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

Abstract

The invention discloses a copper-clad steel continuous casting production line and a steel wire conveying method and device used for the copper-clad steel continuous casting production line. The method comprises the following steps continuously executed in the continuous casting production period: controlling a front end pushing mechanism to pull a machined steel wire to move in the continuous casting advancing direction in a mode of applying first radial acting force to the machined steel wire; controlling a rear end pull-out mechanism to pull 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; the front-end pushing mechanism and the rear-end pulling-out mechanism are configured to pull the machined steel wire located between the front-end pushing mechanism and the rear-end pulling-out mechanism in a completely synchronous stepping mode. 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 field of metal continuous casting composite technology, and in particular to a copper-clad steel continuous casting production line and a steel wire conveying method and a steel wire conveying device for the copper-clad steel continuous casting production line, which are specifically used to drive the steel wire to convey the steel wire and pull the copper-clad steel billet out of the continuous casting furnace. Background Art

[0002] In the production of various steel products, there are two methods of using liquid metal solidification, namely traditional die casting and continuous casting. The principle of continuous casting is: molten metal is continuously poured into the crystallizer and then continuously pulled 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. It is a composite conductor made of copper and steel through a special process. This conductor has the high strength, excellent elasticity, large thermal resistance and high magnetic conductivity of steel, as well as the good electrical conductivity and excellent corrosion resistance of copper. It is widely used in electrical and electronic fields.

[0004] In the production process of copper-clad steel materials, a driving device or a traction device is set at the outlet of the continuous casting furnace. The copper-clad steel is pulled out of the continuous casting furnace by the driving device. The driving power required by the driving device is large, and there is a risk that the steel wire is easily broken or cracked, which may lead to a low yield rate and thus drag down production efficiency. In addition, in the process of pulling the steel wire out of the continuous casting furnace, there are also cases where the pulling out fails, which also affects production efficiency.

[0005] Therefore, there is an urgent need to provide a new steel wire conveying method and 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 of existing solutions. Summary of the invention

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

[0007] The present disclosure provides a steel wire conveying method 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 a front end pushing mechanism is arranged in front of the inlet end of the continuous casting furnace, a rear end pulling mechanism is arranged behind the outlet end of the continuous casting furnace, and the method comprises the following steps which are continuously performed during the continuous casting production:

[0008] Controlling the front end pushing mechanism to pull the processed steel wire to move along the continuous casting direction in a manner of applying a first radial force to the processed steel wire;

[0009] Controlling the rear end pulling mechanism to apply a second radial force to the processed steel wire coated with the copper layer to pull the processed steel wire to move along the continuous casting direction;

[0010] Wherein, the front end pushing mechanism is configured to pull the processed steel wire in a step-by-step manner and move along the continuous casting direction in the step-by-step manner;

[0011] And wherein, the rear end pull-out mechanism is configured to pull the processed steel wire between the two in a step-by-step manner that is completely synchronized with 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 pull-out mechanism can firmly clamp the processed steel wire, or the rear end pull-out mechanism is configured to pull the processed steel wire to move in a continuous manner that is 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 pull-out mechanism is configured to only maintain the position of the processed steel wire along a vertical direction perpendicular to the continuous casting direction without basically applying a force to the processed steel wire along the continuous casting direction.

[0012] In this article, "continuous traction" means that the driving force of the front-end pushing mechanism is continuously output, and the driving force is used to transmit the longitudinal (length direction) traction force of the processed steel wire via the first radial force; and "step-by-step traction" means that the driving force of the front-end pushing mechanism is output in a step-by-step manner or is periodically intermittently output, and the driving force is used to transmit the longitudinal traction force (longitudinal direction, i.e., the length direction of the steel wire) of the processed steel wire via the second radial force. In addition, the expression "front-end pushing mechanism" in this article is intended to facilitate the understanding that it is located in front of the continuous casting furnace and is used to push / drive the steel wire into the continuous casting furnace, and the expression "rear-end pulling mechanism" is intended to facilitate the understanding that it is located behind the continuous casting furnace and is used to pull the steel wire to pull the steel wire out of the furnace. These two expressions are not used to indicate that the two only apply thrust or only apply pulling force. The "front-end pushing mechanism" and the "rear-end pulling mechanism" should be understood as driving mechanisms or components that guide the movement of the steel wire along the continuous casting direction.

