CN103826764A - Hot rolling facility - Google Patents
Hot rolling facility Download PDFInfo
- Publication number
- CN103826764A CN103826764A CN201180073678.7A CN201180073678A CN103826764A CN 103826764 A CN103826764 A CN 103826764A CN 201180073678 A CN201180073678 A CN 201180073678A CN 103826764 A CN103826764 A CN 103826764A
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- CN
- China
- Prior art keywords
- rolling
- rolling line
- line
- slab
- milling train
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- 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
- B21B1/463—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 continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/004—Transverse moving
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
In order to provide a hot rolling facility with which an improvement in the manufacturability and the quality of a thin plate material can be achieved with little facility investment, this hot rolling facility is equipped with a first rolling line (A), which directly performs finishing rolling with multiple rolling mills (12) on a thin slab (Wa) cast with a continuous-casting machine (10), and a second rolling line (B), which is arranged parallel to the first rolling line (A) and, with a roughing mill (21), reversibly rolls a thick slab (Wb) heated in a batch-type heating furnace (20) , with an intermediate material (Wc) that has been rolled with the second rolling line (B) being transported to the first rolling line (A) and undergoing finishing rolling at the first rolling line (A) to produce a final product (S). A crop shear device (30) that cuts and evens up the front and rear ends of the intermediate material (Wc) rolled with the roughing mill (21) is installed in the second rolling line (B).
Description
Technical field
The present invention relates to a kind of equipment of hot rolling that can realize the productivity ratio of light sheet and the raising of quality with few equipment investment.
Background technology
In the past, a kind of equipment of hot rolling is for example disclosed in patent documentation 1, it possesses the first rolling line and the second rolling line, this first rolling line utilizes many milling trains directly to carry out finish rolling to the sheet billet being cast out by continuous casting machine, this second rolling line and described the first rolling line configure abreast, and utilize roughing mill to being rolled by the heavy slab after batch formula heating furnace heating, this equipment of hot rolling will be transferred to the first rolling line by the middle blank after described the second rolling line rolling, thereby by this first rolling line finish rolling to final products.
Thus, by transfer the slab of various slab thicknesses from second Rolling Production alignment the first rolling line, thereby can realize effectively utilizing to greatest extent of rearmounted part in the first rolling line (soaking pit, many milling trains, up-coiler etc.), can realize with few equipment investment the raising of the productivity ratio of light sheet.In addition, in the second rolling line, utilize roughing mill heavy slab to be rolling to the slab thickness that can carry out finish rolling in the first rolling line, therefore can obtain the light sheet corresponding to the high-quality of demand.
[formerly technical literature]
[patent documentation]
No. 4001617 communique of [patent documentation 1] Japan Patent
[summary of invention]
[problem that invention will solve]
But, in the disclosed equipment of hot rolling of patent documentation 1, in the time utilizing roughing mill to carry out reversible rolling to heavy slab in the second rolling line, the front and back end temperature of middle blank reduces, and there is problem points as follows: the front and back end at middle blank produces the shape defects such as fish tail or tang, lack the stability in final rolling or the coiling in the first rolling line, and damage quality.
In addition, the rolling of the heavy slab in the second rolling line is due to the material after being heated by batch formula heating furnace is rolled, therefore from coming out of the stove till the time of roughing according to the lengthwise location of material and difference, and in the length direction temperature of the middle blank of transferring to the first rolling line, also produce difference, therefore have the stability, the such problem points of final products quality that damage the rolling in the first rolling line.
Summary of the invention
The present invention proposes in view of such actual conditions, and its object is to provide a kind of equipment of hot rolling that can realize with few equipment investment the productivity ratio of light sheet and the raising of quality.
[solution]
Possess the first rolling line and the second rolling line for the equipment of hot rolling of the present invention that solves above-mentioned problem, described the first rolling line utilizes many milling trains directly to carry out finish rolling to the slab being cast out by continuous casting machine, described the second rolling line and described the first rolling line configure abreast, and utilize roughing mill to being rolled by the slab after batch formula heating furnace heating, described equipment of hot rolling will be transferred to the first rolling line by the middle blank after described the second rolling line rolling, thereby by this first rolling line finish rolling to final products, described equipment of hot rolling is characterised in that, on described the second rolling line, be provided with stub bar shear, this stub bar shear trims the front and back end of the middle blank after being rolled by described roughing mill.
In addition, described equipment of hot rolling is characterised in that, many milling trains in described the first rolling line are made up of upstream side milling train and downstream milling train, this upstream side milling train and downstream milling train are made up of the milling train of at least one support respectively, on the middle workbench between these upstream side milling trains and downstream milling train, be provided with material temperature adjusting device, this material temperature adjusting device regulates the temperature of the slab by after described upstream side mill milling.
