Copper-clad steel continuous casting production line and steel wire conveying device used for copper-clad steel continuous casting production line

Abstract

The utility model discloses a copper-clad steel continuous casting production line and a steel wire conveying device used for the copper-clad steel continuous casting production line, and the device comprises a front end pushing mechanism which is arranged in front of the inlet end of a continuous casting furnace and is constructed to be capable of pulling a machined steel wire to move in the continuous casting advancing direction in the mode that first radial acting force is applied to the machined steel wire; the rear end pull-out mechanism is arranged behind the outlet end of the continuous casting furnace and is constructed to be capable of pulling the processed steel wire to move along the continuous casting advancing direction in a manner of applying a second radial acting force to the processed steel wire coated with the copper layer; wherein the front-end pushing mechanism is configured to pull the machined steel wire to move in a stepping mode in the continuous casting advancing direction, and the rear-end pulling-out mechanism is matched with the front-end pushing mechanism. According to the solution provided by the invention, the risk that the steel wire is easy to break and crack is relieved and even eliminated, and the production yield and efficiency of continuous casting of the copper-clad steel are improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of metal continuous casting composite, in particular to a copper clad steel continuous casting production line and a steel wire conveying device for the copper clad steel continuous casting production line, which is specifically used for driving the steel wire to run to convey the steel wire and pull out the copper clad steel billet from the continuous casting furnace. BACKGROUND

[0002] In the process of producing various steel products, there are two methods of using liquid metal to solidify and form, namely traditional mold casting method and continuous casting method. Among them, the principle of continuous casting is to continuously pour molten metal into the crystallizer and continuously pull it out from the other end of the crystallizer, which can obtain materials of any length or specific length.

[0003] Taking copper clad steel material (also known as copper clad steel) as an example, it is also called copper clad steel bimetallic composite material, which is a composite conductor processed by special process of copper and steel. The conductor has high strength, excellent elasticity, large thermal resistance and high permeability of steel, and good electrical conductivity and excellent corrosion resistance of copper, and is widely used in electrical and electronic fields.

[0004] In the production process of copper clad steel material, a driving device or traction device is arranged at the outlet end of the continuous casting furnace, and the copper clad steel is pulled out from the continuous casting furnace through the driving device. The driving power required by the driving device is large, and there is a risk that the steel wire will be easily pulled apart, which may cause low yield and thus affect the production efficiency. In addition, during the process of pulling out the steel wire from the continuous casting furnace, there may be a situation that the pulling out is not successful, which will also affect the production efficiency.

[0005] Therefore, it is urgent to provide a new steel wire conveying device for a copper clad steel continuous casting production line to at least partially alleviate or solve the above-mentioned problems and defects existing in the prior art. INVENTION CONTENTS

[0006] One purpose of the present disclosure is to alleviate or eliminate the above-mentioned defects existing in the prior art copper clad steel continuous casting production technology and production line, and to provide a copper clad steel continuous casting production line and a steel wire conveying device for the copper clad steel continuous casting production line.

[0007] The present disclosure provides a steel wire conveying device for a copper clad steel continuous casting production line, the copper clad steel continuous casting production line comprising a continuous casting furnace with a crystallizer assembly, characterized in that the steel wire conveying device comprises:

[0008] a front end pushing mechanism arranged in front of the inlet end of the continuous casting furnace and configured to pull the processed steel wire to move in the continuous casting direction by applying a first radial force to the processed steel wire;

[0009] a rear-end pulling-out mechanism provided at a rear of the outlet end of the continuous casting furnace and configured to pull the processed steel wire in the continuous casting travel direction in a manner of applying a second radial force to the processed steel wire coated with a copper layer;

[0010] wherein the front-end pushing mechanism is configured to pull the processed steel wire in the continuous casting travel direction in a step-by-step manner;

[0011] and wherein the rear-end pulling-out mechanism is configured to pull the processed steel wire therebetween in a step-by-step manner totally synchronized with the step-by-step manner of the front-end pushing mechanism, and the first radial force and the second radial force are respectively set so that the front-end pushing mechanism and the rear-end pulling-out mechanism can firmly clamp the processed steel wire, or the rear-end pulling-out mechanism is configured to pull the processed steel wire in a continuous manner generally synchronized with the step-by-step manner of the front-end pushing mechanism, and the first radial force is set so that the front-end pushing mechanism can firmly clamp the processed steel wire, and the second radial force is 10%-40% smaller than the first radial force, or the rear-end pulling-out mechanism is configured to substantially not apply a force in the continuous casting travel direction to the processed steel wire for only maintaining a position of the processed steel wire in a vertical direction perpendicular to the continuous casting travel direction.

[0012] Herein, "continuous pulling" refers to that a driving force of the front-end pushing mechanism is continuously outputted to be transmitted to a longitudinal (length direction) pulling force of the processed steel wire via the first radial force, and "step-by-step pulling" refers to that a driving force of the front-end pushing mechanism is outputted in a step-by-step manner or periodically intermittently provided to be transmitted to a longitudinal pulling force (longitudinal direction, i.e. length direction of the steel wire) of the processed steel wire via the second radial force. In addition, herein, the expression "front-end pushing mechanism" is intended to facilitate understanding that it is located in front of the continuous casting furnace and used to push / drive the steel wire into the continuous casting furnace, and the expression "rear-end pulling-out mechanism" is intended to facilitate understanding that it is located at the rear of the continuous casting furnace and used to pull the steel wire out of the furnace, and the two expressions are not used to mean that only a pushing force or only a pulling force is applied. The "front-end pushing mechanism" and the "rear-end pulling-out mechanism" should be understood as driving mechanisms or components for guiding the movement of the steel wire in the continuous casting travel direction as they are.

