CN106623421A - Continuous production method and line for variable-thickness profile - Google Patents
Continuous production method and line for variable-thickness profile Download PDFInfo
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- CN106623421A CN106623421A CN201611222711.9A CN201611222711A CN106623421A CN 106623421 A CN106623421 A CN 106623421A CN 201611222711 A CN201611222711 A CN 201611222711A CN 106623421 A CN106623421 A CN 106623421A
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0035—Forging or pressing devices as units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0092—Welding in the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B2038/004—Measuring scale thickness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a continuous production method and line for a variable-thickness profile. Hot-rolled and pickled or cold-rolled equal-thickness strip steel is used as a raw material, all processes from rolling to surface coating to forming and cutting and the like of the strip steel are completed on line, production processes such as uncoiling, welding, variable-thickness rolling, degreasing, on-line heat treatment, online coating, flattening, roll-in forming, cutting and stacking are integrated, and the continuous production method is used for the fully-continuous automatic production of the variable-thickness profile. By using the continuous production method disclosed by the invention, the continuous production and coating of the variable-thickness profile can be realized, the defects of high production cost, high labor intensity, continuous production incapability and surface coating incapability of the existing variable-thickness profile are overcome, the production efficiency of the variable-thickness profile is greatly increased, and the favorable economic benefit is obtained. By using the continuous production method, a single or partially continuous production process in the prior art can be replaced, the production process of the variable-thickness profile can be simplified, and the continuous production of the variable-thickness profile can be realized.
Description
Technical field
The present invention relates to shape extrusion technology, the continuous producing method of more particularly to a kind of Varying-thickness section bar and continuous production
Line.
Background technology
For the target of automobile lightweight, current automobile industry is being promoted the use of a kind of by rolling vertical
To thickness continually varying band --- thickening plate；Thickening plate forms the section bar of Varying-thickness, thickening degree type after processing and forming
Some parts on the alternative automobile of material, mitigate the weight of automobile, finally realize the energy-saving and emission-reduction of automobile.
At present, both at home and abroad existing technology carries out the production of thickening plate and thickening degree type using single production process mostly
The processing of material.In prior art, the technique productions such as equal thickness coil of strip Jing uncoilings, singlestandmill rolling, curling go out Varying-thickness steel
Volume；The production processes such as Varying-thickness coil of strip Jing uncoilings, degreasing, curling, entire volume bell-type annealing carry out the degreasing and annealing of thickening coil of strip；
The operations such as Varying-thickness coil of strip Jing uncoilings, leveling, shearing, stacking after annealing produce thickening plate；Thickening plate Jing cold roll formings add
The operation such as work and welding produces Varying-thickness section bar.
Without Varying-thickness Surface of profile coating correlation technique in prior art, temporarily can't realize thickening plate it is online it is zinc-plated,
The related online coating technology such as aluminum-zinc alloy, and the production technology low production efficiency of Varying-thickness section bar, production cost is high, work
Intensity is big, and can not continuously produce.Even if some technologies can realize that the long-time of Varying-thickness section bar multiple operation is continuously produced, but
Full-range continuous production can not still be realized.
As China Patent Publication No. 102513806A discloses a kind of " longitudinal variable-thickness cold-bent section bars in continuous rolling manner shaping side
Method and its device ", the patent is entered Jing after leveling, pickling after uncoiling with equal thickness coiled material as raw material into Varying-thickness rolling system
Row Varying-thickness is rolled, then is become and be longitudinally continuous Varying-thickness sheet material Jing degreasing, after in line tempering, and roller is entered after skin pass rolling, slitting
Building mortion simultaneously shapes final section bar, into discharge pedestal.The patent can realize the rolling of longitudinal variable-thickness section bar, cold roll forming
Carry out simultaneously in same production unit, with certain advance；But variable-thickness strip surface is not related in the disclosure patent
Coating correlation technique, it is impossible to realize surface have the Varying-thickness section bar of coating requirement on-line continuous production；And, the disclosure is special
The device without multichannel uncoiling section and storage strip, is only capable of realizing the continuous production of monovolume equal thickness coiled material, it is impossible to real in profit
The complete continuous uninterrupted production of existing equal thickness coiled material；The patent intermediate gauge coiled material is needed through pickling Jing after uncoiling, produces work
Sequence is complicated, and device fund input is big.
