CN110229951A - A kind of cold-rolling stainless steel online annealing equipment and technique - Google Patents
A kind of cold-rolling stainless steel online annealing equipment and technique Download PDFInfo
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- CN110229951A CN110229951A CN201910689890.4A CN201910689890A CN110229951A CN 110229951 A CN110229951 A CN 110229951A CN 201910689890 A CN201910689890 A CN 201910689890A CN 110229951 A CN110229951 A CN 110229951A
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
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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
- C21D11/00—Process control or regulation for heat treatments
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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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0268—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment between cold rolling steps
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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
- C21D9/56—Continuous furnaces for strip or wire
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Abstract
A kind of cold-rolling stainless steel online annealing equipment and technique, the equipment include rolling mill body and the winder set on rolling mill body two sides；Annealing device is equipped in supporting table between the steel band exit of rolling mill body and the steel band inlet of winder, so that the steel band after rolling is wound by winder again after entering annealing device annealing.The invention also includes a kind of cold-rolling stainless steel online annealing techniques.One aspect of the present invention greatly reduces occupation area of equipment, reduces cost, improves working efficiency；On the other hand, so that steel strip surface deformation is small, heating speed is fast, is rapidly heated simultaneously, and quick forming core is also easy to get to tiny grain structure.
Description
Technical field
The present invention relates to strip anneal technical field, especially a kind of cold-rolling stainless steel online annealing equipment and technique.
Background technique
The thing of Steel-rolling Industry most headache is exactly annealing furnace at present, when rolling to a certain extent when, steel band will processing hardening,
Meanwhile the mechanical performance of steel band there are certain requirements, so must be made annealing treatment.Country's steel band 95% uses at present
Continuous gas protects annealing furnace (100~10,000,000 yuan/set).But presently, there are following Railway Projects for this furnace:
1. furnace superintendent (13~36 meters) stove is radiated flue by resistance heat or coal gas heat, reheating is transmitted to gas in flue and protects sky
Between, re-radiation to stainless steel belt.Resistance heat or coal gas heat so have just passed through more radiation repeatedly conduction, have made the thermal efficiency significantly
It reduces；
2. soaking time is long since heating rate is slow, so crystal grain is also coarse；
3. temperature reaches 1150 DEG C of ﹥ in flue, and the outer temperature of flue is up to > 1200 DEG C, so furnace when temperature of steel strips is to 1100 DEG C
Gallbladder, can also direct high-temperature oxydation outside flue under long term high temperature；
4. the service life is short, a flue was generally replaced at 8~24 months, (furnace bladder material 310S, price 35000~60000
Member/t), dismounting flue project amount is big, and the time is long (15~30 days), so directly affecting plant produced；
5. milling train and two independent equipment of annealing furnace can greatly improve occupied area, structure is not compact, and is transmitted across in steel band
Cheng Zhongyi is oxidized；
As long as 6. stove one starting cannot blowing out, as long as 10~36 meters of long flues are possible to because of heat expansion because of a blowing out
Shrinkage and broken from centre.So this annealing furnace equipment investment is big, the thermal efficiency is low, speed is slow, at high cost, organizational coarseness, changes
Flue trouble, cannot with open with stop etc. be Steel-rolling Industry a great problem.
Summary of the invention
The purpose of the present invention is overcome the above-mentioned insufficient of the prior art and small, high-efficient, the heating that provides a kind of occupied area
Fastly, at low cost, non-oxidation, quality high cold-rolling stainless steel online annealing equipment and technique.
The technical scheme is that
A kind of cold-rolling stainless steel online annealing equipment of the present invention, the winding including rolling mill body and set on rolling mill body two sides
Machine；Annealing device is equipped in supporting table between the steel band exit of rolling mill body and the steel band inlet of winder, so that
Steel band after rolling is wound by winder again after entering annealing device annealing.
Further, the annealing device includes medium temperature transverse direction magnetic inductor, the high temperature set gradually along steel band traffic direction
Lateral magnetic inductor and cooler；The connection of the seal cavity of the medium temperature transverse direction magnetic inductor and/or high temperature transverse direction magnetic inductor
Protective gas input channel.
Further, between the medium temperature transverse direction magnetic inductor and high temperature transverse direction magnetic inductor and high temperature transverse direction magnetic induction
The exit of device is equipped with temperature measurer, and the temperature measurer connects controller.
