CN105414185A - Continuous casting and rolling production line of wire rods and production method of production line - Google Patents
Continuous casting and rolling production line of wire rods and production method of production line Download PDFInfo
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- CN105414185A CN105414185A CN201610011589.4A CN201610011589A CN105414185A CN 105414185 A CN105414185 A CN 105414185A CN 201610011589 A CN201610011589 A CN 201610011589A CN 105414185 A CN105414185 A CN 105414185A
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- continuous casting
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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
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a continuous casting and rolling production line of wire rods and a production method of the production line. The continuous casting and rolling production line of the wire rods comprises a continuous casting machine, a parallel-flow device and a rolling mill unit. The method comprises the steps that a square casting blank or a circular casting blank is produced by means of the continuous casting machine firstly, the produced square casting blank or circular blank is cut through a cutting machine, parallel flowing is conducted through the parallel-flow device, the parallel flowed square casting blank bodies or circular casting blank bodies are conveyed to an inlet of the rolling mill unit through a conveyor roller way finally, and the rods are prepared by rolling through a rough mill, an intermediate mill and a finishing mill in sequence. According to the continuous casting and rolling production line of the wire rods and the production method of the production line, seamless connection of the continuous casting machine and rolling mills is achieved, the casting blank can be directly hot-delivered into the rolling mill unit to be rolled into the rods, secondary heating through a heating furnace is not needed, and the continuous casting and rolling production line of the wire rods and the production method of the production line have the advantages of being high in pouring speed, small in casting machine flow number, compact in production rhythm, high in efficiency, less in energy consumption and low in construction investment and operation maintenance cost.
Description
Technical field
The invention belongs to field of steel metallurgy, be specifically related to a kind of wire and rod continuous casting and rolling production line and production method thereof.
Background technology
Wire and rod is one of steel be most widely used in engineering construction, conventional production method adopts multiple-strand caster to produce small billet or roundlet base, send roller-way to deliver to heating furnace by heat after being cut by strand, heating furnace is delivered to milling train after being heated by strand and is rolled.Concrete technology flow process is as follows: large bag → tundish → crystallizer → secondary cooling zone → withdrawal straightening machine → cutting machine → conveyor roller → machine for moving steel → point steel machine → heat send roller-way → heating furnace stand → heating furnace → milling train.Wherein, multithread strand need be transferred on point steel machine frame by machine for moving steel in batches, then send on roller-way by dividing a steel machine to be placed into heat by root, send roller transport to heat to heating furnace, deliver to mill and be rolled after heating by heat.
There is more problem and shortage in this production method: 1) conticaster pulling rate is low, output is few, fluxion is more, maximum pulling rate 2.5 ~ 3.5m/min, and the maximum annual production of single current 20 ~ 250,000 tons, is generally 4 and flow to 8 streams; 2) after multithread casting blank collecting, order delivers to that mill flow process is complicated, the time is long; 3) conveyor roller operating rate is not high, is generally 0 ~ 60m/min; 4) Casting speed is low, production procedure is long, temperature loss is high, can not ensure that casting blank surface temperature is greater than 900 DEG C when direct heat delivers to inlet of rolling mill.
Therefore, there is the shortcomings such as workflow is not compact, production efficiency is low, energy resource consumption is high, less economical in existing method for producing wire and bar materials, especially the restriction of conticaster casting speed and the technological process of production is subject to, strand produced and transports that process duration is longer, temperature loss is too high, needing to set up strand heating furnace and could meet the rolling requirements that inlet of rolling mill casting blank surface temperature is greater than 900 DEG C.
Summary of the invention
In view of this, the object of the present invention is to provide the wire and rod continuous casting and rolling production line that a kind of workflow is compact, energy resource consumption is low, production efficiency is improved and production method thereof.
