CN106282761A - A kind of silicon steel, preparation method and application - Google Patents
A kind of silicon steel, preparation method and application Download PDFInfo
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- CN106282761A CN106282761A CN201610630625.5A CN201610630625A CN106282761A CN 106282761 A CN106282761 A CN 106282761A CN 201610630625 A CN201610630625 A CN 201610630625A CN 106282761 A CN106282761 A CN 106282761A
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- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 128
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910052796 boron Inorganic materials 0.000 claims abstract description 26
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 35
- 238000000137 annealing Methods 0.000 claims description 27
- 238000013000 roll bending Methods 0.000 claims description 27
- 238000005098 hot rolling Methods 0.000 claims description 25
- 229910052748 manganese Inorganic materials 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- 229910052698 phosphorus Inorganic materials 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 14
- 238000005554 pickling Methods 0.000 claims description 14
- 229910052729 chemical element Inorganic materials 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000005097 cold rolling Methods 0.000 claims description 8
- 238000003763 carbonization Methods 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 3
- 239000011651 chromium Substances 0.000 abstract description 24
- 238000005096 rolling process Methods 0.000 abstract description 23
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 14
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000011573 trace mineral Substances 0.000 abstract description 4
- 235000013619 trace mineral Nutrition 0.000 abstract description 4
- 238000005242 forging Methods 0.000 abstract description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 22
- 239000011572 manganese Substances 0.000 description 19
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- 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
- C21D5/00—Heat treatments of cast-iron
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/1244—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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention provides a kind of silicon steel, preparation method and application.In silicon steel of the present invention, by to the selection of trace element added in described silicon steel and adjustment, regulate and control the content of the trace element such as added manganese, chromium, boron, so that silicon steel of the present invention is while having good electromagnetic performance, additionally it is possible to have good mechanical performance simultaneously.Simultaneously, present invention also offers the preparation method of a kind of described silicon steel, in the inventive method, by forging, there is elementary composition steel billet of the present invention, silicon steel of the present invention is prepared again by this billet rolling, there is preparation method easy, the advantage such as obtained silicon steel electromagnetic performance and good mechanical property.Further, present invention also offers the purposes of described silicon steel, silicon steel of the present invention has good electromagnetic performance and mechanical performance, it is thus possible to for preparation in the devices such as the motor rotor that material electromagnetic performance and mechanical performance all have higher requirements.
Description
Technical field
The present invention relates to steel field, in particular to a kind of silicon steel, preparation method and application.
Background technology
Silicon steel refers to the extremely low carbon duriron alloy that silicon content is 0.5% to 4.5%, is divided because structure is different with purposes
For non-orientation silicon steel and orientation silicon steel.Silicon steel is mainly used as the iron core of various motor, electromotor, compressor, motor and transformator,
It it is the indispensable raw material product of the industry such as electric power, household electrical appliances.
Elevator AC two speed motor is mainly made up of stator and rotor, and stator is actionless part, and rotor is
Rotating part, has certain air gap between stator and rotor.Rotor is made up of with winding iron core, and rotor core is fitted in rotating shaft
On, silicon steel plate stacking form.
Existing electrician's stalloy is all with electromagnetic performance as main performance index, and chemical composition is to ensure electromagnetic performance
It is main, the attributes such as the iron loss of stalloy and intensity is had certain ignoring, thus it is poor to cause stalloy mechanical performance,
Intensity is relatively low, and service life is shorter.
Therefore, develop a kind of silicon steel with good mechanical properties and electromagnetic performance, just become current urgently to be resolved hurrily
Technical problem.
In view of this, the special proposition present invention.
Summary of the invention
The first object of the present invention is to provide a kind of silicon steel, by the selection to trace element added in described silicon steel
And adjustment, the content of the regulation and control trace element such as added manganese, chromium, boron simultaneously so that silicon steel of the present invention have good
While electromagnetic performance, additionally it is possible to there is good mechanical performance, and then it is low to solve prior art silicon steel mechanical strength, it is impossible to
Meet electrician to use, especially as technical problems such as motor rotor use demands.
