CN108602099A - Utilize the method for Crown control cast strip - Google Patents

Abstract

The present invention provides the methods and apparatus for continuously casting strip by controlling roll crown.Include at least two expansion loops for the equipment by controlling roll crown continuously to cast strip, at least two expansion loops are located in cylindrical tube and adjacent with cylindrical tube, and are spaced in the 450mm for the marginal portion of Cast Strip being formed in during casting manipulations in the opposite end portions of casting roll.Alternatively or additionally, which includes at least one expansion loop, the position of the center portion for the Cast Strip which forms in cylindrical tube on corresponding to casting roll during casting manipulations.The isolation coating of each expansion loop at least one heating element and thereon, and be adapted for increasing on radial dimension so that the thickness profile of the roll crown and Cast Strip of the casting surface for changing casting roll is expanded in cylindrical tube during casting.

Description

Utilize the method for Crown control cast strip

The application is the international application for the U. S. application No.14/946,872 for being filed on November 20th, 2015.

Technical field

The present invention relates to the cast strip by the continuous casting in dual roll casting machine by.

Background technology

In dual roll casting machine, fusing metal is introduced between the horizontal casting rolls of cooled a pair of of phase reverse rotation so that Metal-back is solidified on mobile casting roller surface and is brought together after at the roll gap before horizontal roller, and the band to generate solidification produces Product are delivered with product from the roll gap between casting roll downward.Term " roll gap (nip) " used herein is closest to refer to casting roll The general area located together.Fusing metal can be from steel ladle (ladle) by entering smaller container or a series of smaller containers In, metal delivering mouth (nozzle) and the mouth above roll gap are flowed through from smaller container, forms the casting of fusing metal Pond, casting pond are supported on the casting surface of casting roll extended above the roll gap and along the length of roll gap.This casting pond is logical Often by being defined between the side plate or side seal board that the end surface of holding and casting roll is slidably engaged, to limit the resistance in casting pond Two ends of outflow.

Dual roll casting machine can by the fusing of the sequence by being located in the steel ladle on control tower (turret) steel continuously Manufacture Cast Strip.Fusing metal is poured out from each steel ladle, and then pours into tundish, and is then flowing through metal delivering It is poured into removable tundish (tundish) before in mouth to casting pond.Tundish allows to be handed over full steel ladle on control tower Change empty steel ladle, the manufacture without interrupting Cast Strip.

In casting strip by dual roll casting machine, casting being generally made of copper or copper alloy, being general coated with chromium or nickel Roller by with cooling inside cooling water, allowing high heat-flux and the quick solidification of band, wherein casting roll is subjected in turn during casting From the considerable thermal deformation for being exposed to fusing metal.The convexity of the casting surface of casting roll changes during casting manipulations.Casting roll Casting surface convexity so that determine the strip thickness profile of thin Cast Strip manufactured by dual roll casting machine, that is, cross sectional shape.With convex The casting roll manufacture of face (that is, positive convexity) casting surface has the Cast Strip of negative (that is, center is sunken) cross sectional shape.On the contrary, tool There is the casting roll manufacture of concave surface (that is, negative convexity) casting surface that there is the Cast Strip of positive (that is, center is raised) cross sectional shape.In this way, Under typical casting condition, the roll crown of the casting surface of casting roll is for manufacturing desired band section thickness profile.

In thin strip casting, casting roll is usually machined as having initial convexity when cold, and initial convexity is based on casting The estimated convexity of the casting surface of the casting roll of period.However, the casting surface of casting roll is between cool condition and casting condition The difference of shape be it is difficult to predict.In addition, the convexity of the casting surface of casting roll during casting manipulations may significantly change. The convexity of the casting surface of casting roll may change in the temperature due to the fusing metal in the casting pond for being supplied to casting machine during casting Become, due to other cast bars slightly changed in the change on the cast rotating of casting roll and the composition of steel due to such as melting Part and change.

Motion before casting roll Crown control makes casting roll physically deform dependent on mechanical device；For example, passing through casting The movement of Deformed piston or other elements in roller applies bending force by the support shaft to casting roll.However, these are for casting Motion before roll crown control has limitation.For example, (herein, " JP ' 459 ") Japan Patent No.2544459 is described Casting roll with internal " the roller heating component for being embedded in the water cooling in two end sections " is being used for controlling during casting In the deformation of each roll end experience.Referring to, JP ' 459, section：" component used by order to solve the problems, such as ".Casting roll is solid gold Belong to roller and needs the water heating component of the end of casting roll with internal cooling channel.United States Patent (USP) No.5,560,421 (herein, " ' 421 patent ") discusses the limitation of the casting machine disclosed in JP ' 459, claims " each cylinder to be heated (drum) 01 thermal capacitance is big, and the deformation response degree of the shape of the outer surface for the cylinder to be controlled is low, and will be difficult to Even if or workpiece can not possibly be controlled ".' 421 patents, row 1, ll.64-row 2, ll.1.' 421 patents are continuing with " would be impossible to Suitably control the shape for the workpiece continuously to cast ".Ibid, row 2, ll.6-7.' 421 patents propose solution, There is middle solid casting roll end cut, end cut to have the big outer annular element (going to solid roller) heated by water.This A little circular elements are used for changing the profile of casting roll.' 421 patents, row 2, ll.37-42.

However, such as those of proposing that big solid casting roll involves great expense by JP ' 459 and/or ' 421 patents, there is phase To short service life (since the heat from the cycle heat flux undergone during the twin roller casting in larger cylinder weight is tired The effect of labor), and be less susceptible to respond due to their big thermal mass.

Have also been proposed by expansion loop be positioned directly in cylindrical tube (for example, the copper and copper alloy of 80 mm of thickness, can Selection of land has the coating of chromium or evanohm thereon, and with the multiple longitudinal water-flowing paths for extending through pipe) on, to be formed Casting roll.This motion is attempted and fails.The heat for providing expansion loop is passed in cylindrical tube, therefore ring will not be effectively Cylindrical tube is set to expand in response to heat, commercially to control the shape of the convexity of the casting surface of casting roll.Correspondingly, it still deposits It is simultaneously controlled in turn by dual roll casting machine in the shape to the convexity in direct during casting and nearly control casting roll casting surface The demand of the reliably and effectively mode of the section thickness profile of the thin Cast Strip of manufacture.

Invention content

Disclosed in this invention is by by being located in the cylindrical tube for forming casting roll and adjacent with cylindrical tube swollen Tensioner ring come control the convexity of the casting surface of casting roll and control casting roll convexity and and then controlling sections strip thickness profile reliable and Effective method.Disclosed is by controlling roll crown come the method for continuously casting strip, include the following steps：

A. casting machine is assembled, there is casting machine the casting roll of a pair of of phase reverse rotation, the casting roll of a pair of of phase reverse rotation to have in-between Roll gap, can deliver Cast Strip downward from roll gap, and there is each casting roll the casting surface formed by cylindrical tube, cylindrical tube to have No more than the material selected from the group being made of copper and copper alloy of 80 mm of thickness, optionally have the metal that is coated on or Metal alloy, and with the multiple longitudinal water-flowing paths for extending through cylindrical tube；

B. at least two expansion loops are located in cylindrical tube and adjacent with cylindrical tube, and are being cast in Cast Strip Interval in the 450mm (preferably in 200mm) of the marginal portion in the opposite end portions of casting roll is formed in during operation, often A expansion loop has at least one heating element and isolation coating thereon and is adapted for increasing on radial dimension so that is casting Cylindrical tube changes the thickness profile of the roll crown and Cast Strip of the casting surface of casting roll during making；

C. assemble metal delivery system, metal delivery system can be formed casting pond, casting pond be supported on casting roll in roll gap The casting surface of top has the side seal board adjacent with the end of roll gap, to limit casting pond；And

D. it is controlled swollen in response at least one of the digital signal received from least one sensor or analog signal The radial dimension of tensioner ring, to control the roll crown of the casting surface of casting roll during casting manipulations.

Being applied to the amount of the power of expansion loop can be changed based on the feedback from least one sensor, one Or multiple sensors or sensor can sense at least one of following property：

The temperature of one or more expansion loops,

The thickness profile in downstream is cast,

The local thickness at the restriction point close to Cast Strip edge of Cast Strip,

Casting roller surface convexity during casting manipulations, and

Radial casting roll dilation close at the restriction point at Cast Strip edge；

And the number or simulation (typically electric) signal of at least one of the above-mentioned property of mark Cast Strip can be generated.

It should carefully make the isolation coating on each expansion loop sufficiently thick, to control or eliminate the heat from expansion loop to casting roll Amount is transmitted.At least 0.010 inch of isolation coating (such as 0.025 inch) is necessary on thickness, with have from expansion loop to The effective control of the heat transfer of casting roll.Completely cutting off coating can be with plasma spray coating on expansion loop.Isolation coating can be used Zirconium oxide spraying (zirconium oxide of such as 8% stabilized with yttrium oxide is sprayed) carrys out plasma spray coating.It should be noted that isolation coating can be attached It is applied to cylindrical tube with adding, but for economy and validity, isolation coating should be applied directly to expansion loop.

