CN106734192A - High intensity small dimension hot-rolled reinforced bar production equipment and its production technology - Google Patents

High intensity small dimension hot-rolled reinforced bar production equipment and its production technology Download PDF

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Publication number
CN106734192A
CN106734192A CN201710028061.2A CN201710028061A CN106734192A CN 106734192 A CN106734192 A CN 106734192A CN 201710028061 A CN201710028061 A CN 201710028061A CN 106734192 A CN106734192 A CN 106734192A
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CN
China
Prior art keywords
rolled
reinforced bar
hot
small dimension
finishing mill
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Application number
CN201710028061.2A
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Chinese (zh)
Inventor
孙建国
蒲春雷
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Huatian Engineering and Technology Corp MCC
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Huatian Engineering and Technology Corp MCC
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Priority to CN201710028061.2A priority Critical patent/CN106734192A/en
Publication of CN106734192A publication Critical patent/CN106734192A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/16Metal-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
    • B21B1/163Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor

Abstract

The present invention discloses a kind of high intensity small dimension hot-rolled reinforced bar production technology, is designed mainly for production small dimension hot-rolled reinforced bar, comprises the following steps:Step (1):To by roughing, in roll after single intermediate product carry out the treatment of pre- finish rolling splitting rolling, obtain many rolled pieces;Step (2):Single line finish rolling treatment is carried out successively to many rolled pieces that step (1) is obtained, high-strength hot rolled reinforced bar is obtained using the production of fine grain method;The present invention is advanced to pre-finishing mill group by the way that finish rolling splitting rolling to be gone out the segmentation technique of finished product and carries out, and finished product is gone out using mm finishing mill unit one-strand roller, reaches and can both be produced in inexpensive mode that intensity is high, the good hot-rolled reinforced bar of plasticity and toughness, economizes on resources and reduce cost again.

