CN1310648A - Method for producing a hoop in a combined casting and rolling apparatus and device for realising the same - Google Patents
Method for producing a hoop in a combined casting and rolling apparatus and device for realising the same Download PDFInfo
- Publication number
- CN1310648A CN1310648A CN 99807201 CN99807201A CN1310648A CN 1310648 A CN1310648 A CN 1310648A CN 99807201 CN99807201 CN 99807201 CN 99807201 A CN99807201 A CN 99807201A CN 1310648 A CN1310648 A CN 1310648A
- Authority
- CN
- China
- Prior art keywords
- rolling
- power
- blank
- induction installation
- group
- 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.)
- Pending
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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
- B21B1/46—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
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
- B22D11/201—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
The present invention pertains to the field of metallurgy and more precisely relates to combined methods for continuously casting slabs and for continuously rolling the same. The method for producing a hoop in a combined casting and rolling apparatus involves continuously casting a bar slab while maintaining a constant level of metal in the crystalliser, heating of the slab induction and rolling said slab. The continuous casting and the rolling of the slab are carried out according to a continuous process. During the initial step of the process, the metal is maintained at a constant level in the crystalliser by controlling the speed of the draw rolls of the slab continuous-casting machine. At the beginning of the rolling process, the function of the draw rolls for maintaining a constant level of metal in the crystalliser is transferred to a first cage of the rolling mill. Before the rolling process, the induction heating of the slab is carried out in two groups of inductors operating under two currents. The power in the first inductor operating is constent and equal to half of desired nominal power for heating a bar slab, but the power in the second inductor operating is alterable, the heating power in the second inductor operating is determined by the measured value of a bar slab surface temperature at the first inductor operating entrance and the second inductor operating exit. The apparatus for producing a hoop in a combined casting and rolling apparatus includes a combined casting device, for moulding a bar slab, having a crystalliser and twice cooling system, guiding roll and nip roll, cropping shear for cutting the front end of a bar slab with drag bar, inductor operating for heating a bar slab and rolling mill.
Description
Invention scope
The present invention relates to metallurgy, specifically, relate to casting and rolling process and produce the light section section bar.
Background of invention
At present the continuous casting of blank and subsequently rolling being combined into single continuous casting and rolling unit is promoted widely.For instance, the 3rd phase periodical in June nineteen ninety-five " international steel epoch (SteelTimes International) " 14-15 page or leaf has published behind the blank continuous casting that one piece of Danieli Off Mecc (DanielyCompany) develops directly rolling technology.
Aspect production light section section bar, the casting and rolling process that above-mentioned document is discussed is compared with common process has very significant advantage.Common process is to be rolled after being transported to milling train and adding hot continuously cast material in heating furnace after the continuous casting billet cooling again, and the casting and rolling process of above-mentioned document has been cancelled and continuous casting billet is heated to temperature required process, just reduction of energy consumption like this before rolling.But the technology that the document proposes also has a series of shortcomings.These shortcomings comprise: fuel consumption is big, and iron scale is many, and equipment occupation space is big, the operating rate of rolling mill reduction that roll dynamic load load increases and rolling mill practice instability (rolled piece skids) causes etc.
" international steel epoch " the 16-17 page or leaf in March has published a kind of and the immediate technology of producing section bar on the continuous casting and rolling unit of the present invention, this process using eddy-current heating steel billet, heat steel billet specific energy consumption minimizing 50-60% mutually with combustion gas, the burning iron sheet is generated reduce to 0.25%.
Yet this technology has a significant disadvantages, and that is exactly that blank continuous casting and tandem rolling closely do not link together, and this makes the operating rate of milling train reduce, simultaneously must cutting blank, thereby additive decrementation energy.
In addition, advancing equipment requires very large space, and the rolling preceding process that heats blank by one group of continuous heat supply of induction installation can not provide the heated perimeter of steel billet the best.