[0013] It is generally believed that the continuous casting process of copper-clad steel (such as horizontal continuous casting) is developed from the continuous casting process of a single metal such as copper and is used in the continuous casting production of copper-clad steel. In the single metal continuous casting process, a step-by-step drive device is used to pull the metal billet out of the continuous casting furnace. Compared with the continuous casting process of copper-clad steel, it is not necessary to consider the feeding link and its power supply (which can be roughly understood as not needing to drive the processed steel wire into the continuous casting furnace in front of the furnace), and the step-by-step drive device used to pull out the billet can even be equipped with the functions of pulling, stopping, and withdrawing the billet. The continuous casting process of copper-clad steel is developed from the single metal continuous casting process. The important difference between it and the single metal continuous casting is that it is necessary to consider the feeding action of guiding / driving the processed steel wire into the continuous casting furnace and the billet pulling action after the furnace. The continuous casting process of copper-clad steel usually still uses the step-by-step system of pulling out the billet after the furnace. This step-by-step system provides the time required for the copper coating layer in the continuous casting furnace to solidify and performs the pull / stop cycle of the metal billet. Therefore, a stepping drive device such as a stepping motor is very suitable to be the active driving power source and realize the pulling out of the copper-clad steel billet in a stepping manner after the furnace. At the same time, since the front section of the continuous casting furnace and / or the back section of the continuous casting furnace in the copper-clad steel continuous casting production line may need to drive the steel to move forward continuously (for example, the unwinding and straightening in the front process may require continuous power output to ensure the processing effect of its own link), there must be a certain degree of inconsistency in 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 stepping power system provides the time required for the copper coating to solidify and obtains copper-clad steel products with better performance, the copper-clad steel wire obtained through a series of processes and manufactured downstream of the continuous casting furnace has a certain probability or proportion of copper-clad steel wire being broken, cracked, or slightly or even significantly infiltrated with copper (i.e., copper material infiltrates into the wire core formed by the steel wire). Since the entire processing process involves many factors, and the characteristics of the continuous casting production line itself cannot allow the machine to be stopped for inspection as soon as some problems are found, and the crystallization process in the continuous casting process cannot be monitored in real time from the outside due to the ultra-high temperature environment in the furnace, it is difficult to judge the causes and factors of the above defects and their impact.

[0015] The steel wire conveying method and device of each embodiment proposed in the present disclosure are generally based on the experience of metal continuous casting process technology and its implementation, production line and production practice, and the following profound insights drawn therefrom.

[0016] Although the characteristics and quality of the raw material of the unprocessed steel wire in the initial state, the process and parameters of each processing step of the metal continuous casting process, and the process parameters of the continuous casting furnace such as temperature control may cause the aforementioned copper-clad steel wire to break, crack or copper infiltration defects, the steel wire's ability to resist tensile stress under high temperature conditions becomes weaker and cannot well withstand, for example, the net tensile force applied to the steel wire during the stepper motor's pull / stop cycle (i.e., the tensile force applied by the stepper motor is superimposed on the undesirable resistance applied to the steel wire by the furnace front motor), the inconsistency of the front and rear power and the characteristics of the step-type tensile force output by the furnace rear drive device or the furnace rear pull-out mechanism will cause the steel wire to be subjected to a relatively large tension (or tensile stress) at the moment of pulling, which is one of the key factors for the phenomenon of the steel wire being broken, cracked, and copper infiltration (a large amount of copper infiltrates the steel material) caused by the cracking. Therefore, in the continuous casting process of copper-clad steel, by properly matching the furnace front driving force and the driving mode of applying the tensile force behind the furnace, the tension or stress on the steel in the furnace can be relieved.

[0017] To this end, by appropriately improving or configuring the force applied to the processed steel wire by the power device (such as a motor) located before and after (i.e., upstream and downstream) the continuous casting furnace (crystallization furnace) and the process of power transmission, it will help to reduce the maximum tensile stress borne by the steel wire under the high temperature state in the furnace, thereby alleviating or even eliminating the above defects. Specifically, the two embodiments proposed in the present disclosure appropriately set the active traction mechanism in front of the continuous casting furnace (upstream), and set the traction mechanism behind the furnace as a continuous traction mechanism for driven traction or another stepping traction mechanism that drives the steel wire synchronously with the traction mechanism in front of the furnace, so that the driven traction driving force behind the furnace is less than or equal to the driving force applied to the steel wire by the stepping driving mechanism pushed in front of the furnace, so that the stress or tension on the steel wire in the furnace can be eliminated or alleviated to a certain extent, thereby alleviating or avoiding the risk of breaking or cracking the steel wire.

