CN108213077A - The method of cold rolling >=2.5%Si high silicon steel - Google Patents
The method of cold rolling >=2.5%Si high silicon steel Download PDFInfo
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/02—Roll dimensions
- B21B2267/06—Roll diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/10—Roughness of roll surface
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Abstract
The present invention relates to the methods of cold rolling >=2.5%Si high silicon steel, directly carry out upper machine rolling after steel blank steel coils uncoiling using six-high cluster mill, and cold rolling is carried out using once cold rolling method or secondary cold-rolling method；Technological lubrication and cooling are carried out using emulsion spray in the operation of rolling, the emulsification flow quantity that each passage enters side is 1000~6000L/min, and the emulsification flow quantity that each passage goes out side completely closes, and controls the rolling deformation temperature of each passage at 100~300 DEG C；It is batched after the completion of rolling.The present invention can realize >=2.5%Si high silicon steel cold rollings using conventional six-high cluster mill, and six-high cluster mill can realize continuous rolling, it is not necessary to which frequent roll change, production efficiency improve 30%；Six-high cluster mill length of contact in rolling in cold-rolled process is longer, and rate of deformation is relatively small, and plastic deformation is not violent, and for rolled piece without strip shape quality defect, product surface quality is good.
Description
Technical field
This application involves a kind of silicon steel milling methods, and in particular to a kind of method of cold rolling >=2.5%Si high silicon steel.
Background technology
With the raising of silicone content, magnetism, the resistivity of silicon steel improve, and iron loss declines to a great extent, but when silicone content >=
When 2.0%, resistance of deformation during cold rolling is big, and plastic deformation is difficult, and broken belt accident easily occurs for when cold rolling, not easily passs through conventional four
Roller or six roller pickling continuous-rollings carry out cold rolling.Therefore, the high grade non-oriented silicon steel and orientation of >=2.5%Si high silicon contents
Silicon steel generally carries out reversible cold-rolling in mill；But mill because roll system structure complexity, production maintenance difficulty compared with
Greatly, roll change is frequent, low production efficiency, and the flatness defects such as No. 2 waves, Bian Lang, raised lines are more.
Six-high cluster mill has the characteristics that production efficiency is high, but six-high cluster mill work roll diameter is larger, in the 1st, 2 passes
Afterwards, edge raw edges is intensive, and under hightension, crackle is extremely sensitive at breach, rapid to extend, and be easy to cause brittleness broken belt；In addition,
Roll-force and bending roller force during thin slab product cold rolling is larger, and milling equipment working condition is close to the limit.
Therefore, for the high grade non-oriented silicon steel and orientation silicon steel of >=2.5%Si high silicon contents, lacked in the industry it is a kind of both
It can guarantee that high efficiency can realize the milling method of high strip shape quality again.
Invention content
In order to solve the above technical problems, the present invention provides a kind of method of cold rolling >=2.5%Si high silicon steel, using routine
Six-high cluster mill can realize >=2.5%Si high silicon steel cold rollings, and production efficiency is high, Strip Shape Control is accurate, surface quality is good, solve current
The problem of high silicon steel low production efficiency of Thin Specs and bad plate shape.
Technical solution is the method for a kind of cold rolling >=2.5%Si high silicon steel, including such as used by realizing the object of the invention
Lower step：
Steel blank steel coils uncoiling exports blank steel band, upper machine rolling is directly carried out to blank steel band using six-high cluster mill, described
The work roll diameter of six-high cluster mill is 240~320mm；
Technological lubrication is carried out to blank steel band using emulsion spray in the operation of rolling and cooling, each passage enter side
Emulsification flow quantity is 1000~6000L/min, and the emulsification flow quantity that each passage goes out side completely closes, and controls the rolling of each passage
Deformation temperature is at 100~300 DEG C；
Finished product steel belt is obtained after the completion of the rolling, finished product steel belt is batched.
Further, the rolling specifically carries out cold rolling using once cold rolling method or secondary cold-rolling method.