Further, the medium temperature transverse direction magnetic inductor and/or high temperature transverse direction magnetic inductor include upper pedestal and lower base, on
Magnetic induction coil, magnetic pole and the shielding case set on frame edge, magnetic pole and steel band traffic direction are equipped on pedestal and lower base
In parallel, magnetic induction coil is vertical with steel band traffic direction；The magnetic pole includes fixed magnetic pole and mobile magnetic pole, and mobile magnetic pole is set to
Between adjacent fixed magnetic pole and between fixed magnetic pole and shielding case；Mobile magnetic pole passes through its movement of Serve Motor Control；Servo
The output end of motor connection controller.
Further, the lower base be equipped with refractory ceramics plate, steel band from the refractory ceramics plate of upper pedestal and lower base it
Between pass through, and upper pedestal center line, lower base center line are overlapped with steel band Operation Centre line.
Further, the quantity of the magnetic induction coil is 2 ~ 6.Preferably, on medium temperature transverse direction magnetic inductor inner base frame
The quantity of magnetic induction coil is 1 ~ 2, and the quantity of the magnetic induction coil on high temperature transverse direction magnetic inductor inner base frame is 3 ~ 6.
Further, between the medium temperature transverse direction magnetic inductor and high temperature transverse direction magnetic inductor and high temperature transverse direction magnetic induction
Channel between device and cooler passes through temperature resistant transparent glass capsulation.
Further, the cavity of the cooler is connected to liquid nitrogen input channel.
A kind of cold-rolling stainless steel online annealing technique of the present invention, comprising the following steps:
S1: exporting after steel band is by mill milling, is directly entered the medium temperature transverse direction magnetic inductor of annealing device, medium temperature transverse direction magnetic strength
The upper lower base of device is answered to compress and seal；
S2: protective gas is filled with into medium temperature transverse direction magnetic inductor；Steel band is in medium temperature transverse direction magnetic inductor expert into passing through cutting
Magnetic induction coil carries out automatic heating, is rapidly heated to the recovery temperature of setting, carries out reply processing to steel band；
S3: under protective gas atmosphere, steel band continuation marches to forward high temperature transverse direction magnetic inductor, high temperature transverse direction magnetic inductor
Upper lower base is compressed and is sealed；Steel band is in high temperature transverse direction magnetic inductor expert into being risen automatically by cutting magnetic induction line circle
Temperature, is rapidly heated to the recrystallization temperature of setting, carries out recrystallization processing to steel band；
S4: after recrystallization processing, the steel band that high temperature is come out of the stove enters cooler, is rapidly cooled；
S5: annealing this section of steel band after cooling is wound by winder, and the steel band of back segment continues the process of rolling, annealing, directly
Annealing device is all removed to steel band, annealing device is automatically closed；
S6: carrying out finish rolling, then wound by the winder of the other side at the steel band inverted running to milling train wound by winder, until
Product reaches requirement, removes steel band and completes steel rolling annealing whole process.
Further, the recovery temperature set is 250~750 DEG C；The recrystallization temperature is 800 ~ 1100 DEG C.
Further, travel speed of the steel band in medium temperature transverse direction magnetic inductor and/or high temperature transverse direction magnetic inductor is
0.5~1m/min；The travel speed that the steel band enters cooler is 10~150m/min.
Further, in S3, further include the steps that carrying out even regulation to recrystallization temperature, according to the movement speed tune of steel band
Save the power of the magnetic induction coil of high temperature transverse direction magnetic inductor；Movement is adjusted according to the temperature level in high temperature transverse direction magnetic inductor
The temperature equalization at each position of steel band is realized in the position of magnetic pole.