[0018] According to some embodiments of the present disclosure, the front-end pushing mechanism includes a step-type first driver and a first transmission assembly, the first transmission assembly includes a first rotating wheel and a second rotating wheel, a first channel section for the processed steel wire to pass through is provided 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 mechanism comprises a step-by-step second driver and a second transmission assembly, the second transmission assembly comprises a third rotating wheel and a fourth rotating wheel, a second channel section 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] Among them, the first rotating wheel and the second rotating wheel are constructed 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 constructed 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, and the first friction force and the second friction force match each other.

[0021] Among them, the arrangement of a first channel section and a second transmission assembly similar thereto is arranged between the first wheel and the second wheel, which can be understood as a plurality of wheels of the transmission assembly being distributed on both sides of the travel path of the processed steel wire, thereby defining the dimension of the first channel section in the radial direction perpendicular to the axial direction of the processed steel wire (i.e. perpendicular to the travel path direction). For example, for horizontal continuous casting, an optional design of the transmission assembly is that a plurality of wheels define the radial dimension of the first channel section in the vertical direction, and the radial dimension is roughly consistent with the radial dimension of the processed steel wire passing through the position of the channel section in the production line, and the processed steel wire may differ in size and surface properties such as surface hardness due to the processing procedures it undergoes.

[0022] As a result, the traction forces on both ends of the steel wire in the continuous casting process or under high temperature conditions in the continuous casting furnace will be able to remain consistent, thereby at least ensuring that the tension or stress on the steel wire at the link with weaker resistance to tensile stress is greatly reduced or even eliminated. At the same time, since this link is also a key process link in the production of copper-clad steel, this implementation method will significantly minimize the risk of the steel wire being broken, cracked, and copper infiltration (a large amount of copper infiltrating into the steel material) 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 rotating wheel and the second rotating wheel, and the second transmission assembly includes a second rigid force-applying component connected to at least one of the third rotating wheel and the fourth rotating wheel, and the first rigid force-applying component and the second rigid force-applying component are configured to apply an adjustable constant radial force to the connected wheels, thereby keeping the first friction force and the second friction force basically equal.

[0024] According to some embodiments of the present disclosure, the first rotating wheel and the second rotating wheel as well as the third rotating wheel and the fourth rotating wheel are arranged so that the central axis of the first channel segment defined between the first two rotating wheels and the central axis of the second channel segment defined between the second two rotating wheels are aligned with each other. Herein, the alignment referred to herein can be understood as alignment within the range of several millimeters, that is, only a deviation of at most the order of millimeters 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 provided with fine-tuning mechanisms, respectively, which are used to manually fine-tune the horizontal position and / or vertical position of the central axis of the first channel segment and the second channel segment to avoid the torque generated by the first friction force and the second friction force acting on the processed steel wire causing the processed steel wire to undergo shear stress.

[0026] This better implementation method can effectively eliminate the stress on the steel wire in the furnace, and minimize the quality risks such as steel wire breakage, cracking or copper infiltration, and also has the potential to increase the overall travel speed of the processed steel wire to improve production efficiency or at least provide such a possibility. In addition, this method can also eliminate the adverse effects of steel wire vibration on concentricity control caused by the lack of synchronization of the drive mechanism at the front and rear ends of the continuous casting furnace in some existing solutions.

[0027] According to some alternative embodiments of the present disclosure, the second drive is a continuous drive rather than a stepping drive and a second transmission assembly, wherein the first transmission assembly includes a first rigid force-applying component connected to at least one of the first wheel and the second wheel, and the second transmission assembly includes a second flexible force-applying component connected to at least one of the third wheel and the fourth wheel, and the flexible force-applying component is constructed to apply a variable force tending to urge one of the third wheel and the fourth wheel to approach the other, and the variable force becomes smaller as the first wheel and the second wheel approach each other, so that the second friction force is 10%-40% smaller than the first friction force.

[0028] According to some preferred embodiments of the present disclosure, the output frequency of the stepping second drive 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 driving steel wire corresponding to each cycle output time is in the range of 0.3-2.5 cm.