The content of the invention
It is an object of the invention to provide the continuous producing method and tinuous production of a kind of Varying-thickness section bar, can realize becoming
The continuous production of thickness section bar and continuous coating, overcome existing Varying-thickness section bar production cost height, high labor intensive, can not be continuous
Production, surface cannot coating shortcoming, greatly improve the production efficiency of Varying-thickness section bar, obtain good economic benefit.This
It is bright to substitute the continuous production process in independent in prior art and part, simplify the production process of Varying-thickness section bar, realize change
The continuous uninterrupted production of thickness section bar.
The technical scheme is that：
A kind of continuous producing method of Varying-thickness section bar, it is comprised the following steps：
A) hot rolling acid-cleaning or cold rolling equal thickness strip Jing uncoiler uncoilings, excision is taken the lead or upper a roll of equal thickness strip excision
Magnetic tape trailer；
B) will be welded together with steel taping head and upper a roll of equal thickness steel end by welding machine becomes continous way equal thickness
Strip, and entry loop is entered, store strip；
C) continuous equal thickness strip is tested the speed and thickness measuring through 1# speed measuring devices, 1# measuring thickness devices；
D) continuous equal thickness strip enters milling train, and milling train is according to presetting outlet strip length thickness specification and step c)
Test the speed and thickness measuring carries out Varying-thickness rolling, be rolled into continuous thickening plate；
E) continuous thickening plate carries out thickness measuring and tests the speed through 2# measuring thickness devices, 2# speed measuring devices；
F) continuous thickening plate carries out degreasing into degreasing section；
G) continuous thickening plate carries out burning optimization on line into burning optimization on line section；
H) the continuous thickening plate after being heat-treated carries out plating zinc on surface or aluminum-zinc alloy into Coating section；
I) the continuous thickening plate after Coating carries out leveling into withdrawal straightening machine；
J) the continuous thickening plate after leveling enters outlet looping；
K) continuous thickening plate enters device for rolling and molding, is continuous variable thickness section bar by continuous thickening plate roll-forming；
L) continuous variable thickness section bar carries out thickness measuring and tests the speed through 3# measuring thickness devices, 3# speed measuring devices；
M) continuous variable thickness section bar Jing angle shears according to finished product Varying-thickness section bar length requirement and step l) thickness measurings
And test the speed and carry out fixed length cutting, it is cut to single Varying-thickness section bar；
N) single Varying-thickness section bar carries out the stacking of Varying-thickness section bar in stacking section.
Preferably, the hot rolling or cold rolling equal thickness strip are chosen according to the thickness and performance requirement of finished product Varying-thickness section bar
Hot rolling acid-cleaning equal thickness strip or cold rolling equal thickness strip.
The uncoiling operation of the equal thickness strip 1 runs passage comprising 2 strip uncoilings, setting up and down, each strip operation
Passage is cut comprising 1 uncoiler and 1 crop end.
The crop end is cut for cutting off newly upper equal thickness steel coil strip head and upper equal thickness spring tape tail.
The welding machine is used to weld together new first-class gauge strips steel taping head with upper first-class thickness steel end, the company of being formed
Continuous equal thickness strip.
The entry loop is used to store continuous equal thickness strip, in the case that strip uncoiling lower channel does not switch, enters
Mouth kink keeps higher set amount；When strip uncoiling lower channel switches welder, entry loop release set amount, it is ensured that thickening
The continuous production of degree type material.
The 1# speed measuring devices are used to determine the speed of the continuous equal thickness strip of inlet of rolling mill, and velocity measurement feeds back to and rolls
Machine control system, carries out the feedforward of operation of rolling length control；The 1# speed measuring devices can adopt contact speed measuring device,
Non-contact speed measuring device, preferred laser velocimeter device can be adopted.