Further, it is described to be included using the progress cold rolling of secondary cold-rolling method：
After the completion of blank steel band first time cold rolling, by blank steel band through intermediate annealing decarburization, then second of cold rolling is carried out, obtained
To finished product steel belt.
Further, it is described to be included using the progress cold rolling of once cold rolling method：
Using three passage more than cold-rolling process, the reduction ratio of the first passage is controlled 30%~45%, control extreme trace time
18%~31%, the reduction ratio of remaining each passage is controlled 25%~42% reduction ratio.
Further, the once cold rolling method or the secondary cold-rolling method are described using continuous using fully continuous rolling
The particular content of formula rolling is after current steel blank steel coils carry out last passes, to continue to roll next base using the working roll
Expect coil of strip, each pair of working roll is carried out continuously " cogging+finished product " each passes.
Further, after the steel blank steel coils uncoiling, normalizing pickling is carried out to the blank steel band of output, uses six-high cluster mill
Upper machine rolling is directly carried out to blank steel band.
Further, the rolling further includes：
Automatic strip shape control is carried out, inlet segment cooling automatically controls work roll thermal crown；Intermediate calender rolls bending roller force 200~
500kN, 0~120mm of axial roll shifting amount；Using the target flatness curve of biquadratic function.
Further, described each passage enters side 50~240MPa of unit tension when being batched to finished product steel belt, goes out side list
Position 160~240MPa of tension；10~18MN of roll-force, 600~950mpm of stable rolling speed.
Further, the working roll uses forged steel, semi-high speed steel or high speed steel material.
Further, the surface roughness of the working roll is 0.4~1.0 μm.
As shown from the above technical solution, the method for cold rolling provided by the invention >=2.5%Si high silicon steel, using six-high cluster mill
Progress >=2.5%Si high silicon steel cold rollings, since six-high cluster mill can realize continuous rolling, it is not necessary to which frequent roll change, production efficiency improve
30%, the related defects of mill can be solved, improve production efficiency and strip shape quality.
Six-high cluster mill work roll diameter is 240~320mm, relative to 60~85mm of mill work roll diameter, six
Roller mill length of contact in rolling in cold-rolled process is longer, and rate of deformation is relatively small, is plastically deformed inviolent, steel band temperature
When spending relatively low, there is breach in the range of deformed area after rolling, the probability that broken belt occurs is smaller, in tolerance interval, therefore
It need not be preheated after steel blank steel coils uncoiling, the blank steel band of output can directly go up six-high cluster mill and be rolled, compared to existing
High silicon steel cold rolling process needs first to preheat the steel plate of uncoiling before the rolling, and the present invention can reduce >=2.5%Si high silicon steel
The energy consumption of production, and the production cycle is shorter, and technique is simpler.
Each passage enters side emulsion flow control in 1000~6000L/min, goes out side emulsification flow quantity and completely closes, product
Tired deformation thermal effect is good, and temperature of steel strips is up to 300 DEG C or more (about 200 DEG C of mills).By accurately controlling emulsion
Cooling effect makes the control of each passes deformation temperature at 100~300 DEG C, and plastic deformation accounts for leading, prevents brittleness and breaks
Band, while the timeliness rolling of high magnetic induction grain-oriented silicon steel is realized, reach the covering of more steel grades, more specification cold-rolling process.By upper
Processing step is stated, effectively overcomes six-high cluster mill work roll diameter larger, after the 1st, 2 passes, edge raw edges is intensive, big
Under tension, crackle is extremely sensitive at breach, the defects of extending rapidly, be easy to cause brittleness broken belt so that and six-high cluster mill cold rolling >=
2.5%Si high silicon steel is possibly realized.
Specific embodiment
In order to which the application the technical staff in the technical field is made to be more clearly understood that the application, below by specific reality
Example is applied to be described in detail technical scheme.
