CN109266821A - A kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor - Google Patents
A kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor Download PDFInfo
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- CN109266821A CN109266821A CN201811448509.7A CN201811448509A CN109266821A CN 109266821 A CN109266821 A CN 109266821A CN 201811448509 A CN201811448509 A CN 201811448509A CN 109266821 A CN109266821 A CN 109266821A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1222—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1272—Final recrystallisation annealing
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- H—ELECTRICITY
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention relates to a kind of preparation processes of new-type high silicon steel applied to AC induction motor solid rotor, include the following steps: Fe-6.5%Si alloy molten solution in laboratory base, bulk silicon polishing is become into powder first, is merged with 0.5% ~ 5% diboron trioxide and 1% ~ 3% nanometer cobalt sesquioxide powder collectively as additive；It is passed through nitrogen atmosphere melting, high silicon steel sample of annealing to obtain；High silicon steel sample is rolled using warm-rolling technique；Annealing, is finally prepared new-type high silicon Steel material needed for solid rotor.New-type high silicon steel of the present invention is a kind of uniform texture, the high silicon steel material of solid rotor of good performance, the solid rotor of the AC induction motor made from this high silicon steel material has a lesser middle cardiac stress, larger critical defect size, and structure is simple, mechanical strength and balance are excellent.
Description
Technical field
The present invention relates to a kind of applications using new structural high silicon steel rotor on AC induction motor, especially relate to
And a series of a kind of 6.5% high silicon steel prepared under heat treatment process different from conventional method, and will be in the structure of this rotor
Upper further improvement prepares the research and development technology field of rotor applied to high silicon steel.
Background technique
Rotor is the core component of steam turbine, it is responsible for the important task of energy conversion and torque transmitting.Rotor in work
It is in high-temperature high-pressure medium and rotate at high speed, it is subjected to stress caused by the high pressure of working steam and height temperate zone is come
Creep impairment, and still suffer from centrifugal stress caused by high speed rotation, transmitting operation torque generate torsional shear stress,
Alternation tangential stress caused by being self-possessed under high speed rotation, operating condition variation cause thermal stress caused by non-uniform temperature and shafting to be shaken
Dynamic stress caused by dynamic etc., thus require rotor that there is good mechanical performance.
Solid rotor structure is simple, and mechanical strength and balance are high, is suitble to frequent heavy-load start or works long hours
On-position, but the mechanical property that solid rotor causes motor softer, rated operation slippage is big, serious rotor loss
It is too low to will cause electric efficiency, is mentioned with defect to improve traditional solid rotor output performance the characteristics of for former solid rotor
High silicon steel solid rotor industrial application ability, researcher both domestic and external make a large amount of research work to solid rotor.?
In terms of application range, rising for proposition reuses solid and spherical TiO_2, high-speed solid rotor induction machine and solid mover mostly certainly
It is all worth with high application and research by degree induction machine etc.；In terms of solid rotor improved properties, the multilayer (group of proposition
It is box-like) solid rotor, two ends of rotor add the rotors such as copper end ring, smooth solid rotor surface fluting and fluting casting positive conductive body
Optimize structure, motor performance help with higher is promoted to improvement；
Since the mechanical property of AC asynchronous motor is softer, excessive rotor loss causes electric efficiency and energy index mistake
It is low, seriously affect the application of AC induction motor.In order to improve the electromechanical properties of AC induction motor, this paper presents uses
The solid rotor structure of smooth solid rotor surface fluting.This inhibits rotor vortex to rotor impedance is reduced, and reduces rotor damage
Consumption improves motor performance and the influence etc. of rotor high-frequency harmonic is inhibited to have obvious action.
Summary of the invention
In order to solve prior art problem, it is an object of the present invention to overcome the deficiencies of the prior art, and to provide one kind
A series of new-type high silicon steel for preparing solid rotor under heat treating regimes using high silicon steel (6.5% silicone content), is a kind of tissue
Structure is uniform, the high silicon steel material of solid rotor of good performance, the reality of the AC induction motor made from this high silicon steel material
Heart rotor has a lesser middle cardiac stress, larger critical defect size, and structure is simple, mechanical strength and balance are excellent, unique
Vortex characteristic the advantages that, improve rotor safety in utilization, Extending Rotor service life lowers the target of the loss of electric machine.