Beneficial effects of the present invention:
(1) by the way that annealing device to be set on rolling mill body, the two is combined into one, an equipment is become, realizes that Edge of Steel Strip rolls
The process of side annealing processed, greatly reduces occupation area of equipment, reduces cost, improve working efficiency；And do not changing milling train entirety
On the basis of occupied area, it is also fully utilized by that vacant position in rolling mill body exit, realizes the online of steel band
Annealing function；
(2) according to the three phases of annealing process: replying --- recrystallization ---, crystal grain is grown up, and devises medium temperature transverse direction magnetic induction
Device and high temperature transverse direction magnetic inductor, structure is simple, can be according to the movement voluntarily upper electric heating of steel band, easy to operate, working efficiency
Height, and by being passed through protective gas, aoxidize steel band will not during the rolling process；
(3) power of the magnetic induction coil of high temperature transverse direction magnetic inductor is adjusted according to the movement speed of steel band；According to high temperature transverse direction
Temperature level in magnetic inductor adjusts the position of mobile magnetic pole, so that steel strip surface deformation is small, heating speed is fast, while quickly
Heating, quick forming core are also easy to get to tiny grain structure；
(4) by medium temperature transverse direction magnetic inductor, high temperature transverse direction magnetic inductor and the cooler of setting integrally connected, so that annealing dress
It is little to set whole area occupied, and from gas guarantor prevent from aoxidizing, to medium temperature reply eliminate stress to rapid crystallization, quick forming core, fastly
Quickly cooling is but and automatic adjustment temperature is to the control processes such as surface temperature difference, thoroughly solve existing continuous annealing furnace exist investment greatly,
The problems such as thermal efficiency is low, speed is slow, at high cost, organizational coarseness, changes flue trouble, cannot be with opening with stopping；
(5) this section of steel band after cooling of annealing is wound by winder, and the steel band of back segment continues the process of rolling, annealing, directly
To steel band, all annealing is completed, and closes annealing device, and finish rolling is carried out at the steel band inverted running to milling train wound by winder,
It is wound again by the winder of the other side, to realize that Edge of Steel Strip rolling becomes the process of annealing, so that working efficiency greatly improves.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the overlooking structure diagram of embodiment illustrated in fig. 1 annealing device；
Fig. 3 is the structure enlargement diagram of embodiment illustrated in fig. 1 annealing device；
Fig. 4 is the enlarged structure schematic diagram of embodiment illustrated in fig. 2 high temperature transverse direction magnetic inductor；
Fig. 5 is the mounting structure schematic diagram of the mobile magnetic pole of embodiment illustrated in fig. 1.
Description of drawing identification:
1. rolling mill body；2. winder；3. supporting table；4. annealing device；5. temperature resistant transparent glass；6. infrared thermometer；7.
Scanning thermo-detector；
41. medium temperature transverse direction magnetic inductor；42. high temperature transverse direction magnetic inductor；43. cooler；44. protective gas input channel；45.
Liquid nitrogen input channel；
421. upper pedestal；422. lower base；423. magnetic induction coil；424. shielding case；425. fixed magnetic pole；426. mobile magnetic
Pole；427. protective cover；
4261. screw rod；4262. servo motor.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
A kind of cold-rolling stainless steel online annealing equipment as shown in Figure 1:, including rolling mill body 1 and be set to 1 two sides of rolling mill body
Winder 2；Annealing is equipped in supporting table 3 between the steel band exit of rolling mill body 1 and the steel band inlet of winder
Device 4 is wound by winder 2 again so that the steel band after rolling enters after annealing device 4 is annealed.
Above scheme has the advantage that 1 body of milling train sheet is used to roll steel band, when rolling to a certain extent,
Steel band will processing hardening, meanwhile, the mechanical performance of steel band there are certain requirements, so must be made annealing treatment, after annealing
Again to carrying out finish rolling on milling train.It is at high cost if not only taken up a large area using two independent equipment of milling train and annealing furnace,
It cannot be with opening with stopping.The present invention by by annealing device be set to rolling mill body on, the two is combined into one, an equipment is become,
The process for realizing the annealing of Edge of Steel Strip rolled edge, greatly reduces occupation area of equipment, reduces cost, improves working efficiency.
Wherein, supporting table 3 is set to the exit of rolling mill body 1, a part as rolling mill body.Existing milling train outlet
It is to design the bracket having for supporting steel band in the supporting table at place, the present invention improves the structure of supporting table, changes into
Annealing device is also fully utilized by that of rolling mill body exit on the basis for not changing milling train entirety occupied area
Vacant position realizes the online annealing function of steel band.
Specifically, the annealing device 4 includes the medium temperature transverse direction magnetic inductor 41 set gradually along steel band traffic direction, height
Warm transverse direction magnetic inductor 42 and cooler 43；The seal chamber of the medium temperature transverse direction magnetic inductor and/or high temperature transverse direction magnetic inductor
Body connective protection gas feeding duct 44.By the way that protective gas input channel 44 is arranged, it is ensured that steel band is in annealing process
It is not oxidized.