Embodiment 1：
Using the method for cold rolling provided by the invention >=2.5%Si high silicon steel, cold rolling 3.21%Si high magnetic induction grain-oriented silicon steels,
Its cold-rolling process is：
Steel blank steel coils uncoiling, exports blank steel band, and the blank steel band of uncoiling carries out normalizing pickling, blank steel without preheating
Tape thickness 2.3mm；
Upper machine rolling is directly carried out using six-high cluster mill after carrying out normalizing pickling, the work roll diameter of six-high cluster mill is
289mm, working roll use forged steel, semi-high speed steel or high speed steel material, and surface roughness is controlled at 0.4~1.0 μm；
Cold rolling is carried out using once cold rolling method, total percentage pass reduction 18%~44% rolls rear product thickness 0.30mm, specifically
For：Five passage cold-rolling process control the reduction ratio of the first passage 30%~44%, the reduction ratio of control extreme trace time 18%~
31%, the reduction ratio of remaining each passage is controlled 25%~42%；
Once cold rolling method uses fully continuous rolling in the present embodiment, i.e., after current steel blank steel coils carry out last passes, adopts
Continued to roll next steel blank steel coils with the working roll, it is not necessary to it often rolls up steel blank steel coils and all carries out changing jobs in the case of roller, it is each pair of
Working roll is carried out continuously " cogging+finished product " passes, and completing multiple steel blank steel coils, the continuous of each passage rolls from beginning to end successively
System；
Technological lubrication is carried out using emulsion spray in the operation of rolling and cooling, each passage enter the emulsion flow control of side
In 2000~3000L/min, the emulsification flow quantity that each passage goes out side completely closes；Every time rolling deformation temperature 150~
201℃；
Automatic strip shape control is carried out in the operation of rolling, inlet segment cooling automatically controls work roll thermal crown；Intermediate roll bending
200~500kN of roller power, 0~120mm of axial roll shifting amount；Using the target flatness curve of biquadratic function；
Rolling after the completion of obtain finished product steel belt, finished product steel belt is batched, each passage enter side unit tension 50~
240MPa goes out side 160~240MPa of unit tension；10~18MN of roll-force, 600~950mpm of stable rolling speed；According to normal
Process after rule carry out.
By the 3.21%Si high magnetic induction grain-oriented silicon steels after above-mentioned technique cold rolling, plate shape value is controlled in -8~+4I, finished product steel belt
It is straight；Thickness and precision ± 5 μm；Without strip shape quality defect, product quality is good.
Embodiment 2：
Using the method for cold rolling provided by the invention >=2.5%Si high silicon steel, cold rolling 3.21%Si high magnetic induction grain-oriented silicon steels,
Its cold-rolling process is：
Steel blank steel coils uncoiling, exports blank steel band, and the blank steel band of uncoiling carries out normalizing pickling, blank steel without preheating
Tape thickness 2.3mm；
Upper machine rolling is directly carried out using six-high cluster mill after carrying out normalizing pickling, the work roll diameter of six-high cluster mill is
289mm, working roll use forged steel, semi-high speed steel or high speed steel material, and surface roughness is controlled at 0.4~1.0 μm；
Cold rolling is carried out using once cold rolling method, total percentage pass reduction 18%~44% rolls rear product thickness 0.270mm, has
Body is：Six passage cold-rolling process control the reduction ratio of the first passage 30%~44%, and the reduction ratio of control extreme trace time is 18%
~31%, the reduction ratio of remaining each passage is controlled 25%~42%；
Once cold rolling method uses fully continuous rolling in the present embodiment, i.e., after current steel blank steel coils carry out last passes, adopts
Continued to roll next steel blank steel coils with the working roll, it is not necessary to it often rolls up steel blank steel coils and all carries out changing jobs in the case of roller, it is each pair of
Working roll is carried out continuously " cogging+finished product " passes, and completing multiple steel blank steel coils, the continuous of each passage rolls from beginning to end successively
System；
Technological lubrication is carried out using emulsion spray in the operation of rolling and cooling, each passage enter the emulsion flow control of side
In 2000~3000L/min, the emulsification flow quantity that each passage goes out side completely closes；Every time rolling deformation temperature 154~
202℃；
Automatic strip shape control is carried out in the operation of rolling, inlet segment cooling automatically controls work roll thermal crown；Intermediate roll bending
200~500kN of roller power, 0~120mm of axial roll shifting amount；Using the target flatness curve of biquadratic function；
Rolling after the completion of obtain finished product steel belt, finished product steel belt is batched, each passage enter side unit tension 50~
240MPa goes out side 160~240MPa of unit tension；10~18MN of roll-force, 600~950mpm of stable rolling speed；According to normal
Process after rule carry out.