Technical scheme
The objective of the invention is to overcome above-mentioned shortcoming, a kind of method of producing the light section section bar on the continuous casting and rolling unit is provided, this method may further comprise the steps: continuous casting material; In crystallizer, keep metal bath surface to be in invariable level; The eddy-current heating blank; Rolling under the continuous processing condition.Therefore pass through to regulate the speed of conticaster carry-over pinch rolls in the initial period, making metal bath surface in the crystallizer be in constant state keeps, when beginning was rolling, the function that metal bath surface is remained on constant state in crystallizer was finished by first rolling mill.The eddy-current heating of blank should be finished by device by two group of two influenza before rolling, and the heating power in first group of induction installation equals to heat half of rated power that blank needs, and power remains unchanged.But the power of each bringing-up section can be determined according to the blank surface measured temperature in first group of induction installation porch and second group of induction installation exit in the power variable of second group of induction installation, second group of induction installation.In second group of induction installation, the heating blank carries out according to the following relationship formula:
N
Cn=K*V-(2t
3 On average-1.19t
1 n-0.652t
2 n-273)-A
Here N
CnExpression can be regulated the power of hot-fluid, kW;
V represents the pulling rate of steel billet, m/s;
t
1 n-t
2 nThe surface temperature of representing first group of induction installation porch and second group of induction installation exit blank respectively, ℃;
t
3 On averageThe mean value of representing rolling preceding blank surface temperature, ℃;
K represents to consider the coefficient of continuous casting billet cross dimensions change, and its value is 1.02-1.38;
A represents the numerical value of constant power, equals 350-380.Wherein, less K and A value corresponding less continuous casting billet basal area (as 100mm
2), and bigger K and A value corresponding the basal area of bigger continuous casting billet (as 125mm
2).
Method of the present invention can be implemented with equipment illustrated in figures 1 and 2.
Fig. 1 is the schematic diagram that is used for producing continuously the continuous casting and rolling unit of light section section bar;
Fig. 2 is the schematic diagram of blank eddy-current heating section.
Describe in detail with reference to the accompanying drawings.Equipment shown in Figure 1 is the continuous casting and rolling unit, this unit comprises the conticaster with crystallizer 1, secondary cooling system 2, deflector roll 3 and carry-over pinch rolls 4, band is drawn the crop shears 5 that the blank front end of bar cuts, be used for heating two groups of induction installations 6 and 7 of blank, and milling train 8 (schematic diagram of first rolling mill).The special feature of this equipment is, induction installation group 6 and 7 and milling train 8 be arranged to have a processing line with the crystallizer 1 of conticaster, wherein, the drive unit of the drive unit of carry-over pinch rolls 4 and first rolling mill is connected on the sensor 12 by signal of telecommunication control system 11 through switch 9, the metal bath surface that this sensor 12 is measured in the crystallizer 1.The power of first group of induction installation 6 be fix, nonadjustable, and the power of second group of induction installation 7 is adjustable.
Fig. 2 has represented the schematic diagram of blank eddy-current heating section.This heater also comprises an ardometer 13 that is positioned at before first group of induction installation 6 except two groups of induction installations 6 and 7, survey the camera 14 by blank and be positioned at ardometer 15 after second group of induction installation 7.Feeding roller 16 is determined the speed of first group of induction installation porch blank.The detailed description of the embodiment of the invention
Producing the method for light section section bar can implement by following mode with equipment of the present invention with the continuous casting and rolling unit.
When beginning to cast (insertion is drawn bar and begun to draw base in the usual way), and when blank 17 enters the carry-over pinch rolls of conticaster, set the rotating speed of carry-over pinch rolls, make and guarantee that by metal bath surface sensor in a signal of telecommunication control system, a switch, the crystallizer metal bath surface in crystallizer remains unchanged.When continuous casting installation roll 3 was carried, blank solidified, and cut the blank front end that band draws bar with crop shears then.When arriving first group of induction installation,, in the induction installation of adjustable power joint, set the heating cycle of blank according to the surface temperature of blank and the signal of speed and sensor.Heating cycle is set according to input and output value, speed and the basal area of the surface temperature of blank by a Programmable Logic Controller (not shown).
Like this, when beginning to produce, also promptly when the induction installation exit does not have required blank data, then first and second groups of induction installations are according to its specified (name) constant power work.Should point out that when producing the light section section bar, the preferred parameter of blank is 100mm
2And 125mm
2, the rated power of first and second groups of induction installations all is 500kW.
In case blank leaves second group of induction installation, and the blank surface temperature signal in second group of induction installation exit is received, and then second group of induction installation just begins with the work of power-adjustable condition.
When blank arrived first rolling mill, carry-over pinch rolls kept the poor function of metal bath surface in the crystallizer, are finished by first rolling mill by signal of telecommunication control system and switch.