Protective gas input channel 44 can be set on medium temperature transverse direction magnetic inductor, can also be set to high temperature transverse direction magnetic inductor
On, it can also be respectively set in the cavity of the two, but will increase cost in this way, and improve the complexity of structure.The present embodiment is preferred
Protective gas input channel 44 is connected to the seal cavity of medium temperature transverse direction magnetic inductor 41, and medium temperature transverse direction magnetic inductor 41 with
It is equipped with gap between high temperature transverse direction magnetic inductor 42, is preferably sealed by temperature resistant transparent glass 5, so as to protective gas entrance
High temperature transverse direction magnetic inductor also can be selected other materials and be sealed certainly.In addition, high temperature transverse direction magnetic inductor 52 and cooling
Gap between device 43 is sealed also by temperature resistant transparent glass 5.The cooler 43 of the present embodiment is preferably cooling using liquid nitrogen spraying
The cavity of device, cooler connects liquid nitrogen input channel 45.Select the cooler construction simple, small volume.The steel of the present embodiment
Band material is mainly stainless steel material, which is most widely used.
In the present embodiment, between medium temperature transverse direction magnetic inductor and high temperature transverse direction magnetic inductor and high temperature transverse direction magnetic induction
The exit of device is equipped with temperature measurer, the input terminal of the temperature measurer connection controller.Preferably, medium temperature transverse direction magnetic inductor with
Temperature measurer between high temperature transverse direction magnetic inductor selects infrared thermometer 6, mainly for detection of medium temperature transverse direction magnetic inductor 41
Interior temperature；The temperature measurer in the exit of high temperature transverse direction magnetic inductor selects scanning thermo-detector 7, is mainly used for high temperature transverse magnetic
Formula thermometric is scanned in inductor 42, because the area of high temperature transverse direction magnetic inductor is larger, if using other temperature transducers
Device can not detect any position of stainless steel band transverse direction, be easy thermometric inaccuracy.
As shown in Fig. 2 ~ Fig. 5: in the present embodiment, medium temperature transverse direction magnetic inductor 41 and high temperature transverse direction magnetic inductor 42 include upper
Pedestal 421 and lower base 422, are fixedly connected between upper pedestal 421 and lower base 422, and the side of upper pedestal and lower base is sealed
It closes, forms closing inner chamber, on the other hand on the one hand improving heat insulating ability prevents outside air from entering, aoxidize steel band.Upper pedestal
With magnetic induction coil 423, magnetic pole are equipped on lower base and set on the shielding case 424 of frame edge, shielding case is used for every magnetic.It is excellent
Selection of land, can be arranged refractory ceramics plate on lower base, and steel band passes through between upper pedestal and the refractory ceramics plate of lower base；Setting
The purpose of refractory ceramics plate is: on the one hand playing insulation effect；On the other hand, there is logical magnetic action, will not influence steel band and cut
The magnetic line of force is cut, and steel band steel band compared with refractory ceramics plate contacts can more be protected directly and for the coil contact on lower base
The characteristic of steel band.
The difference of the present embodiment medium temperature transverse direction magnetic inductor and high temperature transverse direction magnetic inductor is:
(1) length is different: the length of medium temperature transverse direction magnetic inductor is less than the length of high temperature transverse direction magnetic inductor because temperature compared with
Low, the quantity of magnetic induction coil will less, such as the length of medium temperature transverse direction magnetic inductor is 500mm, high temperature transverse direction magnetic strength
The length for answering device is 1000mm；The quantity of the magnetic induction coil of medium temperature transverse direction magnetic inductor is two, high temperature transverse direction magnetic inductor
Magnetic induction coil quantity be four.
(2) power is different；The power of medium temperature transverse direction magnetic inductor is less than the power of high temperature transverse direction magnetic inductor；Such as: with
For steel band width x thickness=800mm × 0.9mm, the power of medium temperature transverse direction magnetic inductor selects 200KW, high temperature transverse direction magnetic inductor
Power select 800KW.