By the 3.21%Si high magnetic induction grain-oriented silicon steels after above-mentioned technique cold rolling, plate shape value is controlled in -6~+3I, finished product steel belt
It is straight；Thickness and precision ± 5 μm；Without strip shape quality defect, product quality is good.
Embodiment 3：
Using the method for cold rolling provided by the invention >=2.5%Si high silicon steel, the general orientation silicon steels of cold rolling 3.17%Si,
Cold-rolling process is：
Steel blank steel coils uncoiling, exports blank steel band, and the blank steel band of uncoiling carries out normalizing pickling, blank steel without preheating
Tape thickness 2.3mm；
Upper machine rolling is directly carried out using six-high cluster mill after carrying out normalizing pickling, the work roll diameter of six-high cluster mill is
294mm, working roll use forged steel, semi-high speed steel or high speed steel material, and surface roughness is controlled at 0.4~1.0 μm；
Cold rolling is carried out using secondary cold-rolling method, rolls rear product thickness 0.30mm, specially：Carry out first time cold rolling, passage
Reduction ratio 25%~44%；Through intermediate annealing decarburization；Carry out second of cold rolling, percentage pass reduction 18%~31%；
Secondary cold-rolling method uses fully continuous rolling in the present embodiment, i.e., after current steel blank steel coils carry out last passes, adopts
Continued to roll next steel blank steel coils with the working roll, it is not necessary to it often rolls up steel blank steel coils and all carries out changing jobs in the case of roller, it is each pair of
Working roll is carried out continuously " cogging+finished product " passes, and completing multiple steel blank steel coils, the continuous of each passage rolls from beginning to end successively
System；
Technological lubrication is carried out using emulsion spray in the operation of rolling and cooling, each passage enter the emulsion flow control of side
In 1000~3000L/min, the emulsification flow quantity that each passage goes out side completely closes；Every time rolling deformation temperature 120~
189℃；
Automatic strip shape control is carried out in the operation of rolling, inlet segment cooling automatically controls work roll thermal crown；Intermediate roll bending
200~500kN of roller power, 0~120mm of axial roll shifting amount；Using the target flatness curve of biquadratic function；
Rolling after the completion of obtain finished product steel belt, finished product steel belt is batched, each passage enter side unit tension 50~
240MPa goes out side 160~240MPa of unit tension；10~18MN of roll-force, 600~950mpm of stable rolling speed；According to normal
Process after rule carry out.
The orientation silicon steel by the 3.17%Si after above-mentioned technique cold rolling, plate shape value are controlled in -7~+4I, and finished product steel belt is put down
Directly；Thickness and precision ± 4 μm；Without strip shape quality defect, product quality is good.
