CN104759892B - The production system and its production method of a kind of channel steel - Google Patents
The production system and its production method of a kind of channel steel Download PDFInfo
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- CN104759892B CN104759892B CN201510127514.8A CN201510127514A CN104759892B CN 104759892 B CN104759892 B CN 104759892B CN 201510127514 A CN201510127514 A CN 201510127514A CN 104759892 B CN104759892 B CN 104759892B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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Abstract
The present invention provides a kind of production system and its production method of channel steel, including set gradually feeding device, heater, Hot Rolling Mill, roll bending unit and cut length measuring device；From flat steel billet materials, after being heated by electrical induction device, rolling deformation is carried out into the milling train of two frames, first passage is thinned for thickness, second passage is used for the plate shape shaping of rolled piece section before hot bending, and two rolling mills carry out deformation rolling to raw material simultaneously, in tandem rolling state.By two simplified passage hot rollings, each section thickness and template after channel steel tiling expansion are rolled out, recycles waste heat to enter continuous hot bending unit and carries out hot bending, channel steel product is obtained after being handled through scale sawing, cooling and finishing.The present invention simplifies production technology, simplifies groove rolling passage, lowers production difficulty, improves production success rate, lumber recovery；Milling train quantity is reduced, shortens production line, realizes that short route is produced, reduces investment and follow-up maintenance cost.
Description
Technical field
The present invention relates to iron and steel metallurgical industry rolling technical field, more particularly to a kind of novel compact formula short route channel type
The production system and its production method of steel.
Background technology
Conduit steel is a kind of groove profile (or c-type), and leg carries the steel of certain tooth form, by being welded with upper links
The mode such as connect/rivet, be embedded in concrete, surface is concordant with concrete.Conduit steel has Multiple Type, it have one it is anti-loosening
Design, special T-bolt is used cooperatively, both fastened conveniently, can also arbitrarily adjust, be many Larger Engineering Projects such as railway
The preferred fastener on tunnel, bridge, airport etc..With developing rapidly for China's high ferro, the production after Coating is handled
Product, because its higher antiseptic power, outstanding live load loading capability, be installed on easy to maintenance, safe and reliable the features such as, in high ferro
It is used widely and approves in tunnel.
Germany of foreign countries HALFEN conduit steel occupies China staple market at present, and separately some is by domestic professional production enterprise
There is provided.The production of current conduit steel adds roll shape bending molding process using groove rolling, that is, first passes through traditional pass rolling mode
The rectangle of big cross section/square raw material is rolled into " M " type intermediate product needed for roll bending, then again by with effigurate
" M " type rolled piece is bent to finished section finished product by roll shape roll, as depicted in figs. 1 and 2, due to current main rolling deformation process
Using being：Traditional multi-pass groove rolling method production.The drawbacks of this production method, mainly has：Plant equipment is old, complicated, stupid
Weight；It is groove rolling complex procedures, cumbersome；Hole type design required precision is higher, and guide unit design is complicated, and production adjustment difficulty is big；Become
Shape passage is more, and roll consumption is high；Follow-up hot bending is also carried out on conventional mill so that based on the life of this traditional processing technology
Conduit steel is produced, useless probability is rolled greatly, lumber recovery is low, is usually no more than 90%, causes production cost high.
The content of the invention
The deficiencies in the prior art in view of the above, the purpose of invention is to provide a kind of production system of channel steel,
By hot rolling and the online seamless connection of hot bending, while simplifying hot-rolled process, improve product lumber recovery, reduction and roll useless rate, reduction life
Cost is produced, production efficiency is improved.
In order to achieve the above objects and other related objects, a kind of production system of channel steel of present invention offer, including according to
The feeding device of secondary setting, heater, Hot Rolling Mill, roll bending unit and cut length measuring device；The Hot Rolling Mill at least includes
For the second milling train that the first milling train of sotck thinkness is thinned and is molded for plate face, it is provided with the roll of second milling train
The forming tank corresponding with the section thickness of channel steel tiling expansion.