[0013] It is generally believed that the copper clad steel continuous casting process (such as horizontal continuous casting method) is developed from the single metal continuous casting process (such as copper material) and applied to the copper clad steel continuous casting production. In the single metal continuous casting process, the metal billet is pulled out from the continuous casting furnace by a step motor drive device, which does not need to consider the feeding process and its power supply (which can be roughly understood as not needing to drive the steel wire to be processed into the continuous casting furnace in front of the furnace), and the step motor drive device for pulling out the billet can even be equipped with the functions of pulling, stopping and retreating the billet. The copper clad steel continuous casting process is developed from the single metal continuous casting process, and the important difference between the two is that the feeding action of guiding / driving the steel wire to be processed into the continuous casting furnace and the billet pulling action after the furnace need to be considered. The copper clad steel continuous casting process still generally uses the step system for pulling out the billet after the furnace, which provides the time required for the copper clad layer to solidify in the continuous casting furnace and performs the pull / stop cycle of the metal billet. Therefore, the step motor drive device, such as a step motor, is very suitable for taking the initiative to drive the power source and pulling out the copper clad steel billet in a step-by-step manner after the furnace. At the same time, since the continuous casting furnace front and / or the continuous casting furnace rear in the copper clad steel continuous casting production line may need to drive the steel material to continuously advance (for example, the uncoiling and straightening in the front process may need continuous power output to ensure the processing effect of its own link), there must be a certain degree of inconsistency between the upstream and downstream power systems in the production line.

[0014] However, in the practice of copper clad steel continuous casting production, it is often found that although the aforementioned step power system provides the time required for the copper clad layer to solidify and obtains a copper clad steel product with better performance, a certain probability or proportion of the copper clad steel wire produced after a series of processes and downstream of the continuous casting furnace will have defects such as the copper clad steel wire being pulled apart, cracked or slightly or even significantly penetrated by copper (i.e. copper material penetrating into the core of the steel wire formed). Since the entire processing process involves many factors, and the characteristics of the continuous casting production line also do not allow for immediate inspection when some problems are found, and the crystallization link in the continuous casting is basically not real-time monitored from the outside due to its ultra-high temperature environment in the furnace, it is difficult to determine the causes and factors of the above defects and their influence.

[0015] The steel wire conveying device of each embodiment of the present disclosure is based on the following deep insights obtained from the experience and practice of the metal continuous casting process technology, its implementation and the production line and production process.

[0016] Although the characteristics and quality of the initial raw material of the steel wire, the process and parameters of each process of the metal continuous casting process, and the process parameters of the continuous casting furnace such as temperature control, etc. can cause the aforementioned copper-coated steel wire to be broken or cracked or copper penetration defects, the performance of the steel wire under high temperature conditions is weakened and cannot well withstand the net tension (i.e. the tension applied by the stepper motor plus the undesirable resistance applied to the steel wire by the pre-furnace motor) applied to the steel wire during the execution of the pull / stop cycle by the stepper motor, the inconsistency of the pre-furnace and post-furnace driving forces, and the characteristics of the stepper tension output by the post-furnace driving device or post-furnace pulling mechanism, which can cause the tension (or tensile stress) on the steel wire to be relatively large at the time of pulling, which is one of the key factors leading to the breaking or cracking of the steel wire and the copper penetration (a large amount of copper penetrating into the steel material) phenomenon. Therefore, in the copper-coated steel continuous casting process, by appropriately matching the driving mode of the pre-furnace driving force and the post-furnace tension applied by the driving device, the tension or stress on the steel wire in the furnace can be relieved.

[0017] To this end, by appropriately improving or configuring the process of applying force and power transmission to the processed steel wire by the driving device (such as a motor) located at the front and rear (i.e. upstream and downstream) of the continuous casting furnace (crystallizer), it will help to reduce the maximum tensile stress on the steel wire under high temperature conditions in the furnace, thereby relieving or even eliminating the above defects. Specifically, both embodiments proposed in the present disclosure appropriately set the active traction mechanism in front of the continuous casting furnace (upstream) and the traction mechanism behind the furnace as a driven continuous traction mechanism or another stepper traction mechanism that synchronously drives the steel wire to advance, so that the driving force of the driven traction behind the furnace is less than or equal to the driving force of the pre-furnace stepper driving mechanism applied to the steel wire, thereby to some extent eliminating or relieving the stress or tension on the steel wire in the furnace, thereby relieving or avoiding the risk of breaking or cracking of the steel wire.

[0018] According to some embodiments of the present disclosure, the front-end pushing mechanism includes a first stepper driver and a first transmission assembly, the first transmission assembly includes a first rotating wheel and a second rotating wheel, a first passage segment for the processed steel wire to pass through is arranged between the first rotating wheel and the second rotating wheel, and the first driver is used to drive at least one of the first rotating wheel and the second rotating wheel to rotate;

[0019] The rear-end pulling-out mechanism includes a second stepper driver and a second transmission assembly, the second transmission assembly includes a third rotating wheel and a fourth rotating wheel, a second passage segment for the processed steel wire to pass through is arranged between the third rotating wheel and the fourth rotating wheel, and the second driver is used to drive at least one of the third rotating wheel and the fourth rotating wheel to rotate;

[0020] The first runner and the second runner are configured to apply a first radial force to the processed steel wire to generate a first friction force acting on the processed steel wire, and the third runner and the fourth runner are configured to apply a second radial force to the processed steel wire to generate a second friction force acting on the processed steel wire, and the first friction force and the second friction force are substantially matched with each other.

[0021] The first runner and the second runner are configured to apply a first radial force to the processed steel wire to generate a first friction force acting on the processed steel wire, and the third runner and the fourth runner are configured to apply a second radial force to the processed steel wire to generate a second friction force acting on the processed steel wire, and the first friction force and the second friction force are substantially matched with each other.