Description

High intensity small dimension hot-rolled reinforced bar production equipment and its production technology
Technical field
The present invention relates to steel rolling field, more particularly to a kind of production equipment and process of high intensity small dimension hot-rolled reinforced bar.
Background technology
Hot-rolled reinforced bar is widely used in the civil engineering construction such as house, bridge, road, further with China's urbanization rate Improve, and raising of the architecture noumenon to shockproof anti-disaster ability demand, not only need to consume a large amount of hot-rolled reinforced bars, and to hot-rolled steel Muscle product mechanical property requirement more and more higher.
At present, the capital equipment and technique of production high intensity small dimension hot-rolled reinforced bar (6~22mm of nominal diameter Ф) pass through Two kinds of modes are realized below.
Mode (one):Would be heated to suitable temperature high temperature billet steel feeding be operated alone roughing, in roll and pre-finishing mill Group, is rolled into the intermediate product of a uniform section, then to roll into Ф 6~10mm high intensity small through the BLOCK mm finishing mill units of centralized driving Size hot-rolled reinforcing bar, spins into scattered round cloth and falls on cooling conveyor roller into high speed Laying head, and conveyor roller is by scattered round Hot-rolled reinforced bar delivers to collection volume station collection volume, is supplied with coiled state after tying up.The high intensity small dimension hot rolling that this kind of mode is produced Reinforcing bar is coiled, and after transport to building site, workmen needs to make after first carrying out uncoiling, aligning, disjunction shearing manipulation to it With.Even if unit in charge of construction has Special high-strength small dimension hot-rolled reinforced bar and coils uncoiling, aligning, disjunction shearing equipment, also reduce Engineering construction efficiency, increases engineering construction cost, while to engineering construction place space it is also proposed that high requirement.More have very Person, if small-sized unit in charge of construction fails to be equipped with special hot-rolled reinforced bar coiling uncoiling, aligning, disjunction shearing equipment, has to use manpower Or animal power is pulled, artificial cut-out causes personnel labor intensity big, and operating environment condition is arduous.
Mode (two):Roughing, intermediate mill that the high temperature billet steel feeding of suitable temperature is operated alone are would be heated to, is rolled into The intermediate product of one uniform section, the mm finishing mill unit that feeding is operated alone continues to roll.Mm finishing mill unit is equipped with suitable pass and leads System is defended, the single rolled piece for entering mm finishing mill unit is rolled into two or many Ф 10~22mm high intensity with cutting and rolling method Small dimension hot-rolled reinforced bar, is entered cold bed and cooled down, then supplied with vertical bar state through cutting to length and after tying up through Double Dimension Flying Shears segmentation. Although the high intensity small dimension hot-rolled reinforced bar that this kind of mode is produced can be supplied with vertical bar state, transport to building site is without applying Workman person it is carried out uncoiling, aligning and disjunction shearing manipulation, but mm finishing mill unit splitting rolling after directly go out finished product, this measure pair Operative's skill set requirements are high, and small dimension hot-rolled reinforced bar product size precision is difficult to ensure that.Simultaneously as finish rolling cutting hole The reason such as type distribution and irregular shape of rolling piece, it is difficult to using the fine grain method production high intensity small dimension hot-rolled steel of low cost Muscle, it has to sacrifice cost as cost, adds some trace alloying elements (such as Nb, V, Ti) in the composition of steel, utilizes Precipitation hardening mechanism and precipitated phase crystal grain thinning improve texture mechanism, to produce high intensity small dimension hot-rolled reinforced bar but aobvious Work increased resource consumption and production cost.
The content of the invention
Regarding to the issue above, the present invention provides a kind of high intensity small dimension heat that can reduce personnel's amount of labour and production cost Steel rolling muscle production technology.
To reach above-mentioned purpose, a kind of high intensity small dimension hot-rolled reinforced bar production technology of the invention comprises the following steps:
Step (1):To by roughing, in roll after single intermediate product carry out the treatment of pre- finish rolling splitting rolling, obtain many Root rolled piece;
Step (2):Single line finish rolling treatment is carried out successively to many rolled pieces that step (1) is obtained, is produced using fine grain method Obtain high-strength hot rolled reinforced bar.
Further, also including respectively to the rolled piece after roughing, in roll after rolled piece and the rolled piece after pre- finish rolling carry out Crop, back-end crop treatment.
Further, it is described also to include carrying out aligning cooling treatment to high-strength hot rolled reinforced bar, after then being cooled down to aligning High-strength hot rolled reinforced bar carry out the shear treatment of preliminary dimension, it is final to obtain high intensity small dimension hot-rolled reinforced bar.