Embodiment 4：
Using the method for cold rolling provided by the invention >=2.5%Si high silicon steel, the high grade non-oriented silicon of cold rolling 3.24%Si
Steel, cold-rolling process are：
Steel blank steel coils uncoiling, exports blank steel band, and the blank steel band of uncoiling carries out normalizing pickling, blank steel without preheating
Tape thickness 2.2mm；
Upper machine rolling is directly carried out using six-high cluster mill after carrying out normalizing pickling, the work roll diameter of six-high cluster mill is
312mm, working roll use forged steel, semi-high speed steel or high speed steel material, and surface roughness is controlled at 0.4~1.0 μm；
Cold rolling is carried out using secondary cold-rolling method, rolls rear product thickness 0.5mm, specially：Carry out first time cold rolling, passage pressure
Lower rate 25%~44%；Through intermediate annealing decarburization；Carry out second of cold rolling, percentage pass reduction 18%~31%；
Secondary cold-rolling method uses fully continuous rolling in the present embodiment, i.e., after current steel blank steel coils carry out last passes, adopts
Continued to roll next steel blank steel coils with the working roll, it is not necessary to it often rolls up steel blank steel coils and all carries out changing jobs in the case of roller, it is each pair of
Working roll is carried out continuously " cogging+finished product " passes, and completing multiple steel blank steel coils, the continuous of each passage rolls from beginning to end successively
System；
Technological lubrication is carried out using emulsion spray in the operation of rolling and cooling, each passage enter the emulsion flow control of side
In 2000~3000L/min, the emulsification flow quantity that each passage goes out side completely closes；Every time rolling deformation temperature 120~
196℃；
Automatic strip shape control is carried out in the operation of rolling, inlet segment cooling automatically controls work roll thermal crown；Intermediate roll bending
200~500kN of roller power, 0~120mm of axial roll shifting amount；Using the target flatness curve of biquadratic function；
Rolling after the completion of obtain finished product steel belt, finished product steel belt is batched, each passage enter side unit tension 50~
240MPa goes out side 160~240MPa of unit tension；10~18MN of roll-force, 600~950mpm of stable rolling speed；According to normal
Process after rule carry out.
By the 3.24%Si high grade non-oriented silicon steels after above-mentioned technique cold rolling, plate shape value is controlled in -5~+0I, finished steel
With straight；Thickness and precision ± 5 μm；Without strip shape quality defect, product quality is good.
Embodiment 5：
Using the method for cold rolling provided by the invention >=2.5%Si high silicon steel, the high grade non-oriented silicon of cold rolling 3.24%Si
Steel, cold-rolling process are：
Steel blank steel coils uncoiling, exports blank steel band, and the blank steel band of uncoiling carries out normalizing pickling, blank steel without preheating
Tape thickness 2.2mm；
Upper machine rolling is directly carried out using six-high cluster mill after carrying out normalizing pickling, the work roll diameter of six-high cluster mill is
320mm, working roll use forged steel, semi-high speed steel or high speed steel material, and surface roughness is controlled at 0.4~1.0 μm；
Cold rolling is carried out using once cold rolling method, total percentage pass reduction 18%~44% rolls rear product thickness 0.5mm, specifically
For：Four-pass cold-rolling process controls the reduction ratio of the first passage 30%~44%, the reduction ratio of control extreme trace time 18%~
31%, the reduction ratio of remaining each passage is controlled 25%~42%；
Once cold rolling method uses fully continuous rolling in the present embodiment, i.e., after current steel blank steel coils carry out last passes, adopts
Continued to roll next steel blank steel coils with the working roll, it is not necessary to it often rolls up steel blank steel coils and all carries out changing jobs in the case of roller, it is each pair of
Working roll is carried out continuously " cogging+finished product " passes, and completing multiple steel blank steel coils, the continuous of each passage rolls from beginning to end successively
System；
Technological lubrication is carried out using emulsion spray in the operation of rolling and cooling, each passage enter the emulsion flow control of side
In 2000~3000L/min, the emulsification flow quantity that each passage goes out side completely closes；Every time rolling deformation temperature 150~
198℃；
Automatic strip shape control is carried out in the operation of rolling, inlet segment cooling automatically controls work roll thermal crown；Intermediate roll bending
200~500kN of roller power, 0~120mm of axial roll shifting amount；Using the target flatness curve of biquadratic function；
Rolling after the completion of obtain finished product steel belt, finished product steel belt is batched, each passage enter side unit tension 50~
240MPa goes out side 160~240MPa of unit tension；10~18MN of roll-force, 600~950mpm of stable rolling speed；According to normal
Process after rule carry out.
By the 3.24%Si high grade non-oriented silicon steels after above-mentioned technique cold rolling, plate shape value is controlled in -5~+0I, finished steel
With straight；Thickness and precision ± 5 μm；Without strip shape quality defect, product quality is good.