[0022] Thus, the traction force applied to the steel wire at both ends of the steel wire in the continuous casting process or in the continuous casting furnace under high temperature conditions can be kept consistent, thereby at least ensuring that the tension or stress of the steel wire at the link with weaker performance against tensile stress is greatly reduced or even eliminated, and since this link is also a key process link in copper-coated steel production, this implementation can significantly minimize the risk of the steel wire being broken, cracked, and copper penetration caused by cracking.

[0023] According to some embodiments of the present disclosure, the first transmission assembly includes a first rigid force applying component connected to at least one of the first runner and the second runner, and the second transmission assembly includes a second rigid force applying component connected to at least one of the third runner and the fourth runner, and the first rigid force applying component and the second rigid force applying component are configured to be able to apply an adjustable constant radial force to the connected runner, thereby keeping the first friction force and the second friction force substantially equal.

[0024] According to some embodiments of the present disclosure, the first runner and the second runner and the third runner and the fourth runner are arranged such that the central axis of the first passage section defined between the first runner and the second runner and the central axis of the second passage section defined between the third runner and the fourth runner are aligned with each other. Herein, the alignment as referred to herein can be understood as an alignment within the range of several millimeters, i.e., only a deviation of up to millimeter order between the central axes is allowed.

[0025] According to some preferred embodiments of the present disclosure, the first transmission assembly and the second transmission assembly are further respectively provided with a fine adjustment mechanism for manually fine-adjusting the horizontal position and / or the vertical position of the central axis of the first channel segment and the second channel segment, so as to avoid the moment generated by the first friction force and the second friction force acting on the processed steel wire from causing the processed steel wire to be subjected to shearing stress.

[0026] With this more preferred embodiment, the stress on the steel wire in the furnace can be well resolved, the quality risks such as the steel wire being broken or cracked or copper penetration can be maximally avoided, and the overall advancing speed of the processed steel wire can be improved to improve the production efficiency, or at least such a possibility is provided. Moreover, this way can also resolve the adverse effect of the steel wire vibration on the concentricity control caused by the non-synchronization of the driving mechanisms at the front and rear ends of the continuous casting furnace.

[0027] According to some alternative embodiments of the present disclosure, the front-end pushing mechanism comprises a first driver in step-by-step mode and a first transmission assembly, the first transmission assembly comprises a first rotating wheel and a second rotating wheel, a first channel segment for the processed steel wire to pass through is arranged between the first rotating wheel and the second rotating wheel, and the first driver is used to drive at least one of the first rotating wheel and the second rotating wheel to rotate;

[0028] The rear-end pulling-out mechanism comprises a second driver in continuous mode and a second transmission assembly, the second transmission assembly comprises a third rotating wheel and a fourth rotating wheel, a second channel segment for the processed steel wire to pass through is arranged between the third rotating wheel and the fourth rotating wheel, and the second driver is used to drive at least one of the third rotating wheel and the fourth rotating wheel to rotate;

[0029] Among them, the first rotating wheel and the second rotating wheel are configured to apply a first radial force to the processed steel wire relative to each other to generate a first friction force acting on the processed steel wire, and the third rotating wheel and the fourth rotating wheel are configured to apply a second radial force to the processed steel wire relative to each other to generate a second friction force acting on the processed steel wire;

[0030] And wherein the first transmission assembly comprises a first rigid force applying component connected with at least one of the first rotating wheel and the second rotating wheel, and the second transmission assembly comprises a second flexible force applying component connected with at least one of the third rotating wheel and the fourth rotating wheel, the second flexible force applying component is configured to apply a variable force tending to cause one of the third rotating wheel and the fourth rotating wheel to approach the other, the variable force decreases with the approach of both the first rotating wheel and the second rotating wheel, so that the second friction force is 10%-40% smaller than the first friction force.

[0031] Among them, optionally, the second flexible force applying component is a compression spring arranged along the connecting line direction of the third rotating wheel and the fourth rotating wheel

[0032] According to some preferred embodiments of the present disclosure, the steel wire conveying device further comprises a controller configured to be capable of simultaneously sending the same step-by-step driving control signal to the first driver and the second driver.

[0033] The first transmission assembly comprises a first rigid force applying component connected to at least one of the first runner and the second runner, and the second transmission assembly comprises a second rigid force applying component connected to at least one of the third runner and the fourth runner, the first rigid force applying component and the second rigid force applying component are configured to be capable of applying an adjustable constant radial force to the connected runner, so as to keep the first friction force and the second friction force substantially equal.

[0034] According to some preferred embodiments of the present disclosure, the output frequency of the step-by-step second driver is in the range of 60-130 cycles / minute, each cycle is an output cycle comprising an output time and a pause time, and the pitch of the driven steel wire advancing corresponding to each cycle output time is in the range of 0.3-2.5 cm.

[0035] The present disclosure also provides a copper clad steel continuous casting production line, comprising:

[0036] A continuous casting furnace with a crystallizer assembly;

[0037] The steel wire conveying device for the copper clad steel continuous casting production line as described in any one of the preceding embodiments;

[0038] A cutting mechanism, a straightening mechanism and a polishing mechanism sequentially arranged upstream of the continuous casting furnace;

[0039] A cooling device located downstream of the continuous casting furnace and between the rear end pulling-out mechanism.

[0040] On the basis of common general knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily, i.e. to obtain each preferred example of the present disclosure.