It is of the invention compared with existing production technology, can Direct Rolling production and vertical bar the supply of material Ф 6~10mm high intensity it is small Size hot-rolled reinforcing bar, no longer needs to use uncoiling operation after transport to building site, directly reduces personnel's amount of labour, improves engineering and builds If efficiency, engineering construction cost is reduced;Simultaneously as the present invention shifts to an earlier date the segmentation technique that existing finish rolling splitting rolling goes out finished product Carried out to pre-finishing mill group, still go out finished product using mm finishing mill unit one-strand roller, therefore compared finish rolling splitting rolling and go out for finished product, essence The rolling of milling train group is more easy to control, ensure that high intensity small dimension hot-rolled reinforced bar product has more high dimensional accuracy, and available The technology production fine grain, high strength degree small dimension hot-rolled reinforced bar such as controlled rolling, control cooling and low temperature thermal mechanical rolling, saves money Source, reduces production cost.
To reach above-mentioned purpose, a kind of high intensity small dimension hot-rolled reinforced bar production equipment of the invention, including for rolled piece Carry out the pre-finishing mill group and the mm finishing mill unit for carrying out one-strand roller to rolled piece of cutting.
Further, the pre-finishing mill group is provided with guide and guards, the roll pass and rolled piece of the pre-finishing mill group It is adapted, the pre-finishing mill group includes some two rollers stiff mills and corresponded with each two rollers stiff mill Pre- finish rolling drive device, each horizontal single line arrangement of the two rollers stiff mill.
Further, the mm finishing mill unit includes 45 ° of cantilever collars BLOCK milling trains of some V-types and for driving each institute State 45 ° of finish rolling drive devices of cantilever collars BLOCK milling trains of V-type, 45 ° of cantilever collars multi-thread cloth of BLOCK milling trains of each V-type Put, single line high-speed no-twist rolling is carried out to rolled piece.
Further, the cooling device for controlling rolled piece temperature is provided with before and after the mm finishing mill unit.
Further, the entrance side of the intermediate mill, pre-finishing mill group and mm finishing mill unit is provided with for shearing rolled piece The first shear of cataclasm treatment is carried out end to end or to rolled piece.
Further, it is described also to include being used to that rolled piece to be cut into multiple lengths and be cut into the rolled piece of multiple lengths to determine Second shear of chi length.
Further, also including the cold bed device for multiple lengths rolled piece align cooling.
It is of the invention compared with existing high intensity small dimension hot-rolled reinforced bar production technology, can Direct Rolling production and vertical bar supply Goods Ф 6~10mm high intensity small dimension hot-rolled reinforced bars, no longer need to use uncoiling operation after transport to building site, directly reduce people Member's amount of labour, improves engineering construction efficiency, reduces engineering construction cost;Simultaneously as the present invention is by existing finish rolling splitting rolling The segmentation technique for going out finished product is advanced to pre-finishing mill group and carries out, and still goes out finished product using mm finishing mill unit one-strand roller, therefore compare finish rolling Splitting rolling goes out for finished product, and mm finishing mill unit rolling is more easy to control, ensure that high intensity small dimension hot-rolled reinforced bar product has More high dimensional accuracy, and using the technology production fine grain, high strength degree such as controlled rolling, control cooling and low temperature thermal mechanical rolling Small dimension hot-rolled reinforced bar, economizes on resources, and reduces production cost.
Brief description of the drawings
Fig. 1 is high intensity small dimension hot-rolled reinforced bar production equipment floor plan of the present invention.
Fig. 2 is high intensity small dimension hot-rolled reinforced bar production technological process of the present invention.
In Fig. 1:1-billet feeding stand;2-heating furnace;3-pinch roll;4-six frame roughing mills and 1#Flying shear; 5-six frame intermediate mills and 2#Flying shear;6-six frame pre-finishing mill groups;7—3#Flying shear and cataclasm cut;8-six frame BLOCK Mm finishing mill unit;9-large-size hot-rolled reinforcing bar water cooling plant;10-small dimension hot-rolled reinforced bar water cooling plant;11-finished product multiple length flies Cut preceding pinch roll;12-high speed Double Dimension Flying Shears;13-low speed Double Dimension Flying Shears;14-tail brake device;15-high speed charging gear; 16-stepping notch-bar cooling bed;17-fixed ruler cold shear;Chain is transferred in 18-finishing;19-short chi collection device;20-finished product collection is tied Stand.
Specific embodiment
With reference to Figure of description, the present invention will be further described.
Embodiment one
A kind of high intensity small dimension hot-rolled reinforced bar production method of the present invention, comprises the following steps:
Step (1):To by roughing, in roll after single intermediate product carry out the treatment of pre- finish rolling splitting rolling, obtain many Root rolled piece;