Each expansion loop can have at least one heating element, and heating element can be by stainless steel, nickel or nickel alloy system At.One or more heating elements can be as expected and in each expansion loop.Each expansion loop can provide up to The heating of 30kW inputs；Preferably, the heating input of at least 3kW.

Expansion loop can also have across its water passage, and water flowing is allowed to pass through ring.The water for flowing through expansion loop can To be adjusted to make expansion loop expansion or shrinkage on radial dimension, and the diameter of cylindrical tube is made to increase as expected in turn Or reduce, to control the protuberance shape of the casting surface of casting roll during operation.

In addition, can also be included in response to from least one come the method that continuously casts strip by controlling roll crown At least one of digital signal or analog signal that sensor receives changed the radial dimension of expansion loop and in the casting manipulations phases Between control casting roll casting surface roll crown when, the step of control rotary speed of the casting roll driver to change casting roll.

In addition, the method for continuously casting strip by controlling roll crown can also include that will correspond to casting for Cast Strip The step of at least one expansion loop (such as up to 15 expansion loops) positioning of center portion in casting roll is formed in during making, each Isolation coating of the expansion loop at least one heating element and thereon, and be adapted for increasing and reducing radial dimension so that The thickness profile of the convexity and Cast Strip of the casting surface for changing casting roll is expanded and shunk in cylindrical tube during casting.In addition, logical It may include changing in response to the electric signal received from sensor that control roll crown, which is crossed, come the method for continuously casting strip The radial dimension of the expansion loop of insulating coating with the marginal portion interval with Cast Strip and with the central portion corresponding to Cast Strip The radial dimension of one or more expansion loops of the isolation coating divided is with the casting surface of control casting roll during casting manipulations When roll crown, the step of control rotary speed of the casting roll driver to change casting roll.

Alternatively, it may comprise steps of come the method for continuously casting strip by controlling roll crown：

A. casting machine is assembled, there is casting machine the casting roll of a pair of of phase reverse rotation, casting roll to have roll gap therebetween, can be from roll gap court Lower delivering Cast Strip, each casting roll have the casting surface formed by cylindrical tube, and cylindrical tube, which has, is not more than 80 mm of thickness The material selected from the group being made of copper and copper alloy, optionally there is the metal or metal alloy that coats on it, and have There are the multiple longitudinal water-flowing paths for extending through cylindrical tube；

B. at least one expansion loop is positioned in the center portion being formed in during casting in casting roll corresponding to Cast Strip In cylindrical tube, at least one expansion loop has at least one heating element and isolation coating thereon and is adapted in diameter Change in size so that the thickness wheel of the convexity and Cast Strip of the casting surface for changing casting roll is expanded in cylindrical tube during casting It is wide；

C. assemble metal delivery system, metal delivery system can be formed casting pond, casting pond be supported on casting roll in roll gap The casting surface of top has the side seal board adjacent with the end of roll gap, to limit casting pond；

D. in response at least one of the digital signal received from least one sensor or analog signal and control to The radial dimension of a few expansion loop, to control the roll crown of the casting surface of casting roll during casting manipulations.

Being applied to the amount of the power of one or more expansion loops can be become based on the feedback from least one sensor Change, one or more of sensors or sensor can sense at least one of following property：

The temperature of one or more expansion loops；

The thickness profile in Cast Strip downstream；

Local thickness of the Cast Strip at the restriction point close to Cast Strip center,

Casting roller surface convexity during casting manipulations,

Radial casting roll dilation close at the restriction point in Cast Strip center；

And the number or simulation (typically electric) signal of at least one of the above-mentioned property of instruction Cast Strip can be generated.

Again, the isolation coating on each expansion loop is answered sufficiently thick, to efficiently control the heat from expansion loop to casting roll Amount is transmitted.The isolation coating of at least 0.010 inch (such as 0.025 inch) is necessary on thickness, to efficiently control from swollen Heat transfer of the tensioner ring to casting roll.Completely cutting off coating can be with plasma spray coating on expansion loop.Isolation coating can use zirconium oxide Spraying (zirconium oxide of such as 8% stabilized with yttrium oxide is sprayed) plasma spray coating.It should be noted that isolation coating can additionally apply To cylindrical tube, but for economy and validity, isolation coating should be applied directly to expansion loop.

Again, each expansion loop can have at least one heating element.One or more heating elements can be by not Rust steel, nickel or nickel alloy are made and position as desired.One or more heating elements can be located at each as expected Any place around expansion loop is with effective.Each expansion loop can provide the heating input up to 30kW；Preferably, at least 3kW Heating input.

Expansion loop can again have across its water passage, to allow the flow by ring.Flow can be adjusted so that Expansion loop expansion or shrinkage on radial dimension, and the diameter of cylindrical tube is made to increase or reduce as expected in turn, with The shape of casting roll is controlled during operation.

In addition, can also be included in response to from least one come the method that continuously casts strip by controlling roll crown Electric signal that sensor receives and change the radial dimension of expansion loop and control the casting surface of casting roll during casting manipulations When roll crown, the step of control rotary speed of the casting roll driver to change casting roll.

Have in addition, can also include each expansion loop by the alternative for controlling roll crown continuously to cast strip At least one heating element and isolation coating thereon and be adapted for increasing on radial dimension so that cylindrical tube expansion and During casting change casting roll casting surface roll crown and Cast Strip thickness profile when, by least two during casting manipulations Expansion loop is located in the Cast Strip in cylindrical tube and in adjacent with cylindrical tube and opposite end portions with casting roll in edge part In the 450mm divided the step of interval.In addition, may include responding by controlling roll crown come the method for continuously casting strip Change the expansion with isolation coating of the center portion corresponding to Cast Strip in the electric signal received from least one sensor The radial dimension of ring and with the marginal portion interval of Cast Strip have thereon isolation coating expansion loop radial dimension simultaneously When controlling the roll crown of the casting surface of casting roll during casting manipulations, control casting roll driver is to change the rotary speed of casting roll The step of.

In each example, expansion loop can be made of the austenitic stainless steel of such as 18/8 austenitic stainless steel.Often A expansion loop can be with 50 to 150 millimeters of ring size；Preferably, 70 millimeters.Each expansion loop can have up to 200 millis The width of rice；Preferably up to 100mm, more preferably 83.5 millimeters.

In each embodiment of method, the convexity of the casting surface of casting roll can easily change, desired to realize The thickness profile of Cast Strip.Each expansion loop with isolation coating thereon is adapted for increasing on radial dimension or reducing and make Cylindrical tube expansion changes the thickness profile of the convexity and Cast Strip of the casting surface of casting roll.The thickness of cylindrical tube can be on thickness Between 40 and 80 millimeters or on thickness between 60 and 80 millimeters.

In each embodiment of method, at least one sensor can be positioned at downstream, be adapted for the thickness of sensing Cast Strip Degree profile and the electric signal for generating the thickness profile for indicating Cast Strip.Sensor can be located at and pinch roller (pinch roll) phase Neighbour, band pass through pinch roller after the casting.It can be controlled by the electric signal in response to being received from the sensor each swollen The radial dimension of tensioner ring realizes the Crown control of the casting surface of casting roll.Furthermore, it is possible to by response to being received from sensor Electric signal and when also changing the radial dimension of each expansion loop, control casting roll driver is real to change the rotary speed of casting roll The Crown control of the casting surface of existing casting roll.

The radial dimension of each expansion loop can be independently controlled with the radial dimension of other one or more expansion loops.It can To control the radial dimension of the adjacent expansion loop of belt edge on the casting surface with casting roll independently of one another.Furthermore, it is possible to The belt edge phase on the casting surface with casting roll is independently controlled corresponding to one or more expansion loops of the center portion of Cast Strip The radial dimension of adjacent expansion loop.

It is also disclosed that the equipment for continuously casting strip for controlling roll crown, including：

A. the casting roll of a pair of of phase reverse rotation, the casting roll of a pair of of phase reverse rotation have roll gap therebetween, can be from roll gap downward Cast Strip is delivered, there is each casting roll the casting surface formed by cylindrical tube, cylindrical tube to have no more than 80 mm of thickness Material selected from the group being made of copper and copper alloy optionally has the metal or metal alloy being coated on, and has Extend through multiple longitudinal water-flowing paths of cylindrical tube；

B. at least two expansion loop, at least two expansion loops are in cylindrical tube and adjacent with cylindrical tube, and (preferably in 200mm in the 450mm for the marginal portion of Cast Strip being formed in during casting manipulations in the opposite end portions of casting roll It is interior) interval, each expansion loop has at least one heating element and isolation coating thereon and is adapted on radial dimension Change so that cylindrical tube changes the thickness profile of the roll crown and Cast Strip of the casting surface of casting roll in expansion during casting；With And

C. metal delivery system, metal delivery system are located in above roll gap and can be formed casting pond, and casting pond is supported On the casting surface of casting roll, there is the side seal board adjacent with the end of roll gap, to limit casting pond.