[0029] The present disclosure also provides a steel wire conveying device for a copper-clad steel continuous casting production line, wherein the copper-clad steel continuous casting production line includes a continuous casting furnace with a crystallizer assembly, wherein the steel wire conveying device includes:

[0030] A front end pushing mechanism, which is arranged in front of the inlet end of the continuous casting furnace and is configured to pull the processed steel wire to move along the continuous casting direction in a manner of applying a first radial force to the processed steel wire;

[0031] A rear end pull-out mechanism, which is arranged behind the outlet end of the continuous casting furnace and is configured to pull the processed steel wire to move along the continuous casting direction in a manner of applying a second radial force to the processed steel wire coated with the copper layer;

[0032] Wherein, the front end pushing mechanism is configured to pull the processed steel wire in a step-by-step manner and move along the continuous casting direction in the step-by-step manner;

[0033] And wherein, the rear end pull-out mechanism is configured to pull the processed steel wire between the two in a step-by-step manner that is completely synchronized with 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 pull-out mechanism can firmly clamp the processed steel wire, or the rear end pull-out mechanism is configured to pull the processed steel wire to move in a continuous manner that is 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 pull-out mechanism is configured to only maintain the position of the processed steel wire along a vertical direction perpendicular to the continuous casting direction without basically applying a force to the processed steel wire along the continuous casting direction.

[0034] According to some embodiments of the present disclosure, the front-end pushing mechanism includes a step-type first driver and a first transmission assembly, the first transmission assembly includes a first rotating wheel and a second rotating wheel, a first channel section for the processed steel wire to pass through is provided 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;

[0035] The rear end pulling mechanism comprises a step-by-step second driver and a second transmission assembly, the second transmission assembly comprises a third rotating wheel and a fourth rotating wheel, a second channel section 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;

[0036] Among them, the first rotating wheel and the second rotating wheel are constructed 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 constructed 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, and the first friction force and the second friction force basically match each other.

[0037] 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 rotating wheel and the second rotating wheel, and the second transmission assembly includes a second rigid force-applying component connected to at least one of the third rotating wheel and the fourth rotating wheel, and the first rigid force-applying component and the second rigid force-applying component are configured to apply an adjustable constant radial force to the connected wheels, thereby keeping the first friction force and the second friction force basically equal.

[0038] According to some embodiments of the present disclosure, the first and second wheels and the third and fourth wheels are arranged so that a central axis of a first channel segment defined between the first two wheels and a central axis of a second channel segment defined between the second two wheels are aligned with each other.

[0039] According to some embodiments of the present disclosure, the first transmission assembly and the second transmission assembly are further provided with a fine-tuning mechanism, respectively, which is used to manually fine-tune the horizontal position and / or vertical position of the central axis of the first channel segment and the second channel segment to avoid the torque generated by the first friction force and the second friction force acting on the processed steel wire causing the processed steel wire to undergo shear stress.

[0040] According to some alternative embodiments of the present disclosure, the front-end pushing mechanism includes a step-by-step first driver and a first transmission assembly, the first transmission assembly includes a first rotating wheel and a second rotating wheel, a first channel section for the processed steel wire to pass through is provided 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;

[0041] The rear end pulling mechanism comprises a continuous second driver and a second transmission assembly, the second transmission assembly comprises a third rotating wheel and a fourth rotating wheel, a second channel section 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;

[0042] 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;

[0043] And wherein, the first transmission assembly includes a first rigid force-applying component connected to at least one of the first wheel and the second wheel, and the second transmission assembly includes a second flexible force-applying component connected to at least one of the third wheel and the fourth wheel, and the flexible force-applying component is constructed to apply a variable force tending to urge one of the third wheel and the fourth wheel to approach the other, and the variable force becomes smaller as the first wheel and the second wheel approach each other, so that the second friction force is 10%-40% smaller than the first friction force.

[0044] According to some preferred embodiments of the present disclosure, the wire conveying device further comprises a controller configured to simultaneously send the same stepping drive control signal to the first driver and the second driver;

[0045] The first transmission assembly includes 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 includes 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 are configured to apply an adjustable constant radial force to the connected wheels, thereby keeping the first friction force and the second friction force basically equal.

[0046] According to some preferred embodiments of the present disclosure, the output frequency of the stepping second drive 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 driving steel wire corresponding to each cycle output time is in the range of 0.3-2.5 cm.