[0041] The positive progress effect of the present disclosure is that:

[0042] The copper clad steel continuous casting production line and the steel wire conveying device for the copper clad steel continuous casting production line according to the present disclosure at least to some extent help to alleviate or even eliminate the risk of the steel wire being easily broken and cracked, and improve the production yield and production efficiency of the copper clad steel continuous casting. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 The overall schematic diagram of the copper clad steel production line is schematically shown, which comprises the steel wire conveying device according to the preferred embodiments of the present disclosure.

[0044] LEGEND OF THE FIGURES:

[0045] 1, front end pushing mechanism; 11, first rotating wheel; 12, second rotating wheel;

[0046] 2, rear end pulling-out mechanism; 21, third rotating wheel; 22, fourth rotating wheel;

[0047] 3, continuous casting furnace; 4, cutting mechanism; 5, straightening mechanism; 6, polishing mechanism; 7, cooling device; 8, steel wire to be processed;

[0048] 1', uncoiling driving mechanism; 1", straightening driving mechanism DETAILED DESCRIPTION

[0049] The preferred embodiments of the present application will be further described in detail below with reference to the accompanying drawings. The following description is exemplary and not limiting of the present application, and any other similar cases also fall within the scope of protection of the present application.

[0050] In the following detailed description, directional terms such as "left", "right", "up", "down", "front", "back", etc. are used with reference to the orientation described in the drawings. The components of the embodiments of the present application can be placed in various different directions, and the directional terms are used for the purpose of example and are not limiting.

[0051] First embodiment

[0052] Reference Figure 1 As shown in the drawings, the steel wire conveying device of a preferred embodiment of the present application is used in a copper-coated steel continuous casting production line, wherein the copper-coated steel continuous casting production line includes a continuous casting furnace 3 with a crystallizer assembly.

[0053] Specifically, the steel wire conveying device includes:

[0054] The steel wire conveying device includes:

[0055] A front end pushing mechanism 1 is arranged in front of the inlet end of the continuous casting furnace and is configured to pull the steel wire to be processed to move in the continuous casting direction by applying a first radial force to the steel wire to be processed;

[0056] A rear end pulling-out mechanism 2 is arranged behind the outlet end of the continuous casting furnace and is configured to pull the steel wire to be processed to move in the continuous casting direction by applying a second radial force to the steel wire to be processed coated with a copper layer;

[0057] The front end pushing mechanism 1 is configured to pull the steel wire to be processed to move in the continuous casting direction in a step-by-step manner;

[0058] And wherein said rear-end pulling mechanism 2 is configured to draw the processed steel wire movement in a continuous manner generally synchronized with said step-wise manner of said front-end pushing mechanism 1, and the first radial force is set so that said front-end pushing mechanism 1 is able to firmly grip the processed steel wire, and the second radial force is 10%-40% smaller than the first radial force.

[0059] Wherein said front-end pushing mechanism 1 comprises a first driver in a step-wise manner and a first transmission assembly, the first transmission assembly comprises a first rotating wheel 11 and a second rotating wheel, a first channel segment for the processed steel wire to pass through is arranged between the first rotating wheel 11 and the second rotating wheel, and the first driver is used to drive at least one of the first rotating wheel 11 and the second rotating wheel to rotate;

[0060] Said rear-end pulling mechanism 2 comprises a second driver in a continuous manner and a second transmission assembly, the second transmission assembly comprises a third rotating wheel 21 and a fourth rotating wheel 22, a second channel segment for the processed steel wire to pass through is arranged between the third rotating wheel 21 and the fourth rotating wheel 22, and the second driver is used to drive at least one of the third rotating wheel 21 and the fourth rotating wheel 22 to rotate;

[0061] Wherein the first rotating wheel 11 and the second rotating wheel are configured to apply a first radial force to the processed steel wire relative to each other to generate a first friction force acting on the processed steel wire, and the third rotating wheel 21 and the fourth rotating wheel 22 are configured to apply a second radial force to the processed steel wire relative to each other to generate a second friction force acting on the processed steel wire;

[0062] And wherein the first transmission assembly comprises a first rigid force applying component connected to at least one of the first rotating wheel 11 and the second rotating wheel, and the second transmission assembly comprises a second flexible force applying component connected to at least one of the third rotating wheel 21 and the fourth rotating wheel 22, the flexible force applying component is configured to apply a variable force tending to cause one of the third rotating wheel 21 and the fourth rotating wheel 22 to approach the other, and the variable force decreases as the first rotating wheel 11 and the second rotating wheel both approach, so that the second friction force is 10%-40% smaller than the first friction force.

[0063] Wherein in some specific examples, the rotating wheels are configured with grooves, and correspondingly, the channel segment for the processed steel wire 8 to pass through is defined by the space between the grooves of the corresponding rotating wheels to press out the steel wire.

[0064] The first embodiment of the present disclosure sets the active traction mechanism before (upstream of) the continuous casting furnace, while the traction mechanism after the furnace is set as a continuous traction mechanism driven by the passive traction, so that the passive traction driving force after the furnace is kept smaller than or equal to the driving force exerted on the steel wire by the step drive mechanism before the furnace, thus to some extent resolving or alleviating the stress or tension on the steel wire in the furnace, and thus to alleviate or avoid the risk of the steel wire being broken or cracked.

[0065] More specifically, for example, the flexible force applying component can be an elastic member, and more preferably a compression spring arranged along the connecting line direction of the third rotating wheel 21 and the fourth rotating wheel 22, one end of the compression spring being connected to the third rotating wheel 21 or the fourth rotating wheel 22, and the other end being detachably attached to the optional spring mounting position of the first transmission assembly according to the desired compression amount of the compression spring.

[0066] Preferably, the output frequency of the step drive second driver is in the range of 60-130 cycles / minute, each cycle being an output cycle including an output time and a pause time, and the pitch of the steel wire driven corresponding to each cycle output time being in the range of 0.3-2.5 cm.