Equipment can also include at least one sensor, and at least one sensor is located in the downstream of roll gap, can sense The thickness profile of Cast Strip and generate instruction Cast Strip thickness profile electric signal, in response to the electric signal received from sensor The radial dimension for controlling expansion loop, to control the roll crown of the casting surface of casting roll during casting manipulations.

In addition, may include control system, control system energy by controlling roll crown come the equipment for continuously casting strip It is enough the radial dimension for changing the expansion loop with isolation coating thereon in response to the electric signal received from sensor with When controlling the roll crown of the casting surface of casting roll during casting manipulations, controls casting roll driver and change the rotary speed of casting roll.

In addition, the equipment for controlling roll crown and continuously casting strip can also include at least one expansion loop, at least one A expansion loop be located in cylindrical tube corresponding to Cast Strip in the position for the center portion being formed in during casting in casting roll Place, it is at least one to expand isolation coating at least one heating element and thereon and be adapted for increasing on radial dimension Greatly so that cylindrical tube expands and in the thickness profile of the convexity and Cast Strip of the casting surface of change casting roll during casting.In addition, The equipment for controlling roll crown and continuously casting strip can also include control system, and control system can be in response to from least Electric signal that one sensor receives and change and the radial dimension of the expansion loop at the marginal portion interval of Cast Strip and correspond to The radial dimension of one or more expansion loops of the center portion of Cast Strip and the casting surface that casting roll is controlled during casting manipulations Roll crown when, control casting roll driver and change the rotary speed of casting roll.

Alternatively, roll crown is controlled and the equipment that continuously casts strip may include：

A. the casting roll of a pair of of phase reverse rotation, the casting roll of a pair of of phase reverse rotation have roll gap therebetween, can be from roll gap downward Cast Strip is delivered, there is each casting roll the casting surface formed by cylindrical tube, cylindrical tube to have no more than 80 mm of thickness Material selected from the group being made of copper and copper alloy optionally has the metal or metal alloy being coated on, and has Extend through multiple longitudinal water-flowing paths of cylindrical tube；

B. at least one expansion loop, at least one expansion loop in cylindrical tube corresponding to Cast Strip in the casting manipulations phase Between be formed at the position of the center portion in casting roll, at least one expansion loop have at least one heating element and thereon every It exhausted coating and is adapted for changing on radial dimension so that cylindrical tube changes the convexity of casting surface in expansion during casting With the thickness profile of Cast Strip；And

C. metal delivery system, metal delivery system are located in above roll gap, and can form casting pond, and casting pond is supported On the casting surface of casting roll, there is the side seal board adjacent with the end of roll gap, to limit casting pond.

Equipment can also include at least one sensor, and sensor can sense the thickness of the Cast Strip in the downstream for being located in roll gap Degree profile and generate instruction Cast Strip thickness profile electric signal, in response to the electric signal received from least one sensor The radial dimension for controlling expansion loop, to control the roll crown of the casting surface of casting roll during casting manipulations.

In addition, may include control system, control system energy by controlling roll crown come the equipment for continuously casting strip It is enough to change in response to the electric signal received from least one sensor with the one or more swollen of isolation coating thereon The radial dimension of tensioner ring simultaneously when the roll crown of the casting surface of control casting roll, controls casting roll driver and simultaneously changes during casting manipulations Become the rotary speed of casting roll.

In addition, the equipment for controlling roll crown and continuously casting strip can also include at least two expansion loops, at least two A expansion loop is in cylindrical tube and adjacent with cylindrical tube, and cylindrical tube is formed in casting roll in Cast Strip during casting manipulations Opposite end portions on marginal portion 450mm in interval.Each expansion loop is at least one heating element and thereon Isolation coating.Expansion loop with isolation coating thereon is adapted for increasing on radial dimension so that in the casting manipulations phase Between cylindrical tube expansion change casting roll casting surface roll crown and Cast Strip thickness profile.

In addition, the equipment for controlling roll crown and continuously casting strip can also include control system, control system can In the diameter for the one or more expansion loops for changing the center portion corresponding to Cast Strip in response to the electric signal received from sensor The radial dimension of the expansion loop at the marginal portion interval to size and with Cast Strip during casting manipulations to control the casting of casting roll Make a list face roll crown when, control casting roll driver and change the rotary speed of casting roll.

In each embodiment of equipment, expansion loop can be by the austenite stainless steel of such as 18/8 austenitic stainless steel At.Each expansion loop can be with the ring size between 50 to 150 millimeters；(for example, 70 millimeters).Each expansion loop can have Up to 200 millimeters of width；(for example, 83.5 millimeters).

In each embodiment of equipment, there is each expansion loop of isolation coating thereon to be adapted on radial dimension Increase so that expand and change the convexity of the casting surface of casting roll and the thickness profile of Cast Strip in cylindrical tube during casting.Often A expansion loop has can at least one heating element made of stainless steel, nickel or nickel alloy.One or more heating elements It can be as expected and around each expansion loop.Each expansion loop can provide the heating input up to 30kW；Preferably, The heating of at least 3kW inputs.

Again, in each embodiment of equipment, at least one sensor can sense the thickness profile and energy of Cast Strip The electric signal of enough thickness profiles for generating the Cast Strip for indicating can be positioned at downstream.Sensor can be positioned adjacent to pinch roller, Band passes through pinch roller after the casting.

The radial dimension of each expansion loop can be controlled by the electric signal in response to being received from sensor to realize casting The Crown control of the casting surface of roller.Furthermore, it is possible to which there is it by also changing in the electric signal in response to being received from sensor On isolation coating each expansion loop radial dimension when, control casting roll driver realized with changing the rotary speed of casting roll The Crown control of the casting surface of casting roll.

The radial direction of the expansion loop adjacent with the belt edge on the casting surface for being formed in casting roll can be controlled independently of one another Size.Furthermore, it is possible to which one or more expansion loops with the center portion corresponding to Cast Strip independently control and are formed in casting roll Casting surface on the adjacent expansion loop of belt edge radial dimension.

Again, in each latter embodiments of method and apparatus, the isolation coating of expansion loop is sufficiently thick, is made Expansion loop can be heated, with during casting manipulations in the case where the heat of minimum is transmitted to cylindrical tube such as institute's phase Hope the protuberance shape for making expansion loop expand and controlling casting roll.The isolation of at least 0.010 inch (such as 0.025 inch) applies on thickness Layer is effective.It is noted that isolation coating can be additionally applied to cylindrical tube, but for economy and validity, isolation Coating should be applied directly to expansion loop during the assembling of expansion loop and casting roll.

In each of method and apparatus in these last embodiments, expansion loop can also have across its water passage, To allow flow by the access in ring, and adjust the flow by those accesses.It can adjust and flow through expansion loop Water, so that expansion loop expansion or shrinkage on radial dimension simultaneously makes the diameter of cylindrical tube as it is expected increase or diminution in turn, with The protuberance shape of the casting surface of casting roll is controlled during operation.

Each aspect of the present invention will become aobvious from described in detail below, attached drawing and claim to those skilled in the art And it is clear to.

Description of the drawings

The present invention is described in greater detail with reference to the attached drawings, in attached drawing：

Fig. 1 is the diagrammatic side view of the dual roll casting machine of the disclosure；

Fig. 2 is that the amplifier section of the part for the dual roll casting machine for including Fig. 1 with check device for measuring belt profile is cut Face figure；

Fig. 2A is the schematic diagram of the part of the dual roll casting machine of Fig. 2；

Fig. 3 A are one portions in the casting roll longitudinally through Fig. 2 of the expansion loop with the center portion corresponding to Cast Strip The sectional view divided；

Fig. 3 B are the sectional views of the rest part on the online A-A of connection longitudinally through the casting roll of Fig. 3 A；

Fig. 4 is the end-view on the online 4-4 of casting roll of Fig. 3 A, and interior details are shown with dotted portion；

Fig. 5 is the sectional view on the online 5-5 of casting roll of Fig. 3 A；

Fig. 6 is the sectional view on the online 6-6 of casting roll of Fig. 3 A；

Fig. 7 is the sectional view on the online 7-7 of casting roll of Fig. 3 A；

Fig. 8 is one in the casting roll longitudinally through Fig. 2 of two expansion loops with the marginal portion interval with Cast Strip Partial section view；

Fig. 9 is the sectional view longitudinally through the part of the casting roll of the expansion loop with the marginal portion interval with Cast Strip；

Figure 10 be longitudinally through with the marginal portion interval with Cast Strip two expansion loops and corresponding to the center of Cast Strip The sectional view of one part in the casting roll of Fig. 2 of partial expansion loop；

Figure 11 is the sectional view of the expansion loop with water passage；

Figure 12 is diagram of increment (delta) the RTD temperature to the time；

Figure 13 is the diagram that average expansion circumstance temperature degree declines edge；

Figure 14 is diagram of the ring expansion to the temperature in casting machine of heating；And

Figure 15 is the side view and sectional view of the expansion loop with heating element.

