CN108405618A - A kind of long material endless rolling connection method and its rolling line - Google Patents
A kind of long material endless rolling connection method and its rolling line Download PDFInfo
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- CN108405618A CN108405618A CN201810450585.5A CN201810450585A CN108405618A CN 108405618 A CN108405618 A CN 108405618A CN 201810450585 A CN201810450585 A CN 201810450585A CN 108405618 A CN108405618 A CN 108405618A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 135
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 64
- 238000003466 welding Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims description 29
- 238000004513 sizing Methods 0.000 claims description 25
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 23
- 239000010959 steel Substances 0.000 abstract description 23
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000009749 continuous casting Methods 0.000 description 26
- 238000001816 cooling Methods 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 11
- 238000003801 milling Methods 0.000 description 7
- 238000010008 shearing Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 208000012886 Vertigo Diseases 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 4
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- 238000012986 modification Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
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- 239000000446 fuel Substances 0.000 description 1
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- 238000005272 metallurgy Methods 0.000 description 1
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- 238000005057 refrigeration Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- B21B1/46—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 metal immediately subsequent to continuous casting
- B21B1/466—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 metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
-
- 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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
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Abstract
The invention discloses a kind of long material endless rolling connection method and its rolling lines, belong to long product rolling field, the endless rolling connection method is that will be welded to connect by friction welding (FW) head and the tail continuously across base among base among the preceding block of crop flying shear after roughing mills and rear block, and implement edge burr removal processing in the welding position of the two.The present invention carries out intermediate base connection after roughing mills and realizes long material endless rolling, effectively reduce the failure rate during excellent steel wire bar production, improve lumber recovery, reduce energy consumption, improve income, and specification rolling is become by the whole realization of roll gap on-line fine, and reduce wedge-shaped segment length when becoming specification, improve lumber recovery.
Description
Technical field
The invention belongs to ferrous metallurgical industry long material Endless Rolling Technology fields, and in particular to a kind of long material endless rolling company
Connect method and its rolling line.
Background technology
Staple product one of of the wire and rod as steel industry, is widely used in building, machinery and Steel Wire Products Industry.This
Outside, excellent special steel bar product is also widely used for the industrial circles such as metallurgy, machinery, automobile, mine, bridge and railway construction.
The production method of wire and rod routine is to produce small billet or small round billet using multiple-strand caster at present, and strand is cut
It is sent to heating furnace by being heat-fed roller-way after cutting, heating furnace will send to milling train after heating strand and roll.Concrete technology flow process is such as
Under：Conticaster → withdrawal straightening machine → cutting machine → conveyor roller → machine for moving steel → steel splitting machine → hot sending roller-way → heating furnace rack → add
Hot stove → roughing mills → intermediate mill → mm finishing mill unit → collection device.Wherein, multithread strand need in batches be moved by machine for moving steel
It send to steel splitting machine frame, then is placed on hot sending roller-way by root by steel splitting machine, carried out by being heat-fed roller transport to heating furnace
Heating, send to mill after heating and is rolled.There is more and deficiency in the production method：1) production procedure
Long, temperature loss height causes milling train power to be significantly increased if being directly heat-fed to temperature when inlet of rolling mill is too low.2) production process
In respectively roll unit after be both needed to be cut off, blank tail portion also needs back-end crop, reduces lumber recovery；4) single rolling time is shorter,
In the presence of frequently stinging steel, throwing steel process, stable online roller gap regulation cannot achieve.