[0047] The present disclosure also provides a copper-clad steel continuous casting production line, comprising:

[0048] A continuous casting furnace with a crystallizer assembly;

[0049] A steel wire conveying device for a copper-clad steel continuous casting production line as described in any of the previous embodiments;

[0050] A material cutting mechanism, a straightening mechanism and a polishing mechanism are sequentially arranged upstream of the continuous casting furnace;

[0051] A cooling device is located downstream of the continuous casting furnace and between the rear end pull-out mechanism.

[0052] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0053] The positive and progressive effects of this disclosure are:

[0054] The copper-clad steel continuous casting production line and the steel wire conveying method and steel wire conveying device used in the copper-clad steel continuous casting production line according to the contents of the present disclosure can at least to a certain extent help alleviate or even eliminate the risk of the steel wire being easily broken or cracked, thereby improving the production yield and production efficiency of the copper-clad steel continuous casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 The overall schematic diagram of a copper-clad steel production line is schematically shown, and the copper-clad steel continuous casting production line includes a steel wire conveying device according to a preferred embodiment of the present disclosure.

[0056] Description of reference numerals:

[0057] 1. Front end driving mechanism; 11. First rotating wheel; 12. Second rotating wheel;

[0058] 2. Rear end pull-out mechanism; 21. Third rotating wheel; 22. Fourth rotating wheel;

[0059] 3. Continuous casting furnace; 4. Cutting mechanism; 5. Straightening mechanism; 6. Polishing mechanism; 7. Cooling device; 8. Processed steel wire;

[0060] 1', unwinding drive mechanism; 1", straightening drive mechanism DETAILED DESCRIPTION

[0061] The preferred embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the specification. The following description is exemplary and not limiting of the present invention. Any other similar situations also fall within the protection scope of the present invention.

[0062] In the following detailed description, directional terms, such as "left", "right", "up", "down", "front", "rear", etc., are used with reference to the directions described in the drawings. The components of the embodiments of the present invention can be placed in a variety of different directions, and the directional terms are used for illustrative purposes rather than limiting.

[0063] First embodiment

[0064] refer to Figure 1 As shown, a steel wire conveying device according to a preferred embodiment of the present disclosure is used in a copper-clad steel continuous casting production line, wherein the copper-clad steel continuous casting production line includes a continuous casting furnace 3 with a crystallizer assembly.

[0065] Specifically, the steel wire conveying device comprises:

[0066] The steel wire conveying device comprises:

[0067] A front end pushing mechanism 1, which is arranged in front of the inlet end of the continuous casting furnace and is configured to pull the processed steel wire to move along the continuous casting direction in a manner of applying a first radial force to the processed steel wire;

[0068] A rear end pull-out mechanism 2, which is arranged behind the outlet end of the continuous casting furnace and is configured to pull the processed steel wire to move along the continuous casting direction by applying a second radial force to the processed steel wire coated with the copper layer;

[0069] Wherein, the front end pushing mechanism 1 is configured to pull the processed steel wire in a step-by-step manner and move along the continuous casting direction in the step-by-step manner;

[0070] And wherein, the rear end pulling-out mechanism 2 is configured to pull the processed steel wire to move in a continuous manner that is generally synchronized with the stepping manner of the front end pushing mechanism 1, and the first radial force is set so that the front end pushing mechanism 1 can firmly clamp the processed steel wire, and the second radial force is 10%-40% smaller than the first radial force.

[0071] The front-end pushing mechanism 1 includes a step-by-step first driver and a first transmission assembly, the first transmission assembly includes a first rotating wheel 11 and a second rotating wheel, a first channel section for the processed steel wire to pass through is provided 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;

[0072] The rear end pulling mechanism 2 includes a continuous second driver and a second transmission assembly, the second transmission assembly includes a third rotating wheel 21 and a fourth rotating wheel 22, a second channel section 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;

[0073] 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;

[0074] And wherein, the first transmission assembly includes a first rigid force-applying component connected to at least one of the first wheel 11 and the second wheel, and the second transmission assembly includes a second flexible force-applying component connected to at least one of the third wheel 21 and the fourth wheel 22, and the flexible force-applying component is constructed to apply a variable force tending to urge one of the third wheel 21 and the fourth wheel 22 to approach the other, and the variable force becomes smaller as the first wheel 11 and the second wheel approach each other, so that the second friction force is 10%-40% smaller than the first friction force.