Step (2):Single line finish rolling treatment is carried out successively to many rolled pieces that step (1) is obtained, is produced using fine grain method Obtain high-strength hot rolled reinforced bar.
In conjunction with the embodiments one, a kind of high intensity small dimension hot-rolled reinforced bar production method of the invention also include respectively to roughing after Rolled piece, in roll after rolled piece and the rolled piece after pre- finish rolling carry out crop, back-end crop treatment.
It is described also to include carrying out aligning cooling treatment to high-strength hot rolled reinforced bar with reference to above-described embodiment, then to aligning High-strength hot rolled reinforced bar after cooling carries out the shear treatment of preliminary dimension, final to obtain high intensity small dimension hot-rolled reinforced bar.
A kind of high intensity small dimension hot-rolled reinforced bar production method of the present invention, both can with inexpensive mode produce intensity it is high, The good hot-rolled reinforced bar of plasticity and toughness, can reduce resource consumption and personnel's amount of labour again, have important practical significance and be worth.
Embodiment two
A kind of high intensity small dimension hot-rolled reinforced bar production equipment of the present invention, including roughing mills, the middle milling train for setting gradually Group, pre-finishing mill group and mm finishing mill unit for carrying out one-strand roller to rolled piece for carrying out cutting to rolled piece, it is described in The output end of milling train group is connected by guide groove with the input of the pre-finishing mill group, and the output end of the pre-finishing mill group passes through Guide groove or conduit are connected with the input of the mm finishing mill unit, the mm finishing mill unit two-wire arrangement, are set before and after the mm finishing mill unit It is equipped with the cooling device for controlling rolled piece temperature.
As shown in figure 1, billet feeding stand receives the steel billet that crane handling in a row comes, and it is transferred into furnace roller by root Road, steel billet is weighed on furnace roller road is entered, survey it is long after, into heating stove heat, roughing mills are sent to by furnace delivery table and are rolled.Slightly Pinch roll is set before milling train group, and supplementary mill nips steel billet.
Full rolling line sets 30 rolling mills, be divided into roughing, in roll, pre- finish rolling and BLOCK mm finishing mill units, roughing mills, in roll Unit, pre-finishing mill group are respectively made up of the roller stiff mill of 6 frame two, roughing, intermediate mill milling train horizontally and vertically alternative single line arrangement, in advance The horizontal single line arrangement of mm finishing mill unit milling train, is respectively operated alone per rolling mill by a motor, and BLOCK mm finishing mill units are 6 frame V-type weights 45 ° of overhang roll looping mills are carried, by a motor centralized driving, two-wire arrangement.
Steel billet roughing, in roll, pre- finish rolling, in BLOCK mm finishing mill units through multi- pass rolling, size hot-rolled steel needed for rolling into Muscle product.
Control cooling water tank is set before and after BLOCK mm finishing mill units, by control to enter BLOCK mm finishing mill unit rolled pieces temperature, Rolled piece cooling velocity after BLOCK mm finishing mill unit rolling mill screwdown amounts and finish rolling, high intensity is produced using the fine grain method of low cost Small dimension hot-rolled reinforced bar.
Milling train and accident treatment are smoothly nipped for ease of rolled piece, rolled in, pre- finish rolling, respectively set one before BLOCK mm finishing mill units It is cataclasm that platform Starting-stop flying shears carry out crop, back-end crop or accident to rolled piece.
From the high intensity small dimension hot-rolled reinforced bar that BLOCK mm finishing mill units shut out, through product flying shear nibbling shear at double Chi length, tail brake device folder tail slows down before delivering to cold bed through guide groove, is thrown into stepping notch-bar cooling bed by cooling bed steel-feeding device and enters Row aligning cooling.
Hot-rolled reinforced bar on the cold bed cooling and it is flush through elevating alignment roll table after, by be arranged on the unloading steel plant of cold bed outlet side into Disposing is on cold bed runout table, then delivers to fixed cold shears through cold bed runout table and be cut into cut lengths, cuts rear hot-rolled steel Muscle is by conveyor roller and lifts machine for moving steel and is sent to finishing transfer chain, through artificial visual inspection, tie up, weigh, after label, by roller-way Collection bundle stand collection bundle is sent to, finally storage is put in storage with crane handling.
A kind of high intensity small dimension hot-rolled reinforced bar production equipment of the present invention, both can with inexpensive mode produce intensity it is high, The good hot-rolled reinforced bar of plasticity and toughness, can reduce resource consumption and personnel's amount of labour again, have important practical significance and be worth.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any to be familiar with sheet Those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered Within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should be defined by claim is defined.