The 1# measuring thickness devices are used to determine the continuous equal thickness belt steel thickness of inlet of rolling mill, and thickness measurements feed back to milling train
Control system, carries out the feedforward of operation of rolling THICKNESS CONTROL.
It is continuous variable thickness strip that the milling train is used for continuous equal thickness belt steel rolling, and the mill control system is different
In the milling train of production equal thickness strip, its control system can calculate the continuous uniform thickness in gateway according to the velocity amplitude of inlet of rolling mill strip
The length of degree strip and position, the velocity amplitude that its control system can export strip according to milling train calculates outlet continuous variable thickness band
The length of steel and position；Mill control system combines length, position, thickness and the outlet Varying-thickness strip of entrance equal thickness strip
Length, position, thickness real-time adjustment control is carried out to mill roll-gap, so as to ensure each segment length of continuous thickening plate that milling train is exported
Degree and thickness and precision meet requirement.
The 2# measuring thickness devices are used to determine the thickness that milling train exports continuous each section of thickening plate, and the thickness value for measuring is anti-
Feed mill control system, carry out the feedback of operation of rolling THICKNESS CONTROL.
The 2# speed measuring devices are used to determine the continuous thickening plate thickness of milling train outlet, and thickness measurements feed back to milling train control
System, carries out the feedback of operation of rolling THICKNESS CONTROL.
The degreasing section is used to remove the impurity such as iron powder, ROLLING OIL, the emulsion of continuous variable thickness plate surface, is lower road work
Sequence burning optimization on line is prepared.
The burning optimization on line section is used for the heat treatment such as continuous thickening plate is annealed, is tempered, continuous thickening to ensure
Plate meets performance requirement.
The withdrawal straightening machine is used for the leveling of continuous thickening plate.
The outlet looping is used to store continuous thickening plate, and set amount is with Varying-thickness section bar production process real-time change；Jing rollers
Pressing molding device shaping after continuous variable thickness section bar fixed length cutting when outlet section can reduction of speed, now outlet looping be used for storage roller
The continuous thickening plate of pressing molding device porch, set amount increases, outlet section raising speed after cutting, the release of set amount, thickening so as to ensure
The continuous production of degree type material.
The device for rolling and molding includes multipair shaping roller group, and roller group can be carried out more according to Varying-thickness section bar finished form
Change, so as to by continuous thickening plate roll-forming be continuous variable thickness section bar.
The 3# measuring thickness devices are used to determine the thickness of angle shears continuous variable thickness section bar, and thickness value is fed back to
Angle shears control system；The 3# speed measuring devices are used to determine the speed of continuous variable thickness section bar before angle shears, and
Velocity amplitude is fed back into angle shears control system.
Operating continuous variable thickness section bar can be cut to single Varying-thickness section bar, section bar shearing by the angle shears
It is each that the speed of the continuous variable thickness section bar that the control system of machine can be determined according to 3# speed measuring devices calculates continuous variable thickness section bar
The length value of section, angle shears requires the length value and 3# with reference to said determination according to the length thickness of finished product Varying-thickness section bar
The thickness value of the continuous variable thickness section bar that measuring thickness device is determined is sheared, and continuous variable thickness section bar is cut into single Varying-thickness
Section bar.
The stacking section includes two Stacking units, i.e. Varying-thickness section bar finished product Stacking units and the Varying-thickness section bar dumps of wastes
Pile unit；The entrance Varying-thickness section bar waste product Stacking units of finished product length thickness specification are unsatisfactory for, waste material stacking are carried out, at concentration
Reason；Meet the entrance Varying-thickness section bar finished product Stacking units of finished product length thickness specification, carry out stacking packing process, complete thickening
The continuous production of degree type material.