[0075] In some specific examples, the wheels are configured with grooves, and accordingly, the spaces between the grooves of the corresponding wheels define passage sections for the processed steel wire 8 to pass through so as to press out the steel wire.

[0076] The first embodiment of the present disclosure arranges an active traction mechanism in front of (upstream of) the continuous casting furnace, and arranges the traction mechanism behind the furnace as a continuous traction mechanism for driven traction, thereby maintaining the driven traction driving force behind the furnace at a level less than or equal to the driving force applied to the steel wire by the stepping driving mechanism pushing the front of the furnace, thereby being able to eliminate or alleviate the stress or tension exerted on the steel wire in the furnace to a certain extent, thereby alleviating or avoiding the risk of the steel wire being broken or cracked.

[0077] More specifically, for example, the flexible force-applying component can be an elastic member, and more preferably, a compression spring is arranged along the connecting direction of the third wheel 21 and the fourth wheel 22, one end of the compression spring is connected to the third wheel 21 or the fourth wheel 22, and the other end can be detachably attached to an optional spring mounting position of the first transmission assembly according to the desired compression amount of the compression spring.

[0078] Preferably, the output frequency of the stepping second drive 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 driving steel wire corresponding to each cycle output time is in the range of 0.3-2.5 cm.

[0079] In this way, 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 pulling behind the furnace, while at the same time it is ensured that the force is not too large and always has the necessary slipping ability to provide buffering for the incomplete synchronization of the drive in front of and behind the furnace during the steel wire transportation process, and the vibration of the steel wire that may be caused by the asynchrony of the traction force in front of and behind the furnace is also alleviated to a certain extent, for example, the maximum amplitude of the vibration is limited to a certain extent.

[0080] In the present disclosure, for example, the first rotating wheel 11 and the second rotating wheel 12 can be arranged side by side up and down, or not aligned along the vertical axis but still arranged in pairs. 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 above-mentioned appropriate functions of guiding, pulling and limiting the processed steel wire 8 and apply 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, so it will not be repeated here.

[0081] For example, typical examples of the driver are relatively low-cost continuous motors and stepper motors, and the second driver can also be a motor. A possible way to control the stepper driver can be, for example, to control the rotational driving force to maintain a preset time in each output cycle, or to control the rotational driving force to drive the processed steel wire 8 to travel a preset length. More specifically, the steel wire can be driven to travel in a step-by-step manner, for example, by timing control, detecting the length of the processed steel wire 8 or the angle of rotation of the driver output shaft.

[0082] Second embodiment

[0083] Still reference Figure 1 As shown, a steel wire conveying device according to a preferred embodiment of the present disclosure is used in a copper-clad steel continuous casting production line, wherein the copper-clad steel continuous casting production line includes a continuous casting furnace 3 with a crystallizer assembly.

[0084] Specifically, the steel wire conveying device comprises:

[0085] A front end pushing mechanism 1, which is arranged in front of the inlet end of the continuous casting furnace and is configured to pull the processed steel wire to move along the continuous casting direction in a manner of applying a first radial force to the processed steel wire;

[0086] A rear end pull-out mechanism 2, which is arranged behind the outlet end of the continuous casting furnace and is configured to pull the processed steel wire to move along the continuous casting direction by applying a second radial force to the processed steel wire coated with the copper layer;

[0087] Among them, the front end pushing mechanism 1 is configured to pull the processed steel wire in a stepping manner and move it in the stepping manner along the continuous casting direction, and the rear end pulling mechanism 2 is configured to pull the processed steel wire between the two in a stepping manner that is 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.

[0088] Wherein, optionally, the front-end pushing mechanism 1 includes a step-type first driver and a first transmission assembly, the first transmission assembly includes a first rotating wheel 11 and a second rotating wheel, a first channel section for the processed steel wire to pass through is provided 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;

[0089] The rear end pulling mechanism 2 includes a step-by-step second driver and a second transmission assembly, the second transmission assembly includes a third rotating wheel 21 and a fourth rotating wheel 22, a second channel section for the processed steel wire to pass through is provided 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;

[0090] Among them, the first rotating wheel 11 and the second rotating wheel are constructed 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 constructed 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, and the first friction force and the second friction force basically match each other.