The second object of the present invention is to provide the preparation method of a kind of described silicon steel, in the inventive method, by forging
Make and there is elementary composition steel billet of the present invention, then prepared silicon steel of the present invention by this billet rolling, there is preparation method easy,
The advantages such as obtained silicon steel electromagnetic performance and good mechanical property.
Third object of the present invention is to provide the purposes of a kind of described silicon steel, and silicon steel of the present invention has good electromagnetism
Performance and mechanical performance, it is thus possible to for preparation material electromagnetic performance and mechanical performance are all had higher requirements electronic
In the devices such as machine rotor.
In order to realize the above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of silicon steel, the mass percent of chemical element contained by described silicon steel is: Si 3.5～4.0%, C0.05～
4.0%, P 0.16～0.19%, S 0.04～0.06%, Mn 0.60～0.70%, Cr 0.08～0.10%, B 0.01～
0.10%, surplus is Fe and other inevitable impurity.
In the present invention, by the elements such as Mn, Cr, B, P that adulterate in described silicon steel, and each constituent content is carried out further
Selection so that silicon steel of the present invention is while having good electromagnetic performance, additionally it is possible to have good mechanical performance.
Concrete, in silicon steel of the present invention, carbon can increase intensity and the wearability of silicon steel, but carbon also can
Increase the loss of magnetic core.It is, therefore, necessary to the consumption of carbon is regulated and controled, thus while improving silicon steel intensity, the most effectively control
The core loss that system is caused due to the interpolation of carbon；In silicon steel of the present invention, P elements can increase the corrosion resistance of silicon steel
And intensity；In silicon steel of the present invention, chromium element can improve the corrosion resistance of silicon steel, intensity and hardness and wearability, and improves
The electromagnetic performance of silicon steel；In silicon steel of the present invention, the use of manganese element can increase the intensity of silicon steel, hardness, wearability, and improves
The electromagnetic performance of silicon steel；In silicon steel of the present invention, the use of boron element can improve the magnetic of silicon steel.Further, silicon of the present invention
In steel, each constituent content also must control in certain scope, can play good effect, otherwise also due to element
Between interaction make silicon steel can not meet magnetic and/or the requirement of mechanical performance of normal use.
Optionally, in the present invention, the mass percent of described silicon steel containedization element is: Si 3.6～3.8%, C 0.1
～2.0%, P 0.17～0.18%, S 0.04～0.06%, Mn 0.60～0.70%, Cr 0.08～0.10%, B 0.05
～0.08%, surplus is Fe and other inevitable impurity.
In the present invention, by adjusting further and optimizing constituent content each in silicon steel, thus optimize this further
The performance of invention silicon steel.
Governed, in the present invention, contained by described silicon steel, the mass percent of chemical element is: Si 3.7%, C 1.5%, P
0.18%, S:0.05%, Mn 0.65%, Cr 0.09%, B 0.07%, surplus is Fe and inevitable impurity.
Meanwhile, present invention also offers the preparation method of described silicon steel, described method comprises the steps:
(1) steel billet is prepared after smelting and cast；
(2) by hot rolling of steel billet；
(3) gained sheet material after hot rolling is batched；
(4) rear gained roll bending normalizing annealing will be batched, and pickling；
(5) roll bending after pickling is carried out cold rolling, and carbonization treatment, then high annealing, obtain described silicon steel.
In the present invention, by forging, there is elementary composition steel billet of the present invention, then prepared this by this billet rolling
Bright silicon steel, has preparation method easy, the advantage such as obtained silicon steel electromagnetic performance and good mechanical property.
In the present invention, described smelting, for using vacuum smelting furnace to smelt, obtains the silicon steel steel with chemical composition of the present invention
Base.
In the present invention, described hot rolling is the sheet material becoming thickness to be 2～3mm billet rolling.
Optionally, in the present invention, described in step (2), the temperature of hot rolling is 1200～1300 DEG C；Preferably, the present invention
In, the temperature of described hot rolling is 1250～1280 DEG C, such as, can be, but is not limited to 1260 DEG C, 1270 DEG C or 1275 DEG C etc..