Begin rolling after, whole system is worked under stable process conditions, rolling before the temperature range of blank section be 1220-1250 ℃.
Industrial applicibility
The present invention proves through the trial production result, except having realized aforementioned purpose of the present invention, namely Directly the light section section bar is produced in continuous casting and rolling, and the present invention also provides such possibility, that is: subtract Lacked equipment occupation space, processing performance is improved as: energy consumption reduces 20-30%, iron oxide The generation of skin reduces 0.5-1.0%, has also improved operating environment, and the operation that has improved milling train is reliable The property.
Claims (3)
1. on the continuous casting and rolling unit, produce the method for light section section bar, comprise continuous casting material, in crystallizer, keep metal bath surface to be in invariable level, eddy-current heating and rolling blank, it is characterized in that, the continuous casting of realization blank and rolling under the continuous processing condition, being in constant state by the metal bath surface of speed in the technology initial period makes crystallizer of regulating the conticaster carry-over pinch rolls keeps, when beginning is rolling, carry-over pinch rolls are finished the effect that metal bath surface remains unchanged in crystallizer by first rolling mill, the eddy-current heating of blank should be finished by device by two group of two influenza before rolling, the power of first group of induction installation equals to heat half of rated power that blank needs, but the power variable of second group of induction installation, the variable power of its bringing-up section is specifically set according to the surface temperature of blank and the measured value of speed.
2. the method for claim 1, wherein, can be according to the heating power of each bringing-up section in the variable eddy-current heating group of the blank velocity measurement in first group of induction installation porch and second group of induction installation exit and the concrete setting power of its surface temperature measurement value, specifically be set in second group of induction installation, the heating blank carries out according to the following relationship formula:
N
Cn=K*V* (2t
3 On average-1.19t
1 n-0.652t
2 n-273)-A
Here N
CnRepresent adjustable heating power, kW;
V represents to draw base speed, m/s;
t
1 n-t
2 nThe surface temperature of representing first group of induction installation porch and second group of induction installation exit blank respectively, ℃;
t
3 On averageThe mean value of representing rolling preceding blank surface temperature, ℃;
K represents to consider the coefficient of continuous casting billet cross dimensions change, and its value is 1.02-1.38;
A represents the numerical value of constant power, and it equals 350-380, and wherein, constant power was set equally with the heating power that can regulate the induction installation group of power when production process began.
3. on the continuous casting and rolling unit, produce the equipment of light section section bar, this equipment comprises a casting apparatus that is used for casting ingot, this casting apparatus has crystallizer and secondary cooling system, deflector roll and carry-over pinch rolls, band is drawn the crop shears that the blank front end of bar cuts, be used for heating the induction installation of blank, and milling train, it is characterized in that, induction installation and milling train are arranged to crystallizer with casting apparatus on a processing line, the drive unit of the drive unit of carry-over pinch rolls and first rolling mill is connected on the sensor by signal of telecommunication system through a switch, the metal bath surface in this sensor measurement crystallizer; Described induction installation has two groups, and first group of induction installation has a constant uncontrollable rated power, and second group of induction installation has an adjustable power.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU98111378 | 1998-06-10 | ||
| RU98111378A RU2134179C1 (en) | 1998-06-10 | 1998-06-10 | Process of manufacture of merchant-mill products in combined casting and rolling aggregate and gear for its realization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1310648A true CN1310648A (en) | 2001-08-29 |
Family
