CN109136490A - A kind of orientation silicon steel environmental protection process equipment and environmental protection processing method - Google Patents
A kind of orientation silicon steel environmental protection process equipment and environmental protection processing method Download PDFInfo
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- CN109136490A CN109136490A CN201811133842.9A CN201811133842A CN109136490A CN 109136490 A CN109136490 A CN 109136490A CN 201811133842 A CN201811133842 A CN 201811133842A CN 109136490 A CN109136490 A CN 109136490A
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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
- C21D1/30—Stress-relieving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
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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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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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
- C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
- C21D3/02—Extraction of non-metals
- C21D3/04—Decarburising
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention discloses a kind of orientation silicon steel environmental protection process equipment and environmental protection processing methods, comprising the following steps: silicon steel thin belt is placed on the cold rolling handling rolls of the first cold-rolling mill by A., carries out cooling extrusion forming；B. silicon steel thin belt after molding enters annealing furnace progress high annealing work；D. the silicon steel thin belt after secondary pressurized enters the progress degreasing decarburization of decarburizing annealing coating unit, is rinsed after coating using hot water；E. silicon steel thin belt is transmitted to bell type annealing furnace and carries out high annealing, and the heating pipe that the recycle heat that bell type annealing furnace is distributed is transmitted to decarburizing annealing coating unit heats cold water.Degreasing decarburization and coating treatment drop to silicon steel phosphorus content in prescribed limit, improve magnetic levels, eliminate stress, improve the insulation performance and insulating coating adhesive force of orientation silicon steel, hot-gas recoverer collects the lost a large amount of thermal energy of bell type annealing furnace, accomplishes recycling for the energy, more environmentally-friendly.
Description
Technical field
The present invention relates to silicon steel manufacture field, in particular to a kind of orientation silicon steel environmental protection process equipment and environmentally friendly processing side
Method.
Background technique
China is since reform and opening-up, national economy high speed development, and the production of silicon steel and electrical apparatus industry have substantial connection, nothing
By being Generator Set or various motor, transformer, require largely to use silicon steel including all household electrical appliance
Piece.Orientation silicon steel refers to the high 3.5%(mass fraction of silicon content, similarly hereinafter) Antaciron, within this material with silicon member
The increase of cellulose content, material can express excellent soft magnet performance, as magnetic conductivity and resistance rate increases, iron loss reduces, mangneto is stretched
Contracting coefficient reduction etc. has the characteristics such as magnetic permeability is high, coercivity is low, resistance coefficient is big, thus magnetic hysteresis loss and eddy current loss are all
Small, setting lay-by material as the magnetic screen device and high-speed high frequency motor etc. manufactured under choking-winding, high frequency is to be very suitable for
, in the silicon steel process of existing orientation, lack necessary decarburization degreasing procedure of processing, so that silicon-steel magnetic and irony drop
It is low, and be mingled with impurity, annealing furnace clinker is unable to centralized collection, and annealing furnace can distribute when to silicon steel thin belt high annealing
A large amount of waste heat out, these heats scatter and disappear in vain, cannot recycle and decarbonizing process rinse when also to reheat cold water, cause
The waste of the energy cannot accomplish environmentally friendly processing, thus it is guaranteed that the good magnetic behavior of silicon steel and recycling silicon steel process
In scatter and disappear energy have a very important significance.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the defect of the prior art, a kind of orientation silicon steel environmental protection processing is provided and is set
Standby and environmental protection processing method, degreasing decarburization and coating treatment, silicon steel phosphorus content is dropped in prescribed limit, improves magnetic levels,
Stress is eliminated, hot-gas recoverer collects the lost a large amount of thermal energy of bell type annealing furnace, accomplishes recycling for the energy, more ring
It protects.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
A kind of orientation silicon steel environmental protection process equipment of the present invention, including the first cold-rolling mill, one end of first cold-rolling mill are connected with
Annealing furnace, the annealing furnace bottom are provided with clinker recycling bins, and the other end of the annealing furnace is connected with the second cold-rolling mill, described
The other end of second cold-rolling mill is connected with decarburizing annealing coating unit, and the front end face of the decarburizing annealing coating unit connects setting
There is heating pipe, the other end of the decarburizing annealing coating unit is connected with bell type annealing furnace, the anode of the bell type annealing furnace
Face is provided with hot-gas recoverer, and the other end of the bell type annealing furnace is connected with curling cutting machine.