[0091] Specifically, the second embodiment of the present disclosure sets a stepping traction mechanism capable of synchronously driving the steel wire to move forward in front of (upstream) / after (downstream) the continuous casting furnace. Its technical effect in eliminating or alleviating the stress or tension on the steel wire in the furnace, thereby alleviating or avoiding the risk of the steel wire breaking or cracking is better than the first embodiment and significantly better than the solutions that can be provided by the prior art.

[0092] According to the second embodiment, the traction force on both ends of the steel wire at the continuous casting link or in other words, at high temperature in the continuous casting furnace, will be able to remain consistent, thereby at least ensuring that the tension or stress on the steel wire at the link with weaker resistance to tensile stress is greatly reduced or even eliminated. At the same time, since this link is also a key process link in the production of copper-clad steel, this implementation method will significantly reduce the risk of the steel wire being broken, cracked, and copper infiltration (a large amount of copper infiltrates the steel material) caused by the cracking to a minimum. It can be said that under the premise of properly implementing this solution, in this key process link in the production of copper-clad steel (which is also the most vulnerable link of the steel wire), the phenomenon or defect of the steel wire being broken, cracked, and copper infiltration caused by the cracking will be eliminated or completely avoided.

[0093] 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 wheel 11 and the second wheel, and the second transmission assembly includes a second rigid force-applying component connected to at least one of the third wheel 21 and the fourth wheel 22. The first rigid force-applying component and the second rigid force-applying component are configured to apply an adjustable constant radial force to the connected wheels, thereby keeping the first friction force and the second friction force basically equal.

[0094] According to a more preferred configuration, the first and second wheels 11 and the third and fourth wheels 21 and 22 are arranged so that the central axis of the first channel section defined between the first two wheels and the central axis of the second channel section defined between the second two wheels are aligned with each other.

[0095] According to a more preferred configuration, the first transmission assembly and the second transmission assembly are also respectively provided with a fine-tuning mechanism, which is used to manually fine-tune the horizontal position and / or vertical position of the central axis of the first channel segment and the second channel segment to avoid the torque generated by the first friction force and the second friction force acting on the processed steel wire causing the processed steel wire to undergo shear stress.

[0096] According to a more preferred configuration, the steel wire conveying device further comprises a controller, wherein the controller is configured to simultaneously send the same stepping drive control signal to the first driver and the second driver;

[0097] The first transmission assembly includes a first rigid force-applying component connected to at least one of the first wheel 11 and the second wheel, and the second transmission assembly includes a second rigid force-applying component connected to at least one of the third wheel 21 and the fourth wheel 22. The first rigid force-applying component and the second rigid force-applying component are configured to apply an adjustable constant radial force to the connected wheels, thereby keeping the first friction force and the second friction force basically equal.

[0098] Through the above-mentioned better configurations, the stress on the steel wire in the furnace can be well eliminated or even completely eliminated with high reliability, and the quality risks such as steel wire breaking, cracking or copper infiltration can be avoided to the greatest extent. It also has the potential to increase the overall travel speed of the processed steel wire to improve production efficiency or at least provides such a possibility. This is because in some solutions where the forces applied to the steel wire by the traction drive mechanism at the front and rear ends of the continuous casting furnace are not synchronized, increasing the overall travel speed of the processed steel wire will directly lead to the mismatch between the driving force between the stepper motor and the continuous motor that cooperates with it during each pull-stop cycle, which causes the steel wire to be subjected to greater tension or stress. In addition, the faster travel speed of the steel wire may also require the increase of the temperature of the copper liquid in the continuous casting furnace to process the copper coating process, which causes the temperature of the steel wire to rise. These will bring significantly greater product quality risks while improving productivity, namely the aforementioned quality risks such as steel wire breaking, cracking or copper infiltration. In comparison, the second embodiment of the present disclosure will not increase the product quality risks of steel wire breakage, cracking or copper infiltration due to the improvement of productivity, and thus provides the potential or potential possibility of increasing the overall travel speed of the processed steel wire to improve production efficiency, which further reflects the technical advantages that can be achieved by the second embodiment of the present disclosure.

[0099] Moreover, this method can also eliminate the adverse effects of steel wire vibration on concentricity control caused by the lack of drive mechanism synchronization at the front and rear ends of the continuous casting furnace in some existing solutions.

[0100] According to a further preferred configuration of the second embodiment, the output frequency of the stepping second drive 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 driving steel wire corresponding to each cycle output time is in the range of 0.3-2.5 cm.