In the present invention, described hot rolling includes roughing and finish rolling；Wherein, described roughing is big volume under pressure high-speed rolling, and increases
Add cooling water amount to regulate and control rolling temperature.
In the present invention, described cold rolling be that roll bending is rolling to thickness is 0.20～0.25mm.
Optionally, in the present invention, the temperature batched described in step (3) is 400～500 DEG C；Can be such as, but not limit
In 410 DEG C, 420 DEG C, 430 DEG C, 440 DEG C, 450 DEG C, 460 DEG C, 470 DEG C, 480 DEG C or 490 DEG C etc..
Optionally, in the present invention, described in step (4), the temperature of normalizing annealing is 1200～1300 DEG C, normalizing annealing
Time is 0.5～2.5h；The temperature of such as normalizing annealing can be, but be not limited to 1210 DEG C, 1220 DEG C, 1230 DEG C, 1240 DEG C,
1250 DEG C, 1260 DEG C, 1270 DEG C, 1280 DEG C or 1290 DEG C etc.；The time of normalizing can be but be not limited to 1h, 1.5h or 2h
Deng.
In the present invention, by selection and the adjustment of the temperature and time to normalizing annealing, such that it is able to regulate and control volume further
Take the morphological characteristic of rear roll bending, and make microcosmic composition and crystal habit in each several part of roll bending more uniform.
Optionally, in the present invention, pickling described in step (4) is by molten for the hydrochloric acid that roll bending concentration is 15% after normalizing
Immersion bubble 5～15min removing iron scale.
In the present invention, by acid used by pickling and concentration and the adjustment of pickling time and optimization, thus can have
While effect removes surface of silicon steel iron scale, also due to long soaking time, surface of silicon steel will not be caused damage.
Optionally, in the present invention, described in step (5), the temperature of high annealing is 600～1000 DEG C；Preferably, this
In bright, the temperature of described high annealing is 800～1000 DEG C；Can be such as, but be not limited to 810 DEG C, 820 DEG C, 830 DEG C, 840
℃、850℃、860℃、870℃、880℃、890℃、900℃、910℃、920℃、930℃、940℃、950℃、960℃、
970 DEG C, 980 DEG C or 990 DEG C etc..
Concrete, the preparation method step of silicon steel of the present invention is as follows:
(1) steel billet with chemical composition of the present invention is prepared after smelting and cast；
(2) by steel billet hot rolling under the conditions of 1200～1300 DEG C, and the sheet material that thickness is 2～3mm is obtained；
Wherein, described hot rolling is first roughing, then finish rolling；
Wherein, described roughing is big volume under pressure high-speed rolling, and increases cooling water amount with regulation and control rolling temperature 1200
～1300 DEG C；
(3) gained sheet material after hot rolling is batched under the conditions of 400～500 DEG C；
(4) rear gained roll bending normalizing annealing 0.5～2.5h under the conditions of 1200～1300 DEG C will be batched, and with the salt of 15%
Acid solution soaks 5～15min pickling to remove iron scale；
(5) roll bending after pickling is carried out cold rolling, and obtain the sheet material that thickness is 0.20～0.25mm, then carry out decarburization
Process, and high annealing under the conditions of 600～1000 DEG C, obtain described silicon steel.
Same, present invention also offers the silicon steel of the present invention application in preparing motor rotor.
Silicon steel of the present invention has good electromagnetic performance and mechanical performance, it is thus possible to for preparation to material electro permanent magnetic
In the devices such as the motor rotor that energy and mechanical performance all have higher requirements.
Optionally, in the present invention, described motor is AC two speed motor.