As a preferred technical solution of the present invention, the top of the heating pipe is connected with appendix, the gas transmission
The outboard end socket of pipe is provided with hot-blast valve, and the other end of the appendix is connected with hot-gas recoverer.
A kind of orientation silicon steel environmental protection processing method of the invention, comprising the following steps:
A. silicon steel thin belt is placed on the cold rolling handling rolls of the first cold-rolling mill, conveying silicon steel thin belt enters the first cold-rolling mill for silicon
Steel strip carries out cooling extrusion forming；
B. silicon steel thin belt after molding enters annealing furnace progress high annealing work；
C. silicon steel thin belt enters the progress secondary cooling pressurization of the second cold-rolling mill；
D. the silicon steel thin belt after secondary pressurized enters the progress degreasing decarburization of decarburizing annealing coating unit, is carried out after coating using hot water
It rinses；
E. silicon steel thin belt is transmitted to bell type annealing furnace and carries out high annealing, and the recycle heat that bell type annealing furnace is distributed is transmitted to
The heating pipe of decarburizing annealing coating unit heats cold water；
F. silicon steel thin belt curling cutting machine is sent to be sheared and crimped.
As a preferred technical solution of the present invention, silicon steel thin belt is in decarburizing annealing coating to through most in the step D
Orientation silicon steel thin belt after whole cold rolling carries out belt steel surface degreasing, carries out decarburizing annealing under protective atmosphere and primary recrystallization moves back
Fire will drop in prescribed limit with carbon content of steel, carry out Nitrizing Treatment to strip, apply magnesia separation layer to belt steel surface,
The SiO film of even compact is formed in steel strip surface.
As a preferred technical solution of the present invention, bell type annealing furnace gives out a large amount of residual heat collections in the step E
To hot-gas recoverer, it is transmitted in heating pipe and heats cold water.
Compared with prior art, beneficial effects of the present invention are as follows:
The present invention prevents clinker adverse effect caused by surrounding enviroment by centralized collection annealing furnace clinker, is convenient to clean, warp
It crosses decarburizing annealing coating unit and degreasing decarburization and coating treatment is carried out to silicon steel thin belt, silicon steel phosphorus content is dropped into prescribed limit
Interior, so that treated, silicon steel crystal grain is grown up, and improves magnetic levels, is eliminated stress, will be dropped in prescribed limit with carbon content of steel,
The Silicon-rich film of silica is formed on surface, 1050 DEG C or so is heated to and reacts with magnesium oxide coating, in surface of silicon steel
One layer of vitreous magnesium-silicate bottom is formed, to improve the insulation performance and insulating coating adhesive force of orientation silicon steel, hot gas recycling dress
It sets and collects the lost a large amount of thermal energy of bell type annealing furnace, and be transported in heating pipe, heating cold water is used for decarburizing annealing coating machine
Group accomplishes recycling for the energy, thermal energy is prevented to scatter and disappear in vain to the hot water injection of silicon steel, the product phase with conventional method preparation
Than the magnetic property of the silicon plate of method preparation of the invention is good, and the combination of nitridation steps and high-temperature annealing step is not
It causes product magnetic property to decline, while simplifying production technology, save production cost, improve working efficiency, it is more environmentally-friendly.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is overall structure diagram of the invention；
In figure: 1, the first cold-rolling mill；2, annealing furnace；3, clinker recycling bins；4, the second cold-rolling mill；5, decarburizing annealing coating unit；
6, heating pipe；7, bell type annealing furnace；8, hot-gas recoverer；9, cutting machine is crimped；10, appendix；11, hot-blast valve.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Wherein identical label all refers to identical component in attached drawing.