[0067] Thus, it is ensured that the second radial force and the first friction force generated thereby are not too small to lose the traction effect of the passive traction after the furnace, while it is also ensured that the force is not too large to always have the necessary slip ability to provide a buffer for the incomplete synchronization of the driving before and after the furnace in the steel wire conveying process, and to some extent alleviate the steel wire vibration caused by the different steps of the traction force before and after the furnace, for example, to some extent limit the maximum amplitude of the vibration.

[0068] In the present disclosure, for example, the first rotating wheel 11 and the second rotating wheel 12 can be arranged side by side in an up-down manner, or arranged in pairs without being aligned along the vertical axis, and of course the number of the first rotating wheel 11 and the second rotating wheel 12 can be the same or different, as long as they can provide the appropriate effect of guiding, traction and limiting the processed steel wire 8 and exert appropriate force on the steel wire. The possible arrangement of the third rotating wheel 21 and the fourth rotating wheel 22 is similar to that of the first rotating wheel 11 and the second rotating wheel 12, and thus is not described here.

[0069] For example, the typical examples of the driver are relatively low-cost continuous motors and step motors, and the second driver can also be a motor. The possible way to control the step drive driver can be, for example, to control the rotating driving force to maintain a preset time length in each output cycle, or to control the rotating driving force to drive the processed steel wire 8 to advance a preset length. More specifically, the step drive of the steel wire advancement can be achieved, for example, by means of timing control, detection of the length of the processed steel wire 8 advancement or the angle of rotation of the output shaft of the driver.

[0070] Second embodiment

[0071] Still referring to Figure 1 A preferred embodiment of the steel wire conveying device of the present disclosure is used in a copper clad steel continuous casting production line, wherein the copper clad steel continuous casting production line comprises a continuous casting furnace 3 with a crystallizer assembly.

[0072] Specifically, the steel wire conveying device comprises:

[0073] a front end pushing mechanism 1 arranged in front of the inlet end of the continuous casting furnace and configured to pull the processed steel wire to move in the continuous casting direction by applying a first radial force to the processed steel wire;

[0074] a rear end pulling mechanism 2 arranged behind the outlet end of the continuous casting furnace and configured to pull the processed steel wire to move in the continuous casting direction by applying a second radial force to the processed steel wire coated with a copper layer;

[0075] wherein the front end pushing mechanism 1 is configured to pull the processed steel wire to move in the continuous casting direction in a step-by-step manner, the rear end pulling mechanism 2 is configured to pull the processed steel wire therebetween in a step-by-step manner completely synchronized with the front end pushing mechanism 1, and the first radial force and the second radial force are respectively set to enable the front end pushing mechanism 1 and the rear end pulling mechanism 2 to firmly clamp the processed steel wire.

[0076] wherein, optionally, the front end pushing mechanism 1 comprises a first driver in a step-by-step manner and a first transmission assembly, the first transmission assembly comprising a first rotating wheel 11 and a second rotating wheel, a first channel segment for the processed steel wire to pass through being arranged between the first rotating wheel 11 and the second rotating wheel, the first driver being used to drive at least one of the first rotating wheel 11 and the second rotating wheel to rotate;

[0077] the rear end pulling mechanism 2 comprises a second driver in a step-by-step manner and a second transmission assembly, the second transmission assembly comprising a third rotating wheel 21 and a fourth rotating wheel 22, a second channel segment for the processed steel wire to pass through being arranged between the third rotating wheel 21 and the fourth rotating wheel 22, the second driver being used to drive at least one of the third rotating wheel 21 and the fourth rotating wheel 22 to rotate;

[0078] wherein the first rotating wheel 11 and the second rotating wheel are configured to apply the first radial force to the processed steel wire relative to each other to generate a first friction force acting on the processed steel wire, the third rotating wheel 21 and the fourth rotating wheel 22 are configured to apply the second radial force to the processed steel wire relative to each other to generate a second friction force acting on the processed steel wire, and the first friction force and the second friction force substantially match each other.

[0079] In particular, the second embodiment of the present disclosure provides a step traction mechanism capable of synchronously driving the steel wire to travel, which is arranged in front of (upstream) or behind (downstream) the continuous casting furnace. The technical effect of the second embodiment is superior to the first embodiment and significantly superior to the solution provided by the prior art in terms of eliminating or alleviating the stress or tension suffered by the steel wire in the furnace, thereby alleviating or avoiding the risk of the steel wire being pulled apart or cracked.

[0080] According to the second embodiment, the traction force applied to the steel wire at both ends of the steel wire in the continuous casting process or in the continuous casting furnace under high temperature conditions can always be kept consistent, thereby at least ensuring that the tension or stress borne by the steel wire at the link with weaker resistance to tensile stress is greatly reduced or even eliminated. Since this link is also a key process link in copper-clad steel production, this implementation can significantly minimize the risk of the steel wire being pulled apart, cracked, and copper penetration (a large amount of copper penetrating into the steel material) caused by cracking. It can be said that, under the premise of properly implementing the solution, the phenomenon or defect of the steel wire being pulled apart, cracked, and copper penetration caused by cracking in this key process link (also the most fragile link of the steel wire) in copper-clad steel production will be eliminated or completely avoided.

[0081] According to a more preferred configuration, the first transmission assembly includes a first rigid force applying component connected to at least one of the first and second pulleys 11, 12, and the second transmission assembly includes a second rigid force applying component connected to at least one of the third and fourth pulleys 21, 22, the first and second rigid force applying components being configured to apply an adjustable constant radial force to the connected pulleys, thereby keeping the first and second friction forces substantially equal.