Compared with prior art, the invention have the benefit that
(1), in the present invention, by the elements such as Mn, Cr, B, P that adulterate in described silicon steel, and each constituent content is entered
The selection of one step, so that silicon steel of the present invention has good electromagnetic performance and mechanical performance；
(2) in the present invention, by hot rolling in prepared by silicon steel, batch, treatment temperature and/or place in the step condition such as normalizing
Reason selection of time and adjustment, such that it is able to prepare surface quality silicon steel good, in uniform thickness.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but those skilled in the art will
Understanding, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.In embodiment unreceipted specifically
Condition person, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or instrument unreceipted production firm person, be
Can be by the commercially available conventional products bought and obtain.
Embodiment 1
(1) using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si 3.5%, C
0.05%, P 0.16%, S 0.04%, Mn 0.60%, Cr 0.08%, B 0.01%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；
(2) by steel billet hot rolling under the conditions of 1250～1280 DEG C, the silicon steel sheet material that thickness is 2mm is obtained；
Wherein, described hot rolling is first roughing, then finish rolling；
Wherein, described roughing is big volume under pressure high-speed rolling, and increases cooling water amount with regulation and control rolling temperature 1250
～1280 DEG C；
(3) gained sheet material after hot rolling is batched under the conditions of 400 DEG C；
(4) rear gained roll bending normalizing annealing 0.5h under the conditions of 1200 DEG C will be batched, then by the roll bending after normalizing annealing
Soak 15min with the hydrochloric acid solution that concentration is 15% and remove roll bending scale on surface；
(5) roll bending after pickling is carried out cold rolling, and obtain the sheet material that thickness is 0.20mm；Then, carry out carbonization treatment,
And under the conditions of 900 DEG C high annealing, obtain the silicon steel of embodiment 1.
Embodiment 2
(1) using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si 3.6%, C
0.80%, P 0.17%, S 0.05%, Mn 0.63%, Cr 0.09%, B 0.06%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；
(2) by steel billet hot rolling under the conditions of 1250～1280 DEG C, the silicon steel sheet material that thickness is 2mm is obtained；
Wherein, described hot rolling is first roughing, then finish rolling；
Wherein, described roughing is big volume under pressure high-speed rolling, and increases cooling water amount with regulation and control rolling temperature 1250
～1280 DEG C；
(3) gained sheet material after hot rolling is batched under the conditions of 400 DEG C；
(4) rear gained roll bending normalizing annealing 1h under the conditions of 1200 DEG C will be batched, then the roll bending after normalizing annealing will be used
Concentration is the hydrochloric acid solution immersion 10min removing roll bending scale on surface of 15%；
(5) roll bending after pickling is carried out cold rolling, and obtain the sheet material that thickness is 0.25mm；Then, carry out carbonization treatment,
And under the conditions of 900 DEG C high annealing, obtain the silicon steel of embodiment 2.
Embodiment 3
(1) using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si 3.7%, C
1.5%, P 0.18%, S 0.05%, Mn 0.65%, Cr 0.09%, B 0.07%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；
(2) by steel billet hot rolling under the conditions of 1250～1280 DEG C, the silicon steel sheet material that thickness is 3mm is obtained；
Wherein, described hot rolling is first roughing, then finish rolling；
Wherein, described roughing is big volume under pressure high-speed rolling, and increases cooling water amount with regulation and control rolling temperature 1250
～1280 DEG C；
(3) gained sheet material after hot rolling is batched under the conditions of 500 DEG C；
(4) rear gained roll bending normalizing annealing 0.5h under the conditions of 1200 DEG C will be batched, then by the roll bending after normalizing annealing
Soak 8min with the hydrochloric acid solution that concentration is 15% and remove roll bending scale on surface；
(5) roll bending after pickling is carried out cold rolling, and obtain the sheet material that thickness is 0.25mm；Then, carry out carbonization treatment,
And under the conditions of 900 DEG C high annealing, obtain the silicon steel of embodiment 3.
