CN101909773B - Cooling roll for crown control of roll and control method thereof - Google Patents

Cooling roll for crown control of roll and control method thereof Download PDF

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Publication number
CN101909773B
CN101909773B CN2008801227354A CN200880122735A CN101909773B CN 101909773 B CN101909773 B CN 101909773B CN 2008801227354 A CN2008801227354 A CN 2008801227354A CN 200880122735 A CN200880122735 A CN 200880122735A CN 101909773 B CN101909773 B CN 101909773B
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China
Prior art keywords
module
roll
temperature part
external
external module
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Expired - Fee Related
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CN2008801227354A
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Chinese (zh)
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CN101909773A (en
Inventor
李宗傧
权赫喆
金相锡
李圭泽
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Posco Holdings Inc
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Posco Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/08—Lubricating, cooling or heating rolls internally
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

There is provided a cooling roll for crown control of roll and a control method thereof. The cooling roll for crown control of roll comprises a heat sink; an internal module comprising multiple layers of thermoelectric modules, in which the thermoelectric modules are stacked outside of the heat sink in a longitudinal direction; and an external module comprising multiple layers of thermoelectric modules, in which the thermoelectric modules are stacked outside of the internal module in a longitudinal direction, wherein the internal module transfers electric current, which is transferred from a surface of the external module, to the heat sink.

Description

The method of the roll crown of controllable chill roll of roll crown and control chill roll
Technical field
The present invention relates to the method for the roll crown of controllable chill roll of a kind of roll crown and control chill roll, more particularly, relate to the method for the roll crown of a kind of chill roll that in the inner cooling system that uses electrothermal module, uses and control chill roll.
Background technology
Fig. 1 is the stereogram that conventional roll is shown.With reference to Fig. 1, in casting technique or rolling mill practice, because the heat that the fricative heat between roller 1 and the material 2 is perhaps transmitted from material 2 causes roller 1 thermal expansion.Each thickness of product of this thermal expansion influence, result cause the quality of product to reduce.
Be used to prevent that traditional cooling means of roller 1 thermal expansion is divided into inner cooling system and external refrigeration system.Widely used inner cooling system is included in the cooling circuit that is formed from tubes in the internal part of roller 1 in casting technique.Through being injected into, cooling liquid (being generally water) carries out this cooling means in the cooling circuit, thus the internal part of chill roll 1.The external refrigeration system comprises a plurality of nozzles.Here, come to come chill roll 1 to internal part through pair roller 1 direct injection cooling liquid from the outer surface of roller 1.
Fig. 2 is the inner cooling system (a) that traditional chill roll is shown respectively and the stereogram of external refrigeration system (b).
With reference to (a) among Fig. 2, under the situation of inner cooling system, roller 1 itself has the space that liquid can pass.In this case, be applied in the operation of roller 1 at big load, for example, in the rolling mill practice, roller 1 can be owing to said load is out of shape.Therefore, when using roller 1, there is restriction.In addition, owing to can not in each parts of roller 1, easily change in cooling tube 3 temperature of the cooling liquid 4 that flows, the shape on surface that therefore can not control roll 1.
With reference to (b) among Fig. 2, externally under the situation of cooling system, the rising of the temperature of internal part that can not control roll 1.Therefore, when the external refrigeration system operation time was long, the temperature of the central region of roller 1 also can change.In this case, when the jet surface cooling liquid 4 through nozzle 5 pair rollers 1 only comes chill roll 1 surperficial, spend the central region of a lot of time chill rolls 1.Therefore, the cooling low-response of external refrigeration system.
Fig. 3 is the stereogram that traditional electrothermal module is shown.With reference to Fig. 3, electrothermal module comprises p-type semiconductor 6, n-type semiconductor 7, sheet metal type high-temperature part 8 and sheet metal type low temperature part 9.
When electric current when n-type semiconductor 7 flows to sheet metal type low temperature part 9, the inner conductive electronics is transferred to n-type semiconductor 7 from sheet metal.Here, the mean kinetic energy of inner conductive electronics increases.In this case, the change of kinetic energy is caused by heat absorption.When reverse direction current flow, along with the reduction of the kinetic energy of conduction electrons and exothermic reaction occurs.
Because flowing and the flow of current coupling of the joint of hole between metal and p-type semiconductor 6, therefore and metal and n-type semiconductor 7 between the opposite direction of the sense of current of joint on heat absorption and exothermic reaction take place.Based on this principle, when electric current flowed in module, heat can be delivered to sheet metal type low temperature part 9 from sheet metal type high-temperature part 8.Total amount (the Q of the heat that transmits Total) confirm by following formula 1.
[formula 1]
Q total = α pn IT c - K ( T H - T c ) - 1 2 I 2 r
Wherein, α PnExpression Seebeck (Seebeck) coefficient, I representes electric current, T HThe temperature of expression sheet metal type high-temperature part 8, T CThe temperature of expression sheet metal type low temperature part 9, K representes thermal conductivity factor, r representes resistivity.
When a plurality of modules are connected in series as stated, can sheet metal type high-temperature part 8 be maintained in desired temperatures or the steady temperature scope.
Yet there is such problem in above-mentioned traditional cooling system, promptly can not be when crimp being kept stronger resistivity chill roll.In addition, also there is such problem in traditional cooling system, that is, can not suppress because the formation of the roll crown that causes of thermal expansion through the fast response time, also can not the shape of material surface be controlled to be the shape of expectation.
Summary of the invention
Technical problem
One side of the present invention provides a kind of chill roll and roll crown control method thereof of inner cooling system, and this chill roll can make the roller cooling in to the stronger resistivity of crimp maintenance.
Another aspect of the present invention provides a kind of chill roll and roll crown control method thereof, and this chill roll can suppress because the formation of the roll crown that thermal expansion causes through fast response time, can also be easily the shape on the surface of material be controlled to be the shape of expectation.
Technical scheme
According to an aspect of the present invention, provide a kind of roll crown controllable chill roll, having comprised: heat exchanger; Internal module comprises the electrothermal module of multilayer, and wherein, said electrothermal module longitudinally is stacked on the outside of heat exchanger; External module comprises the electrothermal module of multilayer, and said electrothermal module longitudinally is stacked on the outside of internal module; Wherein, internal module will be transferred to heat exchanger from the surperficial electric current transmitted of external module.
In this case, the not other respective electrical flow of each intrastratal flow in a plurality of layer of external module controllable sub.
In addition, external module can comprise: high-temperature part is the outside of external module; The low temperature part is the inside of external module, is arranged between high-temperature part and the internal module, and wherein, high-temperature part will be transferred to the low temperature part from the surperficial electric current transmitted of external module.
In addition, each of internal module and external module comprises a plurality of units ring that longitudinally piles up, and each unit ring comprises the electrothermal module with the form formation of ring.
In addition, heat exchanger and internal module are insulated from each other through insulator, and internal module and external module are insulated from each other through insulator.
According to a further aspect in the invention; A kind of control method that is used for the control roll convexity is provided; Said control method comprises: electric current is transferred to internal module from the surface of external module; Internal module comprises the electrothermal module of multilayer, and wherein, said electrothermal module longitudinally is stacked on the inside of external module; With electric current internally module be transferred to and be arranged on the inner heat exchanger of internal module.
The respective electrical flow is respectively each intrastratal flow of a plurality of layers in this case.