In order to achieve the above objectives, the present invention adopts the following technical scheme: a kind of be applied to AC induction motor solid rotor
New-type high silicon steel preparation process, include the following steps:
A. Fe-6.5%Si alloy molten solution is in laboratory base.Bulk silicon polishing is become into powder first, is merged and 0.5% ~ 5%
Diboron trioxide and 1% ~ 3% nanometer cobalt sesquioxide powder collectively as additive；
B. furnace power supply is opened, nitrogen atmosphere is passed through, for volume between 50% ~ 90%, heating principle is usually that the slow low temperature of high temperature can fit
Degree is fast, general<400 DEG C can freely heat up, less than 100 DEG C/h, sample is larger to be kept at 800 DEG C heating speed at>800 DEG C
The processing of 30min samming is further continued for heating up.In 850 DEG C ~ 1000 DEG C heat preservation 15min ~ 2h, temperature is higher, and time more germination is bigger,
Magnetic property increases mechanical properties decrease simultaneously.600 DEG C or less are cooled to furnace is cold or air-cooled drop later with 80 DEG C/h cooling velocity
To room temperature；
C. protective gas is closed, general supply takes out high silicon steel sample of annealing；
D. it rolls, the present invention uses warm-rolling technique；Determine that start rolling temperature at 450 DEG C or more, 380 DEG C of final rolling temperature or more, passes through
The reciprocal hot rolling of 3 passages is finally rolled into sample of the hot-rolled strip of 2.6 ~ 3mm of thickness as heat treatment experiment, and heat treatment is using box
Resistance furnace carries out.Slab carries out centering on the basis of rolling centerline, it is ensured that both ends and rolling centerline on width of plate slab direction
Distance it is consistent, to roll；
E. it makes annealing treatment；Steel plate is placed in annealing furnace, annealing temperature is located between 850 DEG C -1000 DEG C, and annealing time is
Between 60min-120min, room temperature is cooled to the furnace later.
The present invention compared with prior art, has following obvious prominent substantive distinguishing features and remarkable advantage:
The characteristics of 1. novel rotor using the high silicon steel preparation of the present invention has chemical constituents analysis uniform, compact structure, difference
It is standby in traditional silicon steel, possess better mechanical property, brittleness is improved, and relative to smooth solid rotor, is slotted solid turn
Son can generate relatively good electromagnetic field, reduce rotor impedance.
2. the solid rotor asynchronous AC motor of the high silicon steel preparation of the present invention is rotor structure with its unique advantage
Improvement greatly enhances solid rotor electric machine performance, in addition to this, selects suitable material and new diseases
It is also a kind of effective approach.
3. the present invention higher power when the excellent starting performance of existing smooth solid rotor and small revolutional slip are run can refer to
Mark has better small revolutional slip runnability and higher power output compared with conventional rotors induction machine.Pass through analytical Calculation
It is obtained with experimental verification, after peariform slot is opened on high silicon steel novel rotor surface, significantly reduces rotor harmonic wave eddy-current loss, improved
The efficiency of motor.
Specific embodiment
Above scheme is described further below in conjunction with specific implementation example, the preferred embodiment of the present invention is described in detail such as
Under:
Embodiment 1:
A kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor, includes the following steps:
A. Fe-6.5%Si alloy molten solution is in laboratory base.Bulk silicon polishing is become into powder first, 0.5% three oxygen are added
Change two boron and 1% nanometer cobalt sesquioxide powder collectively as additive；The present invention chooses different formulations and prepares, and has
Body following example has detailed note.
B. furnace power supply is opened, nitrogen atmosphere is passed through, for volume between 50% ~ 90%, heating principle is usually the slow low temperature of high temperature
Can be moderately fast, it is general<400 DEG C can freely heat up, less than 100 DEG C/h, sample is larger to be protected at 800 DEG C heating speed at>800 DEG C
The processing of 30min samming is held to be further continued for heating up.In 850 DEG C ~ 1000 DEG C heat preservation 15min ~ 2h, temperature is higher, time more germination more
Greatly, magnetic property increases mechanical properties decrease simultaneously.Later with 80 DEG C/h cooling velocity be cooled to 600 DEG C or less it is cold or air-cooled with furnace
It is down to room temperature.