The method for cold rolling >=2.5%Si high silicon steel that certain steel plant is provided using above-described embodiment, using conventional six rollings
Machine can realize >=2.5%Si high silicon steel cold rollings, and the covering of product variety technique is complete, and production efficiency improves 30%, no plate
Shape mass defect, surface quality are good.High grade non-oriented silicon steel and HiB steel can be produced, production efficiency improves 30%, creates
Ten thousand yuan of year 1.5 × 30% × 3000=1350 of benefit.
By above-described embodiment, the invention has the advantages that advantage：
1) method of cold rolling provided by the invention >=2.5%Si high silicon steel, pickling normalizing coil of strip is without preheating；Surface is thick
Rugosity is controlled at 0.4~1.0 μm, and each passage stable rolling is non-slip, the continuous multireel rolling of extreme trace time not roll change, surface quality
Good, production efficiency is high.
2) method of cold rolling provided by the invention >=2.5%Si high silicon steel, it is proposed that a kind of high silicon steel cold rolling new process,
It improves production efficiency, surface quality, strip shape quality, prevent brittle failure etc. significant effect, and produce reality application has been put into.
In addition, this method can not only roll silicon steel, in terms of other metal plate and belts such as rolling stainless steel, straight carbon steel, also have very strong excellent
Gesture, product covering surface are wider.
3) method of cold rolling provided by the invention >=2.5%Si high silicon steel can realize >=2.5% using conventional six-high cluster mill
Si high silicon steel cold rollings, six-high cluster mill can realize continuous rolling, it is not necessary to which frequent roll change, production efficiency improve 30%, no plate form quality
Defect is measured, surface quality is good.
4) method of cold rolling provided by the invention >=2.5%Si high silicon steel, can be not only used for orientation silicon steel and once rolls
Method can be also used for a rolling of other silicon steel kinds such as high grade non-oriented silicon steel and secondary rolling, product product
Kind technique covering is complete.
5) method of cold rolling provided by the invention >=2.5%Si high silicon steel, the first percentage pass reduction of control 30%~
45%, it is to infiltrate into thickness of strips center to be plastically deformed, so as to the crystal grain grown up after crash high temperature normalizing, roll
Rao Du deformations make steel band edge compression chord, and the 1st, after 2 passes, without raw edges brittleness broken belt does not occur for edge.
6) method of cold rolling provided by the invention >=2.5%Si high silicon steel, using the target flatness curve of biquadratic function, plate
Shape value is controlled in -8~+4I, and steel band is straight.
7) method of cold rolling provided by the invention >=2.5%Si high silicon steel is, it can be achieved that six-high cluster mill once cold rolling method cold rolling
The high silicon steel of below 0.3mm product thicknesses, break six-high cluster mill under the conditions of prior art be difficult to once cold rolling method cold rolling 0.3mm with
The technology yoke of the high silicon steel of lower product thickness.
Although the preferred embodiment of the application has been described, one of ordinary skilled in the art once knows substantially
Creative concept, then additional changes and modifications may be made to these embodiments.So appended claims are intended to be construed to wrap
It includes preferred embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application
God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. the method for a kind of cold rolling >=2.5%Si high silicon steel, which is characterized in that include the following steps：
Steel blank steel coils uncoiling exports blank steel band, upper machine rolling, six roller is directly carried out to blank steel band using six-high cluster mill
The work roll diameter of milling train is 240~320mm；
Technological lubrication is carried out to blank steel band using emulsion spray in the operation of rolling and cooling, each passage enter the emulsification of side
Flow quantity is 1000~6000L/min, and the emulsification flow quantity that each passage goes out side completely closes, and controls the rolling deformation of each passage
Temperature is at 100~300 DEG C；
Finished product steel belt is obtained after the completion of the rolling, finished product steel belt is batched.
2. the method for cold rolling as described in claim 1 >=2.5%Si high silicon steel, it is characterised in that：The rolling is specific to be used
Once cold rolling method or secondary cold-rolling method carry out cold rolling.