In addition, if the detailed description of known technology is then omitted it for showing the invention is characterized in that unnecessary.
It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer in attached drawing
Direction, word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.
Embodiment 1
As shown in Figure 1, the present invention provides a kind of orientation silicon steel environmental protection process equipment, including the first cold-rolling mill 1, the first cold-rolling mill 1
One end be connected with annealing furnace 2,2 bottom of annealing furnace is provided with clinker recycling bins 3, and it is cold that the other end of annealing furnace 2 is connected with second
Milling train 4, the other end of the second cold-rolling mill 4 are connected with decarburizing annealing coating unit 5, and the front end face of decarburizing annealing coating unit 5 connects
It connects and is provided with heating pipe 6, the other end of decarburizing annealing coating unit 5 is connected with bell type annealing furnace 7, and bell type annealing furnace 7 is just
End face is provided with hot-gas recoverer 8, and the other end of bell type annealing furnace 7 is connected with curling cutting machine 9.
The top of heating pipe 6 is connected with appendix 10, and the outboard end socket of appendix 10 is provided with hot-blast valve 11, gas transmission
The other end of pipe 10 is connected with hot-gas recoverer 8.
The present invention provides a kind of orientation silicon steel environmental protection processing method, comprising the following steps:
A. silicon steel thin belt is placed on the cold rolling handling rolls of the first cold-rolling mill 1, conveying silicon steel thin belt will into the first cold-rolling mill 1
Silicon steel thin belt carries out cooling extrusion forming, rolls blank thickness through the medium reduction ratio of first time cold-rolling mill (30%~60%)；
B. silicon steel thin belt after molding enters the progress high annealing work of annealing furnace 2, and the furnace of annealing furnace is made by the circulation of blower
Cavity temperature is evenly distributed, and improves annealing efficiency, recombinates thin-film material microstructure by heat treatment, improves stability and turns
Change efficiency, casting is heated to 950 DEG C or so, it is suitably cooling after held for some time, it is thin for silicon steel to eliminate internal stress
With 100~200 DEG C below the temperature for initially forming austenite after heating, is cooled down in air after heat preservation, internal stress can be eliminated；
C. silicon steel thin belt enters the progress secondary cooling pressurization of the second cold-rolling mill 4, through the medium reduction ratio (40% of No. second cold-rolling mill
~70%) finished product thickness is rolled, passes through intermediate annealing between cold rolling twice, so that silicon steel iron loss is low, magnetic strength is high；
D. the silicon steel thin belt after secondary pressurized enters decarburizing annealing coating unit 5 and carries out degreasing decarburization, after coating using hot water into
Row rinses, and carries out degreasing carbonization treatment, and coating magnesia separation layer；
E. silicon steel thin belt is transmitted to bell type annealing furnace 7 and carries out high annealing, and the recycle heat that bell type annealing furnace 7 is distributed transmits
Heating pipe 6 to decarburizing annealing coating unit 5 heats cold water, recycles the heat that bell type annealing furnace 7 gives out, prevents heat
Amount is lost in vain；
F. silicon steel thin belt curling cutting machine 9 is sent to be sheared and crimped.
Silicon steel thin belt carries out the orientation silicon steel thin belt after final cold rolling in decarburizing annealing coating unit 5 in step D
Belt steel surface degreasing carries out decarburizing annealing and primary recrystallization annealing under protective atmosphere, regulation model will be dropped to carbon content of steel
In enclosing, Nitrizing Treatment is carried out to strip, magnesia separation layer is applied to belt steel surface, forms even compact in steel strip surface
SiO2 film.
Bell type annealing furnace 7 gives out a large amount of residual heat collections to hot-gas recoverer 8 in step E, is transmitted in heating pipe 6
Heat cold water.