For achieving the above object, the invention provides following technical scheme: a kind of wire and rod continuous casting and rolling production line, comprise conticaster and flow device and milling train unit, described conticaster forms primarily of the panoramic table set gradually, great Bao, tundish, crystallizer, secondary cooling zone, withdrawal straightening machine, cutting machine and conveyor roller, described rolling unit forms primarily of the roughing mill set gradually along conveyor roller, middle milling train and finishing mill, described roughing mill and middle milling train, correspondingly between middle milling train with finishing mill be provided with flying shear, described and flow device and be arranged between cutting machine and roughing mill.
Further, described conticaster is double fluid or three strand casting machine.
Further, described and flow device and be and flow roller-way or machine for moving steel or steel-drawing machine.
Further, described withdrawal straightening machine and/or conveyor roller are provided with attemperator and/or area heating installation.
Further, described secondary cooling zone and withdrawal straightening machine place are provided with some groups of casting metal guiding devices.
The present invention also discloses a kind of production method being applicable to above-mentioned production line, mainly comprises the following steps:
1) conticaster is utilized to produce square strand or circular strand;
2) the square strand produced or circular strand cut off through cutting machine, pass through and flow device and flow afterwards;
3) conveyor roller by and stream square strand or circular strand be delivered to rolling unit porch, after be rolled into bar through roughing mill, middle milling train and finishing mill successively.
Further, step 1) described in conticaster be double fluid or three strand casting machine, casting rate is 0 ~ 8m/min; Square strand is square sectional, and the cross section length of side is 90 ~ 250mm, and the diameter of section of circular strand is 90 ~ 250mm.
Further, the tapering in described crystallizer is 0.4% ~ 1%/m, and cooling water speed is 8 ~ 20m/s, and bottom has 2 ~ 6 to sufficient roller.
Further, described secondary cooling zone adopts cold by force, and specific water is 1.5 ~ 5L/Kg.
Further, step 3) described in the surface temperature control of strand when entering rolling unit inlet more than 900 DEG C.
Further, step 3) described in conveyor roller be high speed roller-way, the speed of service is 0 ~ 120m/min.
Beneficial effect of the present invention is: the present invention passes through and flow device achieve the quick, efficient of double fluid or three stream strands and flow, reduce the Operating Complexity of technique, decrease and flow the time, thus achieve the seamless link of conticaster and milling train, strand is made directly heat to send rolling in rolling unit to and become a useful person, reduce time of delivery and the temperature loss of strand, and carry out post bake without the need to heating furnace; Casting billet surface is even to center temperature gradient distribution, be beneficial to the quality control of mill milling process, overall flow achieves wire and rod continuous casting and rolling that is compact, efficient, short route and produces, have the advantages that poring rate is high, numbers of caster stands is few, rhythm of production is compact, efficiency is high, energy resource consumption is few, significantly reduce construction cost and the operation maintenance cost of wire and rod continuous casting and rolling production line, there is good economic benefit.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is elevational schematic view of the present invention;
Fig. 2 is floor map of the present invention (producing double-current wire and rod);
Fig. 3 is floor map of the present invention (producing three streamline bars).
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in the figure, wire and rod continuous casting and rolling production line in the present invention, comprise conticaster, and flow device 8 and milling train unit, described conticaster is primarily of the panoramic table 1 set gradually, large bag 2, tundish 3, crystallizer 4, secondary cooling zone 5, withdrawal straightening machine 6, cutting machine 7 and conveyor roller 9 form, described rolling unit is primarily of the roughing mill 10 set gradually along conveyor roller 9, middle milling train 12 forms with finishing mill 14, 1# flying shear 11 is provided with between described roughing mill 10 and middle milling train 12, 2# flying shear 13 is provided with between middle milling train 12 and finishing mill 14, described and flow device 8 and be arranged between cutting machine 7 and roughing mill 10.