3. the method for cold rolling as claimed in claim 2 >=2.5%Si high silicon steel, it is characterised in that：It is described to use secondary cold-rolling
Method carries out cold rolling and includes：
After the completion of blank steel band first time cold rolling, by blank steel band through intermediate annealing decarburization, then second of cold rolling is carried out, obtained into
Product steel band.
4. the method for cold rolling as claimed in claim 2 >=2.5%Si high silicon steel, it is characterised in that：It is described to use once cold rolling
Method carries out cold rolling and includes：
Using three passage more than cold-rolling process, the reduction ratio of the first passage is controlled 30%~45%, the pressure of control extreme trace time
18%~31%, the reduction ratio of remaining each passage is controlled 25%~42% rate.
5. the method for cold rolling >=2.5%Si high silicon steel as described in claim 3 or 4, it is characterised in that：The once cold rolling method
Or the secondary cold-rolling method, using fully continuous rolling, the particular content for using fully continuous rolling is current steel blank steel coils
After carrying out last passes, continue to roll next steel blank steel coils using the working roll, each pair of working roll be carried out continuously " cogging+
Each passes of finished product ".
6. the method for cold rolling >=2.5%Si high silicon steel as described in claim 1 or 3 or 4, it is characterised in that：The blank steel
After winding off volume, normalizing pickling is carried out to the blank steel band of output, upper machine rolling is directly carried out to blank steel band using six-high cluster mill.
7. the method for cold rolling >=2.5%Si high silicon steel as described in claim 1 or 3 or 4, it is characterised in that：The rolling is also
Including：
Automatic strip shape control is carried out, inlet segment cooling automatically controls work roll thermal crown；Intermediate calender rolls bending roller force 200~
500kN, 0~120mm of axial roll shifting amount；Using the target flatness curve of biquadratic function.
8. the method for cold rolling >=2.5%Si high silicon steel as described in claim 1 or 3 or 4, it is characterised in that：It is described to finished product
When steel band is batched, each passage enters side 50~240MPa of unit tension, goes out side 160~240MPa of unit tension；Roll-force 10
~18MN, 600~950mpm of stable rolling speed.
9. the method for cold rolling >=2.5%Si high silicon steel as described in claim 1 or 3 or 4, it is characterised in that：The working roll
Using forged steel, semi-high speed steel or high speed steel material.
10. the method for cold rolling >=2.5%Si high silicon steel as described in claim 1 or 3 or 4, it is characterised in that：The working roll
Surface roughness be 0.4~1.0 μm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530437A (en) * | 2018-12-11 | 2019-03-29 | 佛山市诚德新材料有限公司 | A kind of cold rolling process and stainless steel band of stainless steel band |
| CN110202001A (en) * | 2019-06-12 | 2019-09-06 | 山西太钢不锈钢精密带钢有限公司 | Preparation Method and milling method are matched by the roller system of ultra-thin ultra-wide stainless steel product rolling |
| CN110369497A (en) * | 2019-07-09 | 2019-10-25 | 鞍钢股份有限公司 | Cold rolling control method for high-silicon thin-strip non-oriented silicon steel |
| CN112122345A (en) * | 2020-08-31 | 2020-12-25 | 首钢智新迁安电磁材料有限公司 | Rolling method of different steel type mixed casting blank |
| CN113399456A (en) * | 2021-06-30 | 2021-09-17 | 新余钢铁股份有限公司 | Ultrathin 65Mn cold-rolled wide steel strip and manufacturing method thereof |