(3) field structure is different.Small in size due to medium temperature transverse direction magnetic inductor, the recovery stage temperature of steel band is lower,
It can be without carrying out temperature equalization adjusting, therefore, fixed magnetic pole 425 can be only arranged in magnetic pole, without mobile magnetic pole, not only simplify knot
Structure, by reducing costs.Or can be using the structure of fixed magnetic pole 425 and mobile magnetic pole 426, but will not control at this stage
Mobile magnetic pole is mobile.For high temperature transverse direction magnetic inductor preferably with a set of automatic samming regulating device, i.e. magnetic pole includes fixed magnetic pole 425
With mobile magnetic pole 426, the settable one or more of fixed magnetic pole, mobile magnetic pole is at least arranged two.The present embodiment is preferably fixed
The quantity of magnetic pole 425 is 3, and is spaced setting, and the quantity of mobile magnetic pole 426 is four, is respectively arranged at adjacent fixed magnetic pole
Between 425 and between fixed magnetic pole 425 and shielding case 424.Mobile magnetic pole 426 passes through screw rod 4261 and 4262 axis of servo motor
Connection, and four mobile motors respectively correspond four servo motors 4262, four servo motors are all connected with the output end of controller,
By the temperature of the steel strip surface in scanning thermo-detector Scanning Detction high temperature transverse direction magnetic inductor exit, and information is fed back
To the controller of automatic control system, position adjusting is carried out to mobile magnetic pole, the temperature to guarantee steel strip surface each position is equal
Even, the temperature difference of each position is controlled at ± 10 DEG C or so.
In the present embodiment, upper pedestal center line, lower base center line are overlapped with steel band Operation Centre line, more in order to steel band
Good cutting magnetic line.Magnetic pole is parallel with steel band traffic direction, so that transverse direction (i.e. width) direction of mobile pole pair steel band is each
Position carries out temperature adjusting, the also mainly temperature of strip width direction, therefore cross between each magnetic pole of scanning thermo-detector scanning
To arrangement.Magnetic induction coil is vertical with steel band traffic direction, i.e., also vertical with the arranged direction of magnetic pole.
It is understood that the magnetic pole distributed architecture of above-mentioned medium temperature transverse direction magnetic inductor and high temperature transverse direction magnetic inductor,
The quantity and the coiling number of plies of quantity and magnetic induction coil can be adjusted flexibly according to demand, be such as rapidly heated to realize,
The quantity or the coiling number of plies of magnetic induction coil can be increased.
Preferably, it is also covered with protective cover 427 on the upper pedestal 421 of high temperature transverse direction magnetic inductor, to improve thermal insulation property.
A kind of cold-rolling stainless steel online annealing technique, comprising the following steps:
S101: exporting after steel band is by mill milling, is directly entered the medium temperature transverse direction magnetic inductor of annealing device, medium temperature transverse magnetic
The upper lower base of inductor is compressed and is sealed.
Specifically, according to the three phases of annealing process: replying --- recrystallization ---, crystal grain is grown up, and the present invention devises
Two groups of inductors, i.e. medium temperature transverse direction magnetic inductor and high temperature transverse direction magnetic inductor, and be closed after lower base compresses thereon
Space.The rolled structure of three rollers, four-roller, five rollers even more multiple roll can be selected in rolling mill body, such as present invention milling train choosing shown in FIG. 1
It is four-roller 850 milling train series.The steel band of the present embodiment is preferably stainless steel band, width x thickness=800mm × 0.9mm.
S102: protective gas is filled with into medium temperature transverse direction magnetic inductor；Steel band medium temperature transverse direction magnetic inductor expert into, lead to
Cutting magnetic induction line circle is crossed, automatic heating is carried out, is rapidly heated to the recovery temperature of setting, reply processing is carried out to steel band.
Specifically, this is the recovery stage of annealing process, and the recovery temperature set, can be according to steel hand tape as 250~750 DEG C
Very little and material is configured.Temperature control is replied at 250~750 DEG C with reaching under gas shield, can be eliminated steel band and rolled
Generated stress, prevents strip deformation in system.Steel band is gone slowly with the speed of 1m/min, by cutting magnetic force in the process of running
Line, the movement speed that starting begins to warm up, and set according to steel band so that magnetic induction coil is powered, to control magnetic induction coil
Power, such as when movement speed is slower, cpable of lowering power when movement speed is very fast, can reduce power, be rapidly heated with realizing.