[invention effect]
According to equipment of hot rolling of the present invention, can realize the effectively utilization to greatest extent of the rearmounted part at the continuous casting machine rear in the first rolling line, can realize with few equipment investment the raising of the productivity ratio of light sheet, and in the second rolling line, can utilize roughing mill heavy slab to be rolling to the slab thickness that can carry out finish rolling in the first rolling line, therefore can obtain the light sheet corresponding to the high-quality of demand, on the other hand, by the stub bar shear that the front and back end of the middle blank by after roughing mill rolling is trimmed is set on the second rolling line, thus can be by the front and back end shape defect of the middle blank by after the second rolling line rolling, temperature reduces part and cuts off before transferring to the first rolling line, can guarantee the stability in final rolling or the coiling in the first rolling line, thereby can prevent from damaging the situation of quality or productivity ratio.
In addition, many milling trains in described the first rolling line are made up of upstream side milling train and downstream milling train, this upstream side milling train and downstream milling train are at least made up of the milling train of a support respectively, middle workbench between these upstream side milling trains and downstream milling train is provided with the material temperature adjusting device that the temperature of the slab by after upstream side mill milling is regulated, therefore, in the first rolling line, can make the temperature difference of length direction of the middle blank of being produced by the second rolling line more even by material temperature adjusting device, can implement the rolling under more uniform temperature, can guarantee the stability of the final rolling in the first rolling line, can prevent from damaging the situation of quality or productivity ratio.
Accompanying drawing explanation
Fig. 1 is the brief configuration side view that represents the equipment of hot rolling of embodiments of the invention 1.
Fig. 2 is the brief configuration side view that represents the equipment of hot rolling of embodiments of the invention 2.
The specific embodiment
Below, by embodiment, and use accompanying drawing, explain equipment of hot rolling of the present invention.
[embodiment 1]
Fig. 1 is the brief configuration side view that represents the equipment of hot rolling of embodiments of the invention 1.
As shown in Figure 1, by molten steel never illustrated ladle inject to tundish, and inject to continuous casting machine 10 from tundish.In this continuous casting machine 10, solidification of molten steel and become the sheet billet Wa (for example about 70～100mm) of high temperature.This sheet billet Wa advances to soaking pit (conticaster output wing furnace) 11, declines in the temperature of the interior inhibition sheet billet of soaking pit 11 Wa, and, realize the homogenising of the Temperature Distribution in sheet billet Wa.In addition, be provided with in the time that slab becomes desired length the not shown cutting machine of its cut-out at the outlet side of continuous casting machine 10.
From described soaking pit 11 sheet billet Wa out by many (in illustrated example, being 6 (6 supports)) milling train (row) 12 carries out finish rolling and is rolled into the band steel S (for example 1mm～about 10mm) of desired thickness, alternately reels via not shown cooling device and by the underground up-coiler 13 that disposes many (being 2 in illustrated example) afterwards.Form the first rolling line A by described continuous casting machine 10, soaking pit 11, many milling trains (row) 12 and underground up-coiler 13 etc.It should be noted that, also can replace up-coiler 13 under described many tablelands and use rotating disk up-coiler.
And, configure abreast the second rolling line B with described the first rolling line A.This second rolling line B by roughing mill 21 by the heavy slab Wb after being heated by batch formula heating furnace 20 such as walking beam furnace (for example 200～250mm left and right) reversible ground roughing become desired thickness (for example, with described the first rolling line A in the thickness of sheet billet Wa with the thickness of degree).
Transfer (lateral transfer) by carrying stove (conveying device) 22 to the soaking pit 11 of the first rolling line A by middle blank (slab) Wc after this second rolling line B rolling, and be with steel S by many milling trains (row) 12 finish rolling to the final products of this first rolling line A.It should be noted that, described carrying stove 22 is also a part for heating furnace.In addition, this carrying stove 22 except lateral transfer, for example, can be also the mode such as rotary.And, near the rolling line upstream side of described roughing mill 21, be provided with the edging mill 23 of the width adjustment of carrying out heavy slab Wb.
And, in the present embodiment, on described the second rolling line B, stub bar shear 30 is set, this stub bar shear 30 is positioned near the rolling line downstream of roughing mill 21, and the front and back end of being carried out middle blank (slab) Wc after reversible rolling by this roughing mill 21 is trimmed.
Due to such formation, therefore will be transferred to the first rolling line A by the second rolling line B rolling and the middle blank Wc that trimmed afterwards front and back end, and be with steel S by many milling trains (row) 12 finish rolling to the final products of this first rolling line B, therefore the effectively utilization to greatest extent of the rearmounted part (soaking pit 11, many milling trains (row) 12 and underground up-coiler 13 etc.) at continuous casting machine 10 rears in the first rolling line A can be realized, the raising of the productivity ratio of band steel S (light sheet) can be realized with few equipment investment.