Embodiment 4
(1) using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si 4.0%, C
4.0%, P 0.19%, S 0.06%, Mn 0.70%, Cr 0.10%, B 0.10%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；
(2) by steel billet hot rolling under the conditions of 1250～1280 DEG C, the silicon steel sheet material that thickness is 2mm is obtained；
Wherein, described hot rolling is first roughing, then finish rolling；
Wherein, described roughing is big volume under pressure high-speed rolling, and increases cooling water amount with regulation and control rolling temperature 1250
～1280 DEG C；
(3) gained sheet material after hot rolling is batched under the conditions of 400 DEG C；
(4) rear gained roll bending normalizing annealing 0.5h under the conditions of 1200 DEG C will be batched, then by the roll bending after normalizing annealing
Soak 15min with the hydrochloric acid solution that concentration is 15% and remove roll bending scale on surface；
(5) roll bending after pickling is carried out cold rolling, and obtain the sheet material that thickness is 0.20mm；Then, carry out carbonization treatment,
And under the conditions of 900 DEG C high annealing, obtain the silicon steel of embodiment 4.
Experimental example 1
From the silicon steel of embodiment 1-4, randomly select 5 parts of experiment materials respectively, carry out the strength degree σ b of silicon steel and bend
Take the measuring mechanical property of the silicon steel such as limit σ s, and record, then calculate the mean intensity limit of each group of silicon steel and the most in the wrong
Taking the limit and yield tensile ratio (σ s/ σ b), result is as follows:
Meanwhile, from the silicon steel of embodiment 1-4, randomly select 5 parts of experiment materials respectively, carry out magnetic strength B8And iron loss
P17/50Test, and record, then calculate magnetic strength and the iron loss meansigma methods of each group of silicon steel, and result is as follows:
From above-mentioned test result, silicon steel of the present invention has good mechanical performance and magnetic property.Further, will
AC two speed motor rotor prepared further by the silicon steel of embodiment of the present invention 1-4, and tests under normal usage,
Test result shows, the motor rotor prepared by embodiment 1-4 silicon steel, under conditions of operating is more than 15000h, remains able to
Normal work.
Comparative example 1
Using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si3.7%, C
1.5%, P 0.18%, S 0.05%, Mn 0.65%, Cr 0.10%, B 0.13%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；
Then according in embodiment 3, the method for step (2)-(5) prepares the silicon steel of comparative example 1.
The difference of the silicon steel of comparative example 1 and the silicon steel of embodiment 3 be chromium in silicon steel, boron content different；Meanwhile, comparative example
In the silicon steel of 1, the content of boron is the scope of contained boron element higher than in the application.
Comparative example 2
Using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si3.7%, C
1.5%, P 0.18%, S 0.05%, Mn 0.65%, Cr 0.15%, B 0.05%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；Then according in embodiment 3, the method for step (2)-(5) prepares the silicon steel of comparative example 2.
The difference of the silicon steel of comparative example 2 and the silicon steel of embodiment 3 be chromium in silicon steel, boron content different；Meanwhile, comparative example
In the silicon steel of 2, the content of chromium is the scope of contained chromium element higher than in the application.
Comparative example 3
Using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si3.5%, C
1.5%, P 0.18%, S 0.05%, Mn 0.75%, Cr 0.08%, B 0.08%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；
Then according in embodiment 3, the method for step (2)-(5) prepares the silicon steel of comparative example 3.The silicon steel of comparative example 3 with
The silicon steel difference of embodiment 3 is the content difference of manganese in silicon steel, chromium, boron；Meanwhile, in the silicon steel of comparative example 3, the content of manganese is high
The scope of contained manganese element in the application.
Comparative example 4
Using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si3.7%, C
1.5%, P 0.18%, S 0.05%, Mn 0.90%, Cr 0.04%, B 0.005%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；
Then according in embodiment 3, the method for step (2)-(5) prepares the silicon steel of comparative example 4.The silicon steel of comparative example 4 with
The silicon steel difference of embodiment 3 is the content difference of manganese in silicon steel, chromium, boron；Meanwhile, in the silicon steel of comparative example 4, Fe content is higher than
The scope of contained manganese element in the application, chromium content is the scope of contained chromium element less than in the application.