The main function of first milling train：Thickness is thinned provides supplied materials for plate face shaping；Abolish plus thermogenetic iron scale.
The main function of second rolling mill：Plate face is molded, and finished section supplied materials is provided for hot bending；The shaping of groove internal tooth can also be carried out to roll
System.It is rolled into after final required plate face shape, being sent directly into continuous roll bending machine group by conveyor roller carries out multi-pass hot bending
Shaping.Hot bending passage can be examined according to the combined factors such as hot bending unit capacity, the cross dimensions of channel steel and characteristic, production capacity
Consider, naturally it is also possible to be clod wash.
The system groove rolling passage is simplified so that hole type design and guide and guard simplifications, execute-in-place are simple, lower life
Difficulty is produced, production success rate, lumber recovery is improved；Milling train quantity is reduced, milling train specifications and models are reduced, shortens production line, realizes short
Flow is produced.
As preferred：Iron scale remove device is provided between the heater and the first milling train；Or heater
Iron scale remove device is provided between the first milling train and between the first milling train and the second milling train.
Iron scale remove device is used to remove the iron scale formed after heating.The medium of iron scale remove device
Preferably the compressed air of high pressure, is removed by way of purging, it is ensured that the temperature that rolled piece enters after milling train, certainly
Water under high pressure can be used.
As preferred：First milling train and the second milling train are duo mill, and the first milling train is flat roll mill, described second
Be provided with the first groove on one roll of milling train, be provided with two the second grooves on another roll, first groove with
Second groove constitutes forming tank, and first groove is corresponding with the width of channel steel tiling expansion, the second groove and channel type
The kink correspondence of the sideband internal tooth of steel two.
As preferred：First milling train, close to being connected, is set with the second milling train on second milling train or roll bending unit
There is the rolling roll shape for rolling channel steel internal tooth.The first milling train and the second milling train symmetric rolling can be realized, and continuously
Rolling, reduces the cooling of rolled piece.
As preferred：The heater is electrical induction device, and described cut is additionally provided with cooling dress after length measuring device
Put and calibration devices, calibration devices are mainly used in straightening or adjust curved, reconditioning, drilling, packing etc..
In order to further realize the implementation of the present invention, present invention simultaneously provides a kind of production method of channel steel, including
Following steps：
S1, sorting, choose flat steel or steel billet is used as raw material；Raw material is selected and channel steel each several part original depth phase
Near flat steel.Raw thickness is different because of channel steel difference.
S2, heating, temperature needed for raw material is heated into hot rolling, temperature needed for raw material is heated to hot rolling through electrical induction device
Degree, about 1000 DEG C.
S3, raw thickness are thinned, and are rolled in rolling unit；Ironed to the close channel steel tiling expansion of raw material
Thickness；
S4, plate face shaping, the rolled piece obtained in step S3 are rolled into the shape of channel steel tiling expansion；
S5, hot bending, pass through multi-pass hot bending into channel steel by the rolled piece obtained in step S4；
S6, cut it is offline, channel steel jagsaw machine-cut after hot bending into scale needed for final, and through cooling, subsequently
It is offline after finishing processing.
As preferred：In the step 3, raw material reduction is 5%~50%.
To simplify rolling process, near-net-shape blank, i.e., flat steel billet or steel are selected.Pressure of the raw thickness Jing Guo two passages
Contracting, obtains each section thickness after channel steel tiling.Therefore, the selection of drafts must be economic and practical and reasonable.It is such as too big,
Then milling train reduction in pass is bigger than normal, and mill capacity is higher, or increases passage to reduce mill load, in addition, can also cause flat
Flat material is produced in big pressure and significantly spreaded, the width after influence finished product tiling；Such as too small, then molding effect is not good.Therefore,
Typically consider every time 1.05~1.4 lengthening coefficient.So two passage overall elongations control takes lengthening coefficient to compromise in 1.6
Value.Lengthening coefficient：Thickness after thickness/shaping before shaping.