Specific implementation mode

Referring now to figure 1,2 and 2A, it is illustrated that dual roll casting machine comprising master machine frame 10, master machine frame 10 is from work Factory site face stand and installed in the module in support roller box (roll cassette) 11 it is a pair of can phase reverse rotation casting roll 12. Casting roll 12 is mounted in roller box 11, with easily operated and mobile, as described below.Roller box 11 promotes the casting roll for being ready for casting 12 fast moving from installation position to the operable casting position as the unit in casting machine, and when casting roll 12 to be replaced It is ready to remove casting roll 12 from casting position.There is no the specific configurations of desired roller box 11, as long as it carries out promoting casting roll 12 Movement and positioning function, as described in this article.

Casting Equipment for continuously casting thin steel strip include it is a pair of can phase reverse rotation casting roll 12, a pair can phase derotation There is the casting roll 12 turned casting surface 12A, casting surface 12A to be positioned laterally to form roll gap 18 in-between.From steel ladle 13 will melt metal by metal delivery system is supplied to metal delivering mouth 17 (core mouth), and mouth 17 is located between casting roll 12, 18 top of roll gap.Being supported on the casting surface 12A of casting roll 12 above roll gap 18 is formed to the fusing metal of delivering Melt the casting pond 19 of metal.This casting pond 19 is in the end of casting roll 12 by a pair of of side seal board or side seal board 20 (in fig. 2 with point Line is shown) it is limited in casting area.Casting the upper surface (commonly referred to as " curved liquid " liquid level) in pond 19 can increase in delivering mouth Above 17 lower end so that the lower end of delivering mouth 17 is immersed in casting pond 19.Casting area includes the guarantor for casting 19 top of pond The addition of shield property atmosphere, to inhibit the oxidation of the fusing metal in casting area.

Steel ladle 13 is typically the conventional configurations being supported on the control tower 40 of rotation.In order to which metal delivers, steel ladle 13 It is located on the removable tundish 14 of casting position, to fill tundish 14 with fusing metal.Removable tundish 14 can position on cast gate jiggering 66, and tundish 14 can be heated to from by tundish 14 close to casting temperature by cast gate jiggering 66 The heating station (not shown) at place is transferred to casting position.The tundish guide rail of such as track 39 can be positioned under cast gate jiggering 66 Side, so that removable tundish 14 can be moved to casting position from heating station.

Removable tundish 14 can coordinate with sliding door 25, may be actuated by servo mechanism, with allow fusing metal from Tundish 14 is flowed by sliding door 25, and then passes through transition piece in refractory outlet shroud 15 to casting position or distribution Device 16.From distributor 16, molten metal flow to the delivering mouth 17 being located between the casting roll 12 of 18 top of roll gap.

Side seal board 20 can be made of refractory material, such as zirconium oxide graphite, graphite oxidation aluminium, boron nitride, boron nitridation Object zirconium oxide or other appropriate compounds.Side seal board 20 has face surface, face surface can be with melting in casting roll 12 and casting pond 19 Change metal physics contact.Side seal board 20 is mounted in side seal board keeping body (not shown), by such as hydraulic pressure or pneumatic linear actuator, servo The side seal board actuator (not shown) of mechanism or other actuators is removable, and side seal board 20 is taken to and is connect with 12 end of casting roll It closes.In addition, side seal board actuator can position side seal board 20 during casting.Side seal board 20 is during casting operation in casting roll 12 The upper melting tank for metal forms end-enclosed.

Fig. 1 shows that the dual roll casting machine of manufacture Cast Strip 21, Cast Strip 21 arrive pinch roll stand 31, pinch roll stand across guide table 30 31 include pinch roller 31A.Once leaving pinch roll stand 31, thin Cast Strip 21 can include across hot-rolling milling train 32, hot-rolling milling train 32 A pair of of working roll 32A and support roller 32B, formed can hot-rolling system from the gap for the Cast Strip 21 that casting roll 12 delivers, wherein Cast Strip 21 are reduced to desired thickness by hot-rolling system, by band, improve belt surface, and improve band flatness.Working roll 32A have with Across the relevant working surface of desired belt profile of working roll 32A.The Cast Strip 21 of hot-rolling then proceeds to output table 33, Can be at this by contacting with coolant and being cooled down by convection current and radiation, coolant is such as water, via (operating) water nozzle 90 or other appropriate components and supply.In any case, the Cast Strip 21 of hot-rolling can then pass through the second pinch roll stand 91 To provide the tension of Cast Strip 21, and then arrive reel 92.Cast Strip 21 before hot-rolling system can on thickness about 0.3 and 2.0 Between millimeter.

In the beginning of casting operation, the faulty band of short length is typically generated as casting condition is stable.It is building After vertical continuous casting, the slightly movement of casting roll 12 is opened and is then again brought up together, so that this guide end of Cast Strip 21 disconnects, is formed The clean head of Cast Strip 21 later.Imperfect material drops in waste material container 26, and waste material container 26 is in waste material container It is moved on guide rail.Waste material container 26 is located at the part that the waste material below casting machine receives in position and forms seal closure 27, As described below.Cover 27 is typically water cooling.At this point, usually suspending the water cooling to the side in cover 27 in midair downward from pivot 29 Coaming plate 28 swing in place, the clean end of Cast Strip 21 is directed in guide table 30, guide table 30 feeds Cast Strip 21 To pinch roll stand 31.Then coaming plate 28 is retracted into its suspension point, with allow Cast Strip 21 before it advances to guide table 30 12 lower section of casting roll is suspended in cover 27 in ring, and Cast Strip 21 engages a series of guiding roller bearings at guide table 30.

Overflow vessel 38 can be provided in 14 lower section of removable tundish, to receive the fusing that may spill from tundish 14 Material.As shown in fig. 1, overflow vessel 38 can move on track 39 or another guide rail so that overflow vessel 38 can To be placed in casting position below removable tundish 14 as expected.Furthermore, it is possible to be distributor 16 near distributor 16 Optional overflow vessel (not shown) is provided.

Seal closure 27 is formed by several wall sections separated, separated wall section be combined together at each sealed connection with Continuous cover wall is formed, continuous cover wall allows the atmosphere in control cover 27.In addition, waste material container 26 can and cover 27 be attached, Cover 27 is enable to support the protective atmosphere below casting roll 12 in casting position.Cover 27 includes the lower part portion of cover 27 Opening, lower cover part 44 in point, provide for waste material from the waste material container 26 that cover 27 advances to that waste material receives in position Outlet.Lower cover part 44 can downward extend as a part for cover 27, and opening is located in the waste material in waste material reception position 26 top of container.As used in the description herein and claim, waste material container 26, cover 27 and correlated characteristic are referred to " sealing ", " by sealing ", " make ... sealing " and " hermetically " may not be to prevent being fully sealed for leakage, but it is logical Often not perfect sealing is suitable for allowing control as expected in the case where leaking with some tolerables and supports cover 27 Interior atmosphere.

Rim portion 45 can surround the opening of lower cover part 44 and can be movably positioned in waste material container 26 Top can sealingly engage and/or be attached to the waste material container 26 in waste material reception position.Rim portion 45 can seal It is moved between position and clearance position, Rim portion 45 engages waste material container 26 in sealing station, and Rim portion 45 is in sky It is detached from waste material container 26 in gap position.Alternatively, casting machine or waste material container 26 may include elevation mechanism, by waste material container 26 are increased to and cover 27 sealing engagement of Rim portion 45, and waste material container 26 is then dropped to clearance position.Work as sealing When, the desired gas of cover 27 and waste material container 26 filled with such as nitrogen is carried with the amount and Cast Strip 21 that reduce the oxygen in cover 27 For protective atmosphere.

Cover 27 may include the upper collar portion 43 for supporting protective atmosphere, and upper collar portion 43 is close in casting position The lower section of casting roll 12.When casting roll 12 is in casting position, upper collar portion 43 is moved to extended position, in closing such as Fig. 2 Shown in space between the casing part 53 adjacent with casting roll 12 and cover 27.Upper collar portion 43 can be provided in cover 27 or It is adjacent with cover 27 and adjacent with casting roll 12, and can be moved by multiple actuator (not shown), such as servo mechanism, hydraulic press Structure, pneumatic mechanism and revolving actuator.

The internal water cooling as described below of casting roll 12 so that with 12 phase reverse rotation of casting roll, shell is set in casting surface 12A On because casting surface 12A with casting roll 12 it is each rotation and be moved to contact casting pond 19 contact and by casting pond 19.Shell Be brought at the roll gap 18 between casting roll 12 it is closer to each other together, produced with manufacturing the thin Cast Strip that is delivered downward from roll gap 18 Product 21.Thin cast strip product 21 at the roll gap 18 between casting roll 12 by hull shape at and by deliver downward and downward downstream, as above Described in text.