ID=20207282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99807201 Pending CN1310648A (en) | 1998-06-10 | 1999-04-23 | Method for producing a hoop in a combined casting and rolling apparatus and device for realising the same |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1310648A (en) |
| EA (1) | EA002047B1 (en) |
| RU (1) | RU2134179C1 (en) |
| WO (1) | WO1999064177A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680051B (en) * | 2003-12-09 | 2010-05-12 | 伊斯帕特工业有限公司 | Slab billet continuous casting and tandem rolling equipment and method |
| CN102387874A (en) * | 2009-04-09 | 2012-03-21 | 西门子Vai金属科技有限责任公司 | Method and device for preparing hot-rolling stock |
| CN105121042A (en) * | 2013-03-08 | 2015-12-02 | Sms集团有限公司 | Method for producing a metal strip by casting and rolling |
| CN106232250A (en) * | 2014-04-23 | 2016-12-14 | 东芝三菱电机产业系统株式会社 | Rolling system |
| CN106938279A (en) * | 2016-01-04 | 2017-07-11 | 王晓军 | A kind of new method of use continuous casting and rolling unit aluminum and aluminum alloy round aluminium bar |
| CN109848385A (en) * | 2019-03-12 | 2019-06-07 | 上海大学 | A device and method based on electromagnetic induction heating for continuous casting at constant temperature |
| CN109848388A (en) * | 2019-03-12 | 2019-06-07 | 上海大学 | A device and method for continuous casting billet unloading at constant temperature based on direct current heating |
| CN111069553A (en) * | 2019-12-16 | 2020-04-28 | 武汉科技大学 | Quality improvement method of continuous casting billet |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2498878C1 (en) * | 2012-04-24 | 2013-11-20 | Анатолий Аркадьевич Злобин | Method of making profiled iron from scrap metal and device to this end |
| CN107413850B (en) * | 2017-06-28 | 2019-02-01 | 钢铁研究总院 | Transmission process casting marching method for Direct Rolling side's rectangle steel billet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3310867A1 (en) * | 1983-03-25 | 1984-10-04 | Mannesmann AG, 4000 Düsseldorf | Cast-rolling plant for rolling continuously cast material |
| SU1235053A1 (en) * | 1984-12-20 | 1996-02-20 | Уральский политехнический институт им.С.М.Кирова | Method of rolling continuously cast blank |
| JP2593534B2 (en) * | 1988-11-11 | 1997-03-26 | 株式会社日立製作所 | Hot rolling equipment |
| DE4009861C2 (en) * | 1990-03-28 | 2003-06-12 | Sms Demag Ag | Process for the production of hot-rolled bar material such as fine steel or wire and plant for carrying out the process |
-
1998
- 1998-06-10 RU RU98111378A patent/RU2134179C1/en not_active IP Right Cessation
-
1999
- 1999-04-23 CN CN 99807201 patent/CN1310648A/en active Pending
- 1999-04-23 EA EA200001156A patent/EA002047B1/en not_active IP Right Cessation
- 1999-04-23 WO PCT/RU1999/000127 patent/WO1999064177A1/en active Application Filing
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680051B (en) * | 2003-12-09 | 2010-05-12 | 伊斯帕特工业有限公司 | Slab billet continuous casting and tandem rolling equipment and method |
| CN102387874A (en) * | 2009-04-09 | 2012-03-21 | 西门子Vai金属科技有限责任公司 | Method and device for preparing hot-rolling stock |
| CN102387874B (en) * | 2009-04-09 | 2014-12-10 | 西门子Vai金属科技有限责任公司 | Method and device for preparing hot-rolling stock |
| US8950227B2 (en) | 2009-04-09 | 2015-02-10 | Siemens Vai Metals Technologies Gmbh | Method and device for preparing hot-rolling stock |
| CN105121042A (en) * | 2013-03-08 | 2015-12-02 | Sms集团有限公司 | Method for producing a metal strip by casting and rolling |
| CN106232250A (en) * | 2014-04-23 | 2016-12-14 | 东芝三菱电机产业系统株式会社 | Rolling system |
| CN106232250B (en) * | 2014-04-23 | 2018-07-20 | 东芝三菱电机产业系统株式会社 | Rolling system |
| CN106938279A (en) * | 2016-01-04 | 2017-07-11 | 王晓军 | A kind of new method of use continuous casting and rolling unit aluminum and aluminum alloy round aluminium bar |
| CN109848385A (en) * | 2019-03-12 | 2019-06-07 | 上海大学 | A device and method based on electromagnetic induction heating for continuous casting at constant temperature |
| CN109848388A (en) * | 2019-03-12 | 2019-06-07 | 上海大学 | A device and method for continuous casting billet unloading at constant temperature based on direct current heating |
| CN111069553A (en) * | 2019-12-16 | 2020-04-28 | 武汉科技大学 | Quality improvement method of continuous casting billet |
| CN111069553B (en) * | 2019-12-16 | 2021-08-31 | 武汉科技大学 | A kind of quality improvement method of continuous casting slab |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1999064177A1 (en) | 1999-12-16 |
| EA002047B1 (en) | 2001-12-24 |
| EA200001156A1 (en) | 2001-06-25 |
| RU2134179C1 (en) | 1999-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |