CN106994466A - The control method that steel edge portion heater is symmetrically heated - Google Patents
The control method that steel edge portion heater is symmetrically heated Download PDFInfo
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- CN106994466A CN106994466A CN201610051971.8A CN201610051971A CN106994466A CN 106994466 A CN106994466 A CN 106994466A CN 201610051971 A CN201610051971 A CN 201610051971A CN 106994466 A CN106994466 A CN 106994466A
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- strip
- edge
- center line
- heater
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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Abstract
The invention provides the control method that a kind of steel edge portion heater is symmetrically heated, including：The position of the strip edge heater of strip active side and transmission side is controlled according to the position of strip center line, so as to realize the symmetrical heating to strip, wherein, the inside edge of the inductive head of the strip edge heater of active side and transmission side is calculated according to following two formula respectively to the strip center line apart from Li1 and Li2：Li1=1/2Width+Ci-Lap, Li2=1/2Width-Ci-Lap, wherein, 1/2Width is distance of the strip center line to the band steel edge, Ci be the strip center line arrive milling train center line distance, Lap be the inductive head inside edge to the edge of the strip distance.The position of strip center line that the present invention is exported according to roughing controls the position of the strip edge heater of strip both sides, realizes the symmetrical heating to strip both sides, to ensure the quality of product both sides.
Description
Technical field
The present invention relates to the control method that a kind of steel edge portion heater is symmetrically heated.
Background technology
Hot-strip edge sensing heating is technology emerging in recent years.Strip is in the hot rolling
Because the heat radiation of edge is greater than intermediate portion, thus edge temperature drop can be produced, make slab
In the middle of cross section the temperature difference is produced with edge.In the porch of finishing mill, apart from slab edge
About 50~100 DEG C of 0~50mm region and the temperature difference of core.Excessive edge temperature drop
Not only increase rolling difficulty, increasing roller consume；The quality of follow-up hot-rolled and cold-rolled product can be also influenceed,
Reduce lumber recovery.
In order to reduce steel edge portion and the middle temperature difference, reference picture 1, the strip generally before finishing mill
1 both sides location arrangements strip edge heater 2 (Fig. 1 merely illustrates the edge of strip side), side
Portion's heater 2 is each equipped with inductive head 3 in the upper and lower sides of strip 1, with the edge area to strip 1
Domain is heated, and highest can make the temperature of edge raise more than 80 DEG C.
Existing strip edge heater 2 is independent system, the position of inductive head 3 of both sides above and below it
It is fixed, therefore dynamic regulation can not be carried out according to the change of middle blanket shape.And strip is in rolling
During sideslip situation occurs, if the inductive head 3 of strip edge heater 2 is unable to dynamic regulation,
Cause both sides heating amount that inconsistent situation occurs, so as to influence the quality of edges of strip side.
General hot continuous rolling producing line roughing outlet is fitted with detecting strip width and centerline deviation
Instrumentation, is influenceed, strip warp by belt steel temperature, equipment gap, the unequal factor of roll
Cross roughing rolling after strip total length center line position be not in fixed position, referring to Fig. 2,
Export plate shape maximum differs 60-70mm, and strip width also has more than ten mm fluctuation.
The skew of the total length of strip center line 10 causes strip to be heated into strip edge heater 2
When position that strip edge heater 2 heats to strip both sides occur different so as to causing both sides to be heated up
Amount is different.Such as, in the position of strip steel head, the range of lift active side of strip edge heater 2
40 degrees Celsius of temperature at 25mm, 40 degrees Celsius of heating amount at transmission side 25mm, but because
Sideslip, then occurs warm at the range of lift active side 25mm of strip edge heater 2 when in the middle part of strip
80 degrees Celsius of degree, 10 degrees Celsius of heating amount at transmission side 25mm, this species diversity is inevitable
Cause the difference of steel edge portion structure property, referring to Fig. 3.
Patent " hot rolling slab Edge Heating Temperature Measure Control System and method " (application number：
201210044530.7) describe a kind of Temperature Measure Control System and method, this method and system
Using non-contact temperature sensor, by measuring hot-rolled intermediate billet in strip edge heater porch
With the control parameter of the transverse temperature difference in exit, in real time adjustment strip edge heater, make after heating
Middle base center and the control of the edge temperature difference improve middle base transverse temperature equal in suitable scope
Even property, so as to improve the follow-up rolling performance of strip.
Patent " method for heating and controlling and its device of steel sheet production line " (publication number：CN
101389417A) provide a kind of production line for being rolled, being forged or being aligned processing steel plate
The upper heating for carrying out steel plate, steel plate production line so as to produce desired steel sheet product
Method for heating and controlling and its control device, can not only carry out temperature control, also using material as
The heating condition of induction heating apparatus is controlled.
The content of the invention
Therefore, the invention provides the control method that a kind of steel edge portion heater is symmetrically heated,
Including：The Edge Heating of strip active side and transmission side is controlled according to the position of strip center line
The position of device, so that the symmetrical heating to strip is realized, wherein, the side of active side and transmission side
Distinguish to the strip center line apart from Li1 and Li2 the inside edge of the inductive head of portion's heater
Calculated according to following two formula：Li1=1/2Width+Ci-Lap, Li2=1/2Width-Ci-Lap,
Wherein, 1/2Width be the strip center line to the distance of the band steel edge, Ci is described
Strip center line is to the distance of milling train center line, and Lap is the inside edge of the inductive head described in
The distance at the edge of strip.
Preferably, as the Li1 calculated<During Lmin1, Li1=Lmin1 is set；When calculating
Li2<During Lmin2, Li2=Lmin2 is set, wherein Lmin1, Lmin2 is respectively default
Li1 and Li2 lower limit.As the Li1 calculated>During Lmax1, Li1=Lmax1 is set；When
The Li2 calculated>During Lmax2, Li2=Lmax2, wherein Lmax1, Lmax2 is set to distinguish
For default Li1 and Li2 higher limit.
Further, in addition to：The output work of the strip edge heater is calculated according to equation below
Rate, so as to be configured to the power of the strip edge heater：P=Ki × (Ta × Va × Ha ×
Ca × Ya × Kp), wherein, Ki is default adjustment factor, and Ta is default heating amount, Va
For the transmission rate of the strip, Ha is the thickness of the strip, and Ca is the specific heat of the strip
Hold, Ya is the relative density of the strip, Kp is the resistivity of the strip.
The position of strip center line that the present invention is exported according to roughing controls the edge of strip both sides
The position of heater, realizes the symmetrical heating to strip both sides, to ensure the quality of product both sides.
Brief description of the drawings
Fig. 1 is the position relationship schematic diagram of strip edge heater and strip；
Fig. 2 is the schematic diagram for the example that strip position of center line is offset；
Fig. 3 for strip both sides of the edge temperature and center line temperature difference example
Schematic diagram, the curve of its middle and upper part represents active side, and the curve of bottom represents transmission side；
Fig. 4 is the position signal of the strip edge heater of strip total length position both sides in embodiment
Figure, the curve of its middle and upper part represents active side, and the curve of bottom represents transmission side；
The flow signal for the control method that Fig. 5 symmetrically heats for the steel edge portion heater of the present invention
Figure.
Embodiment
The steel edge portion heater of the present invention is symmetrically added with reference to the accompanying drawings and detailed description
The control method of heat is described in further detail, but not as a limitation of the invention.
Reference picture 5 describes the control method that symmetrically heats of steel edge portion heater of the present invention.
The present invention first receives various data, parameter from host computer etc., including：Strip center line 10
To band steel edge 30 apart from 1/2Width, strip center line 10 arrives the distance of milling train center line
Ci, the edge 30 of the inside edge 20 of inductive head to strip apart from Lap, default Li1 and
Li2 lower limit Lmin1, Lmin2, default Li1 and Li2 higher limit Lmax1, Lmax2,
Default adjustment factor Ki, default heating amount Ta, the transmission rate Va of strip, the thickness of strip
Spend Ha, the specific heat capacity Ca of strip, the relative density Ya of strip, the resistivity Kp of strip.
According to following two formula evaluation work sides and the inductive head 3 of the strip edge heater 2 of transmission side
Inside edge 20 to strip center line 10 apart from Li1 and Li2：
Li1=1/2Width+Ci-Lap,
Li2=1/2Width-Ci-Lap.
Then judge whether Li1 and Li2 has exceeded higher limit or lower limit.When what is calculated
Li1<During Lmin1, Li1=Lmin1 is set；As the Li2 calculated<During Lmin2, set
Li2=Lmin2, wherein Lmin1, Lmin2 are respectively default Li1 and Li2 lower limit.
As the Li1 calculated>During Lmax1, Li1=Lmax1 is set；As the Li2 calculated>Lmax2
When, Li2=Lmax2 is set, and wherein Lmax1, Lmax2 is respectively default Li1 and Li2
Higher limit.
Next, the Li1 and Li2 that are obtained according to abovementioned steps set the position of strip edge heater 2
Put, so as to realize the symmetrical heating to strip 1.Strip edge heater 2 is placed on moveable small
Che Shang, can control the position of strip edge heater 2 by controlling the movement of dolly.Fig. 4 institutes
The position view of the strip edge heater of strip total length position both sides in embodiment is shown as, can
With the adjustment of the position of the strip edge heater of finding out both sides.
After the position of strip edge heater 2 is set, two edge are calculated according to equation below
The power output P of heater 2, is then P by the power setting of strip edge heater 2：
P=Ki × (Ta × Va × Ha × Ca × Ya × Kp).
Above embodiment is only the illustrative embodiments of the present invention, it is impossible to be used in limited
The present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can be with
In the essence and protection domain of the present invention, various modifications or equivalent substitution are made to the present invention,
These modifications or equivalent substitution also should be regarded as being within the scope of the present invention.
Claims (4)
1. the control method that a kind of steel edge portion heater is symmetrically heated, it is characterised in that including：
The position of the strip edge heater of strip active side and transmission side is controlled according to the position of strip center line
Put, so that the symmetrical heating to strip is realized, wherein, the Edge Heating of active side and transmission side
The inside edge of the inductive head of device is to the strip center line apart from Li1 and Li2 respectively according to such as
Lower two formula are calculated：
Li1=1/2Width+Ci-Lap,
Li2=1/2Width-Ci-Lap,
Wherein, 1/2Width is distance of the strip center line to the band steel edge, and Ci is
The strip center line is to the distance of milling train center line, and Lap is that the inside edge of the inductive head is arrived
The distance at the edge of the strip.
2. the control method that steel edge portion heater according to claim 1 is symmetrically heated,
Characterized in that, also including：As the Li1 calculated<During Lmin1, Li1=Lmin1 is set；
As the Li2 calculated<During Lmin2, Li2=Lmin2, wherein Lmin1, Lmin2 is set to distinguish
For default Li1 and Li2 lower limit.
3. the control method that steel edge portion heater according to claim 1 is symmetrically heated,
Characterized in that, also including：As the Li1 calculated>During Lmax1, Li1=Lmax1 is set；
As the Li2 calculated>During Lmax2, Li2=Lmax2, wherein Lmax1, Lmax2 points are set
Not Wei default Li1 and Li2 higher limit.
4. the control method that steel edge portion heater according to claim 1 is symmetrically heated,
Characterized in that, also including：The power output of the strip edge heater is calculated according to equation below,
So as to which the power to the strip edge heater is configured：
P=Ki × (Ta × Va × Ha × Ca × Ya × Kp),
Wherein, Ki is default adjustment factor, and Ta is default heating amount, and Va is the strip
Transmission rate, Ha is the thickness of the strip, and Ca is the specific heat capacity of the strip, and Ya is
The relative density of the strip, Kp is the resistivity of the strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051971.8A CN106994466A (en) | 2016-01-26 | 2016-01-26 | The control method that steel edge portion heater is symmetrically heated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051971.8A CN106994466A (en) | 2016-01-26 | 2016-01-26 | The control method that steel edge portion heater is symmetrically heated |
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| CN106994466A true CN106994466A (en) | 2017-08-01 |
