963056B1 (en) | Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet | |
| KR101407009B1 (en) | Manufacture method of high efficiency non-oriented silicon steel having good magnetic performance | |
| KR101070064B1 (en) | Process for producing grain-oriented magnetic steel sheet with high magnetic flux density | |
| JP4840518B2 (en) | Method for producing grain-oriented electrical steel sheet | |
| TWI642795B (en) | Manufacturing method of non-oriented electromagnetic steel plate | |
| KR101062127B1 (en) | Method for manufacturing directional electromagnetic steel sheet with high magnetic flux density | |
| KR102260531B1 (en) | Hot-rolled steel sheet for grain-oriented electrical steel sheet and method of producing same, and method of producing grain-oriented electrical steel sheet | |
| CN110114489B (en) | Non-oriented electrical steel sheet and method for manufacturing the same | |
| KR20210082516A (en) | Non-oriented electrical steel sheet and its manufacturing method | |
| KR101693522B1 (en) | Grain oriented electrical steel having excellent magnetic properties and method for manufacturing the same | |
| CN104039998A (en) | Non-oriented magnetic steel sheet and method for manufacturing same | |
| CN108474077B (en) | Oriented electrical steel sheet and method for manufacturing the same | |
| KR20180011809A (en) | Method for manufacturing non-oriented electromagnetic steel sheet with excellent magnetic properties | |
| WO2017105112A1 (en) | Annealing separator for oriented electrical steel sheet, oriented electrical steel sheet, and manufacturing method of oriented electrical steel sheet | |
| JP2004353036A (en) | Method for manufacturing grain-oriented electromagnetic steel sheet superior in magnetic property | |
| EP3888808A1 (en) | Manufacturing method for non-oriented magnetic steel sheet | |
| KR101703071B1 (en) | Non-oriented electrical steel sheet and method for manufacturing the same | |
| JP6950748B2 (en) | Manufacturing method of non-oriented electrical steel sheet | |
| TWI832561B (en) | Manufacturing method of hot-rolled steel plate for non-oriented electromagnetic steel plate and manufacturing method of non-oriented electromagnetic steel plate | |
| KR20240098445A (en) | Non-oriented electrical steel sheet and method for manufacturing the same | |
| KR20240098446A (en) | Non-oriented electrical steel sheet and method for manufacturing the same | |
| CN118318053A (en) | Method for producing hot-rolled steel sheet for non-oriented electrical steel sheet, and method for producing non-oriented electrical steel sheet | |
| KR20240098506A (en) | Silicon diffusing composition, non-oriented electrical steel sheet and method for manufacturing the same | |
| KR20210057452A (en) | Non-oriented electrical steel sheet and method of manufactruing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180831 |
|
| WD01 | Invention patent application deemed withdrawn after publication |