Referring now to Fig. 3 A-10, each casting roll 12 includes the cylindrical tube of the metal selected from the group being made of copper and copper alloy 120, optionally there is the metal or metal alloy (for example, chromium or nickel) coated thereon, to form casting surface 12A.Each circle Column tube 120 may be mounted between a pair of of minor axis component 121 and 122.Minor axis component 121 and 122 is respectively provided with end sections 127 and 128 (shown in Fig. 4-6), fit snugly in the end of cylindrical tube 120, to form casting roll 12.Cylindrical tube 120 by the end sections 127 and 128 for being respectively provided with flange portion 129 and 130 to be supported, to form inner chamber wherein 163, and between minor axis component 121 and 122 support assembled casting roll.

The exterior cylindrical surfaces of each cylindrical tube 120 are roller casting surface 12A.The radial thickness of cylindrical tube 120 can To be not more than 80 millimeters thicks.The thickness of pipe 120 can on thickness between 40 and 80 millimeters or on thickness Between 60 and 80 millimeters.

Each cylindrical tube 120 is provided with a series of longitudinal water-flowing paths 126, can be by passing through cylindrical tube 120 Circumferential thickness pass through bore slot hole and formed.The end in hole by fastener 171 then by being attached to short axle group The end sections 127 of part 121 and 122 and 128 end plug 141 closing.Across the cylindrical tube 120 with end plug 141 Thickness forms water-flowing path 126.The number of short axle fastener 171 and end plug 141 can select as expected.It can arrange end Portion plug 141, with from one end of casting roll 12 to the other end single-pass cooling in following minor axis components is provided in water passage, or Alternatively, more logical coolings are provided, wherein for example, connection flow passage 126, water is being returned to water directly or by chamber 163 Passing through three times for cooling water across adjacent flow path 126 is provided before supply.

It may be coupled to across the water-flowing path 126 of the thickness of cylindrical tube 120 and supplied with 163 concatenated water of chamber.Water is logical Road 126 may be coupled to water supply so that cooling water transit chamber 163 first and then pass through water supply passageway 126 to return Line, or first by water supply passageway 126 and then transit chamber 163 arrive the line of return.

Cylindrical tube 120 can be provided with circumference ladder 123 to form shoulder 124 in end, and the roller with casting roll 12 is cast It makes a list working portions of the face 12A between shoulder 124.Shoulder 124 is arranged as engagement side seal board 20 and limits casting during casting operation Pond 19, as described above.

Minor axis component 121 and 122 end sections 127 respectively and 128 typically sealingly engage cylindrical tube 120 end Portion, and with the water passage 135 and 136 radially extended shown in Fig. 4-6, water is delivered to and extends through cylindrical tube 120 water-flowing path 126.Radial Flow access 135 and 136 (for example, being arranged with screw thread) are connected at least some water-flowing paths 126 end is single-pass or mostly logical cooling system depending on cooling.It remaining end of water-flowing path 126 can be by such as spiral shell 141 closing of end plug of line, it is such as described in the case where water cooling is more way systems.

As being shown specifically as Fig. 7, cylindrical tube 120 can lead to array more as it is expected with the single-pass of water-flowing path 126 or It is positioned as annular array in the thickness of cylindrical tube 120.Water-flowing path 126 is connected in one end of casting roll 12 by radial port 160 It is connected to cyclic annular gallery (gallery) 140 and and then is connected to the Radial Flow accesses of end sections 127 in minor axis component 121 135, and cyclic annular gallery 150 is connected to by radial port 161 in the other end of casting roll 12 and is connected to minor axis component 121 in turn In end sections 128 Radial Flow access 136.In the water that one end of roller 12 is supplied by a cyclic annular gallery 140 or 150 The other end that whole water-flowing paths 126 arrives roller 12 can be flowed through parallel in once-through, and in cylindrical tube 120 It is flowed out by radial passage 135 or 136 and another cyclic annular gallery 150 or 140 at the other end.Direction stream can be supplied by (a plurality of) It is inverted as expected to the appropriate connection with the line of return.It alternatively or additionally, can be optionally from radial passage 135 and 136 Optional water logical circulation road 126 in connection or obstruction water-flowing path 126, to provide more logical arrangements, such as threeway.

Minor axis component 122 can be longer than minor axis component 121.As shown in Figure 3B, minor axis component 122 can be provided with flow Two set of port 133 and 134.Flow port 133 and 134 can be connect with rotary water current connector 131 and 132, and water is by revolving Turn flow connector 131 and 132 and pass axially through minor axis component 122 to be delivered to casting roll 12 and delivered from it.In operation, cold But water is passed through by extending respectively through the end sections 127 of minor axis component 121 and 122 and 128 radial passage 135 and 136 Pass through to the water-flowing path 126 in cylindrical tube 120 and from it.Minor axis component 121 coordinates with tube axial 137, to provide end The fluid communication between central chamber in the radial passage 135 and casting roll 12 of part 127.Minor axis component 122 and axially spaced-apart pipe Cooperation, by the radial direction in the end sections 122 of the central waterpipe 138 being in fluid communication with central chamber 163 and minor axis component 122 The circular flow pipeline 139 that access 136 is in fluid communication separates.Central waterpipe 138 and cyclic annular waterpipe 139 are capable of providing cooling Water goes to casting roll 12 and flowing in and out from casting roll 12.

In operation, the cooling water of entrance can be supplied to looped pipeline 139 by supply line 131 by port 133, And then be in fluid communication with radial passage 136, gallery 150 and water-flowing path 126, and then pass through gallery 140, radial passage 135, tube axial 137, central chamber 163 and central waterpipe 138 return to outflow line 132 by flow port 134.It substitutes Ground, the flow to and from casting roll 12 can be as it is expected on the direction of reversion.Flow port 133 and 134 may be coupled to Water supplies and the line of return so that water can flow to water in the cylindrical tube 120 of casting roll 12 on any direction as desired Logical circulation road 126 and from flowing.Depending on the direction of flowing, cooling water flows before or after flowing through water-flowing path 126 Dynamic transit chamber 163.

Each cylindrical tube 120 can be provided at least one expansion loop with isolation coating thereon.Such as institute in Fig. 8 Show, cylindrical tube 120 can be provided with 350 at least two expansion loop 210 of isolation coating respectively having thereon, be spaced inwardly In opposite end portions in the 450mm of the marginal portion for the Cast Strip of cylindrical tube 120 formed during casting manipulations.Figure 9 show longitudinally through with the expansion loop 210 of isolation coating 350 and the marginal portion interval of Cast Strip thereon and having The sectional view of the part of the casting roll of heating element 370.

Alternatively, as shown in Figure 10, there are at least two expansion loops 210 of isolation coating 350 thereon to be spaced in circle In the opposite end portions in the 450mm of the marginal portion of Cast Strip of column tube 120, the marginal portion of Cast Strip is in casting manipulations Period is in the opposite end portions of casting roll, and the additional expansion loop 220 with isolation coating 330 thereon is located in circle In column tube 120 at the position for forming the center portion corresponding to Cast Strip on the casting surfaces during casting.

In another alternative, if returned to as shown in Fig. 3 A, have the expansion loop 220 of isolation coating 330 thereon can be with Be located in cylindrical tube 120, corresponding to Cast Strip in the center portion being formed in during casting on the casting surface of casting roll Position at.

As illustrated in figs. 8-10, the expansion loop with isolation coating thereon can be positioned in cylindrical tube and and cylinder Shape pipe is adjacent, and with the marginal portion interval of Cast Strip.Each expansion loop can have the ring size between 50 and 150mm；(example Such as 70mm).Similarly, it is positioned to correspond to the isolation coating having thereon in the center portion formed during casting of Cast Strip One or more expansion loops can have ring size between 50 and 150mm；(such as 70mm).

With each expansion loop of the marginal portion interval of Cast Strip with isolation coating can with up to 200mm (for example, Width 83.5mm).Similarly, the one of the isolation coating having thereon being located in during casting in the center portion of Cast Strip A or multiple expansion loops can have the width up to 200mm (for example, 83.5mm).

The casting of casting roll can be controlled by adjusting the radial dimension of at least one expansion loop inside cylindrical tube Make a list face convexity deformation.There can be at least one of the coating of isolation thereon by adjusting the temperature of expansion loop to control The radial dimension of expansion loop.In turn, can with the radius of expansion loop and and then the convexity of casting surface of casting roll control Cast Strip Thickness profile.Since the circumferential thickness of cylindrical tube is fabricated to the thickness no more than 80mm, the convexity of casting surface can be rung It should be deformed in change of the expansion loop on radial dimension.