To solve the above problems, many experts and scholars propose a variety of methods.Patent of invention is " for producing Bar Wire Product and type
The continuous casting of material-Direct Rolling device and method " (CN104550237A) proposes the continuous-casting continuous-rolling method of proximate matter Bar Wire Product, but by
It in blank by conticaster to roughing mills, is only kept the temperature using insulation cover, until roughing mills blank surface temperature can be down to
900 DEG C or so, core temperature also only has 950 DEG C, cannot achieve excellent special steel rolling requirements.Patent of invention " is given birth to using residual heat of molten steel
Produce the continuous-casting continuous-rolling method of proximate matter Bar Wire Product " (CN102310078A) propose the continuous-casting continuous-rolling method of proximate matter Bar Wire Product, but by
In continuous casting billet without cut-out, exist too low using production line output when single stream production, milling train is excessive when being produced using multithread, investment
Excessive disadvantage.Patent of invention " a kind of device and its production method producing reinforcing bar without heating zerolling small billet "
(CN103480647A) although eliminating heating furnace, which is divided by lateral deployment device parallel, again using continuous casting billet is multiple rows of
The single mode for being sent into hot sending roller-way after steel, enter after causing hot sending roller-way the continuous casting billet stand-by period is long and temperature drop mistake
Greatly, and due to needing traversing steel splitting, the cooling time of continuous casting billet is also increased, it is seen that the device and currently used hot sending heat
Dress technology has no essential distinction, and continuous casting billet temperature drop is excessive, cannot be satisfied the rolling requirements of milling train, does not have feasibility.Invention is special
Sharp " the continuous casting and rolling device for producing long material " (CN202667242U) heats continuous casting billet using roller hearth type heating furnace, although cancelling
Traditional heating stove, but there is a problem of that equipment investment is high, production still consumes more electric energy or fuel, oxidization burning loss are larger.
Invention content
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, providing, a kind of long material is without a head to be rolled
Connection method processed and its rolling line have technology arrangement simple, and connection method is relatively easy, at low cost, it is easy to accomplish work
Industry metaplasia is produced, and has apparent economic benefit.
The present invention is achieved through the following technical solutions：
A kind of long material endless rolling connection method provided by the invention, will be continuously across base among the preceding block after roughing mills
Base rolled piece is welded to connect by friction welding (FW) head and the tail among rolled piece and rear block, and is implemented at edge burr removal in the welding position of the two
Reason.
Preferably, before friction welding (FW) welding, preceding piece of intermediate base rolled piece is cut by crop flying shear after roughing mills
Head is cut off with back-end crop and to rear piece of intermediate base rolled piece, and makes block centre base rolled piece before rear block centre base rolled piece pursuit, directly
It is synchronized to the two.
Preferably, since the timing being pursued rear piece of intermediate base rolled piece, until burr removal terminates, total time-consuming is less than 20s.
Preferably, when friction welding (FW) welds, the welding surface temperature of base rolled piece and preceding block centre base rolled piece reaches among block after
To 950 DEG C~1050 DEG C, applies upsetting force and complete welding；The mode of friction welding (FW) is linear friction or spin friction, upset pressure
Power is 30MPa~100MPa.
The present invention also provides a kind of long material endless rolling production lines, including conticaster, heating furnace, the roughing mill set gradually
Group, crop flying shear, intermediate mill, mm finishing mill unit and collector unit, the collector unit are cold bed, coil collection system or wire rod
Any one in collection system further includes intermediate base attachment device, is arranged after crop flying shear, before intermediate mill, is used for
Realize above-mentioned endless rolling connection method, including clamping device, friction mechanism, burr removal mechanism, transmission mechanism and upset
Mechanism, the clamping device include for the rear clamping piece of base rolled piece among block after clamping and for base rolled piece among block before being clamped
Preceding clamping piece, the friction mechanism includes support member, moving parts and friction head, and support member is arranged in moving parts
On, friction head is arranged on the supporting member, and transmission mechanism acts on friction head, and upsetting device acts on rear clamping piece；It rubs
Rubbing head is friction knife or frictional disk.
Further, the endless rolling production line further includes that reducing-sizing mill is arranged after mm finishing mill unit；Or it is described without a head
Rolling line further includes that pre-finishing mill group and the setting Laying head unit after mm finishing mill unit are arranged before mm finishing mill unit；Or it is described
Endless rolling production line further includes that pre-finishing mill group is arranged before mm finishing mill unit and sets gradually after mm finishing mill unit to subtract sizing
Unit and Laying head unit.
Further, the roughing mills use grooveless rolling, using de- head between the roughing mills and intermediate mill
Rolling.
Further, the mm finishing mill unit or reducing-sizing mill are configured with online roller gap regulation device.