S103: under protective gas atmosphere, steel band continuation marches to forward high temperature transverse direction magnetic inductor, high temperature transverse direction magnetic strength
The upper lower base of device is answered to compress and seal；Steel band high temperature transverse direction magnetic inductor expert into, pass through cutting magnetic induction line circle, carry out
Automatic heating, is rapidly heated to the recrystallization temperature of setting, carries out recrystallization processing to steel band.
Specifically, this for annealing process recrystallization --- crystal grain is grown up the stage.Steel band is warming up to recrystallization temperature, then
Crystallization temperature is 800 ~ 1100 DEG C, and preferably 1100 DEG C, and kept the temperature in back segment to reach and be rapidly heated, quick forming core obtains
To tiny and uniform crystal grain.Temperature is the controller that information feedback is provided by scanning thermo-detector to automatic control system, control
Device processed controls corresponding servo motor according to feedback information and acts, and carries out guaranteeing the equal of plate face temperature to the adjusting of mobile magnetic pole
Even, the temperature difference is controlled at ± 10 DEG C.For example, controlling the position if detecting that a certain position temperature of steel band is low compared with other positions
Mobile magnetic pole near setting is acted at the position or position, carries out temperature adjusting to the position, can also basis
The movement speed of steel band adjusts the power of the magnetic induction coil of high temperature transverse direction magnetic inductor, to improve the uniform of steel band transverse temperature
Property.
S104: after recrystallization processing, the steel band that high temperature is come out of the stove enters cooler, is rapidly cooled.
Specifically, steel band high temperature, which is come out of the stove, enters cooler, be it is cold by liquid nitrogen mist, reach steel strip surface uniformly fast quickly cooling
But, it avoids the intercrystalline precipitation C compound when 700~1100 DEG C cooling and influences tissue and mechanical performance.Wherein, steel band enters cold
But the travel speed control of device is in 10~150m/min, tissue and mechanical performance required for obtaining band steel band.
S105: annealing this section of steel band after cooling is wound by winder, and the steel band of back segment continues the mistake of rolling, annealing
Journey, until steel band all removes annealing device, annealing device is automatically closed.
Specifically, it is no longer cut when whole steel bands remove annealing device when that is, steel band removes medium temperature transverse direction magnetic inductor
When magnetic induction line, the magnetic induction coil of medium temperature transverse direction magnetic inductor is automatically powered off；It is high when steel band removes high temperature transverse direction magnetic inductor
The magnetic induction coil of warm transverse direction magnetic inductor also automatically powers off, so that annealing device is closed, entire volume strip anneal is completed.
S106: finish rolling is carried out at the steel band inverted running to milling train wound by winder, then is received by the winder of the other side
Volume removes steel band and completes steel rolling annealing whole process until product reaches requirement.
In conclusion the present invention passes through two groups of transverse direction magnetic inductors of setting, so that steel strip surface deforms small, heating speed
Fastly, it is rapidly heated simultaneously, quick forming core is also easy to get to tiny grain structure.And this annealing device area occupied is little, always
Be about 2.2 meters, from gas guarantor prevent from aoxidizing, to medium temperature reply eliminate stress to rapid crystallization, quick forming core, rapid cooling and automatically
It adjusts temperature and thoroughly solves the problems, such as that existing continuous annealing furnace exists to processes such as control surface temperature differences.
Claims (10)
1. a kind of cold-rolling stainless steel online annealing equipment, the winder including rolling mill body and set on rolling mill body two sides；It is special
Sign is, annealing device is equipped in the supporting table between the steel band exit of rolling mill body and the steel band inlet of winder,
So that the steel band after rolling is wound by winder again after entering annealing device annealing.
2. cold-rolling stainless steel online annealing equipment according to claim 1, which is characterized in that the annealing device includes edge
Medium temperature transverse direction magnetic inductor, high temperature transverse direction magnetic inductor and the cooler that steel band traffic direction is set gradually；The medium temperature is lateral
The seal cavity connective protection gas feeding duct of magnetic inductor and/or high temperature transverse direction magnetic inductor.
3. cold-rolling stainless steel online annealing equipment according to claim 2, which is characterized in that the medium temperature transverse direction magnetic induction
Between the device and high temperature transverse direction magnetic inductor and exit of high temperature transverse direction magnetic inductor is equipped with temperature measurer, the temperature measurer
Connect controller.