Each expansion loop with isolation coating thereon is adapted for increasing on radial dimension so that cylindrical tube is being cast Expansion changes the thickness profile of the convexity and Cast Strip of casting surface during making.Power line 222 and control line 224 are from slip ring (slip Ring) 240 each expansion loop is extended to.Power line 222 feeds electrical power to expansion loop.Control line 224 provides temperature feedback, so Temperature in use is fed back to control the power of expansion loop afterwards.

As shown in Figure 11, each expansion loop can have water passage 340 therein, wherein water that can flow through.It can The expansion of expansion loop is adjusted to control flow.

Each expansion loop can be electrically heated, and be increased on radial dimension.As shown in figure 15, each expansion loop can have At least one heating element positioned as desired, effectively to heat ring.For this purpose, expansion loop 300 is on right side With heating element 310, and heating element 320 has heating element on left side.Each expansion loop can provide up to The heating of 30kW inputs；Preferably, at least 3kW.The power generated by the increase on radial dimension will be applied on cylindrical tube, be made Obtain the thickness profile that cylindrical tube expansion changes the convexity and Cast Strip of casting surface.In order to pass through the radial dimension for controlling expansion loop Desired thickness profile is realized with cast rotating is controlled, and strip thickness profile sensor 71 can be positioned at downstream, to detect casting The thickness profile 21 of band, as shown in Fig. 2 and Fig. 2A.Tape thickness sensor 71 is typically provided in roll gap 18 and pinch roller 31A Between, to provide directly controlling for casting roll 12.Sensor can be X-ray meter or other appropriate devices, being capable of the period Property or continuously directly measure across band width thickness profile.Alternatively, multiple non-contact sensors are across 21 cloth of Cast Strip It sets at roller bearing platform 30, and the combination of the thickness measure from multiple positions across Cast Strip 21 is handled by controller 72, with band Occurs either periodically or continuously determine thickness profile.The thickness of Cast Strip can be occurs either periodically or continuously determined from this data as expected Spend profile 21.

The radial dimension of each expansion loop can be independently controlled with the radial dimension of other one or more expansion loops. In the belt edge of casting roll and the radial dimension of each expansion loop of the isolation coating having thereon adjacent thereto can each other solely Site control.Furthermore, it is possible to which the one or more of isolation coating having thereon with the center portion corresponding to Cast Strip expand Ring is independently controlled in the belt edge of casting roll and the radial dimension of expansion loop adjacent thereto.Sensor 71 generates instruction Cast Strip Thickness profile signal.Each expansion loop with isolation coating thereon is controlled according to the signal generated by sensor Radial dimension controls the roll crown of the casting surface of casting roll during casting manipulations in turn.

Furthermore, it is possible to also change the radial dimension of expansion loop, Jin Er in the electric signal 71 in response to being received from sensor When controlling the roll crown of the casting surface of casting roll during casting manipulations, control casting roll driver is to change the rotary speed of casting roll.

It has been found that isolation coating is necessary to controlling the heat transfer from expansion loop to casting roll.The test of progress shows With isolation coating thereon, the heat transfer from expansion loop to casting roll is minimum during casting, and swollen Tensioner ring can reach desired temperature and expand, and reach desired section strip thickness profile in turn, commercially to control casting It makes a list the convexity in face.

In order to illustrate, Figure 12 shows the test carried out on expansion loop with and without isolation coating. The isolation coating of the zirconium oxide of 8% stabilized with yttrium oxide obtains 0.025 inch by the outside of plasma spray coating to expansion loop The isolation coating of degree.Each expansion loop has a section of the 85mm of approximation on the width of casting roll, in shrink-fit to expansion loop. Each casting roll section has across its water passage.Water is supplied at approximate 15psi, and flow is between 8.6 and 8.9gpm Variation.Inlet water temperature degree is 68 °F.Separated test is carried out under 50% power and under 100% power.As shown in Figure 12, When being tested under 50% power, expansion loop leads to 54 DEG C of peak value delta temperature.And with the expansion of isolation coating thereon Ring leads to 90 DEG C of peak value delta temperature, i.e. 67% increase on peak value delta temperature.As shown in Figure 12, in the test phase Between, heating failure of the uncoated expansion loop under 100% power；And the expansion loop with isolation coating thereon is 100% Test under power leads to approximate 130 DEG C of peak value delta temperature.

Figure 13 shows the diagram that average expansion circumstance temperature degree declines edge.Edge declines the thickness for being associated with Cast Strip.Such as Shown in Figure 13, edge decline is rendered as every time in response to the change in the expansion loop temperature of heating.As temperature increases, expansion Ring expands；The Cast Strip thickness of the edge of casting roll reduces, and edge declines increase.

Figure 14 shows diagram of the ring expansion to the temperature coated with the expansion loop for completely cutting off coating of heating.Expansion loop is located at For casting roll nearby and in casting roll, casting roll is provided through its water passage, and water passed through in normal casting operation among flow It is dynamic.The expansion loop of coating is heated to 120 °F from 85.6 °F.It is of short duration be maintained at 120 °F after, have isolation coating expansion Ring is heated to 160 °F and 200 °F.As demonstrated, when the expansion loop of coating is by 115 °F of heating, 100 μm are achieved over Size expansion.As described, because going to the heat transfer of casting roll, these results will in the case of uncoated expansion loop It is impossible.The expansion of expansion loop is directly related to the temperature that expansion loop can be heated to.As described, be coated with every The expansion loop of exhausted coating can be rapidly heated, and realize efficient temperature.In this way, at least 0.010 inch on thickness (such as 0.025 inch) isolation coating be necessary for controlling or eliminating the heat transfer from expansion loop to casting roll.

In each in these embodiments of method and apparatus, expansion loop can also have across its water passage, To allow the flow by the access in ring, and adjust the flow by those accesses.It is swollen to make as expected to adjust flow The diameter of tensioner ring simultaneously makes the diameter of cylindrical tube increase or reduce in turn, and the shape of casting roll is controlled during operation.

Although the principle and pattern about the operation of specific embodiment explanation and illustration book, it should be understood, however, that this Invention can with institute detailed explanation and description differently time, without departing from its spirit or scope.

Claims (53)

1. it is a kind of by controlling roll crown come the method for continuously casting strip, it the described method comprises the following steps：

A. casting machine is assembled, the casting machine has the casting roll of a pair of of phase reverse rotation, and the casting roll of the pair of phase reverse rotation is in-between With roll gap, Cast Strip can be delivered downward from the roll gap, each casting roll has the casting surface formed by cylindrical tube, described Cylindrical tube has the material selected from the group being made of copper and copper alloy no more than 80 mm of thickness, optionally has and is coated in Metal or metal alloy thereon, and with the multiple longitudinal water-flowing paths for extending through the cylindrical tube；

B. at least two expansion loops are located in it is in the cylindrical tube and adjacent with the cylindrical tube, and in the Cast Strip The marginal portion being formed in during casting manipulations in the opposite end portions of the casting roll 450mm in be spaced, it is each swollen Tensioner ring has at least one heating element and isolation coating thereon and is adapted for increasing on radial dimension so that in the phase of casting Between cylindrical tube expansion change the casting roll casting surface roll crown and the Cast Strip thickness profile；

C. metal delivery system is assembled, the metal delivery system can form casting pond, and the casting pond is supported on the casting roll The casting surface above the roll gap, have the side seal board adjacent with the end of the roll gap, to limit the casting Pond；And

D. it is controlled described swollen in response at least one of the digital signal received from least one sensor or analog signal The radial dimension of tensioner ring, to control the roll crown of the casting surface of the casting roll during the casting manipulations.

2. the method according to claim 1 for continuously casting strip by controlling roll crown, further comprising the steps of：

E. at least one sensor is positioned, at least one sensor can sense at least one of following property：

The temperature of the expansion loop；

The thickness profile of the Cast Strip in downstream；

The Cast Strip is in the local thickness limited at point close to the Cast Strip edge；

Casting roller surface convexity during the casting manipulations；

Radial casting roll dilation close at the restriction point at the Cast Strip edge；

And generate the signal of at least one of digital signal or analog signal or the above-mentioned property of the instruction Cast Strip.

3. the method according to claim 1 for continuously casting strip by controlling roll crown, further comprising the steps of：

E. corresponding to the center portion on being formed in the casting roll during casting of the Cast Strip and by least one expansion loop It is located in the cylindrical tube, each expansion loop has at least one heating element and isolation coating thereon and is adapted for Change on radial dimension so that change in the expansion of the cylindrical tube during casting the convexity of the casting roll casting surface and The thickness profile of the Cast Strip.

4. the method according to claim 2 for continuously casting strip by controlling roll crown, further comprising the steps of：

F. corresponding to the center portion on being formed in the casting roll during casting of the Cast Strip and by least one expansion loop It is located in the cylindrical tube, each expansion loop has at least one heating element and isolation coating thereon and is adapted for Change on radial dimension so that change in the expansion of the cylindrical tube during casting the convexity of the casting roll casting surface and The thickness profile of the Cast Strip.