C. protective gas is closed, general supply takes out high silicon steel sample of annealing.
D. it rolls, the present invention uses warm-rolling technique；Determine start rolling temperature at 450 DEG C or more, 380 DEG C of final rolling temperature or more,
By the reciprocal hot rolling of 3 passages, it is finally rolled into sample of the hot-rolled strip of 2.6 ~ 3mm of thickness as heat treatment experiment, heat treatment uses
Chamber type electric resistance furnace carries out.Slab carries out centering on the basis of rolling centerline, it is ensured that on width of plate slab direction in both ends and rolling
The distance of heart line is consistent, cannot there is deviation, to roll.
E. it makes annealing treatment；Steel plate is placed in annealing furnace, annealing temperature is located between 850 DEG C -1000 DEG C, when annealing
Between between 60min-120min, cool to room temperature with the furnace later.
The identical solid rotor AC asynchronous motor of five stators is devised, a rotor is normal steel casting structure, separately
One rotor is the high silicon steel rotor of freshly prepd surface fluting.Motor basic parameter is as follows: rated power: the kW of PN=7. 5；Volume
Constant voltage: 380 V of UN=AC；Number of poles: 2p=4；Stator outer diameter: the mm of D2=210；Number of stator slots: Z=36；Iron core is long
Degree: the mm of L=145.It provides that four kinds of motors start in standard, tests different motor power (output)s, and thus obtain rotor magnetic conductivity.By
For Maxwell equation it can be concluded that the three-dimensional of fluting cast aluminium layer solves equation, specific rotor magnetic conductivity calculation formula is as follows:
In formula, if the magnetic conductivity along change in coordinate axis direction is respectively μx, μz, μz；Conductivity are as follows: σx, σy, σz；
Influence of the particularly suitable comparison different rotor of the present embodiment method to same motor performance, to freshly prepd high silicon steel rotor
Carry out effective evaluation.The present embodiment utilizes advanced metallurgical preparation method, and the stringent high silicon steel smelting preparation process of control is improving silicon
Guarantee the mechanical property of silicon steel under the premise of steel magnetic conductivity itself in turn.The present embodiment utilizes five kinds of identical electric motor types, surveys
The excellent properties that novel solid rotor is different from traditional solid rotor are tried, while also compared obtaining under Different Preparation new
Otherness between type rotor.To the magnetic conductivity of rotor, the power etc. of motor is made that important evaluation, the result essence of evaluation and test
Really, comprehensively.
Embodiment 2:
A kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor, includes the following steps:
A. it is changed to be added 1% diboron trioxide and 1.5% nanometer cobalt sesquioxide powder collectively as additive；
B. furnace atmosphere is adjusted to 70%N2+ 30% air；
D. rolling pass is changed to 8 times, remaining is constant.
The identical solid rotor AC asynchronous motor of five stators is devised, a rotor is normal steel casting structure, separately
One rotor is the high silicon steel rotor of freshly prepd surface fluting.Motor basic parameter is as follows: rated power: the kW of PN=7. 5；Volume
Constant voltage: 380 V of UN=AC；Number of poles: 2p=4；Stator outer diameter: the mm of D2=210；Number of stator slots: Z=36；Iron core is long
Degree: the mm of L=145.It provides that four kinds of motors start in standard, tests different motor power (output)s, and thus obtain rotor magnetic conductivity.By
For Maxwell equation it can be concluded that the three-dimensional of fluting cast aluminium layer solves equation, specific rotor magnetic conductivity calculation formula is as follows:
In formula, if the magnetic conductivity along change in coordinate axis direction is respectively μx, μz, μz；Conductivity are as follows: σx, σy, σz；
Influence of the particularly suitable comparison different rotor of the present embodiment method to same motor performance, to freshly prepd high silicon steel rotor
Carry out effective evaluation.The present embodiment utilizes advanced metallurgical preparation method, and the stringent high silicon steel smelting preparation process of control is improving silicon
Guarantee the mechanical property of silicon steel under the premise of steel magnetic conductivity itself in turn.The present embodiment utilizes five kinds of identical electric motor types, surveys
The excellent properties that novel solid rotor is different from traditional solid rotor are tried, while also compared obtaining under Different Preparation new
Otherness between type rotor.To the magnetic conductivity of rotor, the power etc. of motor is made that important evaluation, the result essence of evaluation and test
Really, comprehensively.