Raw material reduction：Thickness before being molded in thickness before (thickness after thickness-roll forming before shaping)/shaping, the present invention
Thickness is the thickness after heating and rolling after as raw thickness, roll forming.
As preferred：Rolled, be provided with the step S4 on the roll of milling train by flat roll mill in the step S3
The forming tank corresponding with the section thickness of channel steel tiling expansion, the rolled piece is same in step S3 and step S4 milling train
When deform, formed continuous rolling.
As preferred：In the step S4, what channel steel tiling deployed is shaped as banding, and the both sides of banding are turned over downwards
Being formed has internal tooth on the inside of folding portion, folding portion, the internal tooth is molded in steps s 4 or s 5, i.e. the internal tooth of channel steel,
Roll and draw in the plate shape roll forming of second rolling mill, also can be in the first passage of hot bending unit, band tooth hot bending roll-in is obtained
Go out.
As preferred：The step abolished and add thermogenetic iron scale is additionally provided between the step S2 and step S4
Suddenly, the step of or between the step S2 and step S3 and between step S3 and step S4 being provided with removing iron scale；
It is more than or equal to 4 roads to obtain hot bending passage in good hot bending performance, the step S5.
As described above, the beneficial effect of invention is：
1) simplify production technology, simplify groove rolling passage, lower production difficulty, improve production success rate, lumber recovery；
2) milling train quantity is reduced, milling train specifications and models are reduced, shortens production line, realizes that short route is produced, reduces enterprise one
Secondary property investment and follow-up maintenance cost；
3) roll consumption is reduced, production cost is reduced；
4) groove rolling passage is simplified so that hole type design and guide and guard simplifications, execute-in-place are simple, and production efficiency is carried
It is high；
5) seamless connection hot rolling, hot bending process, energy-saving, realizes channel steel short route, standardization, batch metaplasia
Production, productivity effect is maximized.
6) the inventive method is applied to the production of other specifications of channel steel, is also applied for similar section configuration shaped steel product
Production.
Brief description of the drawings
Fig. 1 is channel steel section structure schematic diagram；
Fig. 2 serves as reasons " M " type rolled piece roll bending into finished section finished product schematic diagram；
Fig. 3 is channel steel traditional processing technology flow；
Fig. 4 is the arrangement relation figure of production system in the embodiment of the present invention；
Fig. 5 is the roll profile schematic diagram of the second milling train；
Fig. 6 is the flat raw material sectional schematic diagram chosen in the embodiment of the present invention；
Fig. 7 is process schematic diagram in the embodiment of the present invention；
Fig. 8 is process chart of the invention.
Piece mark explanation
01 channel steel body
02 folding portion
03 internal tooth
1 feeding device
2 electrical induction devices
3 Hot Rolling Mills
30 forming tanks
31 first milling trains
32 second milling trains
33 first grooves
34 second grooves
4 roll bending units
5 cut length measuring device
6 cooling devices
7 iron scale remove devices
8 calibration devices
Embodiment
Illustrate the embodiment of invention by particular specific embodiment below, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of invention easily.
Embodiment
It is the structural representation of heretofore described channel steel shown in Fig. 1, including channel steel body 01, folding portion
02, and the internal tooth 03 of the inner side of folding portion 02 is located at, middle after channel steel tiling expansion is tabular, and both sides still have downwards
Folding portion 02.
Fig. 2 and Fig. 3 show the signal of traditional mode of production process, that is, first pass through traditional pass rolling mode by the square of big cross section
Shape/square raw material is rolled into " M " type intermediate product needed for roll bending, then again by being incited somebody to action with effigurate roll shape roll
" M " type rolled piece bends to finished section finished product.Plant equipment is old, complicated, heaviness；It is groove rolling complex procedures, cumbersome；Pass
Design accuracy requires higher, and guide unit design is complicated, and production adjustment difficulty is big；Rolling pass is more, and roll consumption is high；Subsequent thermal is curved
Type is also carried out on conventional mill so that produce conduit steel based on this traditional processing technology, rolls useless probability greatly, lumber recovery is low,
Cause production cost high.