In addition, said control method also can comprise: electric current is transferred to the high-temperature part as the outside of external module from external module; Electric current is transferred to the low temperature part that is arranged between high-temperature part and the internal module from high-temperature part.
Beneficial effect
As stated, according to the controllable chill roll of the roll crown of one exemplary embodiment of the present invention, owing to, therefore can be used for fast response time control because the roll crown that thermal expansion causes through the inner cooling system chill roll.
In addition; The controllable chill roll of roll crown according to an illustrative embodiment of the invention; Because electrothermal module is arranged as and can therefore can controls the surface configuration of band (strip) through the surface configuration that changes roller along the temperature of controlling electrothermal module of roller vertically independently.
In addition, because the p-n element is processed by pottery and swage load is had very strong resistivity, therefore, when big load imposes on roller, can use the p-n element.
Description of drawings
Fig. 1 is the stereogram that traditional rod is shown.
Fig. 2 is the inner cooling system (a) that traditional chill roll is shown respectively and the stereogram of external refrigeration system (b).
Fig. 3 is the stereogram that traditional electrothermal module is shown.
Fig. 4 is the exploded perspective view that illustrates according to the controllable chill roll of roll crown of one exemplary embodiment of the present invention.
Fig. 5 is the unit ring (a) that illustrates according to the external module in the controllable chill roll of the roll crown of one exemplary embodiment of the present invention, and the exploded perspective view of the assembling (b) of the unit ring that longitudinally piles up.
Fig. 6 is the stereogram that illustrates according to the assembling of the external module of the controllable chill roll of roll crown of one exemplary embodiment of the present invention and internal module.
The concise and to the point description of critical piece in the accompanying drawing:
10: external module; 10a: high-temperature part; 10b: low temperature part; 11: internal module; 12: heat exchanger.
The specific embodiment
Below, will describe exemplary embodiment of the present invention in detail with reference to accompanying drawing.Yet the description that provides here only is as preferred exemplary, and purpose only is to explain for example; Not in order to limit scope of the present invention, therefore, to it should be understood that; Without departing from the scope of the invention, can make other to these examples and be equal to replacement or modification.In the accompanying drawings, the parts that have same configuration and a function have essentially identical label.
Fig. 4 is the exploded perspective view according to the controllable chill roll of roll crown of one exemplary embodiment of the present invention.With reference to Fig. 4, the controllable chill roll of roll crown generally includes heat exchanger 12, internal module 11 and external module 10.
Internal module 11 comprises the electrothermal module of multilayer, and wherein, said electrothermal module longitudinally is stacked on the outside of heat exchanger 12.External module 10 comprises the electrothermal module of multilayer, and wherein said electrothermal module longitudinally is stacked on the outside of internal module.In addition, heat exchanger 12 passes through insulator and insulated from each other with internal module 11, and internal module 11 is insulated from each other through insulator with external module 10.
Internal module 11 will be transferred to heat exchanger 12 from the surperficial electric current transmitted of external module 10.Here, external module 10 is used for controlling the corresponding magnitude of current that flows at a plurality of layers respectively.
With describing the aforesaid method that is used to control the roll crown of chill roll in more detail.
Electric current is transferred to the internal module 11 of the electrothermal module that comprises multilayer from the surface of external module 10, wherein, said electrothermal module longitudinally is stacked on the inboard of external module 10.With reference to this operation, electric current is transferred to the high-temperature part 10a as the outside of external module 10 from the surface of external module 10, and electric current is transferred to the low temperature part 10b that is arranged between high-temperature part 10a and the internal module 11 from high-temperature part 10a then.
Then, electric current is transferred to the heat exchanger 12 of the inside that is arranged on internal module 11 from external module 11.The respective amount of the electric current that externally flows in each layer of a plurality of layers of the electrothermal module of module 10 here, is controlled.
Fig. 5 is the unit ring (a) of the external module in the controllable chill roll of roll crown that illustrates according to an illustrative embodiment of the invention, and the exploded perspective view of the assembling (b) of the unit ring that longitudinally piles up.
(a) among Fig. 5 shows the external module 10 that forms with the double stacked mode.External module 10 comprises high-temperature part 10a and low temperature part 10b.High-temperature part 10a is as the outside of external module 10, and low temperature part 10b is as the inside of external module 10.That is, the high-temperature part 10a of external module 10 is towards the surface of chill roll, and the low temperature part 10b of external module 10 is arranged between high-temperature part 10a and the internal module 11.A ring of external module 10 is called as the unit ring, said unit each magnitude of current of ring control.
With reference to (b) among Fig. 5, external module 10 has such structure: outside high-temperature part 10a and inner cryogenic part 10b mutually combine to form the unit ring, and the unit ring longitudinally piles up.Because the unit ring of external module 10 longitudinally forms with separate unit as stated, therefore can independently be controlled at each magnitude of current that flows in each unit ring.Therefore, along the unit ring that vertically can distribute and have different temperatures of chill roll.
Fig. 6 is the stereogram that illustrates according to the assembling of the external module of the controllable chill roll of roll crown of one exemplary embodiment of the present invention and internal module.With reference to Fig. 6, internal module 11 comprises the electrothermal module that longitudinally piles up, and said electrothermal module is attached to the low temperature part 10b and the heat exchanger 12 of external module 10.External module 10 includes the electrothermal module that piles up with the form of ring with internal module 11.
Internal module 11 will return heat exchanger 12 through external module 10 is delivered to the inside of chill roll from the surface of chill roll heat transmission.Here, heat exchanger 12 is installed in the one or both sides of chill roll.
Describe exemplary embodiment of the present invention in detail with reference to accompanying drawing.Yet; It should be appreciated by those skilled in the art; Because to those skilled in the art; Various changes and the modification carried out within the scope of the invention are clearly, therefore in brief description the preferred embodiments of the present invention, have only provided detailed description and particular example with way of illustration.