The Coating using measuring thickness device, speed measuring device, stove nose, point molten metal pot, sinking roller, stabilizing roller,
Air knife, zinc layers measuring instrument, control system.Affect equal thickness strip coating thickness principal element have strip speed, air pressure,
Air knife nozzle gap, knife interlabial gap etc., and thickening plate Coating is different from uniform thickness plate surface coating, thickening plate is along strip traffic direction
Thickness is change, to realize that each uniform thickness section thickness of coating of thickening plate is identical, it is desirable to have special coating process, zinc in the present invention
The control of thickness degree is mainly realized by adjusting the opening degree of air knife.Measuring thickness device is used for the reality of the continuous thickening plate of tracking measurement
Border thickness value, speed measuring device is measured to continuous thickening plate actual speed, and thickness value will feed back to control system with velocity amplitude
In, control system is integrated velocity measurement, the profile of the actual thickening plate by speed measuring device is calculated, due to thickness measuring
The distance of device to air knife is constant, therefore control system may determine that the thickness of the thickening plate that will enter air knife, gas
Knife adjusts knife interlabial gap according to the thickness of thickening plate, the coating of thickening plate difference uniform thickness section is realized, after zinc layers measuring instrument is to plating
The zinc coating thickness of thickening plate surface is measured simultaneously, and measured value is fed back into control system, and control system is micro- according to measured value
The gap of toolsetting lip, it is equal so as to ensure thickening plate difference uniform thickness section thickness of coating.
Beneficial effects of the present invention：
Existing milling train is only milling train unit, uncoiling rolling is required to per coiled strip steel and is crimped, it is impossible to realize the operation of rolling
Continuous production.The present invention arranges the welding machine and kink comprising uncoiler and the strip lower channel cut end to end and before milling train, comes
Realize the thickening rolling of equal thickness steel plate, then be connected with the operation such as degreasing below, heat treatment, Coating, roll-forming, shearing
Get up, realize the continuous production of Varying-thickness section bar.
The present invention adopt Varying-thickness section bar continuous producing method can realize Varying-thickness section bar continuous production and
Line coating, overcomes existing Varying-thickness section bar low production efficiency, production cost height, high labor intensive, is unable to quantity-produced shortcoming,
Greatly improve the production efficiency of Varying-thickness section bar.
The present invention can substitute the continuous production process in independent in prior art and part, simplify production process, realize change
The continuous production of thickness section bar.
Description of the drawings
Fig. 1 is Varying-thickness section bar continuous production processes schematic flow sheet of the present invention.
Fig. 2 is Coating segment process control device layout drawing of the present invention.
Fig. 3 is the outline drawing of continuous thickening plate of the present invention.
Fig. 4 is the schematic diagram of the embodiment of the present invention one.
Specific embodiment
Technical scheme is further illustrated with reference to the accompanying drawings and examples.
Referring to Fig. 1～Fig. 3, a kind of continuous producing method of Varying-thickness section bar of the present invention, it is comprised the following steps：
A) hot rolling acid-cleaning or Jing uncoiler 6a (or 6b) uncoilings of cold rolling equal thickness strip 1；The Jing of equal thickness strip 1 after uncoiling
Crop end is cut 7a (or 7b) excisions and is taken the lead, and upper a roll of equal thickness strip Jing crop ends cut 7b (or 7a) excision magnetic tape trailers；
B) equal thickness strip 1 will be welded together with steel taping head and upper a roll of equal thickness steel end by welding machine 8 and be become
Continous way equal thickness strip 2；Continuous equal thickness strip 2 enters entry loop 9, stores strip；
C) continuous equal thickness strip 2 is tested the speed and thickness measuring through 1# speed measuring devices 10,1# measuring thickness devices 11；
D) continuous equal thickness strip 2 enters milling train 12, and milling train is carried out according to presetting outlet strip length thickness specification
Varying-thickness is rolled, and is rolled into continuous thickening plate 3, and continuous thickening plate is as shown in Figure 3；
E) continuous thickening plate 3 carries out thickness measuring and tests the speed through 2# measuring thickness devices 13,2# speed measuring devices 14；
F) continuous thickening plate 3 carries out degreasing into degreasing section 15；
G) continuous thickening plate 3 carries out burning optimization on line into burning optimization on line section 16；
H) the continuous thickening plate 3 after being heat-treated carries out plating zinc on surface, aluminum-zinc alloy etc. into Coating section 17；
I) the continuous thickening plate 3 after Coating carries out leveling into withdrawal straightening machine 18；
J) the continuous thickening plate 3 after leveling enters outlet looping 19；
K) continuous thickening plate 3 enters device for rolling and molding 20, is continuous variable thickness section bar by the roll-forming of continuous thickening plate 3
4；
L) continuous variable thickness section bar 4 carries out thickness measuring and tests the speed through 3# measuring thickness devices 21,3# speed measuring devices 22；
M) the Jing angle shears 23 of continuous variable thickness section bar 4 carries out fixed length sanction according to the length requirement of finished product Varying-thickness section bar
Cut, be cut to single Varying-thickness section bar 5；
N) single Varying-thickness section bar 5 carries out the stacking of Varying-thickness section bar in stacking section 24.