As shown in Figure 4 and Figure 5, the present invention provides a kind of production system of channel steel, including the feeding dress set gradually
Put 1, electrical induction device 2, Hot Rolling Mill 3, roll bending unit 4, cut length measuring device 5, cooling device 6 and calibration devices 8；Hot rolling
Unit 3 has the first milling train 31 and the second milling train 32 close to the composition that is connected, and is provided with and channel steel on the roll of the second milling train 32
Tile the section thickness deployed the forming tank 30 corresponding with version type.Between the milling train 31 of heater 2 and first and first
Iron scale remove device 7 is equipped between the milling train 32 of milling train 31 and second.Iron scale remove device 7 is used for shape after heating
Into iron scale remove, purged using the compressed air of high pressure in this example.
The main function of first milling train 31：Thickness is thinned provides supplied materials for plate face shaping；Abolish plus thermogenetic iron oxide
Skin.The main function of second rolling mill：Plate face is molded, and finished section supplied materials is provided for hot bending；Groove internal tooth shaping can also be carried out
Rolling.It is rolled into after final required plate face shape, being sent directly into continuous roll bending machine group 4 by conveyor roller carries out multi-pass heat
Roll forming.Hot bending passage can be according to the combined factors such as hot bending unit capacity, the cross dimensions of channel steel and characteristic, production capacity
Consider, naturally it is also possible to be clod wash.It can realize that the first milling train 31 is rolled with the synchronous deformation of the second milling train 32, and continuously roll
System, reduces the cooling of rolled piece.
The milling train 32 of first milling train 31 and second is duo mill, and the first milling train 31 is flat roll mill, and described second rolls
It is provided with one roll of machine 32 on first groove 33, another roll and is provided with two the second grooves 34, described first is recessed
The groove 34 of groove 33 and second constitutes forming tank 30, and first groove 33 is corresponding with the width of channel steel tiling expansion, and second
Groove 34 is corresponding with the kink of the sideband internal tooth of channel steel two.Being provided with second milling train 32 or roll bending unit 4 is used for
Roll the rolling roll shape of channel steel internal tooth.
As shown in Figure 6 to 8, the present invention simultaneously additionally provide a kind of production method of channel steel, for 30mm ×
The channel steel production method of 26mm specific standard sizes is described in detail, and specifically includes following steps：
S1, raw material selection
Raw material selects the flat steel or steel billet close with channel steel each several part original depth.Raw material is selected in this example
98mm × 6mm band steel, the selection of raw material width considers the similar width after the tiling expansion of channel steel each several part, raw thickness
Selection consider two passages of subsequent hot rolled certain depression degree and channel steel its flat presentation under thickness needed for, 2.9mm
With two different-thickness of 3.5mm, i.e. the thickness of folding portion 03 is 3.5mm in Fig. 1, and the thickness of channel steel body 01 is 2.9mm.
Temperature needed for S2, raw material are heated to hot rolling through electrical induction device 2, it is clear by iron scale after about 1000 DEG C
Except device removes the iron scale produced after heating, rolled subsequently into the first milling train 31.
S3, the first milling train 31 are flat roll mill, and the thick blank pressures of 6mm are deformed into 3.5mm~4mm thickness；First rolls
Machine 31 has been abolished plus thermogenetic iron scale while rolling, is removed carried out again by iron scale cleaning machine after this
Secondary cleaning.
S4 then again through the second milling train 32 be rolled into channel steel tiling deployed condition after section needed for size, second
Milling train 32 is the corresponding forming tank 30 of section thickness for being carved with correspondence channel steel tiling expansion, while being carried out to groove profile internal tooth
Tooth formation rolling.First milling train 31 and the second milling train 32 are close to arrangement, and rolled piece is deformed simultaneously in two rolling mills, and formation is continuously rolled
System, shortens rolling line length, reduces the temperature drop of rolled piece.