Present invention specific implementation is as follows：
(1) after intermediate base attachment device is located at roughing mills, before intermediate mill, since roughing mills are not adopted with intermediate mill
With continuous rolling, the biting speed of roughing mills can be effectively improved, reduces and scalds roller phenomenon caused by biting speed is too low, and carry
High production line production capacity；
(2) continuous casting before roughing mills provides blank using Multi-strand Continuous Casting, ensures inlet flow rate and then ensures production line production
Amount；
(3) it by endless rolling, can be sheared according to actual demand, it, can be long according to scale for production line of bar
Degree carries out double length shearing can shear wire rod production line according to the collection devices production capacity such as core frame；
(4) for endless rolling, only blank head carry out roughing, in roll, the croppings such as finish rolling, it is follow-up only need to be according to need
It asks and is sheared, greatly reduce and cut damage amount end to end, can be 5~6 hours with consecutive production under the conditions of being changed without roll, it should
Production time depends on roll wear, the collars of mm finishing mill unit especially more demanding to precision controlling or reducing-sizing mill
Abrasion, raises labour productivity；
(5) when intermediate base rolled piece connection, welding machine is run simultaneously with intermediate base rolled piece, and preceding piece of intermediate base rolled piece is through roughing mills
It is first cut off afterwards, back-end crop work, pursuit process is carried out after the cropping of base rolled piece among block after, waited for and base rolled piece among preceding block
After synchronizing, be attached the linear friction or spin friction in face by the way of friction welding (FW), surface to be welded temperature reach 950 DEG C~
1050 DEG C, upset welding is carried out, unit upsetting force is 30MPa~100MPa, after the completion of connection, carries out edge burr removal,
Calculated being pursued since rear piece of intermediate base rolled piece, until burr removal terminates, total time is less than 20s, due to roughing mills with
It is rolled using de- head between intermediate mill, it is ensured that connection rhythm matching；
(6) roughing mills use grooveless rolling, improve productivity, reduce roll wear；
(7) upstream is mainly limited by current casting speed, and be for excellent steel kind using two streams or three stream caster bases
Ensure to roll rear performance using the heating rolling mode of production is exempted from there are larger bottleneck, the program can effectively improve excellent steel production efficiency
And lumber recovery, and for the production line based on screw-thread steel, general steel, it is improved with casting speed, may be used and exempt from heating rolling life
Production method or continuous casting and tandem rolling production method；
(8) it is to ensure bar or wire product dimensional accuracy, a few online roll gap tune of rack configuration in endless rolling production line end
Engagement positions are generally finish rolling for production line of bar, generally mm finishing mill unit or bar reducing-sizing mill for wire rod production line
Unit or wire rod reducing-sizing mill, roll wear is controlled to product size when being produced by way of with online roller gap regulation
The influence of precision, and caliper Real-time Feedback workpiece measurement after mm finishing mill unit or reducing-sizing mill, and realize the real-time control of roll gap
System；
(9) when online roller gap regulation, to reduce length of transition zone, online subtle adjustment need to be carried out, rolled piece becomes before and after specification
It can guarantee that its dimensional tolerance meets product user requirement, and rejection rate can be reduced by this kind of method of adjustment；Such as in preceding block
Between base rolled piece specification be Φ 20mm bars, in the case where meeting 1 group of precision conditions of GB-T702-2008, variable format to 20.5mm.
The advantage of the invention is that：
1) after intermediate base attachment device is located at roughing mills, before intermediate mill, since roughing mills are not adopted with intermediate mill
With continuous rolling, the biting speed of roughing mills can be improved, and improve production line production capacity；
2) it by endless rolling, can be sheared according to actual demand, production chains are high, can for production line of bar
To carry out double length shearing according to cut lengths, for wire rod production line, can according to the collection devices such as core frame production capacity into
Row shearing；
3) use the endless rolling production technology, greatly reduce and cut damage amount in production process end to end, more common production line at
Material rate improves 0.5~1.5%, can be 5~6 hours with consecutive production under the conditions of being changed without roll, raises labour productivity；
4) roughing mills use grooveless rolling, reduce roll wear；
5) when intermediate base connection, welding machine is run simultaneously with rolled piece, entire connection procedure take it is short, less than 20s, it is ensured that even
Rhythm matching is connect, is conducive to improve productivity；
6) excellent steel production efficiency and lumber recovery are greatly improved；
7) the whole wedge-shaped segment length reduced when rolled piece becomes specification of roll gap on-line fine, improves lumber recovery.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can by following specification realizing and
It obtains.