Claims (7)

1. controllable chill roll of roll crown comprises:
Heat exchanger;
Internal module comprises the electrothermal module of multilayer, and said electrothermal module longitudinally is stacked on the outside of heat exchanger;
External module comprises the electrothermal module of multilayer, and said electrothermal module longitudinally is stacked on the outside of internal module;
Wherein, internal module will be transferred to heat exchanger from the surperficial electric current transmitted of external module.
2. chill roll as claimed in claim 1, wherein, external module control is the respective electrical flow of each intrastratal flow in a plurality of layers respectively.
3. chill roll as claimed in claim 1, wherein, external module comprises:
High-temperature part is the outside of external module;
The low temperature part is the inside of external module, is arranged between high-temperature part and the internal module,
Wherein, high-temperature part will be transferred to the low temperature part from the surperficial electric current transmitted of external module.
4. chill roll as claimed in claim 1, wherein, each of internal module and external module comprises a plurality of units ring that longitudinally piles up.
5. method that is used to control the roll crown of chill roll, said method comprises:
Electric current is transferred to internal module from the surface of external module, and internal module comprises the electrothermal module of multilayer, and said electrothermal module longitudinally is stacked on the inside of external module;
With electric current internally module be transferred to the heat exchanger of the inside that is arranged on internal module.
6. method as claimed in claim 5, wherein, external module control is respectively at the respective electrical flow of each intrastratal flow of a plurality of layers.
7. method as claimed in claim 5 also comprises:
Electric current is transferred to the high-temperature part as the outside of external module from the surface of external module;
Electric current is transferred to the low temperature part that is arranged between high-temperature part and the internal module from high-temperature part.
CN2008801227354A 2007-12-27 2008-12-09 Cooling roll for crown control of roll and control method thereof Expired - Fee Related CN101909773B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020070139363A KR101536355B1 (en) 2007-12-27 2007-12-27 Cooling roll for the crown control of roll
KR10-2007-0139363 2007-12-27
PCT/KR2008/007259 WO2009093806A2 (en) 2007-12-27 2008-12-09 Cooling roll for crown control of roll and control method thereof

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CN101909773A CN101909773A (en) 2010-12-08
CN101909773B true CN101909773B (en) 2012-11-21

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KR (1) KR101536355B1 (en)
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WO (1) WO2009093806A2 (en)

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JP5562091B2 (en) * 2010-03-29 2014-07-30 リンテック株式会社 Pressure roller
KR101536476B1 (en) * 2013-12-25 2015-07-13 주식회사 포스코 Runout Table and Roller
WO2018211907A1 (en) * 2017-05-18 2018-11-22 パナソニックＩｐマネジメント株式会社 Roller device and printing machine
EP3590619A1 (en) * 2018-07-03 2020-01-08 Hydro Aluminium Rolled Products GmbH Method and device for winding a metal strip and use of a contact roller
CN111266413A (en) * 2020-02-24 2020-06-12 燕山大学 High-energy electric pulse shape regulating method for high-hardness and crisp cold-rolled strip
CN115635052B (en) * 2022-10-31 2023-05-09 华中科技大学 Casting roller with real-time cooling speed regulation and control and casting machine

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Publication number Publication date
KR20090071148A (en) 2009-07-01
JP5378407B2 (en) 2013-12-25
KR101536355B1 (en) 2015-07-13
CN101909773A (en) 2010-12-08
WO2009093806A3 (en) 2009-09-17
JP2011507706A (en) 2011-03-10
WO2009093806A2 (en) 2009-07-30

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