Specifically, silicon steel thin belt is placed on the cold rolling handling rolls of the first cold-rolling mill 1, conveying silicon steel thin belt enters first
Silicon steel thin belt is carried out cooling extrusion forming by cold-rolling mill 1, through the medium reduction ratio of first time cold-rolling mill (30%~60%) roll half at
Product thickness；
Silicon steel thin belt after molding enters annealing furnace 2 and carries out high annealing work, and the furnace chamber of annealing furnace is made by the circulation of blower
Interior uniformity of temperature profile, improves annealing efficiency, recombinates thin-film material microstructure by heat treatment, improves stability and conversion
Casting is heated to 950 DEG C or so by efficiency, suitably cooling after held for some time, to eliminate internal stress, for silicon steel thin belt
100~200 DEG C of the temperature of austenite or less are initially formed after heating, is cooled down in air after heat preservation, can eliminate internal stress, instead
Slag collection after answering prevents clinker adverse effect caused by surrounding enviroment in clinker recycling bins 3；
Silicon steel thin belt enters the second cold-rolling mill 4 and carries out secondary cooling pressurization, through No. second medium reduction ratio of cold-rolling mill (40%~
70%) finished product thickness is rolled, is annealed between cold rolling by intermediate annealing furnace 2 twice, so that silicon steel iron loss is low, magnetic strength is high；
Silicon steel thin belt after secondary pressurized enters decarburizing annealing coating unit 5 and carries out degreasing decarburization, is carried out after coating using hot water
It rinses, in high annealing, steel disc is heated to 950 DEG C or so i.e. initial recrystallization, so as to make silicon steel obtain suitable crystal grain
Degree improves the degree of orientation, improves magnetic, final decarburizing annealing, and Silicon-rich film of the surface of silicon steel formation containing silica is heated to
1050 DEG C or so it react with magnesia, surface formed one layer of vitreous magnesium-silicate bottom, improve the exhausted of orientation silicon steel
Edge performance and insulating coating adhesive force, and can exclude to be mingled with, purify steel, manganese sulfide (MnS) and aluminium nitride in orientation silicon steel
(AIN) etc. favorably it is mingled with, is decomposed after promoting secondary recrystallization to form crystallization nuclei, crystal grain is grown up, improving the degree of orientation, with
The further raising of temperature, being favorably mingled with during high temperature soak will be removed so that the steel of silicon steel is purified, with
Magnetism is improved, hot water injection is carried out to silicon steel by heating pipe later；
Silicon steel thin belt is transmitted to bell type annealing furnace 7 and carries out high annealing, is first passed through nitrogen and drives furnace air away, is then electrified to add
Heat is heated to keeping the temperature 5~21h at 600 DEG C, then heat at full speed, and maximum heating speed is 26 DEG C/h between 600~1210 DEG C,
20h is kept the temperature at 1210 DEG C, notices that the ingredient of gas and flow should meet the requirement of high temperature anneal operation regulation, while bell-type being moved back
The heating pipe 6 that the recycle heat that stove 7 is distributed to outside is transmitted to decarburizing annealing coating unit 5 heats cold water, recycles
The heat that bell type annealing furnace 7 gives out, prevents heat to be lost in vain, and silicon steel thin belt is finally sent to curling cutting machine 9 and is carried out
Shearing and curling.