S5, it is made after final required plate face shape, being sent directly into continuous hot bending unit by conveyor roller carries out multiple tracks
Secondary hot bending.Hot bending passage can be according to the factor such as hot bending unit capacity, the cross dimensions of channel steel and characteristic, production capacity
Consider, therefore hot bending passage is generally more than 4 roads.
Channel steel jagsaw machine-cut after S6, hot bending is into after scale needed for final, cooling.
S7, eventually pass through follow-up finishing working process：Curved, reconditioning, drilling, packing etc. are adjusted in straightening, needed for obtaining user
Channel steel product.
From the flat steel close with channel steel each several part original depth, after being heated by electrical induction device 2,
Rolling deformation is carried out into the milling train of two frames, the first passage is thinned for thickness, and the second passage is molded for plate shape, and two
Rolling mill carries out deformation rolling to raw material simultaneously, in tandem rolling state, by two simplified passage hot rollings, rolls out channel steel and puts down
Thickness and template after drawout, recycle waste heat to enter continuous hot bending unit and carry out hot bending, through under scale sawing, cooling
Being obtained after line, follow-up finishing processing can also be by the way of clod wash in final channel steel product, certain other embodiment, this
Feeding device 1, roll bending unit 4 in invention, to cut length measuring device 5, cooling device 6 and calibration devices 8 be all in the prior art may be used
With offer, it will not be repeated here, the present invention mainly realizes that short route is rolled by the difference and rolling mode of sorting.
The present invention changes the mode of production of traditional multi-pass groove rolling and roll bending, makes full use of channel steel finished product section
Feature, simplifies groove rolling process, and realizes seamless connection with roll bending, forms the new short route hot rolling of channel steel and heats curved life
Production. art method, improves product lumber recovery, reduction and rolls useless rate, reduce production cost, improve production efficiency.Using the life of the present invention
Production method, can be achieved standardization, the mass production of short route channel steel.
The present invention can be used for the production of channel steel products of different specifications, can also be applied to the life of similar section profiled bar product
Production.
Any person skilled in the art can all repair without prejudice under the spirit and scope of invention to above-described embodiment
Decorations change.Therefore, such as those of ordinary skill in the art without departing from the spirit and technology disclosed in invention
All equivalent modifications completed under thought or change, should be covered by the claim invented.
Claims (7)
1. a kind of production system of channel steel, it is characterised in that：Including the feeding device, heater, hot rolling set gradually
Unit, roll bending unit and cut length measuring device；The Hot Rolling Mill is by for being thinned the first milling train of sotck thinkness and for plate face
The section thickness deployed that tiled with channel steel is provided with the second milling train composition of shaping, the roll of second milling train relative
The forming tank answered；First milling train and the second milling train are duo mill, and the first milling train is flat roll mill, second milling train
The first groove is provided with one roll, two the second grooves are provided with another roll, first groove and second recessed
Groove constitutes forming tank, and first groove is corresponding with the width of channel steel tiling expansion, the second groove and channel steel both sides
Kink correspondence with internal tooth；First milling train, close to being connected, is set with the second milling train on second milling train or roll bending unit
It is equipped with the rolling roll shape for rolling channel steel internal tooth.
2. a kind of production system of channel steel according to claim 1, it is characterised in that：The heater and first
Iron scale remove device is provided between milling train；Or between heater and the first milling train and the first milling train and the second milling train
Between be provided with iron scale remove device.
3. a kind of production system of channel steel according to claim 1, it is characterised in that：The heater is inductance
Heater is answered, described cut is additionally provided with cooling device and calibration devices after length measuring device.