Concrete, conticaster adopts high pulling rate to produce little square strand or small circular strand, little square strand or small circular strand are after cutting machine 7 cuts off, by and flow device 8 rapidly and efficiently and flow, directly be transported to milling train unit inlet through rapid transit roller-way 9, after roughing mill 10,1# flying shear 11, middle milling train 12,2# flying shear 13 and finishing mill 14, be rolled into wire and rod successively.Herein and to flow device 8 effect be that the strand on multiple-strand caster is merged into single current, shorten the time that multithread strand is transported to rolling unit place, and flow device 8 and can adopt and flow the forms such as roller-way, machine for moving steel or steel-drawing machine.
The little strand produced of conticaster height pulling rate through and flow device 8 and directly enter rolling unit after stream, production procedure is short, temperature loss is few, without the need to heating furnace post bake, casting billet surface is even to center temperature gradient distribution, not only be beneficial to the quality control in mill milling process, more easily produce superior in quality wire and rod, also reduce the construction investment of equipment and later operation maintenance expense.
As the further improvement of such scheme, described conticaster is double fluid or three strand casting machine, rolling unit need be delivered to for follow-up by after double fluid or three stream strand interflow, wire and rod continuous casting and rolling that is compact, efficient, short route can be realized produce, significantly reduce construction cost and the operation maintenance cost of wire and rod continuous casting and rolling production line, good in economic efficiency.
As the further improvement of such scheme, described withdrawal straightening machine 6 and/or conveyor roller 9 are provided with attemperator and/or area heating installation, can reduce strand temperature further and scatter and disappear, thus improve cogging temperature.
As the further improvement of such scheme, described secondary cooling zone 5 is provided with some groups of casting metal guiding devices with withdrawal straightening machine 6 place, and strand centering can be made to cool evenly.
The present invention also discloses a kind of production method being applicable to above-mentioned production line, mainly comprises the following steps:
1) conticaster is utilized to produce little square strand or small circular strand;
2) the square strand produced or circular strand cut off through cutting machine 7, pass through and flow device 8 and flow afterwards, flow the quick, efficient of strands and flow, thus reducing the Operating Complexity of technique, reduce and flow the time, reducing temperature loss to realize double fluid or three;
3) conveyor roller by and stream square strand or circular strand be delivered to rolling unit porch, after be rolled into bar through roughing mill, middle milling train and finishing mill successively.
Concrete, step 1) described in conticaster be double-current or three strand casting machine, casting rate is 0 ~ 8m/min; Square strand is square sectional, and the cross section length of side is 90 ~ 250mm, and the diameter of section of circular strand is 90 ~ 250mm; Improve the poring rate of strand, reduce casting machine production flow velocity, rolling unit need be delivered to by after double fluid or three stream strand interflow for follow-up, without the need to the post bake of heating furnace, wire and rod continuous casting and rolling that is compact, efficient, short route can be realized and produce.
Step 3) described in conveyor roller 9 be high speed roller-way, the speed of service is 0 ~ 120m/min; The strand after cut-out can be enable to be transported to rolling unit inlet fast, to reduce time of delivery and the temperature loss of strand.Surface temperature control when strand enters rolling unit inlet is more than 900 DEG C; There is provided basis for mill milling and ensure, being beneficial to and producing superior in quality wire and rod.
For meeting high pulling rate requirement, the tapering in described crystallizer 4 is 0.4% ~ 1%/m, and cooling water speed is 8 ~ 20m/s, and bottom has 2 ~ 6 to sufficient roller.
As the further improvement of such scheme, described secondary cooling zone 5 adopts cold by force, and specific water is 1.5 ~ 5L/Kg; Make casting blank solidification terminal close to off-position, make cut-out strand obtain higher temperature.
Produce double-current wire and rod embodiment
1) continuous casting of two strands in parallel machine is utilized to produce little square strand or small circular strand; Casting rate is 3.5 ~ 7m/min; Square strand is square sectional, and the cross section length of side is 150 ~ 230mm, and the diameter of section of circular strand is 150 ~ 230mm.