In conclusion the present invention prevents clinker bad shadow caused by surrounding enviroment by 2 clinker of centralized collection annealing furnace
It rings, is convenient to clean, degreasing decarburization and coating treatment are carried out to silicon steel thin belt by decarburizing annealing coating unit 5, silicon steel is carbon containing
Amount drops in prescribed limit, so that treated, silicon steel crystal grain is grown up, and improves magnetic levels, eliminates stress, will be with carbon content of steel
It drops in prescribed limit, forms the Silicon-rich film of silica on surface, be heated to 1050 DEG C or so and occur with magnesium oxide coating
Reaction forms one layer of vitreous magnesium-silicate bottom in surface of silicon steel, attached with the insulation performance and the insulating coating that improve orientation silicon steel
Put forth effort, hot-gas recoverer 8 collects the lost a large amount of thermal energy of bell type annealing furnace, and is transported in heating pipe 6, and heating cold water is used
In decarburizing annealing coating unit 5 finally to the hot water injection of silicon steel, accomplishes recycling for the energy, thermal energy is prevented to scatter and disappear in vain,
Compared with the product of conventional method preparation, the magnetic property of the silicon plate of method preparation of the invention is good, and nitriding is moved back with high temperature
The combination of fiery step does not cause product magnetic property to decline, while simplifying production technology, saves production cost, improves work
Make efficiency, it is more environmentally-friendly.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of orientation silicon steel environmental protection process equipment, including the first cold-rolling mill (1), which is characterized in that first cold-rolling mill (1)
One end be connected with annealing furnace (2), annealing furnace (2) bottom is provided with clinker recycling bins (3), the annealing furnace (2) it is another
One end is connected with the second cold-rolling mill (4), and the other end of second cold-rolling mill (4) is connected with decarburizing annealing coating unit (5), institute
The front end face for stating decarburizing annealing coating unit (5) is connected with heating pipe (6), the decarburizing annealing coating unit (5)
The other end is connected with bell type annealing furnace (7), and the front end face of the bell type annealing furnace (7) is provided with hot-gas recoverer (8), described
The other end of bell type annealing furnace (7) is connected with curling cutting machine (9).
2. a kind of orientation silicon steel environmental protection process equipment according to claim 1, which is characterized in that the heating pipe (6)
Top be connected with appendix (10), the socket of the outboard end of the appendix (10) is provided with hot-blast valve (11), the appendix
(10) the other end is connected with hot-gas recoverer (8).
3. a kind of orientation silicon steel environmental protection processing method, comprising the following steps:
A. silicon steel thin belt is placed on the cold rolling handling rolls of the first cold-rolling mill (1), conveying silicon steel thin belt enters the first cold-rolling mill
(1) silicon steel thin belt is subjected to cooling extrusion forming；
B. silicon steel thin belt after molding enters annealing furnace (2) progress high annealing work；
C. silicon steel thin belt enters the second cold-rolling mill (4) progress secondary cooling pressurization；
D. the silicon steel thin belt after secondary pressurized enters decarburizing annealing coating unit (5) progress degreasing decarburization, uses hot water after coating
It is rinsed；
E. silicon steel thin belt is transmitted to bell type annealing furnace (7) and carries out high annealing, and the recycle heat that bell type annealing furnace (7) is distributed
The heating pipe (6) for being transmitted to decarburizing annealing coating unit (5) heats cold water；
F. silicon steel thin belt curling cutting machine (9) is sent to be sheared and crimped.
4. a kind of orientation silicon steel environmental protection processing method according to claim 3, which is characterized in that silicon steel in the step D
Strip carries out belt steel surface degreasing to the orientation silicon steel thin belt after final cold rolling in decarburizing annealing coating unit (5), is protecting
It protects under atmosphere and carries out decarburizing annealing and primary recrystallization annealing, will be dropped in prescribed limit with carbon content of steel, strip is seeped
Nitrogen processing applies magnesia separation layer to belt steel surface, forms the SiO2 film of even compact in steel strip surface.
5. a kind of orientation silicon steel environmental protection processing method according to claim 3, which is characterized in that bell-type in the step E
Annealing furnace (7) gives out a large amount of residual heat collections to hot-gas recoverer (8), is transmitted in heating pipe (6) and heats cold water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133842.9A CN109136490A (en) | 2018-09-27 | 2018-09-27 | A kind of orientation silicon steel environmental protection process equipment and environmental protection processing method |
Applications Claiming Priority (1)
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| CN117887955A (en) * | 2024-03-15 | 2024-04-16 | 包头市威丰稀土电磁材料股份有限公司 | Process control method for normalizing non-oriented electrical steel by adopting single high-temperature annealing furnace |
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