Description of the drawings
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, wherein：
Fig. 1 is that bar endless rolling production line embodiment 1 of the present invention arranges schematic diagram；
Fig. 2 is that bar endless rolling production line embodiment 2 of the present invention arranges schematic diagram；
Fig. 3 is that high-speed rod endless rolling production line embodiment 1 of the present invention arranges schematic diagram；
Fig. 4 is that high-speed rod endless rolling production line embodiment 2 of the present invention arranges schematic diagram；
Fig. 5 is endless rolling attachment device schematic diagram of the present invention；
Reference numeral in figure：Conticaster 1, heating furnace 2, roughing mills 3, crop flying shear 4, intermediate mill 5, pre-finishing mill group
6, mm finishing mill unit 7, reducing-sizing mill 8, Laying head unit 9, collector unit 10, intermediate base attachment device 11；Afterwards clamping piece 111,
Preceding clamping piece 112, support member 113, moving parts 114, friction head 115, burr removal mechanism 116, transmission mechanism 117, top
Forging machine structure 118；Block centre base rolled piece B before block centre base rolled piece, A afterwards；Front represents Rolling Production direction.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that the diagram provided in following embodiment is only to show
Meaning mode illustrates the basic conception of the present invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Embodiment 1
Referring to Fig.1 with Fig. 5, it is proposed, according to the invention, production technology sequence include：1 continuous casting of conticaster, the heating of heating furnace 2, roughing
The rolling of unit 3, the shearing of crop flying shear 4, intermediate base attachment device 11 are welded, the rolling of intermediate mill 5, the rolling of mm finishing mill unit 7, are subtracted
The rolling of sizing unit 8, collector unit 10 (cold bed) are cooling.The technique is specific as follows：
(1) continuous casting：Using multimachine multithread or click multiple-strand caster production square billet or rectangular bloom, Cross Section of CC Billet be
150mm × 150mm~180mm × 180mm or homalographic rectangular bloom；
(2) use walking beam heating furnace that will step (1) continuous casting billet be heated and be kept the temperature, heating temperature is 950 DEG C
~1300 DEG C；
(3) roughing mills roll：By the way of horizontally and vertically alternative or flat rolling to step (2) heat after square billet into
6 passage roughing mills grooveless rolling of row then carries out 5 passages or 7 passage roughing mills grooveless rollings, rolls for rectangular bloom
Guide and guard are equipped with when processed before and after each rolling mill, flying shear is equipped with after roughing mills, every time deformation temperature is controlled in the operation of rolling
It it is 900 DEG C~1100 DEG C, the steel billet speed of service is 0.15m/s~2.00m/s in the roughing mills operation of rolling；
(4) intermediate blanking device welding：Intermediate base attachment device 11 is arranged after crop flying shear 4, before intermediate mill 5,
For realizing endless rolling connection method, including clamping device, friction mechanism, burr removal mechanism 116,117 and of transmission mechanism
Upsetting device 118, the clamping device include for the rear clamping piece 111 of base rolled piece A among block after clamping and before being used to be clamped
The preceding clamping piece 112 of base rolled piece B among block, the friction mechanism includes support member 113, moving parts 114 and friction head
115, support member is arranged on the moving part, and friction head is arranged on the supporting member, and transmission mechanism acts on friction head, top
Forging machine structure acts on rear clamping piece.Specifically, preceding piece of intermediate base rolled piece B is after roughing mills cropping, back-end crop, intermediate base connects
Device 11 is run simultaneously with its tail portion, and acceleration pursuit is carried out after base rolled piece A croppings among block after, waits for rolling with base among preceding block
Part B spacing is after 20~100mm spacing, spin friction weld tabs or linear friction weld tabs synchronizes to the preceding piece of tail portion intermediate base rolled piece B
And the heads base rolled piece A carry out fast linear among rear block or spin friction, surface to be welded temperature reach 950 DEG C~1050 DEG C, into
Row upset welds, and unit upset force is 30MPa~100MPa, after the completion of connection, edge burr removal is carried out, from latter rolled piece
Start pursuit to start to calculate, until burr removal terminates, total time is less than 20s；Then intermediate base attachment device 11 moves to initial bit
It sets, carries out base rolled piece connection procedure among subsequent rear block.