Comparative example 5
Using vacuum metling the method cast, the mass percent preparing contained chemical element is: Si3.7%, C
1.5%, P 0.12%, S 0.05%, Mn 0.50%, Cr 0.15%, B 0.01%, surplus is that Fe is inevitable with other
Impurity silicon steel steel billet；
Then according in embodiment 3, the method for step (2)-(5) prepares the silicon steel of comparative example 5.The silicon steel of comparative example 5 with
The silicon steel difference of embodiment 3 is the content difference of manganese in silicon steel, chromium, boron；Meanwhile, in comparative example 5 silicon steel, the content of manganese is less than
The scope of contained manganese element in the application, the content of chromium is the scope of contained chromium element higher than in the application.
Experimental example 2
From the silicon steel of comparative example 1-5, randomly select 5 parts of experiment materials respectively, carry out strength degree σ b and yield limit σ
The measuring mechanical property of the silicon steel such as s, and record, then calculate the mean intensity limit of each group of silicon steel and the average yield limit with
And yield tensile ratio (σ s/ σ b), result is as follows:
Meanwhile, from the silicon steel of comparative example 1-5, randomly select 5 parts of experiment materials respectively, carry out magnetic strength B8And iron loss
P17/50Test, and record, then calculate magnetic strength and the iron loss meansigma methods of each group of silicon steel, and result is as follows:
Silicon steel of the present invention has good electromagnetic performance and mechanical performance, it is possible to for preparation to material electromagnetic performance with
And in the device such as the motor rotor that all has higher requirements of mechanical performance.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that without departing substantially from the present invention's
May be made that in the case of spirit and scope many other change and amendment.It is, therefore, intended that in the following claims
Including all such changes and modifications belonged in the scope of the invention.
Claims (10)
1. a silicon steel, it is characterised in that contained by described silicon steel, the mass percent of chemical element is: Si 3.5～4.0%, C
0.05～4.0%, P 0.16～0.19%, S 0.04～0.06%, Mn 0.60～0.70%, Cr 0.08～0.10%, B
0.01～0.10%, surplus is Fe and other inevitable impurity.
Silicon steel the most according to claim 1, it is characterised in that contained by described silicon steel, the mass percent of chemical element is:
Si 3.6～3.8%, C 0.1～2.0%, P 0.17～0.18%, S 0.04～0.06%, Mn 0.60～0.70%, Cr
0.08～0.10%, B 0.05～0.08%, surplus is Fe and other inevitable impurity.
3. the preparation method of silicon steel described in claim 1 or 2, it is characterised in that described method comprises the steps:
(1) steel billet is prepared after smelting and cast；
(2) by hot rolling of steel billet；
(3) hot rolling gained sheet material is batched；
(4) rear gained roll bending normalizing annealing will be batched, and pickling；
(5) roll bending after pickling is carried out cold rolling, and carbonization treatment, then high annealing, obtain described silicon steel.
Method the most according to claim 3, it is characterised in that described in step (2), the temperature of hot rolling is 1200～1300
℃。
Method the most according to claim 3, it is characterised in that the temperature batched described in step (3) is 400～500 DEG C.
Method the most according to claim 3, it is characterised in that the temperature of normalizing annealing described in step (4) be 1200～
1300 DEG C, the time of normalizing annealing is 0.5～2.5h.
Method the most according to claim 3, it is characterised in that pickling described in step (4) is to be used by the roll bending after normalizing
Concentration is hydrochloric acid solution the immersion 5～15mi n removing iron scales of 15%.
Method the most according to claim 3, it is characterised in that the temperature of high annealing described in step (5) be 600～
1000℃。
9. the application in preparing motor rotor of the silicon steel described in claim 1 or 2.
Application the most according to claim 9, it is characterised in that described motor is AC two speed motor.
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| CN111945078A (en) * | 2020-07-29 | 2020-11-17 | 苏州翔楼新材料股份有限公司 | Manufacturing method of cold-rolled steel strip for engine valve rocker |
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| CN1225396A (en) * | 1997-12-22 | 1999-08-11 | 新日本制铁株式会社 | Non-oriented electrical steel sheet having good punchability and process for producing same |
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