Referring to Fig. 3, Coating section 17 of the present invention is adopted includes measuring thickness device 17a, speed measuring device 17b, stove nose
17c, point molten metal pot 17d, sinking roller 17e, stabilizing roller 17f, air knife 17g, zinc layers measuring instrument 17h and control system 17i.
Affecting the principal element of equal thickness strip coating thickness has strip speed, air pressure, air knife nozzle gap, knife interlabial gap
Deng, and thickening plate Coating is different from uniform thickness plate surface coating, thickening plate is change along strip traffic direction thickness, real
The each uniform thickness section thickness of coating of existing thickening plate is identical, it is desirable to have special coating process.
The control of zinc coating thickness in the present invention is mainly realized by adjusting the opening degree of air knife 17g.Measuring thickness device 17a is used
In the actual (real) thickness value of the continuous thickening plate 3 of tracking measurement, speed measuring device 17b is measured to continuous thickening plate actual speed, thick
Angle value will be fed back in control system 17i with velocity amplitude, and control system 17i is integrated velocity measurement, calculates reality
By the profile of the thickening plate of speed measuring device 17a, because measuring thickness device 17a is constant to the distance of air knife 17g, therefore control
System 17i may determine that the thickness of the thickening plate that will enter air knife, and air knife adjusts knife interlabial gap according to the thickness of thickening plate,
Realize the coating of thickening plate difference uniform thickness section, zinc layers measuring instrument 17h to plating after the zinc coating thickness of thickening plate surface measure
And, and measured value is fed back into control system, control system according to the gap of measured value fine-adjustment cutter lip, so as to ensure thickening plate not
It is equal with uniform thickness section thickness of coating.