(5) intermediate mill rolls：Blank after being connected to step (4) carries out intermediate mill rolling, and intermediate mill bites temperature
Degree is 850 DEG C~1000 DEG C, and the rolled piece speed of service is 0.2m/s~6.0m/s in the operation of rolling；
(6) finish rolling and reducing-sizing mill rolling：Rolled piece after being rolled to step (5) intermediate mill carries out finishing mill successively
Group, reducing-sizing mill rolling, for ensure product quality is carried out before and after mm finishing mill unit and reducing-sizing mill water-cool control cooling and
The big pressure rolling of reducing-sizing mill low temperature.700 DEG C~950 DEG C of rolling temperature, in the operation of rolling rolled piece speed of service be 5m/s~
25.0m/s；In addition it controls and rolls by way of with online roller gap regulation in reducing-sizing mill configuration online roller gap regulation, production
Roller wears the influence to product size precision, and caliper Real-time Feedback workpiece measurement after last rack, and realizes the real-time of roll gap
Micro-adjustment；Online roller gap regulation single adjustment amount, which is less than, becomes the specification anteroposterior dimension margin of tolerance or user's size tolerance requirements.
(7) cold bed cools down：Rolled piece after being rolled to step (6) reducing-sizing mill carries out control cooling first, to be managed
Think that microscopic structure and preferably product mechanical performance, rolled piece are sheared, after cold bed cooling through Double Dimension Flying Shears, be collected.
Embodiment 2
With reference to Fig. 2 and Fig. 5, it is proposed, according to the invention, production technology sequence includes：Conticaster continuous casting, heating stove heat, roughing mill
Group rolling, crop flying shear shearing, intermediate base attachment device welding, intermediate mill rolling, mm finishing mill unit rolling, cold bed cool down the work
Skill is specific as follows：
(1) continuous casting：Using multimachine multithread or click multiple-strand caster production square billet or rectangular bloom, Cross Section of CC Billet be
150mm × 150mm~180mm × 180mm or homalographic rectangular bloom；
(2) use walking beam heating furnace that will step (1) continuous casting billet be heated and be kept the temperature, heating temperature is 950 DEG C
~1300 DEG C；
(3) roughing mills roll：By the way of horizontally and vertically alternative or flat rolling to step (2) heat after square billet into
6 passage roughing mills grooveless rolling of row then carries out 5 passages or 7 passage roughing mills grooveless rollings, rolls for rectangular bloom
Guide and guard are equipped with when processed before and after each rolling mill, flying shear is equipped with after roughing mills, every time deformation temperature is controlled in the operation of rolling
It it is 900 DEG C~1100 DEG C, the steel billet speed of service is 0.15m/s~2.00m/s in the roughing mills operation of rolling；
(4) intermediate blanking device welding：Preceding piece of intermediate base rolled piece is after roughing mills cropping, back-end crop, intermediate base attachment device
Run simultaneously with its tail portion, acceleration pursuit carried out after the cropping of base rolled piece among block after, wait for be with base rolled piece spacing among preceding block
After 20~100mm spacing, spin friction weld tabs or linear friction weld tabs are synchronized among preceding piece of intermediate base rolled piece tail portion and rear block
Base workpiece front end carries out fast linear or spin friction, and surface to be welded temperature reaches 950 DEG C~1050 DEG C, carries out upset welding,
Unit upset force is 30MPa~100MPa, after the completion of connection, carries out edge burr removal, is chased after since rear piece of intermediate base rolled piece
It catches up with and starts to calculate, until burr removal terminates, total time is less than 20s；Then intermediate base attachment device moves to initial position, after progress
The intermediate base rolled piece connection procedure of continuous rear piece.
(5) intermediate mill rolls：Blank after being connected to step (4) carries out intermediate mill rolling, and intermediate mill bites temperature
Degree is 850 DEG C~1000 DEG C, and the rolled piece speed of service is 0.2m/s~6.0m/s in the operation of rolling；
(6) mm finishing mill unit rolls：Rolled piece after being rolled to step (5) intermediate mill carries out mm finishing mill unit rolling, to ensure
Product quality carries out water-cool control cooling and the big pressure rolling of mm finishing mill unit low temperature before and after mm finishing mill unit.700 DEG C of rolling temperature
~950 DEG C, the rolled piece speed of service is 5m/s~25.0m/s in the operation of rolling；In addition online roller gap regulation is configured in mm finishing mill unit,
Influence of the roll wear to product size precision is controlled when production by way of with online roller gap regulation, and is calibrated after last rack
Instrument Real-time Feedback workpiece measurement, and realize the real-time micro-adjustment of roll gap；Before online roller gap regulation single adjustment amount is less than change specification
Dimensional tolerance range or user's size tolerance requirements afterwards.