4. cold-rolling stainless steel online annealing equipment according to claim 2 or 3, which is characterized in that the medium temperature transverse magnetic
Inductor and/or high temperature transverse direction magnetic inductor include upper pedestal and lower base, are equipped with the line of magnetic induction on upper pedestal and lower base
Circle, magnetic pole and the shielding case set on frame edge, magnetic pole is parallel with steel band traffic direction, magnetic induction coil and steel band traffic direction
Vertically；The magnetic pole includes fixed magnetic pole and mobile magnetic pole, and mobile magnetic pole is set between adjacent fixed magnetic pole and fixed magnetic pole
Between shielding case；Mobile magnetic pole passes through its movement of Serve Motor Control；The output end of servo motor connection controller.
5. cold-rolling stainless steel online annealing equipment according to claim 4, which is characterized in that the lower base is equipped with height
Warm ceramic wafer, steel band passes through between upper pedestal and the refractory ceramics plate of lower base, and upper pedestal center line, lower base center line
It is overlapped with steel band Operation Centre line.
6. cold-rolling stainless steel online annealing equipment according to claim 4, which is characterized in that the number of the magnetic induction coil
Amount is 2 ~ 6；Or the quantity of the magnetic induction coil on the medium temperature transverse direction magnetic inductor inner base frame is 1 ~ 2, high temperature is lateral
The quantity of magnetic induction coil on magnetic inductor inner base frame is 3 ~ 6.
7. cold-rolling stainless steel online annealing equipment according to claim 2 or 3, which is characterized in that the medium temperature transverse magnetic
Channel between inductor and high temperature transverse direction magnetic inductor and between high temperature transverse direction magnetic inductor and cooler is saturating by high temperature
Bright glass capsulation；Or the cavity of the cooler is connected to liquid nitrogen input channel.
8. a kind of cold-rolling stainless steel online annealing technique, which comprises the following steps:
S1: exporting after steel band is by mill milling, is directly entered the medium temperature transverse direction magnetic inductor of annealing device, medium temperature transverse direction magnetic strength
The upper lower base of device is answered to compress and seal；
S2: protective gas is filled with into medium temperature transverse direction magnetic inductor；Steel band is in medium temperature transverse direction magnetic inductor expert into passing through cutting
Magnetic induction coil carries out automatic heating, is rapidly heated to the recovery temperature of setting, carries out reply processing to steel band；
S3: under protective gas atmosphere, steel band continuation marches to forward high temperature transverse direction magnetic inductor, high temperature transverse direction magnetic inductor
Upper lower base is compressed and is sealed；Steel band is in high temperature transverse direction magnetic inductor expert into being risen automatically by cutting magnetic induction line circle
Temperature, is rapidly heated to the recrystallization temperature of setting, carries out recrystallization processing to steel band；
S4: after recrystallization processing, the steel band that high temperature is come out of the stove enters cooler, is rapidly cooled；
S5: annealing this section of steel band after cooling is wound by winder, and the steel band of back segment continues the process of rolling, annealing, directly
Annealing device is all removed to steel band, annealing device is automatically closed；
S6: carrying out finish rolling, then wound by the winder of the other side at the steel band inverted running to milling train wound by winder, until
Product reaches requirement, removes steel band and completes steel rolling annealing whole process.
9. cold-rolling stainless steel online annealing technique according to claim 8, which is characterized in that the recovery temperature of the setting
It is 250~750 DEG C；The recrystallization temperature is 800 ~ 1100 DEG C；Or the steel band is in medium temperature transverse direction magnetic inductor and/or height
Travel speed in warm transverse direction magnetic inductor is 0.5 ~ 1m/min；The steel band enter cooler travel speed be 10~
150m/min。
10. cold-rolling stainless steel online annealing technique according to claim 8 or claim 9, which is characterized in that further include pair in S3
Recrystallization temperature carries out the step of even regulation, and the line of magnetic induction of high temperature transverse direction magnetic inductor is adjusted according to the movement speed of steel band
The power of circle；The position that mobile magnetic pole is adjusted according to the temperature level in high temperature transverse direction magnetic inductor, realizes each position of steel band
The temperature equalization at place.
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