| CN113926853A (en) * | 2021-09-15 | 2022-01-14 | 首钢智新迁安电磁材料有限公司 | Rolling method and device for high-grade non-oriented silicon steel |
| CN114130821A (en) * | 2021-11-25 | 2022-03-04 | 包头钢铁（集团）有限责任公司 | One-time cold rolling method for high magnetic induction oriented silicon steel laboratory rolling mill |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0280105A (en) * | 1988-09-14 | 1990-03-20 | Kawasaki Steel Corp | Method for cold rolling silicon steel sheet |
| CN102418034A (en) * | 2011-12-14 | 2012-04-18 | 武汉钢铁(集团)公司 | Production method for high-grade non-oriented silicon steel |
| CN103212579A (en) * | 2013-04-19 | 2013-07-24 | 中冶南方工程技术有限公司 | Six-roller mill |
| CN105369125A (en) * | 2015-12-07 | 2016-03-02 | 武汉钢铁(集团)公司 | Non-oriented high silicon steel sheet and preparation method |
| CN104399749B (en) * | 2014-10-28 | 2016-06-22 | 武汉钢铁(集团)公司 | A kind of can prevent Si >=3.5% silicon steel limit from splitting and the cold rolling process of brittle failure |
| CN106583448A (en) * | 2016-12-08 | 2017-04-26 | 武汉钢铁股份有限公司 | Cold rolling method for high-magnetic-induction grain-oriented silicon steel in extremely thin specification |
-
2017
- 2017-12-29 CN CN201711479983.1A patent/CN108213077A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0280105A (en) * | 1988-09-14 | 1990-03-20 | Kawasaki Steel Corp | Method for cold rolling silicon steel sheet |
| CN102418034A (en) * | 2011-12-14 | 2012-04-18 | 武汉钢铁(集团)公司 | Production method for high-grade non-oriented silicon steel |
| CN103212579A (en) * | 2013-04-19 | 2013-07-24 | 中冶南方工程技术有限公司 | Six-roller mill |
| CN104399749B (en) * | 2014-10-28 | 2016-06-22 | 武汉钢铁(集团)公司 | A kind of can prevent Si >=3.5% silicon steel limit from splitting and the cold rolling process of brittle failure |
| CN105369125A (en) * | 2015-12-07 | 2016-03-02 | 武汉钢铁(集团)公司 | Non-oriented high silicon steel sheet and preparation method |
| CN106583448A (en) * | 2016-12-08 | 2017-04-26 | 武汉钢铁股份有限公司 | Cold rolling method for high-magnetic-induction grain-oriented silicon steel in extremely thin specification |
Non-Patent Citations (1)
| Title |
|---|
| 吴有生 等: "中冶南方开发的小辊径六辊冷轧机", 《世界金属导报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530437A (en) * | 2018-12-11 | 2019-03-29 | 佛山市诚德新材料有限公司 | A kind of cold rolling process and stainless steel band of stainless steel band |
| CN110202001A (en) * | 2019-06-12 | 2019-09-06 | 山西太钢不锈钢精密带钢有限公司 | Preparation Method and milling method are matched by the roller system of ultra-thin ultra-wide stainless steel product rolling |
| CN110369497A (en) * | 2019-07-09 | 2019-10-25 | 鞍钢股份有限公司 | Cold rolling control method for high-silicon thin-strip non-oriented silicon steel |
| CN112122345A (en) * | 2020-08-31 | 2020-12-25 | 首钢智新迁安电磁材料有限公司 | Rolling method of different steel type mixed casting blank |
| CN112122345B (en) * | 2020-08-31 | 2022-05-13 | 首钢智新迁安电磁材料有限公司 | Rolling method of special steel type mixed casting blank |
| CN113399456A (en) * | 2021-06-30 | 2021-09-17 | 新余钢铁股份有限公司 | Ultrathin 65Mn cold-rolled wide steel strip and manufacturing method thereof |
| CN113926853A (en) * | 2021-09-15 | 2022-01-14 | 首钢智新迁安电磁材料有限公司 | Rolling method and device for high-grade non-oriented silicon steel |
| CN114130821A (en) * | 2021-11-25 | 2022-03-04 | 包头钢铁（集团）有限责任公司 | One-time cold rolling method for high magnetic induction oriented silicon steel laboratory rolling mill |
| CN114130821B (en) * | 2021-11-25 | 2024-04-30 | 包头钢铁（集团）有限责任公司 | One-time cold rolling method of high-magnetic-induction oriented silicon steel laboratory rolling mill |
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