(7) cold bed cools down：Rolled piece after being rolled to step (6) mm finishing mill unit carries out control cooling first, to obtain ideal
Microscopic structure and preferably product mechanical performance, rolled piece are sheared, after cold bed cooling through Double Dimension Flying Shears, are collected.
Embodiment 3
With reference to Fig. 3 and Fig. 5, it is proposed, according to the invention, production technology sequence includes：Conticaster continuous casting, heating stove heat, roughing mill
Group rolling, crop flying shear shearing, intermediate base attachment device welding, intermediate mill rolling, the rolling of pre-finishing mill group, mm finishing mill unit are rolled
System, reducing-sizing mill rolling, Laying head spinning, air-cooled line is cooling, core puts up volume, PF lines cool down.The technique is specific as follows：
(1) continuous casting：Using multimachine multithread or click multiple-strand caster production square billet or rectangular bloom, Cross Section of CC Billet be
150mm × 150mm~180mm × 180mm or homalographic rectangular bloom；
(2) use walking beam heating furnace that will step (1) continuous casting billet be heated and be kept the temperature, heating temperature is 950 DEG C
~1300 DEG C；
(3) roughing mills roll：By the way of horizontally and vertically alternative or flat rolling to step (2) heat after square billet into
6 passage roughing mills grooveless rolling of row then carries out 5 passages or 7 passage roughing mills grooveless rollings, slightly for rectangular bloom
Flying shear is equipped with after milling train group, it is 900 DEG C~1100 DEG C that every time deformation temperature is controlled in the operation of rolling, the roughing mills operation of rolling
The middle steel billet speed of service is 0.15m/s~2.00m/s；
(4) intermediate base attachment device welding：Preceding piece of intermediate base rolled piece is after roughing mills cropping, back-end crop, intermediate base connection
Device is run simultaneously with its tail portion, is carried out acceleration pursuit after the cropping of base rolled piece among block after, is waited between base rolled piece among preceding block
After for 20~100mm spacing, spin friction weld tabs or linear friction weld tabs are synchronized to preceding piece of intermediate base rolled piece tail portion and rear block
Intermediate base workpiece front end carries out fast linear or spin friction, and surface to be welded temperature reaches 950 DEG C~1050 DEG C, carries out upset weldering
It connects, unit upset force is 30MPa~100MPa, after the completion of connection, carries out edge burr removal, since rear piece of intermediate base rolled piece
Pursuit starts to calculate, until burr removal terminates, total time is less than 20s；Then intermediate base attachment device moves to initial position, carries out
Base rolled piece connection procedure among block after subsequent.
(5) intermediate mill rolls：Blank after being connected to step (4) carries out intermediate mill rolling, and intermediate mill bites temperature
Degree is 850 DEG C~1000 DEG C, and the rolled piece speed of service is 0.2m/s~6.0m/s in the operation of rolling；
(6) pre-finishing mill group, mm finishing mill unit and reducing-sizing mill rolling：Rolled piece after being rolled to step (5) intermediate mill
The rolling of pre-finishing mill group, mm finishing mill unit rolling and reducing-sizing mill rolling are carried out respectively, to ensure product quality in pre-finishing mill
Group, mm finishing mill unit and the front and back progress water-cool control cooling of reducing-sizing mill rolling and the big pressure rolling of reducing-sizing mill low temperature.It rolls
700 DEG C~950 DEG C of temperature processed, the rolled piece speed of service is 5m/s~120.0m/s in the operation of rolling；In addition it is assembled in reducing sizing mill
Set online roller gap regulation, when production controls shadow of the roll wear to product size precision by way of with online roller gap regulation
It rings, and caliper Real-time Feedback workpiece measurement after last rack, and realizes the real-time micro-adjustment of roll gap；Online roller gap regulation single tune
Whole amount, which is less than, becomes the specification anteroposterior dimension margin of tolerance or user's size tolerance requirements.