[0082] According to a more preferred configuration, the first and second pulleys 11, 12 and the third and fourth pulleys 21, 22 are arranged such that the central axis of the first passage segment defined between the first and second pulleys 11, 12 and the central axis of the second passage segment defined between the third and fourth pulleys 21, 22 are aligned with each other.

[0083] According to a more preferred configuration, the first and second transmission assemblies are further respectively provided with a fine adjustment mechanism for manually fine-tuning the horizontal and / or vertical position of the central axis of the first and second passage segments, so as to avoid the torque generated by the first and second friction forces acting on the processed steel wire causing the processed steel wire to be subjected to shear stress.

[0084] According to a more preferred configuration, the steel wire conveying device further includes a controller configured to simultaneously send the same step drive control signal to the first and second drives;

[0085] The first transmission assembly includes a first rigid force applying component connected to at least one of the first rotary wheel 11 and the second rotary wheel, and the second transmission assembly includes a second rigid force applying component connected to at least one of the third rotary wheel 21 and the fourth rotary wheel 22, and the first rigid force applying component and the second rigid force applying component are configured to be able to apply an adjustable constant radial force to the connected rotary wheel, so as to keep the first friction force and the second friction force substantially equal.

[0086] Through the above-mentioned more optimal configurations, the stress of the steel wire in the furnace can be well eliminated or even highly reliably eliminated, the quality risks such as breakage, cracking or copper penetration of the steel wire are avoided to the greatest extent, and the overall advancing speed of the processed steel wire is improved to improve the production efficiency, or at least the possibility of improving the overall advancing speed of the processed steel wire is provided. This is because in the solution that the forces applied to the steel wire by the traction driving mechanisms at the front and rear ends of the continuous casting furnace are out of sync, increasing the overall advancing speed of the processed steel wire will directly cause the steel wire to bear greater tension or stress caused by the mismatch of driving forces between the stepping motor performing the pull-stop cycle and the continuous motor cooperating therewith, and the increase in the advancing speed of the steel wire may also require an increase in the temperature of the copper liquid in the continuous casting furnace to process the copper cladding process, which causes the temperature of the steel wire to rise, all of which will increase the product quality risk while improving the production rate, i.e., the aforementioned quality risks such as breakage, cracking or copper penetration of the steel wire. In contrast, the second embodiment of the present disclosure does not increase the product quality risk of breakage, cracking or copper penetration of the steel wire due to the increase in production rate, so as to provide the potential or potential possibility of improving the overall advancing speed of the processed steel wire to improve the production efficiency, which further embodies the technical advantages that the second embodiment of the present disclosure can achieve.

[0087] Moreover, this way can also eliminate the adverse effects of the vibration of the steel wire caused by the out-of-sync driving mechanisms at the front and rear ends of the continuous casting furnace on the control of the concentricity.

[0088] According to a further more optimal configuration of the second embodiment, the output frequency of the stepping second driver is in the range of 60-130 cycles / minute, each cycle is an output period including an output time and a pause time, and the pitch of the driven steel wire corresponding to each cycle output time is in the range of 0.3-2.5 cm.

[0089] Although, as explained above, the second embodiment of this disclosure can almost completely eliminate quality risks such as wire breakage, cracking, or copper infiltration caused by the stress on the steel wire in the furnace through the above-described preferred configuration, there may still be a certain degree of inconsistency in the upstream and downstream power systems from the perspective of the entire production line. This is because the upstream and downstream stages of the copper-clad steel continuous casting production line may still require continuous driving of the steel wire (for example, the traction components used in the straightening process of the upstream stage usually require continuous driving of the steel wire). Another insight based on the second embodiment of this disclosure is that, compared with the steel wire being processed in the continuous casting furnace, the steel wire in other stages of the production line has significantly stronger tensile strength and is less prone to breakage or cracking. At the same time, even if breakage or cracking occurs, it is significantly easier to detect / observe and deal with in a timely manner. Therefore, from the perspective of the entire production line, it has significant technical advantages compared with other existing solutions and the first embodiment.

[0090] Taking the straightening process (straightening mechanism 5) of the previous stage as an example, the traction component used is a continuous motor that needs to apply a large radial force to firmly clamp the steel wire and continuously drive the steel wire forward. Since there is usually a distance of at least one meter or about this order of magnitude between the straightening motor and the stepper-type front-end push mechanism 1 in front of the continuous casting furnace in the production line, as long as the pitch of the stepper motor driving the steel wire forward is not too large (within the pitch range described above), then the excessive distance of the steel wire traveled by the straightening motor continuously driving the steel wire forward, that is, the pause time of the stepping cycle executed by the front-end push mechanism 1 in front of the continuous casting furnace, is approximately the amount of the steel wire driven forward by the straightening motor, which can be completely accommodated within this production line distance between the straightening mechanism 5 and the front-end push mechanism 1 in front of the furnace. Since this excessive distance or length of steel wire accounts for a very small proportion of the total length of the steel wire between the straightening mechanism 5 and the front-end pushing mechanism 1, the asynchrony of this upstream and downstream driving mechanism will at most produce very inconspicuous or very small steel wire vibration or sway. Moreover, the impact of the steel wire portion transmitted to the continuous casting furnace will be even smaller and negligible. At the same time, it eliminates the adverse effects of steel wire sway on the service life of the crystallizer and the instability of the steel wire entry position on the concentricity of the billet.

[0091] For example, refer to Figure 1 As shown, upstream of the continuous casting furnace 3, there are sequentially arranged a cutting mechanism 4 (uncoiling mechanism), a straightening mechanism 5, and a polishing mechanism 6. Before the steel wire 8 to be processed enters the continuous casting furnace 3, the steel wire 8 to be processed is cut, straightened, and polished to ensure that the steel wire 8 to be processed meets the casting requirements of copper-clad steel and to ensure the uniformity of the copper layer on the outside of the steel wire as much as possible.