2) the square strand produced or circular strand cut off through cutting machine, pass through and flow device and flow afterwards.
3) conveyor roller by and stream square strand or circular strand be delivered to rolling unit porch, after be rolled into bar through roughing mill, middle milling train and finishing mill successively; Conveyor roller is high speed roller-way, and the speed of service is 60 ~ 110m/min; Surface temperature control when strand enters rolling unit inlet is at 1000 ± 50 DEG C.
In the present embodiment, the tapering in described crystallizer is 0.5% ~ 0.9%/m, and cooling water speed is 10 ~ 15m/s, and bottom has 4 to sufficient roller.
In the present embodiment, described secondary cooling zone adopts cold by force, and specific water is 2.5 ~ 4L/Kg.
Produce three streamline bar embodiments
1) three strand casting machine are utilized to produce little square strand or circular strand; Casting rate is 2 ~ 6m/min; Square strand is square sectional, and the cross section length of side is 120 ~ 200mm, and the diameter of section of circular strand is 120 ~ 200mm.
2) the square strand produced or circular strand cut off through cutting machine, pass through and flow device and flow afterwards.
3) conveyor roller by and stream square strand or circular strand be delivered to rolling unit porch, after be rolled into bar through roughing mill, middle milling train and finishing mill successively; Conveyor roller is high speed roller-way, and the speed of service is 30 ~ 100m/min; Surface temperature control when strand enters rolling unit inlet is at 950 ± 50 DEG C.
In the present embodiment, the tapering in described crystallizer is 0.6% ~ 0.8%/m, and cooling water speed is 12 ~ 18m/s, and bottom has 5 to sufficient roller.
In the present embodiment, described secondary cooling zone adopts cold by force, and specific water is 3 ~ 4.5L/Kg.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (11)
1. a wire and rod continuous casting and rolling production line, it is characterized in that: comprise conticaster and flow device and milling train unit, described conticaster forms primarily of the panoramic table set gradually, great Bao, tundish, crystallizer, secondary cooling zone, withdrawal straightening machine, cutting machine and conveyor roller, described rolling unit forms primarily of the roughing mill set gradually along conveyor roller, middle milling train and finishing mill, described roughing mill and middle milling train, correspondingly between middle milling train with finishing mill be provided with flying shear, described and flow device and be arranged between cutting machine and roughing mill.
2. wire and rod continuous casting and rolling production line according to claim 1, is characterized in that: described conticaster is double fluid or three strand casting machine.
3. wire and rod continuous casting and rolling production line according to claim 2, is characterized in that: described and flow device and be and flow roller-way or machine for moving steel or steel-drawing machine.
4. wire and rod continuous casting and rolling production line according to claim 1 and 2, is characterized in that: described withdrawal straightening machine and/or conveyor roller are provided with attemperator and/or area heating installation.
5. wire and rod continuous casting and rolling production line according to claim 4, is characterized in that: described secondary cooling zone and withdrawal straightening machine place are provided with some groups of casting metal guiding devices.
6. be applicable to a production method for production line described in claim 5, it is characterized in that mainly comprising the following steps:
1) conticaster is utilized to produce square strand or circular strand;
2) the square strand produced or circular strand cut off through cutting machine, pass through and flow device and flow afterwards;
3) conveyor roller by and stream square strand or circular strand be delivered to rolling unit porch, after be rolled into bar through roughing mill, middle milling train and finishing mill successively.
7. wire and rod continuous casting and tandem rolling production method according to claim 6, is characterized in that: step 1) described in conticaster for double fluid or three strand casting machine, casting rate is 0 ~ 8m/min; Square strand is square sectional, and the cross section length of side is 90 ~ 250mm, and the diameter of section of circular strand is 90 ~ 250mm.