In addition, in the second rolling line B, can heavy slab Wb be rolling to by roughing mill 21 to the slab thickness (for example 70～100mm left and right) that can carry out finish rolling in the first rolling line B, therefore by for example cast the heavy slab etc. of difficult steel grade for continuous casting machine 10 for from outside supply, thereby can obtain the band steel S (light sheet) corresponding to the high-quality of demand.
In addition, on the second rolling line B, stub bar shear 30 is set, this stub bar shear 30 is positioned near the rolling line downstream of roughing mill 21, the front and back end of being carried out middle blank (slab) Wc after reversible rolling by this roughing mill 21 is trimmed, therefore, the temperature of the front and back end shape defect (fish tail or tang etc.) of the middle blank Wc by after the second rolling line B rolling or front and back end can be reduced to part cuts off and makes flat shape become rectangle before transferring to the first rolling line A, thus, guarantee the stability in coiling that under final rolling that many milling trains (row) 12 in the first rolling line A carry out or many tablelands, up-coiler 13 carries out, thereby can prevent from damaging the situation of quality or productivity ratio.
[embodiment 2]
Fig. 2 is the brief configuration side view that represents the equipment of hot rolling of embodiments of the invention 2.
As shown in Figure 2, this embodiment is example as follows, , many the milling trains (row) 12 of the first rolling line A in embodiment 1 are cut apart and be configured to the upstream side milling train 12a being made up of 1 support above (being 2 supports) and the downstream milling train 12b being made up of more than 1 support (being 5 supports) in illustrated example in illustrated example, on the middle workbench between above-mentioned upstream side milling train 12a and downstream milling train 12b, material temperature adjusting device 40 is set, this material temperature adjusting device 40 regulates the temperature by the slab after upstream side milling train 12a rolling (sheet billet Wa or middle blank Wc) by cooling water or heater etc.
For other structure, at the input side of upstream side milling train 12a, oxide skin removal device 31A that the oxide skin on slab (sheet billet Wa or middle blank Wc) surface is removed is set in turn and changes longitudinal roller 32 of mechanism as width from the upstream side of rolling line, and the oxide skin removal device 31B that the surperficial oxide skin of being carried out the slab (sheet billet Wa or middle blank Wc) after temperature adjusting by material temperature adjusting device 40 is removed is set at the input side of downstream milling train 12b, in addition, identical with embodiment 1, therefore also the repetitive description thereof will be omitted on the member identical with Fig. 1, to mark prosign.
According to this embodiment, except action effect similarly to Example 1, can also obtain advantage as follows: in the first rolling line A, can make the temperature difference of length direction of the middle blank Wc being produced by the second rolling line B more even by material temperature adjusting device 40, can implement the rolling under more uniform temperature, the stability of the final rolling in the first rolling line A can be guaranteed, the situation of quality or productivity ratio can be prevented from damaging.
; the rolling of middle blank Wc in the second rolling line B is due to the heavy slab Wb after being heated by batch formula heating furnace 20 is rolled; therefore from coming out of the stove till the time of the roughing roughing mill 21 according to the lengthwise location of heavy slab Wb and difference; and also produce difference in the length direction temperature of the middle blank Wc transferring to the first rolling line A; therefore exist and damage the stability of the rolling in the first rolling line A or the problem points of final products quality, but the invention solves this problem points.In addition, the sheet billet Wa being cast out by the first rolling line A is heated by soaking pit 11, and therefore temperature is roughly even when the rolling of length direction.
[industrial applicibility]
Equipment of hot rolling of the present invention can be realized the effectively utilization to greatest extent of the rearmounted part (soaking pit 11, many milling trains (row) 12 and underground up-coiler 13 etc.) at continuous casting machine rear, is therefore applicable to being used in the manufacturing equipment of light sheet.
[symbol description]
10 continuous casting machines
11 soaking pits (conticaster output wing furnace)
The milling train (row) of 12 multistages
The milling train of 12a upstream side
The milling train in 12b downstream
13 underground up-coilers
20 batches of formula heating furnaces
21 roughing mills
22 carrying stoves (conveying device)
23 edging mills
30 stub bar shears
31A, 31B oxide skin removal device
32 longitudinal rollers
40 material temperature adjusting devices
A the first rolling line
B the second rolling line
Wa sheet billet
Wb heavy slab
Blank in the middle of Wc
S is with steel
Claims (2)
1. an equipment of hot rolling, possess the first rolling line and the second rolling line, described the first rolling line utilizes many milling trains directly to carry out finish rolling to the slab being cast out by continuous casting machine, described the second rolling line and described the first rolling line configure abreast, and utilize roughing mill to being rolled by the slab after batch formula heating furnace heating, described equipment of hot rolling will be transferred to the first rolling line by the middle blank after described the second rolling line rolling, thereby by this first rolling line finish rolling to final products, described equipment of hot rolling is characterised in that,
On described the second rolling line, be provided with stub bar shear, this stub bar shear trims the front and back end of the middle blank by after described roughing mill rolling.