Claims (10)

1. a kind of high intensity small dimension hot-rolled reinforced bar production technology, it is characterised in that comprise the following steps:
Step (1):To by roughing, in roll after single intermediate product carry out the treatment of pre- finish rolling splitting rolling, obtain many and roll Part;
Step (2):Single line finish rolling treatment is carried out successively to many rolled pieces that step (1) is obtained, is produced using fine grain method and obtained High-strength hot rolled reinforced bar.
2. high intensity small dimension hot-rolled reinforced bar production technology according to claim 1, it is characterised in that also including right respectively Rolled piece after roughing, in roll after rolled piece and the rolled piece after pre- finish rolling carry out crop, back-end crop treatment.
3. high intensity small dimension hot-rolled reinforced bar production technology according to claim 1, it is characterised in that it is described also include it is right High-strength hot rolled reinforced bar carries out aligning cooling treatment, then carries out preliminary dimension to the high-strength hot rolled reinforced bar after aligning cooling Shear treatment, it is final to obtain high intensity small dimension hot-rolled reinforced bar.
4. a kind of high intensity small dimension hot-rolled reinforced bar production equipment, it is characterised in that including for carrying out the pre- of cutting to rolled piece Mm finishing mill unit and the mm finishing mill unit for carrying out one-strand roller to rolled piece.
5. high intensity small dimension hot-rolled reinforced bar production equipment according to claim 4, it is characterised in that the pre-finishing mill Group is provided with guide and guards, and the roll pass of the pre-finishing mill group is adapted with rolled piece, and the pre-finishing mill group includes some Two roller stiff mills and with the one-to-one pre- finish rolling drive device of each two rollers stiff mill, each two roller is high The horizontal single line arrangement of rigidity rolling mill.
6. high intensity small dimension hot-rolled reinforced bar production equipment according to claim 4, it is characterised in that the mm finishing mill unit Including 45 ° of cantilever collars BLOCK milling trains of some V-types and for driving 45 ° of essences of cantilever collars BLOCK milling trains of each V-type Drive device is rolled, 45 ° of cantilever collars multi-thread arrangements of BLOCK milling trains of each V-type carry out single line high-speed no-twist rolling to rolled piece.
7. high intensity small dimension hot-rolled reinforced bar production equipment according to claim 4, it is characterised in that the mm finishing mill unit The front and rear cooling device being provided with for controlling rolled piece temperature.
8. high intensity small dimension hot-rolled reinforced bar production equipment according to claim 4, it is characterised in that the middle milling train The entrance side of group, pre-finishing mill group and mm finishing mill unit is provided with for shearing rolled piece end to end or carrying out the of cataclasm treatment to rolled piece One shear.
9. high intensity small dimension hot-rolled reinforced bar production equipment according to claim 4, it is characterised in that described also to include using In rolled piece being cut into multiple lengths and the rolled piece of multiple lengths is cut into the second shear of cut lengths.
10. high intensity small dimension hot-rolled reinforced bar production equipment according to claim 4, it is characterised in that also including being used for To multiple lengths rolled piece align the cold bed device of cooling.
CN201710028061.2A 2017-01-13 2017-01-13 High intensity small dimension hot-rolled reinforced bar production equipment and its production technology Pending CN106734192A (en)

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CN201710028061.2A CN106734192A (en) 2017-01-13 2017-01-13 High intensity small dimension hot-rolled reinforced bar production equipment and its production technology

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN110170523A (en) * 2019-05-20 2019-08-27 北京科技大学 A kind of low energy consumption controlled rolling method of hot rolled ribbed bars
CN110695083A (en) * 2019-10-22 2020-01-17 中冶南方武汉钢铁设计研究院有限公司 Production equipment for non-heating high-strength steel
CN111167856A (en) * 2020-02-10 2020-05-19 南京先河工程技术股份有限公司 Double-high-rod production equipment and process
CN112692054A (en) * 2020-11-18 2021-04-23 江苏省镔鑫钢铁集团有限公司 Bar steel rolling and splitting process capable of reducing raw material cost

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110170523A (en) * 2019-05-20 2019-08-27 北京科技大学 A kind of low energy consumption controlled rolling method of hot rolled ribbed bars
CN110695083A (en) * 2019-10-22 2020-01-17 中冶南方武汉钢铁设计研究院有限公司 Production equipment for non-heating high-strength steel
CN111167856A (en) * 2020-02-10 2020-05-19 南京先河工程技术股份有限公司 Double-high-rod production equipment and process
CN112692054A (en) * 2020-11-18 2021-04-23 江苏省镔鑫钢铁集团有限公司 Bar steel rolling and splitting process capable of reducing raw material cost

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