Embodiment
Referring to Fig. 4, the continuous producing method of the thickening U-shaped material of the present invention, comprise the following steps：
1) it is raw material to select cold rolling equal thickness coil of strip according to the thickness of the thickening U-shaped material of finished product；If now this equal thickness coil of strip
Using lower channel, then uncoiling is carried out to coil of strip using uncoiler 6b；
2) the Jing crop ends of equal thickness strip 1 after uncoiling are cut 7b excisions and are taken the lead, while using the upper a roll of upper channel uncoiling
The magnetic tape trailer of equal thickness coil of strip cuts 7a excisions using crop end；
3) the equal thickness strip after cutting off band end to end is welded together by welding machine 8 becomes continous way equal thickness strip 2, this
When the release set amount of entry loop 9, set amount gradually decreases；
4) the continuous equal thickness strip 2 after welding enters entry loop 9, and now kink starts to store strip, and set amount is gradually
Increase, after the increasing cause of set amount is a certain amount of the set amount is kept；
5) subsequently, continuous equal thickness strip 2 is through 1# measuring thickness devices 10,1# speed measuring devices 11；1# speed measuring devices 11 are measured
The speed of the continuous equal thickness strip 2 of the entrance of milling train 12, by velocity amplitude the control system of milling train 12 is fed back to；1# measuring thickness devices 10 are measured
The thickness of continuous equal thickness strip 2, thickness value feeds back to the control system of milling train 12；At the same time, 2# speed measuring devices 13 are measured and rolled
Machine 12 exports the speed of continuous thickening plate 3, and velocity amplitude is fed back into the control system of milling train 12；2# measuring thickness devices 14 measure continuous change
The thickness of slab 2, by thickness value the control system of milling train 12 is fed back to；Speed of the control system of milling train 12 according to the strip steel at entry of milling train 12
Angle value calculates the length of the continuous equal thickness strip in gateway and position；The control system of milling train 12 exports the speed of strip according to milling train 12
Angle value calculates the length of outlet continuous variable thickness strip and position；The control system of milling train 12 combines the length of entrance equal thickness strip
The length of degree, position, thickness and outlet Varying-thickness strip, position, thickness carry out real-time adjustment control to the roll gap of milling train 12, so as to
Ensure that each segment length of continuous thickening plate 3 and thickness and precision of the outlet of milling train 12 meet to require；
6) the continuous thickening plate 3 of the outlet of milling train 12 is after the measurement thickness of 2# measuring thickness devices 14,2# speed measuring devices 13 test the speed
Degreasing is carried out into degreasing section 15 remove the dirts such as iron powder, the ROLLING OIL on the continuous surface of thickening plate 3；
7) the continuous thickening plate 3 after degreasing is annealed into burning optimization on line section 16-- online annealing stove；
8) continuous thickening plate 3 after annealing carries out plating zinc on surface into the online galvanizing section of Coating section 17--；
9) the continuous thickening plate 3 after zinc-plated enters withdrawal straightening machine 18, in withdrawal straightening machine 18 according to presetting elongation percentage to continuous
Thickening plate 3 carries out leveling；
10) the continuous thickening plate 3 Jing after leveling enters outlet looping 19, and outlet looping 19 keeps low set amount；
11) subsequently, continuous thickening plate 3 enters device for rolling and molding 20, and device for rolling and molding 20 arranges multipair roller group, in roller
Gradually roll-forming is the continuous thickening U-shaped materials of continuous variable thickness section bar 4-- to continuous thickening plate 3 under the roll-in of group；
12) continuous thickening U-shaped material 4 measures thickness, the measuring speed of 3# speed measuring devices 21 by 3# measuring thickness devices 22, and will survey
Value feeds back to the thickening U-shaped control system of material cutter 23；
13) the thickening U-shaped control system of material cutter 23 calculates each section of continuous thickening U-shaped material 4 according to velocity measurement
Length and position, the thickening U-shaped control system of material cutter 23 is required according to the length thickness of single each section of the thickening U-shaped material 5 of finished product
With reference to the length of continuous thickening U-shaped material 4, position before thickening U-shaped material cutter 23 and its thickness value for measuring to the company in motion
Continue thickening U-shaped material 4 accurately to be sheared, shearing becomes single thickening U-shaped material；Shear history middle outlet section reduction of speed, outlet looping
19 sets of amounts increase, and after shearing, outlet section speed-raising, 19 sets of amount releases of outlet looping, set amount is reduced, so moved in circles；
14) the thickening U-shaped materials of single Varying-thickness section bar 5-- after clipped enter stacking section 24, are unsatisfactory for finished product length thick
The roller transport of the Jing stackings section 24 of single thickening U-shaped material 5 of metric lattice carries out stacking to waste product Stacking units, then at concentration
Reason；The roller transport of the Jing stackings section 24 of single thickening U-shaped material 5 of finished product length thickness specification is met to finished product Stacking units, enter
The packing of row stacking is processed, and is so moved in circles.So far, single thickening U-shaped material finished product production is completed.