(7) Laying head spins：It is spun into after control is cooling the wire rod after reducing-sizing mill rolling in step (6)
Circle, laying temperature are 700 DEG C~1000 DEG C；
(8) air-cooled line is cooling, collection retracting collects and the cooling of PF lines：It carries out air-cooled to the wire rod after spinning in step (7) or protects
Temperature control is freezed but, after collection is rolled up, is carried out the cooling of PF lines and is collected.
Embodiment 4
With reference to Fig. 4 and Fig. 5, it is proposed, according to the invention, production technology sequence includes：Conticaster continuous casting, heating stove heat, roughing mill
Group rolling, crop flying shear shearing, intermediate base attachment device welding, intermediate mill rolling, the rolling of pre-finishing mill group, mm finishing mill unit are rolled
System, Laying head spinning, air-cooled line is cooling, core puts up volume, PF lines cool down.The technique is specific as follows：
(1) continuous casting：Using multimachine multithread or click multiple-strand caster production square billet or rectangular bloom, Cross Section of CC Billet be
150mm × 150mm~180mm × 180mm or homalographic rectangular bloom；
(2) use walking beam heating furnace that will step (1) continuous casting billet be heated and be kept the temperature, heating temperature is 950 DEG C
~1300 DEG C；
(3) roughing mills roll：By the way of horizontally and vertically alternative or flat rolling to step (2) heat after square billet into
6 passage roughing mills grooveless rolling of row then carries out 5 passages or 7 passage roughing mills grooveless rollings, slightly for rectangular bloom
Flying shear is equipped with after milling train group, it is 900 DEG C~1100 DEG C that every time deformation temperature is controlled in the operation of rolling, the roughing mills operation of rolling
The middle steel billet speed of service is 0.15m/s~2.00m/s；
(4) intermediate base attachment device welding：Preceding piece of intermediate base rolled piece is after roughing mills cropping, back-end crop, intermediate base connection
Device is run simultaneously with its tail portion, is carried out acceleration pursuit after the cropping of base rolled piece among block after, is waited between base rolled piece among preceding block
After for 20~100mm spacing, spin friction weld tabs or linear friction weld tabs are synchronized to preceding piece of intermediate base rolled piece tail portion and rear block
Intermediate base workpiece front end carries out fast linear or spin friction, and surface to be welded temperature reaches 950 DEG C~1050 DEG C, carries out upset weldering
It connects, unit upset force is 30MPa~100MPa, after the completion of connection, carries out edge burr removal, since rear piece of intermediate base rolled piece
Pursuit starts to calculate, until burr removal terminates, total time is less than 20s；Then intermediate base attachment device moves to initial position, carries out
Base rolled piece connection procedure among block after subsequent.
(5) intermediate mill rolls：Blank after being connected to step (4) carries out intermediate mill rolling, and intermediate mill bites temperature
Degree is 850 DEG C~1000 DEG C, and the rolled piece speed of service is 0.2m/s~6.0m/s in the operation of rolling；
(6) pre-finishing mill group, mm finishing mill unit rolling：Rolled piece after being rolled to step (5) intermediate mill carries out pre- essence respectively
The rolling of milling train group, mm finishing mill unit rolling rolling, to ensure that product quality carries out water cooling control before and after pre-finishing mill group, mm finishing mill unit
Refrigeration is but and the big pressure of mm finishing mill unit low temperature rolls.700 DEG C~950 DEG C of rolling temperature, the rolled piece speed of service is in the operation of rolling
5m/s~120.0m/s；In addition in mm finishing mill unit configuration online roller gap regulation, production by way of with online roller gap regulation
Influence of the roll wear to product size precision, and caliper Real-time Feedback workpiece measurement after last rack are controlled, and realizes roll gap
Real-time micro-adjustment；Online roller gap regulation single adjustment amount is less than the change specification anteroposterior dimension margin of tolerance or user's dimensional tolerance is wanted
It asks.
(7) Laying head spins：It is spun into after control is cooling the wire rod after mm finishing mill unit rolling in step (6)
Circle, laying temperature are 700 DEG C~1000 DEG C；
(8) air-cooled line is cooling, collection retracting collects and the cooling of PF lines：It carries out air-cooled to the wire rod after spinning in step (7) or protects
Temperature control is freezed but, after collection is rolled up, is carried out the cooling of PF lines and is collected.
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, it is clear that those skilled in the art described in upper
Various changes and modifications can be made to the invention without departing from the spirit and scope of the present invention.If in this way, this of the present invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to change comprising these a little modifications and variations
Including dynamic and modification.