4. a kind of production method of channel steel, it is characterised in that using a kind of groove described in claims 1 to 3 any one
The production system of road shaped steel, comprises the following steps：
S1, sorting, choose flat steel or steel billet is used as raw material；
S2, heating, temperature needed for raw material is heated into hot rolling；
S3, raw thickness are thinned, and are rolled in rolling unit, the thickness for expansion that ironed to the close channel steel of raw material is tiled
Degree；
S4, plate face shaping, the rolled piece obtained in step S3 are rolled into the shape of channel steel tiling expansion；
S5, hot bending, pass through multi-pass hot bending into channel steel by the rolled piece obtained in step S4；
S6, cutting are offline, and the channel steel after hot bending is cut into final required size through cutting length measuring device；
In the step S4, what channel steel tiling deployed is shaped as banding, and the both sides of banding are turned over downwards to form folding portion, turned over
There is internal tooth, the internal tooth is molded in step s 4 on the inside of folding part, or be molded in step S5 the first passage.
5. a kind of production method of channel steel according to claim 4, it is characterised in that：In the step S3, raw material
Reduction is 5%~50%.
6. a kind of production method of channel steel according to claim 4, it is characterised in that：By flat in the step S3
The section thickness deployed that tiled with channel steel is provided with roller mill rolling, the step S4 on the roll of milling train corresponding
Forming tank, the rolled piece is deformed simultaneously in step S3 and step S4 milling train, forms continuous rolling.
7. a kind of production method of channel steel according to claim 4, it is characterised in that：In the step S2 and step
The step of removing iron scale is additionally provided between S3；Or between the step S2 and step S3 and step S3 and step S4 it
Between be provided with removing iron scale the step of；Hot bending passage is more than or equal to 4 roads in the step S5.
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| CN105127692A (en) * | 2015-10-08 | 2015-12-09 | 罗光政 | Production method of semi-closed U-shaped metal groove with inner skid resistance tooth hooks |
| CN106270145A (en) * | 2016-08-05 | 2017-01-04 | 韩志刚 | A kind of hot bending shaped steel and former thereof and production technology |
| CN107685225A (en) * | 2017-09-04 | 2018-02-13 | 南通德瑞森复合材料有限公司 | A kind of preparation technology of accurate fluting fixture |
| CN108480415B (en) * | 2018-03-20 | 2020-03-24 | 中冶赛迪工程技术股份有限公司 | Online rolling thermoforming process for hot plate/belt and application of online rolling thermoforming process |
| CN109351820A (en) * | 2018-09-10 | 2019-02-19 | 中冶赛迪技术研究中心有限公司 | A kind of molded production method of hot-rolling of member openings to following formula |
| CN109261738A (en) * | 2018-11-16 | 2019-01-25 | 宏源精工车轮股份有限公司 | A kind of fashioned iron processing technology |
| CN109877159A (en) * | 2018-12-29 | 2019-06-14 | 东北大学无锡研究院 | A kind of apparatus and method for preparing conduit with bending group technology using rolling |
| CN109926461A (en) * | 2019-04-26 | 2019-06-25 | 宏源精工车轮股份有限公司 | A kind of deformed steel processing technology |
| CN111673395A (en) * | 2020-07-06 | 2020-09-18 | 新泰润泽金属制品有限公司 | Production process of dovetail connecting sleeve of tower crane |
| CN111633436B (en) * | 2020-07-08 | 2021-11-30 | 四川省富兴电力金具制造有限公司 | Automatic processing equipment and method for flat iron channel steel combination |
| CN112845734B (en) * | 2021-04-09 | 2022-08-19 | 马鞍山钢铁股份有限公司 | Online arching method for H-shaped steel |
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| JP3428503B2 (en) * | 1999-06-15 | 2003-07-22 | 住友金属工業株式会社 | Rolling method for channel steel |
| CN101433907B (en) * | 2008-07-09 | 2010-11-03 | 李灶明 | Technique for producing hot rolling hot forming T type channel steel with teeth |
| CN102247981B (en) * | 2011-06-01 | 2013-06-26 | 中冶赛迪工程技术股份有限公司 | Structural steel rolling production line and production process thereof |
| CN202985096U (en) * | 2012-10-25 | 2013-06-12 | 新疆万通人钢结构有限公司 | C-type steel production line |
| CN204524797U (en) * | 2015-03-23 | 2015-08-05 | 中冶赛迪工程技术股份有限公司 | A kind of production system of channel steel |
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