2. equipment of hot rolling according to claim 1, is characterized in that,
Many milling trains in described the first rolling line are made up of upstream side milling train and downstream milling train, this upstream side milling train and downstream milling train are made up of the milling train of at least one support respectively, on the middle workbench between these upstream side milling trains and downstream milling train, be provided with material temperature adjusting device, this material temperature adjusting device regulates the temperature of the slab by after described upstream side mill milling.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2011/072142 WO2013046346A1 (en) | 2011-09-28 | 2011-09-28 | Hot rolling facility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103826764A true CN103826764A (en) | 2014-05-28 |
| CN103826764B CN103826764B (en) | 2016-01-20 |
Family
ID=47994458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180073678.7A Active CN103826764B (en) | 2011-09-28 | 2011-09-28 | Equipment of hot rolling |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5817023B2 (en) |
| CN (1) | CN103826764B (en) |
| DE (1) | DE112011105560T5 (en) |
| IN (1) | IN2014MN00552A (en) |
| WO (1) | WO2013046346A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101828560B1 (en) * | 2014-01-17 | 2018-02-12 | 다니엘리 앤드 씨. 오피시네 메카니케 쏘시에떼 퍼 아찌오니 | Plant and method for the production of metal products |
| IT201800010870A1 (en) * | 2018-12-06 | 2020-06-06 | Danieli Off Mecc | APPARATUS AND METHOD OF PRODUCTION OF TAPES |
| AT523062B1 (en) * | 2020-02-11 | 2021-05-15 | Primetals Technologies Austria GmbH | Production plant and method for operating such a production plant |
| WO2023052500A1 (en) * | 2021-10-01 | 2023-04-06 | Sms Group Gmbh | System and method for producing flat rolled products |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195584A (en) * | 1997-04-10 | 1998-10-14 | 丹尼利机械设备股份公司 | Rolling method for thin flat products and relative rolling line |
| JP2004066318A (en) * | 2002-08-08 | 2004-03-04 | Jfe Steel Kk | Method and device for setting finishing side guide of hot rolling line |
| CN1675008A (en) * | 2002-06-07 | 2005-09-28 | 新日本制铁株式会社 | Hot rolling method and apparatus for hot steel sheet |
| CN1726099A (en) * | 2002-12-14 | 2006-01-25 | Sms迪马格股份公司 | Method and installation for hot-rolling strips using a steckel rolling frame |
| CN1938110A (en) * | 2004-12-03 | 2007-03-28 | Sms迪马格股份公司 | CSP continuous casting device with a roller hearth furnace and pivoting conveyors |
-
2011
- 2011-09-28 JP JP2013535699A patent/JP5817023B2/en active Active
- 2011-09-28 WO PCT/JP2011/072142 patent/WO2013046346A1/en active Application Filing
- 2011-09-28 CN CN201180073678.7A patent/CN103826764B/en active Active
- 2011-09-28 DE DE112011105560.9T patent/DE112011105560T5/en active Pending
-
2014
- 2014-03-27 IN IN552MUN2014 patent/IN2014MN00552A/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195584A (en) * | 1997-04-10 | 1998-10-14 | 丹尼利机械设备股份公司 | Rolling method for thin flat products and relative rolling line |
| CN1675008A (en) * | 2002-06-07 | 2005-09-28 | 新日本制铁株式会社 | Hot rolling method and apparatus for hot steel sheet |
| JP2004066318A (en) * | 2002-08-08 | 2004-03-04 | Jfe Steel Kk | Method and device for setting finishing side guide of hot rolling line |
| CN1726099A (en) * | 2002-12-14 | 2006-01-25 | Sms迪马格股份公司 | Method and installation for hot-rolling strips using a steckel rolling frame |
| CN1938110A (en) * | 2004-12-03 | 2007-03-28 | Sms迪马格股份公司 | CSP continuous casting device with a roller hearth furnace and pivoting conveyors |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5817023B2 (en) | 2015-11-18 |
| DE112011105560T5 (en) | 2014-05-15 |
| JPWO2013046346A1 (en) | 2015-03-26 |
| WO2013046346A1 (en) | 2013-04-04 |
| IN2014MN00552A (en) | 2015-07-03 |
| CN103826764B (en) | 2016-01-20 |
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Effective date of registration: 20150911 Address after: Japan Tokyo port, 34 No. 6 Chicago Applicant after: Co., Ltd of general sharp special metallurgical technology Japan Address before: Tokyo, Japan Applicant before: Mitsubishi Hitachi Steel, Ltd. |
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