8. wire and rod continuous casting and tandem rolling production method according to claim 6, is characterized in that: the tapering in described crystallizer is 0.4% ~ 1%/m, and cooling water speed is 8 ~ 20m/s, and bottom has 2 ~ 6 to sufficient roller.
9. wire and rod continuous casting and tandem rolling production method according to claim 8, is characterized in that: described secondary cooling zone adopts cold by force, and specific water is 1.5 ~ 5L/Kg.
10. wire and rod continuous casting and tandem rolling production method according to claim 8 or claim 9, is characterized in that: step 3) described in the surface temperature control of strand when entering rolling unit inlet more than 900 DEG C.
11. wire and rod continuous casting and tandem rolling production methods according to claim 10, is characterized in that: step 3) described in conveyor roller be high speed roller-way, the speed of service is 0 ~ 120m/min.
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| CN201610011589.4A CN105414185A (en) | 2016-01-08 | 2016-01-08 | Continuous casting and rolling production line of wire rods and production method of production line |
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| CN201610011589.4A CN105414185A (en) | 2016-01-08 | 2016-01-08 | Continuous casting and rolling production line of wire rods and production method of production line |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180192A (en) * | 2016-08-31 | 2016-12-07 | 中冶赛迪工程技术股份有限公司 | A kind of wire and rod continuous casting billet high speed direct sending directly rolls system and method |
| CN106734202A (en) * | 2016-12-27 | 2017-05-31 | 中冶连铸技术工程有限责任公司 | Bar Wire Product and arrowband rolling line and its production method |
| CN106981740A (en) * | 2017-02-08 | 2017-07-25 | 深圳市天创原精密电子有限公司 | A kind of connector pin and its production technology |
| CN107671120A (en) * | 2017-09-29 | 2018-02-09 | 四川德胜集团钒钛有限公司 | A kind of continuous casting and rolling production line |
| CN110039019A (en) * | 2019-04-18 | 2019-07-23 | 河南科技大学 | A kind of multi-channel parallel casting-rolling method, casting system and casting melt feeding device |
| 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 |
| CN110102729A (en) * | 2019-05-24 | 2019-08-09 | 山东钢铁股份有限公司 | A kind of quick hot sending device and hot sending method of continuous casting high alloy die steel round billet |
| 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 |
| CN115026130A (en) * | 2022-07-15 | 2022-09-09 | 宁夏钢铁(集团)有限责任公司 | Green low-energy-consumption rolling process for high-speed bar |
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| CN106180192A (en) * | 2016-08-31 | 2016-12-07 | 中冶赛迪工程技术股份有限公司 | A kind of wire and rod continuous casting billet high speed direct sending directly rolls system and method |
| CN106734202A (en) * | 2016-12-27 | 2017-05-31 | 中冶连铸技术工程有限责任公司 | Bar Wire Product and arrowband rolling line and its production method |
| CN106981740A (en) * | 2017-02-08 | 2017-07-25 | 深圳市天创原精密电子有限公司 | A kind of connector pin and its production technology |
| CN107671120A (en) * | 2017-09-29 | 2018-02-09 | 四川德胜集团钒钛有限公司 | A kind of continuous casting and rolling production line |
| CN110039019A (en) * | 2019-04-18 | 2019-07-23 | 河南科技大学 | A kind of multi-channel parallel casting-rolling method, casting system and casting melt feeding device |
| 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 |
| CN110102729A (en) * | 2019-05-24 | 2019-08-09 | 山东钢铁股份有限公司 | A kind of quick hot sending device and hot sending method of continuous casting high alloy die steel round billet |
| 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 |
| CN115026130A (en) * | 2022-07-15 | 2022-09-09 | 宁夏钢铁(集团)有限责任公司 | Green low-energy-consumption rolling process for high-speed bar |
| CN115026130B (en) * | 2022-07-15 | 2024-05-28 | 宁夏钢铁(集团)有限责任公司 | Green low-energy-consumption rolling process for high-speed bar |
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