The present invention using uncoiling, welding, Varying-thickness rolling, degreasing, burning optimization on line, online coating, leveling, be rolled into
The production processes such as type, shearing, stacking, realize the continuous production of Varying-thickness section bar and online coating, substantially increase Varying-thickness
The production efficiency of section bar；The present invention can substitute the continuous production process in independent in prior art and part, simplify production process
Flow process, has broad application prospects.
Claims (13)
1. a kind of continuous producing method of Varying-thickness section bar, is characterized in that：Comprise the following steps：
A) hot rolling acid-cleaning or cold rolling equal thickness strip Jing uncoiler uncoilings, excision are taken the lead or upper a roll of equal thickness strip cuts off band
Tail；
B) will be welded together with steel taping head and upper a roll of equal thickness steel end by welding machine becomes continous way equal thickness band
Steel, and entry loop is entered, store strip；
C) continuous equal thickness strip is tested the speed and thickness measuring through 1# speed measuring devices, 1# measuring thickness devices；
D) continuous equal thickness strip enters milling train, and milling train tests the speed according to presetting outlet strip length thickness specification and step c)
And thickness measuring carries out Varying-thickness rolling, continuous thickening plate is rolled into；
E) continuous thickening plate carries out thickness measuring and tests the speed through 2# measuring thickness devices, 2# speed measuring devices；
F) continuous thickening plate carries out degreasing into degreasing section；
G) continuous thickening plate carries out burning optimization on line into burning optimization on line section；
H) the continuous thickening plate after being heat-treated carries out plating zinc on surface or aluminum-zinc alloy into Coating section；
I) the continuous thickening plate after Coating carries out leveling into withdrawal straightening machine；
J) the continuous thickening plate after leveling enters outlet looping；
K) continuous thickening plate enters device for rolling and molding, is continuous variable thickness section bar by continuous thickening plate roll-forming；
L) continuous variable thickness section bar carries out thickness measuring and tests the speed through 3# measuring thickness devices, 3# speed measuring devices；
M) length requirement and step l) thickness measuring and survey of the continuous variable thickness section bar Jing angle shears according to finished product Varying-thickness section bar
Speed carries out fixed length cutting, is cut to single Varying-thickness section bar；
N) single Varying-thickness section bar carries out the stacking of Varying-thickness section bar in stacking section.
2. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：The equal thickness strip uncoiling work
Sequence runs passages comprising 2 strip uncoilings, and into setting up and down, each strip operation passage is comprising 1 uncoiler and 1 crop
Tail is cut.
3. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：The 1# speed measuring devices are used to survey
Determine the speed of the continuous equal thickness strip of inlet of rolling mill, velocity measurement feeds back to mill control system, carries out operation of rolling length
The feedforward of control；The 1# speed measuring devices are contact speed measuring device or non-contact speed measuring device, preferred laser velocimeter device；
The 1# measuring thickness devices are used to determine the continuous equal thickness belt steel thickness of inlet of rolling mill, and thickness measurements feed back to milling train control system
System, carries out the feedforward of operation of rolling THICKNESS CONTROL.
4. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：The milling train is used for will be continuous etc.
Thickness belt steel rolling is continuous variable thickness strip, and the mill control system can be calculated according to the velocity amplitude of inlet of rolling mill strip
The length of the continuous equal thickness strip of entrance and position, the velocity amplitude that its control system can export strip according to milling train calculates outlet
The length of continuous variable thickness strip and position；Mill control system is with reference to the length of entrance equal thickness strip, position, thickness and goes out
The length of mouth Varying-thickness strip, position, thickness carry out real-time adjustment control to mill roll-gap, so as to ensure that it is continuous that milling train is exported
The each segment length of thickening plate and thickness and precision meet requirement.
5. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：The 2# measuring thickness devices are used to survey
Determine milling train and export the thickness of continuous each section of thickening plate, and the thickness value for measuring is fed back into mill control system, carry out rolling
The feedback of journey THICKNESS CONTROL；The 2# speed measuring devices are used to determine the continuous thickening plate thickness of milling train outlet, thickness measurements feedback
To mill control system, the feedback of operation of rolling THICKNESS CONTROL is carried out.
6. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：The device for rolling and molding is included
Multipair shaping roller group, roller group can be changed according to Varying-thickness section bar finished form, so as to be by continuous thickening plate roll-forming
Continuous variable thickness section bar.
7. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：The 3# measuring thickness devices are used to survey
Determine the thickness of angle shears continuous variable thickness section bar, and thickness value is fed back into angle shears control system；The 3# is surveyed
Speed variator is used to determine the speed of continuous variable thickness section bar before angle shears, and velocity amplitude is fed back into angle shears control
System.
8. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：The angle shears will run
In continuous variable thickness section bar be cut to single Varying-thickness section bar, the control system of angle shears is determined according to 3# speed measuring devices
The speed of continuous variable thickness section bar calculate the length value of each section of continuous variable thickness section bar, angle shears is thickening according to finished product
The length thickness of degree type material requires the thickness of the continuous variable thickness section bar determined with reference to the length value and 3# measuring thickness devices of said determination
Angle value is sheared, and continuous variable thickness section bar is cut into single Varying-thickness section bar.
9. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：The stacking section includes two heaps
Pile unit, i.e. Varying-thickness section bar finished product Stacking units and Varying-thickness section bar waste product Stacking units；It is unsatisfactory for finished product length thickness rule
The entrance Varying-thickness section bar waste product Stacking units of lattice, carry out waste material stacking, focus on；Meet entering for finished product length thickness specification
Enter Varying-thickness section bar finished product Stacking units, carry out stacking packing process, complete the continuous production of Varying-thickness section bar.
10. the continuous producing method of Varying-thickness section bar as claimed in claim 1, is characterized in that：Step h) the Coatings
Using by measuring thickness device, speed measuring device, stove nose, point molten metal pot, sinking roller, stabilizing roller, air knife, zinc layers measuring instrument and control
System processed；The control of zinc coating thickness realizes that it is continuously thickening that measuring thickness device is used for tracking measurement by adjusting the opening degree of air knife
The actual (real) thickness value of plate, speed measuring device is measured to continuous thickening plate actual speed, and thickness value will feed back to control with velocity amplitude
In system processed, control system is integrated velocity measurement, calculates the profile of the actual thickening plate by speed measuring device, by
It is constant in the distance of measuring thickness device to air knife, therefore control system may determine that the thickness of the thickening plate that will enter air knife
Degree, air knife adjusts knife interlabial gap according to the thickness of thickening plate, realizes the coating of thickening plate difference uniform thickness section, and zinc layers measuring instrument is to plating
The zinc coating thickness of thickening plate surface afterwards is measured simultaneously, and measured value is fed back into control system, and control system is according to measurement
The gap of value fine-adjustment cutter lip, it is equal so as to ensure thickening plate difference uniform thickness section thickness of coating.
A kind of 11. tinuous productions of Varying-thickness section bar, is characterized in that：Cut, weld including the uncoiler, crop end for setting gradually
At machine, entry loop, 1# speed measuring devices, 1# measuring thickness devices, milling train, 2# measuring thickness devices, 2# speed measuring devices, degreasing section, online heat
Reason section, online coating section, withdrawal straightening machine, outlet looping, device for rolling and molding, 3# measuring thickness devices, 3# speed measuring devices, section bar shearing
Machine ,-stacking section.
The tinuous production of 12. Varying-thickness section bars as claimed in claim 11, is characterized in that：The uncoiling operation includes 2
Strip uncoiling runs passage, and into setting up and down, each strip operation passage is cut comprising 1 uncoiler and 1 crop end.
The tinuous production of 13. Varying-thickness section bars as claimed in claim 11, is characterized in that：It is described to include thickness measuring in coating section
Device, speed measuring device, stove nose, point molten metal pot, sinking roller, stabilizing roller, air knife, zinc layers measuring instrument, control system.
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