Embodiment 3:
The present embodiment is substantially the same as in the previous example, and is particular in that:
A kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor, includes the following steps:
A. it is changed to be added 2% diboron trioxide and 3.5% nanometer cobalt sesquioxide powder collectively as additive；
B. furnace atmosphere is adjusted to 50%N in2+ 50% air；
D. rolling pass is changed to 10 times, remaining is constant.
The identical solid rotor AC asynchronous motor of five stators is devised, a rotor is normal steel casting structure, separately
One rotor is the high silicon steel rotor of freshly prepd surface fluting.Motor basic parameter is as follows: rated power: the kW of PN=7. 5；Volume
Constant voltage: 380 V of UN=AC；Number of poles: 2p=4；Stator outer diameter: the mm of D2=210；Number of stator slots: Z=36；Iron core is long
Degree: the mm of L=145.It provides that four kinds of motors start in standard, tests different motor power (output)s, and thus obtain rotor magnetic conductivity.By
For Maxwell equation it can be concluded that the three-dimensional of fluting cast aluminium layer solves equation, specific rotor magnetic conductivity calculation formula is as follows:
In formula, if the magnetic conductivity along change in coordinate axis direction is respectively μx, μz, μz；Conductivity are as follows: σx, σy, σz；
Influence of the particularly suitable comparison different rotor of the present embodiment method to same motor performance, to freshly prepd high silicon steel rotor
Carry out effective evaluation.The present embodiment utilizes advanced metallurgical preparation method, and the stringent high silicon steel smelting preparation process of control is improving silicon
Guarantee the mechanical property of silicon steel under the premise of steel magnetic conductivity itself in turn.The present embodiment utilizes five kinds of identical electric motor types, surveys
The excellent properties that novel solid rotor is different from traditional solid rotor are tried, while also compared obtaining under Different Preparation new
Otherness between type rotor.To the magnetic conductivity of rotor, the power etc. of motor is made that important evaluation, the result essence of evaluation and test
Really, comprehensively.
Embodiment 4:
The present embodiment is substantially the same as in the previous example, and is particular in that:
A kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor, includes the following steps:
A. it is changed to be added 3% diboron trioxide and 5% nanometer cobalt sesquioxide powder collectively as additive；
B. furnace atmosphere is adjusted to 30%N in2+ 70% air；
D. rolling pass is changed to 12 times, remaining is constant.
The identical solid rotor AC asynchronous motor of five stators is devised, a rotor is normal steel casting structure, separately
One rotor is the high silicon steel rotor of freshly prepd surface fluting.Motor basic parameter is as follows: rated power: the kW of PN=7. 5；Volume
Constant voltage: 380 V of UN=AC；Number of poles: 2p=4；Stator outer diameter: the mm of D2=210；Number of stator slots: Z=36；Iron core is long
Degree: the mm of L=145.It provides that four kinds of motors start in standard, tests different motor power (output)s, and thus obtain rotor magnetic conductivity.By
For Maxwell equation it can be concluded that the three-dimensional of fluting cast aluminium layer solves equation, specific rotor magnetic conductivity calculation formula is as follows:
In formula, if the magnetic conductivity along change in coordinate axis direction is respectively μx, μz, μz；Conductivity are as follows: σx, σy, σz；
Influence of the particularly suitable comparison different rotor of the present embodiment method to same motor performance, to freshly prepd high silicon steel rotor
Carry out effective evaluation.The present embodiment utilizes advanced metallurgical preparation method, and the stringent high silicon steel smelting preparation process of control is improving silicon
Guarantee the mechanical property of silicon steel under the premise of steel magnetic conductivity itself in turn.The present embodiment utilizes five kinds of identical electric motor types, surveys
The excellent properties that novel solid rotor is different from traditional solid rotor are tried, while also compared obtaining under Different Preparation new
Otherness between type rotor.To the magnetic conductivity of rotor, the power etc. of motor is made that important evaluation, the result essence of evaluation and test
Really, comprehensively.
Experimental Comparison analysis:
The result of above-described embodiment experimental test and analysis such as the following table 1,
1. 1~embodiment of the embodiment of the present invention 4 of table is through electrochemical test treated each sample detection performance parameter list
From the above analysis, calculation shows that, rotor performance of the rotor obviously than not improveing after structural improvement is more excellent, mounted in same
The rotor that the power of motor is highly improved, while preparing under different process on kind motor is in the test process of motor of the same race
Also reflect biggish gap, this to reduce rotor impedance, inhibit rotor vortex, reduce rotor loss, improve motor performance with
And the influence etc. of rotor high-frequency harmonic is inhibited to have obvious action.