[0092] The front-end driving mechanism 1, the front-end driving mechanism 1 and the front-end driving mechanism 1 can be arranged in the front of the continuous casting furnace 3, and the front-end driving mechanism 1 can be arranged in the front of the continuous casting furnace 3.

[0093] The front-end driving mechanism 1, the front-end driving mechanism 1 and the front-end driving mechanism 1 can be arranged in the front of the continuous casting furnace 3, and the front-end driving mechanism 1 can be arranged in the front of the continuous casting furnace 3.

[0094] When the front-end driving mechanism 1 is arranged between the cutting mechanism 4 and the straightening mechanism 5, and the front-end driving mechanism 1 is arranged between the straightening mechanism 5 and the polishing mechanism 6, a total of three driving mechanisms including the front-end driving mechanism 1 and the front-end driving mechanism 1 can be arranged upstream of the continuous casting furnace in the continuous casting production line, and the rear-end pulling mechanism 2 is arranged one, the three driving mechanisms can pull the processed steel wire 8 along the continuous casting direction to move the continuous casting furnace 3, the rear-end pulling mechanism 2 pulls the processed steel wire 8 from the continuous casting furnace 3, drives the processed steel wire 8 to move in the way of three pushing and one pulling, and can also drive the processed steel wire 8 to stably move between the adjacent two processes / components in the front of the furnace, maintain the stability of the movement, and ensure the processing precision of the cutting (uncoiling), straightening, polishing and other processes.

[0095] The front-end driving mechanism 1 can include a first transmission assembly, which can guide and limit the processed steel wire 8, and can accurately position the processed steel wire 8 in the cutting, straightening, polishing and other processes, which helps to improve the processing precision.

[0096] In some embodiments, the cooling device 7 and the rear-end pulling mechanism 2 are sequentially arranged downstream of the continuous casting furnace 3. The rear-end pulling mechanism 2 is arranged downstream of the cooling device 7, and the processed steel wire 8 is cooled after being coated with a copper layer. The pre-set tension of the rear-end pulling mechanism 2 is applied to the cooled processed steel wire 8, and the structural stability of the cooled processed steel wire 8 is better, which reduces the structural influence of the rear-end pulling mechanism 2 on the processed steel wire 8. The rear-end pulling mechanism 2 is next to the cooling device 7, which shortens the distance between the rear-end pulling mechanism 2 and the continuous casting furnace 3, ensures that the pre-set tension can stably pull out the processed steel wire 8 in the continuous casting furnace 3, and the position of the rear-end pulling mechanism 2 is reasonable, and the stress of the processed steel wire 8 is reasonable.

[0097] The structure of the cutting mechanism 4, the straightening mechanism 5, the polishing mechanism 6, the continuous casting furnace 3 and the cooling device 7 is not limited, and parts for copper-coated steel horizontal continuous casting can be used. It should be noted that the cutting mechanism 4, the straightening mechanism 5 and the polishing mechanism 6 can be used with the front driving mechanism.

[0098] According to a further preferred embodiment, the uncoiling driving mechanism 1' arranged at the cutting mechanism 4, the straightening driving mechanism 1" arranged at the straightening mechanism 5 and the front end pushing mechanism 1 located at the upstream position of the continuous casting furnace 3 as described in detail above can be different in specific configuration, wherein the straightening driving mechanism 1" at the straightening mechanism 5 clamps the steel wire with greater radial force, and the clamping force at this position can be significantly greater than the force exerted by the uncoiling driving mechanism 1' at the cutting mechanism. Figure 1 Among the radial forces exerted at each position of the production line as shown schematically in the figure, the radial force F3 can be designed according to the uncoiled steel wire raw material, and F1, F2 and F4 can all be set relatively large so that the traction assembly can completely transmit the output torque to the steel wire to push it to travel.

[0099] The copper-coated steel continuous casting production line and the steel wire conveying device for the copper-coated steel continuous casting production line according to the present disclosure help to alleviate or even eliminate the quality risk caused by the easy breaking and cracking of the steel wire, and help to improve the production yield and production efficiency of the copper-coated steel continuous casting.

[0100] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the protection scope of the present application.

Claims

1. A steel wire conveying device for a copper clad steel continuous casting line comprising a continuous casting furnace with a mould assembly, characterized in that, The steel wire conveying device comprises: a front end pushing mechanism arranged in front of the inlet end of the continuous casting furnace and configured to move the processed steel wire in the continuous casting advancing direction by applying a first radial force to the processed steel wire; a rear end pulling-out mechanism arranged behind the outlet end of the continuous casting furnace and configured to move the processed steel wire in the continuous casting advancing direction by applying a second radial force to the processed steel wire coated with the copper layer; wherein the front end pushing mechanism is configured to move the processed steel wire in the continuous casting advancing direction in a step-by-step manner; and wherein the rear end pulling-out mechanism is configured to move the processed steel wire in a step-by-step manner completely synchronized with the front end pushing mechanism, and the first radial force and the second radial force are respectively set to enable the front end pushing mechanism and the rear end pulling-out mechanism to firmly clamp the processed steel wire, or the rear end pulling-out mechanism is configured to move the processed steel wire in a continuous manner generally synchronized with the step-by-step manner of the front end pushing mechanism, and the first radial force is set to enable the front end pushing mechanism to firmly clamp the processed steel wire, and the second radial force is 10%-40% smaller than the first radial force, or the rear end pulling-out mechanism is configured to substantially not apply a force in the continuous casting advancing direction to the processed steel wire while only maintaining the position of the processed steel wire in a vertical direction perpendicular to the continuous casting advancing direction.

2. The steel wire conveying device for a copper clad steel continuous casting line according to claim 1, characterized in that, The front end pushing mechanism comprises a first driver in a step-by-step manner and a first transmission assembly, the first transmission assembly comprising a first rotating wheel and a second rotating wheel, a first channel segment for the processed steel wire being arranged between the first rotating wheel and the second rotating wheel, the first driver being used to drive at least one of the first rotating wheel and the second rotating wheel to rotate; The rear end pulling-out mechanism comprises a second driver in a step-by-step manner and a second transmission assembly, the second transmission assembly comprising a third rotating wheel and a fourth rotating wheel, a second channel segment for the processed steel wire being arranged between the third rotating wheel and the fourth rotating wheel, the second driver being used to drive at least one of the third rotating wheel and the fourth rotating wheel to rotate; wherein the first rotating wheel and the second rotating wheel are configured to apply the first radial force to the processed steel wire relative to each other to generate a first friction force acting on the processed steel wire, and the third rotating wheel and the fourth rotating wheel are configured to apply the second radial force to the processed steel wire relative to each other to generate a second friction force acting on the processed steel wire, the first friction force and the second friction force substantially matching each other.

3. The steel wire conveying device for a copper clad steel continuous casting line according to claim 2, characterized in that, The first transmission assembly comprises a first rigid force applying component connected to at least one of the first rotating wheel and the second rotating wheel, and the second transmission assembly comprises a second rigid force applying component connected to at least one of the third rotating wheel and the fourth rotating wheel, the first rigid force applying component and the second rigid force applying component being configured to apply an adjustable constant radial force to the connected rotating wheel, so as to keep the first friction force and the second friction force substantially equal.

4. The steel wire conveying device for a copper clad steel continuous casting line according to claim 2, characterized in that, The first and second rotors and the third and fourth rotors are arranged such that the central axis of the first channel segment defined between the first and second rotors and the central axis of the second channel segment defined between the third and fourth rotors are aligned with each other.

5. The steel wire conveying device for a copper clad steel continuous casting line according to claim 4, characterized in that, The first and second transmission assemblies are further respectively provided with a fine adjustment mechanism for manually fine-adjusting the horizontal and / or vertical positions of the central axes of the first and second channel segments to avoid the torque generated by the first and second friction forces acting on the processed steel wire from causing the processed steel wire to be subjected to shearing stress.

6. The steel wire conveying device for a copper clad steel continuous casting line according to claim 1, characterized in that, The front end pushing mechanism comprises a step-by-step first driver and a first transmission assembly, the first transmission assembly comprising a first rotor and a second rotor, a first channel segment for the processed steel wire being defined between the first and second rotors, the first driver being configured to drive at least one of the first and second rotors to rotate. The rear end pulling-out mechanism comprises a continuous second driver and a second transmission assembly, the second transmission assembly comprising a third rotor and a fourth rotor, a second channel segment for the processed steel wire being defined between the third and fourth rotors, the second driver being configured to drive at least one of the third and fourth rotors to rotate. The first and second rotors are configured to apply first radial forces to the processed steel wire relative to each other to generate the first friction force acting on the processed steel wire, and the third and fourth rotors are configured to apply second radial forces to the processed steel wire relative to each other to generate the second friction force acting on the processed steel wire. The first transmission assembly comprises a first rigid force applying component connected to at least one of the first and second rotors, and the second transmission assembly comprises a second flexible force applying component connected to at least one of the third and fourth rotors, the second flexible force applying component being configured to apply a variable force tending to cause one of the third and fourth rotors to approach the other, the variable force decreasing as the first and second rotors approach each other, so that the second friction force is 10%-40% smaller than the first friction force; the second flexible force applying component is a compression spring arranged along the line connecting the third and fourth rotors.

7. The steel wire conveying device for a copper clad steel continuous casting line according to claim 2, characterized by, The steel wire conveying device further comprises a controller configured to simultaneously send the same step-by-step driving control signal to the first and second drivers. The first transmission assembly comprises a first rigid force applying component connected to at least one of the first and second rotors, and the second transmission assembly comprises a second rigid force applying component connected to at least one of the third and fourth rotors, the first and second rigid force applying components being configured to apply adjustable constant radial forces to the connected rotors, so as to keep the first and second friction forces substantially equal.

8. The steel wire conveying device for a copper over steel continuous casting line according to any one of claims 2-5 and 7, characterized in that, The output frequency of the step-by-step second driver is in the range of 60-130 cycles / minute, each cycle being an output period comprising an output time and a pause time, and the pitch of the driven steel wire corresponding to each cycle output time being in the range of 0.3-2.5 cm.

9. A continuous-casting line for copper clad steel, comprising: a continuous-casting furnace with a crystallizer assembly; a steel wire conveying device for a continuous-casting line for copper clad steel according to any one of claims 1-8; a cutting mechanism, a straightening mechanism and a polishing mechanism arranged in sequence upstream of the continuous-casting furnace; a cooling device located downstream of the continuous-casting furnace and between the continuous-casting furnace and the tail-end drawing-off mechanism.

10. A continuous-casting line for copper clad steel according to any one of claims 1-9, wherein the cutting mechanism, the straightening mechanism and the polishing mechanism are arranged in sequence upstream of the continuous-casting furnace.

11. A continuous-casting line for copper clad steel according to any one of claims 1-10, wherein the cutting mechanism, the straightening mechanism and the polishing mechanism are arranged in sequence upstream of the continuous-casting furnace.

12. A continuous-casting line for copper clad steel according to any one of claims 1-11, wherein the cooling device is located downstream of the continuous-casting furnace and between the continuous-casting furnace and the tail-end drawing-off mechanism.

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