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| CN201610051971.8A Pending CN106994466A (en) | 2016-01-26 | 2016-01-26 | The control method that steel edge portion heater is symmetrically heated |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110000225A (en) * | 2019-04-10 | 2019-07-12 | 山西太钢不锈钢股份有限公司 | The Poewr control method of strip edge heater |
| CN110193519A (en) * | 2019-04-25 | 2019-09-03 | 山西太钢不锈钢股份有限公司 | A kind of control method for protecting strip edge heater heating head |
| CN111420998A (en) * | 2019-01-10 | 2020-07-17 | 宝山钢铁股份有限公司 | Method for uniformly heating width of precision rolling intermediate billet in length direction at temperature |
| CN111420999A (en) * | 2019-01-10 | 2020-07-17 | 宝山钢铁股份有限公司 | Method for controlling temperature difference between upper surface and lower surface of finish rolling intermediate billet |
| CN111788319A (en) * | 2018-03-23 | 2020-10-16 | 日本制铁株式会社 | Induction heating method and induction heating equipment for metal strip plate |
| CN113894166A (en) * | 2021-10-11 | 2022-01-07 | 中冶南方工程技术有限公司 | Device for induction heating of strip steel |
| CN114226469A (en) * | 2021-11-29 | 2022-03-25 | 首钢集团有限公司 | Slab position measuring device, rolling system, control method, and storage medium |
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| US4405386A (en) * | 1982-04-05 | 1983-09-20 | Olin Corporation | Process and apparatus for improving cold rollability and/or strip annealability of metals and metal alloys |
| CN101545036A (en) * | 2008-03-24 | 2009-09-30 | 宝山钢铁股份有限公司 | Method for controlling heating on edges of steel coil edge and heating device |
| CN103157670A (en) * | 2011-12-16 | 2013-06-19 | 宝山钢铁股份有限公司 | Reducing slab portion temperature dropping hot milling heat holding cover and operating device thereof |
| CN103286143A (en) * | 2012-02-27 | 2013-09-11 | 宝山钢铁股份有限公司 | System and method for measuring and controlling heating temperature of edge of hot rolling slab |
| CN103861876A (en) * | 2014-03-17 | 2014-06-18 | 莱芜钢铁集团有限公司 | Billet steel edge heating system and method |
| CN104985021A (en) * | 2015-07-29 | 2015-10-21 | 中冶南方(武汉)威仕工业炉有限公司 | Edge heating apparatus for preventing cracking of edges of band steel, and method thereof |
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| US4405386A (en) * | 1982-04-05 | 1983-09-20 | Olin Corporation | Process and apparatus for improving cold rollability and/or strip annealability of metals and metal alloys |
| CN101545036A (en) * | 2008-03-24 | 2009-09-30 | 宝山钢铁股份有限公司 | Method for controlling heating on edges of steel coil edge and heating device |
| CN103157670A (en) * | 2011-12-16 | 2013-06-19 | 宝山钢铁股份有限公司 | Reducing slab portion temperature dropping hot milling heat holding cover and operating device thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111788319A (en) * | 2018-03-23 | 2020-10-16 | 日本制铁株式会社 | Induction heating method and induction heating equipment for metal strip plate |
| CN111788319B (en) * | 2018-03-23 | 2022-07-26 | 日本制铁株式会社 | Induction heating method and induction heating equipment for metal strip plate |
| CN111420998A (en) * | 2019-01-10 | 2020-07-17 | 宝山钢铁股份有限公司 | Method for uniformly heating width of precision rolling intermediate billet in length direction at temperature |
| CN111420999A (en) * | 2019-01-10 | 2020-07-17 | 宝山钢铁股份有限公司 | Method for controlling temperature difference between upper surface and lower surface of finish rolling intermediate billet |
| CN111420999B (en) * | 2019-01-10 | 2021-06-15 | 宝山钢铁股份有限公司 | Method for controlling temperature difference between upper surface and lower surface of finish rolling intermediate billet |
| CN110000225A (en) * | 2019-04-10 | 2019-07-12 | 山西太钢不锈钢股份有限公司 | The Poewr control method of strip edge heater |
| CN110000225B (en) * | 2019-04-10 | 2020-05-08 | 山西太钢不锈钢股份有限公司 | Power control method for edge heater |
| CN110193519A (en) * | 2019-04-25 | 2019-09-03 | 山西太钢不锈钢股份有限公司 | A kind of control method for protecting strip edge heater heating head |
| CN113894166A (en) * | 2021-10-11 | 2022-01-07 | 中冶南方工程技术有限公司 | Device for induction heating of strip steel |
| CN114226469A (en) * | 2021-11-29 | 2022-03-25 | 首钢集团有限公司 | Slab position measuring device, rolling system, control method, and storage medium |
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