The present invention is not limited to the above embodiments, can make a variety of variations with the purpose of innovation and creation according to the present invention,
Change, modification, substitution, combination or the simplification made under the Spirit Essence and principle of all technical solutions according to the present invention, should be
The substitute mode of effect prepares height using advanced metallurgical method without departing from the present invention as long as meeting goal of the invention of the invention
The technical principle and inventive concept of silicon steel solid rotor, belong to protection scope of the present invention.
Claims (2)
1. a kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor, it is characterised in that including as follows
Step:
A. bulk silicon polishing is become powder first in laboratory base by Fe-6.5%Si alloy molten solution, is merged and 0.5% ~ 5%
Diboron trioxide and 1% ~ 3% nanometer cobalt sesquioxide powder collectively as additive；
B. furnace power supply is opened, nitrogen atmosphere is passed through, for volume between 50% ~ 90%, heating principle is usually that the slow low temperature of high temperature can fit
Degree is fast, general<400 DEG C can freely heat up, less than 100 DEG C/h, sample is larger to be kept at 800 DEG C heating speed at>800 DEG C
The processing of 30min samming is further continued for heating up, and in 850 DEG C ~ 1000 DEG C heat preservation 15min ~ 2h, temperature is higher, and time more germination is bigger,
Magnetic property increases mechanical properties decrease simultaneously, is cooled to 600 DEG C or less with furnace is cold or air-cooled drop with 80 DEG C/h cooling velocity later
To room temperature；
C. protective gas is closed, general supply takes out high silicon steel sample of annealing；
D. it rolls, the present invention uses warm-rolling technique；Determine that start rolling temperature at 450 DEG C or more, 380 DEG C of final rolling temperature or more, passes through
The reciprocal hot rolling of 3 passages is finally rolled into sample of the hot-rolled strip of 2.6 ~ 3mm of thickness as heat treatment experiment, and heat treatment is using box
Resistance furnace carries out；Slab carries out centering on the basis of rolling centerline, it is ensured that both ends and rolling centerline on width of plate slab direction
Distance it is consistent, to roll；
E. it makes annealing treatment；Steel plate is placed in annealing furnace, annealing temperature is located between 850 DEG C -1000 DEG C, and annealing time is
Between 60min-120min, room temperature is cooled to the furnace later, new-type high silicon Steel material needed for solid rotor is finally prepared.
2. preparation process according to claim 1, it is characterised in that: the alternating current asynchronous electricity that the new-type high silicon steel is applied to
The basic parameter of machine is as follows: rated power: the kW of PN=7. 5；Voltage rating: 380 V of UN=AC；Number of poles: 2p=4；Stator
Outer diameter: the mm of D2=210；Number of stator slots: Z=36；Core length: the mm of L=145.
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| CN201811448509.7A CN109266821A (en) | 2018-11-30 | 2018-11-30 | A kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor |
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| CN201811448509.7A CN109266821A (en) | 2018-11-30 | 2018-11-30 | A kind of preparation process of the new-type high silicon steel applied to AC induction motor solid rotor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807687A (en) * | 2006-01-26 | 2006-07-26 | 北京航空航天大学 | Process for preparing high silicon stalloy by pack siliconizing process |
| CN105296917A (en) * | 2015-11-23 | 2016-02-03 | 东北大学 | Method for preparing high-silicon steel from low-silicon steel |
| CN106783132A (en) * | 2016-12-26 | 2017-05-31 | 安徽工业大学 | A kind of silicon steel core high insulated between particle and preparation method thereof |
| CN107201479A (en) * | 2017-06-19 | 2017-09-26 | 东北大学 | A kind of warm-rolling technique of raising Fe 6.5%Si steel plate plasticity |
-
2018
- 2018-11-30 CN CN201811448509.7A patent/CN109266821A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807687A (en) * | 2006-01-26 | 2006-07-26 | 北京航空航天大学 | Process for preparing high silicon stalloy by pack siliconizing process |
| CN105296917A (en) * | 2015-11-23 | 2016-02-03 | 东北大学 | Method for preparing high-silicon steel from low-silicon steel |
| CN106783132A (en) * | 2016-12-26 | 2017-05-31 | 安徽工业大学 | A kind of silicon steel core high insulated between particle and preparation method thereof |
| CN107201479A (en) * | 2017-06-19 | 2017-09-26 | 东北大学 | A kind of warm-rolling technique of raising Fe 6.5%Si steel plate plasticity |
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Application publication date: 20190125 |