5. the method according to claim 1 for continuously casting strip by controlling roll crown, further comprising the steps of：

E. water passage is provided in each expansion loop, wherein water can flow through the water passage, and control the flow Move and adjust the expansion of the expansion loop.

6. the method according to claim 3 for continuously casting strip by controlling roll crown, further comprising the steps of：

F. water passage is provided in each expansion loop, wherein water can flow through the water passage, and control the flow Move and adjust the expansion of the expansion loop.

7. the method according to claim 1 for continuously casting strip by controlling roll crown, wherein the expansion loop Heating element be made of stainless steel, nickel or nickel alloy.

8. the method according to claim 2 for continuously casting strip by controlling roll crown, further comprising the steps of：

F. in digital signal or at least one of the analog signal in response to being received from least one sensor and controlling has The radial dimension of the expansion loop of isolation coating thereon during the casting manipulations to control the casting table of the casting roll When the roll crown in face, control casting roll driver is to change the rotary speed of the casting roll.

9. the method according to claim 4 for continuously casting strip by controlling roll crown, further comprising the steps of：

G. change in digital signal or at least one of analog signal in response to being received from least one sensor With isolation coating thereon and with the radial dimension of the expansion loop at the marginal portion interval of the Cast Strip and corresponding In the radial dimension with each expansion loop for completely cutting off coating thereon of the center portion of the Cast Strip to make in the casting When controlling the roll crown of the casting surface of the casting roll during industry, control casting roll driver is to change the rotation speed of the casting roll Degree.

10. the method according to claim 1 for continuously casting strip by controlling roll crown, wherein having thereon Completely cut off coating and there is the ring size between 50 and 150mm with each expansion loop at the marginal portion interval of the Cast Strip.

11. the method according to claim 3 for continuously casting strip by controlling roll crown, wherein having thereon Completely cut off coating and there is the ring size between 50 and 150mm with each expansion loop at the marginal portion interval of the Cast Strip, and Corresponding to the Cast Strip center portion with thereon isolation coating each expansion loop with the ring between 50 and 150mm Size.

12. the method according to claim 1 for continuously casting strip by controlling roll crown, wherein having thereon Completely cut off coating and there is the width up to 200mm with each expansion loop at the marginal portion interval of the Cast Strip.

13. the method according to claim 3 for continuously casting strip by controlling roll crown, wherein having thereon Completely cut off coating and there is the width up to 200mm with each expansion loop at the marginal portion interval of the Cast Strip, and corresponds to Each expansion loop with isolation coating thereon of the center portion of the Cast Strip is with the width up to 200mm.

14. the method according to claim 1 for continuously casting strip by controlling roll crown, wherein having thereon Completely cut off coating and provides the heating input up to 30kW with each expansion loop at the marginal portion interval of the Cast Strip.

15. the method according to claim 3 for continuously casting strip by controlling roll crown, wherein having thereon Completely cut off coating and provide the heating input up to 30kW with each expansion loop at the marginal portion interval of the Cast Strip, and is corresponding The heating input up to 30kW is provided in each expansion loop for the isolation coating of the center portion of the Cast Strip having thereon.

16. according to claim 1 by controlling roll crown come the method that continuously casts strip, wherein can be independently of Control the roll crown of the casting surface of the casting roll and control with thereon isolation coating and with the marginal portion of the Cast Strip The radial dimension of each expansion loop at interval.

17. it is according to claim 3 by control roll crown come the method for continuously casting strip, can be independently of control The roll crown of the casting surface of the casting roll and controlling wherein have isolation coating thereon and with the marginal portion of the Cast Strip Each expansion loop at interval and corresponding to the Cast Strip center portion the isolation coating having thereon each expansion loop Radial dimension.

18. it is according to claim 4 by controlling roll crown come the method for continuously casting strip, further include following step Suddenly：

G. in response to being received from least one sensor digital signal or at least one of analog signal change institute When stating roll crown of the radial dimension of expansion loop to control the casting surface of the casting roll during the casting manipulations, institute is controlled The position for stating casting roll has each of isolation coating thereon swollen to change the horizontal distance between the casting roll axis center line Tensioner ring corresponds at least one of center portion or the marginal portion of Cast Strip property.

19. it is a kind of by controlling roll crown come the method for continuously casting strip, it the described method comprises the following steps：

A. casting machine is assembled, there is the casting machine casting roll of a pair of of phase reverse rotation, the casting roll to have roll gap therebetween, can be from institute It states roll gap and delivers Cast Strip downward, there is each casting roll the casting surface formed by cylindrical tube, the cylindrical tube to have little In the material selected from the group being made of copper and copper alloy of 80 mm of thickness, optionally there is the metal or metal coated on it Alloy, and with the multiple longitudinal water-flowing paths for extending through the cylindrical tube；

It b. will be at least one swollen corresponding to the center portion of the Cast Strip being formed in during casting manipulations in the casting roll Tensioner ring is located in the cylindrical tube, and isolation of at least one expansion loop at least one heating element and thereon applies It layer and is adapted for changing on radial dimension so that change the casting surface in the expansion of the cylindrical tube during casting The thickness profile of convexity and the Cast Strip；

C. metal delivery system is assembled, the metal delivery system can form casting pond, and the casting pond is supported on the casting roll The casting surface above the roll gap, have the side seal board adjacent with the end of the roll gap, to limit the casting pond；

D. controlled in response at least one of the digital signal received from least one sensor or analog signal it is described to The radial dimension of the expansion loop of the few one isolation coating having thereon, to control the casting roll during the casting manipulations The roll crown of casting surface.

20. it is according to claim 19 by controlling roll crown come the method for continuously casting strip, further include following step Suddenly：

E. at least one sensor is positioned, at least one sensor can sense at least one of following property：

The temperature of at least one expansion loop；

The thickness profile of the Cast Strip in downstream；

The Cast Strip is in the local thickness limited at point close to the Cast Strip edge；

Casting roller surface convexity during the casting manipulations；

Radial casting roll dilation close at the restriction point at the Cast Strip edge；

And generate the signal of at least one of digital signal or analog signal or the above-mentioned property of the instruction Cast Strip.

21. it is according to claim 19 by controlling roll crown come the method for continuously casting strip, further include following step Suddenly：

E. water passage is provided at least one expansion loop, wherein water can flow through the water passage, and control The water flowing and the expansion for adjusting at least one expansion loop.

22. according to claim 19 by controlling roll crown come the method that continuously casts strip, wherein it is described at least One heating element is made of stainless steel, nickel or nickel alloy.

23. it is according to claim 20 by controlling roll crown come the method for continuously casting strip, further include following step Suddenly：

F. change in digital signal or at least one of analog signal in response to being received from least one sensor The radial dimension of the expansion loop of at least one isolation coating having thereon is with described in the control during the casting manipulations When the roll crown of the casting surface of casting roll, control casting roll driver is to change the rotary speed of the casting roll.

24. according to claim 19 by controlling roll crown come the method that continuously casts strip, wherein it is described at least One expansion loop with isolation coating thereon is with the ring size between 50 and 150mm.

25. according to claim 19 by controlling roll crown come the method that continuously casts strip, wherein it is described at least One expansion loop with isolation coating thereon is with the width up to 200mm.

26. according to claim 19 by controlling roll crown come the method that continuously casts strip, wherein it is described at least The expansion loop of one isolation coating having thereon provides the heating input up to 30kW.

27. the method according to claim 19 for continuously casting strip by controlling roll crown, wherein can be independent In the roll crown for the casting surface for controlling the casting roll control corresponding to the Cast Strip center portion have thereon every Each expansion loop of exhausted coating.

28. it is according to claim 20 by controlling roll crown come the method for continuously casting strip, further include following step Suddenly：

F. change in digital signal or at least one of analog signal in response to being received from least one sensor The radial dimension of at least one expansion loop is convex with the roller for controlling the casting surface of the casting roll during the casting manipulations When spending, the position of the casting roll is controlled, to change the horizontal distance between the casting roll axis center line, there is isolation thereon to apply Each expansion loop of layer corresponds at least one of the center portion of Cast Strip property.

29. a kind of equipment continuously casting strip by controlling roll crown, the equipment include：

A. the casting roll of a pair of of phase reverse rotation, the casting roll of the pair of phase reverse rotation have roll gap therebetween, can be from the roll gap Cast Strip is delivered downward, and there is each casting roll the casting surface formed by cylindrical tube, the cylindrical tube to have no more than 80 millis The material selected from the group being made of copper and copper alloy of meter Hou Du optionally has the metal or metal alloy being coated on, And with the multiple longitudinal water-flowing paths for extending through the cylindrical tube；

B. at least two expansion loop, at least two expansion loop be located in the cylindrical tube and with the cylindrical tube It is adjacent, and in the marginal portion of the Cast Strip being formed in during casting manipulations in the opposite end portions of the casting roll Interval in 450mm, each expansion loop have at least one heating element and isolation coating thereon and are adapted in radial ruler Very little upper change so that the cylindrical tube changes the roll crown of the casting surface of the casting roll and the casting in expansion during casting The thickness profile of band；

C. metal delivery system, the metal delivery system are located in above the roll gap and can form casting pond, the casting Pond is supported on the casting surface of the casting roll, has the side seal board adjacent with the end of the roll gap, to limit the casting Pond.