Claims (8)
1. a kind of long material endless rolling connection method, which is characterized in that will be rolled continuously across base among the preceding block after roughing mills
Base rolled piece is welded to connect by friction welding (FW) head and the tail among part and rear block, and is implemented at edge burr removal in the welding position of the two
Reason.
2. long material endless rolling connection method according to claim 1, which is characterized in that before friction welding (FW) welding, lead to
Crop flying shear carries out cropping and back-end crop to preceding piece of intermediate base rolled piece and is cut to rear piece of intermediate base rolled piece after crossing roughing mills
Head, and make block centre base rolled piece before rear block centre base rolled piece pursuit, until the two is synchronous.
3. long material endless rolling connection method according to claim 2, which is characterized in that since rear piece of intermediate base rolled piece
Timing is pursued, until burr removal terminates, total time-consuming is less than 20s.
4. according to the long material endless rolling connection method of claim 1-3 any one of them, which is characterized in that welded in friction welding (FW)
When, the welding surface temperature of base rolled piece and preceding block centre base rolled piece reaches 950 DEG C~1050 DEG C among block after, applies upsetting force
Complete welding；The mode of friction welding (FW) is linear friction or spin friction, and upsetting force is 30MPa~100MPa.
5. a kind of long material endless rolling production line, including set gradually conticaster (1), heating furnace (2), roughing mills (3), cut
Head flying shear (4), intermediate mill (5), mm finishing mill unit (7) and collector unit (10), the collector unit are cold bed, coil and collect system
Any one in system or wire collecting system, which is characterized in that further include intermediate base attachment device (11), be arranged in crop flying shear
Later, before intermediate mill, for realizing endless rolling connection method according to any one of claims 1-4, including clamping
Mechanism, friction mechanism, burr removal mechanism (116), transmission mechanism (117) and upsetting device (118), the clamping device include
Rear clamping piece (111) for base rolled piece (A) among block after clamping and the preceding clamping piece for base rolled piece (B) among block before being clamped
(112), the friction mechanism includes support member (113), moving parts (114) and friction head (115), and support member setting exists
On moving parts, friction head is arranged on the supporting member, and transmission mechanism acts on friction head, and upsetting device acts on rear clamping
On part.
6. long material endless rolling production line according to claim 5, which is characterized in that the endless rolling production line also wraps
It includes and reducing-sizing mill (8) is set after mm finishing mill unit；Or the endless rolling production line further includes being arranged in advance before mm finishing mill unit
Mm finishing mill unit (6) and the setting Laying head unit (9) after mm finishing mill unit；Or the endless rolling production line further includes in finishing mill
Pre-finishing mill group (6) is set before group and sets gradually reducing-sizing mill (8) and Laying head unit (9) after mm finishing mill unit.
7. long material endless rolling production line according to claim 6, which is characterized in that the roughing mills use anapsid
Rolling is rolled between the roughing mills and intermediate mill using de- head.
8. long material endless rolling production line according to claim 7, which is characterized in that the mm finishing mill unit or reducing sizing mill
Group is configured with online roller gap regulation device.
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Cited By (6)
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| CN110052495A (en) * | 2019-04-24 | 2019-07-26 | 中冶赛迪工程技术股份有限公司 | A kind of long material endless rolling production line of short route and its milling method |
| CN110125177A (en) * | 2019-04-17 | 2019-08-16 | 无锡兴澄特种材料有限公司 | A kind of hot rolling wire production method improving surface quality |
| CN110653262A (en) * | 2019-09-20 | 2020-01-07 | 中冶赛迪工程技术股份有限公司 | Production line process equipment for endless rolled bar |
| CN110961452A (en) * | 2019-12-16 | 2020-04-07 | 中冶赛迪工程技术股份有限公司 | Continuous rectangular casting billet headless rolling production process and production line |
| CN111530924A (en) * | 2020-05-08 | 2020-08-14 | 凌源钢铁股份有限公司 | Method for producing nonferrous metal wires of different specifications by using high-speed wire mill |
| CN111571216A (en) * | 2020-05-27 | 2020-08-25 | 重庆工商大学 | Process centralized production line capable of improving rolling quality of pipeline steel |
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Application publication date: 20180817 |