30. it is according to claim 29 by controlling roll crown come the equipment for continuously casting strip, further include：

D. at least one sensor can sense at least one of following property：

The temperature of the expansion loop；

The thickness profile in the downstream for being located in the roll gap of the Cast Strip；

The Cast Strip is in the local thickness limited at point close to the Cast Strip edge；

Casting roller surface convexity during the casting manipulations；

Radial casting roll dilation close at the restriction point at the Cast Strip edge；

And the signal that at least one of digital signal or analog signal or the above-mentioned property of instruction can be generated, in response to from At least one sensor received signal and the radial dimension for controlling the expansion loop, to be controlled during the casting manipulations Make the roll crown of the casting surface of the casting roll.

31. it is according to claim 29 by controlling roll crown come the equipment for continuously casting strip, further include：

D. at least one expansion loop, at least one expansion loop is in the cylindrical tube, corresponding to the Cast Strip in institute The center portion being formed in during stating casting manipulations in the casting roll, each expansion loop is at least one heating element and thereon Isolation coating and be adapted for changing on radial dimension so that change the casting in the expansion of the cylindrical tube during casting Make a list face roll crown and the Cast Strip thickness profile.

32. it is according to claim 30 by controlling roll crown come the equipment for continuously casting strip, further include：

E. at least one expansion loop, at least one expansion loop is in the cylindrical tube, corresponding to the Cast Strip in institute The center portion being formed in during stating casting manipulations in the casting roll, each expansion loop is at least one heating element and thereon Isolation coating and be adapted for changing on radial dimension so that the cylindrical tube changes the casting in expansion during casting Make a list face roll crown and the Cast Strip thickness profile.

33. it is according to claim 30 by controlling roll crown come the equipment for continuously casting strip, further include：

E. control system, can change in response to the electric signal received from least one sensor with thereon every Exhausted coating and with the radial dimension of the expansion loop at the marginal portion interval of the Cast Strip to be controlled during the casting manipulations When making the roll crown of the casting surface of the casting roll, controls casting roll driver and change the rotary speed of the casting roll.

34. it is according to claim 32 by controlling roll crown come the equipment for continuously casting strip, further include：

F. control system, can change in response to the electric signal received from least one sensor with thereon every Exhausted coating and with the radial dimension of the expansion loop at the marginal portion interval of the Cast Strip and corresponding to the center of the Cast Strip The radial dimension of partial at least one expansion loop with isolation coating thereon during the casting manipulations to control When making the roll crown of the casting surface of the casting roll, controls casting roll driver and change the rotary speed of the casting roll.

35. the equipment according to claim 29 for continuously casting strip by controlling roll crown, wherein with thereon Isolation coating and there is ring size between 50 and 150mm with each expansion loop at the marginal portion interval of the Cast Strip.

36. the equipment according to claim 31 for continuously casting strip by controlling roll crown, wherein with thereon Isolation coating and there is ring size between 50 and 150mm with each expansion loop at the marginal portion interval of the Cast Strip, and And corresponding to each expansion loop with isolation coating thereon of the center portion of the Cast Strip between 50 and 150mm Ring size.

37. the equipment according to claim 29 for continuously casting strip by controlling roll crown, wherein with thereon Isolation coating and with each expansion loop at the marginal portion interval of the Cast Strip have up to 200mm width.

38. the equipment according to claim 31 for continuously casting strip by controlling roll crown, wherein with thereon Isolation coating and there is the width up to 200mm with each expansion loop at the marginal portion interval of the Cast Strip, and it is corresponding In the Cast Strip center portion with thereon isolation coating each expansion loop with the width up to 200mm.

39. the equipment according to claim 29 for continuously casting strip by controlling roll crown, wherein with thereon Isolation coating and with each expansion loop at the marginal portion interval of the Cast Strip provide up to 30kW heating input.

40. the equipment according to claim 31 for continuously casting strip by controlling roll crown, wherein with thereon Isolation coating and provide the heating up to 30kW with each expansion loop at the marginal portion interval of the Cast Strip and input, and it is right The each expansion loop for the isolation coating of the center portion of Cast Strip described in Ying Yu having thereon provides the heating input up to 30kW.

41. it is according to claim 29 by control roll crown come the equipment for continuously casting strip, can be independently of control Make the roll crown of the casting surface of the casting roll and control wherein have isolation coating thereon and with the edge part of the Cast Strip Divide the radial dimension of each expansion loop at interval.

42. the equipment according to claim 31 for continuously casting strip by controlling roll crown, wherein can be independent In the roll crown for the casting surface for controlling the casting roll control with isolation coating thereon and with the edge part of the Cast Strip Divide each expansion loop for completely cutting off coating of each expansion loop at interval and the center portion corresponding to the Cast Strip having thereon Radial dimension.

43. the equipment according to claim 29 for continuously casting strip by controlling roll crown, wherein the heating Element is made of stainless steel, nickel or nickel alloy.

44. the equipment according to claim 31 for continuously casting strip by controlling roll crown, wherein the heating Element is made of stainless steel, nickel or nickel alloy.

45. a kind of equipment continuously casting strip by controlling roll crown, the equipment include：

A. the casting roll of a pair of of phase reverse rotation, the casting roll of the pair of phase reverse rotation have roll gap therebetween, can be from the roll gap Cast Strip is delivered downward, and there is each casting roll the casting surface formed by cylindrical tube, the cylindrical tube to have no more than 80 millis The material selected from the group being made of copper and copper alloy of meter Hou Du optionally has the metal or metal alloy being coated on, And with the multiple longitudinal water-flowing paths for extending through the cylindrical tube；

B. at least one expansion loop, at least one expansion loop are being cast in the cylindrical tube corresponding to the Cast Strip It is formed in during affected industry at the position of the center portion in the casting roll, at least one expansion loop has at least one add Thermal element and isolation coating thereon, at least one expansion loop are adapted for changing on radial dimension so that the cylinder Shape pipe changes the thickness profile of the convexity and the Cast Strip of casting surface in expansion during casting；

C. metal delivery system, the metal delivery system are located in above the roll gap, and can form casting pond, the casting Pond is supported on the casting surface of the casting roll, has the side seal board adjacent with the end of the roll gap, to limit the casting Pond.

46. it is according to claim 45 by controlling roll crown come the equipment for continuously casting strip, further include：

D. at least one sensor can sense at least one of following property：

The temperature of at least one expansion loop；

The thickness profile in the downstream for being located in the roll gap of the Cast Strip；

The Cast Strip is in the local thickness limited at point close to Cast Strip center；

Casting roller surface convexity during the casting manipulations；

Radial casting roll dilation close at the restriction point in Cast Strip center；

And the signal that at least one of digital signal or analog signal or the above-mentioned property of instruction can be generated, in response to from At least one sensor received signal and the radial dimension for controlling at least one expansion loop, to make in the casting The roll crown of the casting surface of the casting roll is controlled during industry.

47. it is according to claim 46 by controlling roll crown come the equipment for continuously casting strip, further include：

E. control system can change described at least one in response to the electric signal received from least one sensor When roll crown of the radial dimension of expansion loop to control the casting surface of the casting roll during the casting manipulations, casting roll is controlled Driver and the rotary speed for changing the casting roll.

48. the equipment according to claim 45 for continuously casting strip by controlling roll crown, wherein corresponding to institute At least one expansion loop with isolation coating thereon of the center portion of Cast Strip is stated with the ring between 50 and 150mm Size.

49. the equipment according to claim 45 for continuously casting strip by controlling roll crown, wherein corresponding to institute At least one expansion loop with isolation coating thereon of the center portion of Cast Strip is stated with the width up to 200mm.

50. the equipment according to claim 45 for continuously casting strip by controlling roll crown, wherein corresponding to institute At least one expansion loop offer for stating the isolation coating of the center portion of Cast Strip having thereon is defeated up to the heating of 30kW Enter.

51. the equipment according to claim 45 for continuously casting strip by controlling roll crown, wherein can be independent In the roll crown for the casting surface for controlling the casting roll control corresponding to the Cast Strip center portion have thereon every Each expansion loop of exhausted coating.

52. according to claim 45 by controlling roll crown come the equipment that continuously casts strip, further include it is described extremely Water passage in a few expansion loop, wherein water can flow through the water passage, and control the water flowing and adjust The expansion of at least one expansion loop.

53. according to claim 45 by controlling roll crown come the equipment that continuously casts strip, wherein it is described at least One heating element is made of stainless steel, nickel or nickel alloy.