[0101] Although as explained above, the second embodiment of the present disclosure can almost completely eliminate the quality risks such as steel wire breakage, cracking or copper infiltration caused by the force applied to the steel wire in the furnace through the above-mentioned preferred configuration, since the front section of the continuous casting furnace and / or the back section of the continuous casting furnace in the copper-clad steel continuous casting production line may still need to drive the steel wire continuously forward (for example, the traction assembly used in the straightening process of the front section usually needs to continuously drive the steel wire forward), there will still be a certain degree of inconsistency in the upstream and downstream power systems from the perspective of the entire production line. Another insight on which the second embodiment of the present disclosure is based is that, compared with the processed steel wire in the continuous casting furnace, the steel wire at other links of the production line has significantly stronger tensile strength and is less likely to break or crack. At the same time, even if breakage or cracking occurs, it is significantly easier to be discovered / observed in time and dealt with in time. Therefore, from the perspective of the entire production line, it has significant technical advantages over other existing solutions and the first embodiment.

[0102] Taking the traction component used in the previous straightening process (straightening mechanism 5) as an example, which is a continuous motor that needs to exert a large radial force to firmly clamp the steel wire and continuously drive the steel wire to move forward, since there is usually a spacing of at least one meter or approximately in this order of magnitude between the straightening motor and the stepping front end pushing mechanism 1 in front of the continuous casting furnace in the production line, as long as the pitch of the stepping motor driving the steel wire forward is not too large (within the pitch range described above), then the excess distance of the steel wire moved forward by the straightening motor continuously driving the steel wire forward, that is, the amount of the straightening motor driving the steel wire forward, which is approximately the pause time of the stepping cycle executed by the front end pushing mechanism 1 in front of the continuous casting furnace, can be completely accommodated within the production line distance between the straightening mechanism 5 and the front end pushing mechanism 1 in front of the furnace. Since this excess distance or length of steel wire accounts for a very low proportion of the total length of the steel wire between the straightening mechanism 5 and the front end pushing mechanism 1 in front of the furnace, the asynchrony of the upstream and downstream driving mechanisms will actually only produce very inconspicuous or very small steel wire vibration or steel wire swing at most, and the impact transmitted to the steel wire part in the continuous casting furnace will be smaller and negligible, while eliminating the adverse effects of the steel wire swing on the service life of the crystallizer and the concentricity of the billet caused by the unstable position of the steel wire entering the furnace.

[0103] For example, refer to Figure 1 As shown, a cutting mechanism 4 (uncoiler mechanism), a straightening mechanism 5 and a polishing mechanism 6 are sequentially arranged upstream of the continuous casting furnace 3. Before the processed steel wire 8 enters the continuous casting furnace 3, the processed steel wire 8 is cut, straightened and polished to ensure that the processed steel wire 8 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.

[0104] A front-end drive mechanism may be optionally arranged between the cutting mechanism 4, the straightening mechanism 5 and the polishing mechanism 6. The position and quantity of the front-end drive mechanism can be flexibly set, and its own structure can be similar to the front-end push mechanism arranged in front of the furnace, but it does not provide the aforementioned slip and buffer area, which means that in the case of a front-end drive mechanism of a continuous output type, the corresponding mechanisms such as the cutting mechanism 4 and the straightening mechanism 5 will work or process continuously, during which the steel wire is also driven to move continuously.

[0105] The front-end drive mechanism can be set, for example, between two adjacent components, such as between the cutting mechanism 4 and the straightening mechanism 5, and between the straightening mechanism 5 and the polishing mechanism 6. The front-end drive mechanism can be set at one or more of the aforementioned positions, and the setting position of the front-end drive mechanism has a certain flexibility, and the selection of its setting position can be aimed at ensuring that the processed steel wire 8 moves stably between two adjacent components.

[0106] When a front-end driving mechanism is provided between the opening mechanism 4 and the straightening mechanism 5, and between the straightening mechanism 5 and the polishing mechanism 6, a total of three driving mechanisms including the front-end pushing mechanism 1 and the front-end driving mechanism can be provided upstream of the continuous casting furnace in the continuous casting production line, and one rear-end pulling mechanism 2 is provided. These three driving mechanisms can pull the processed steel wire toward the continuous casting furnace 3 and move it along the continuous casting direction 8. A rear-end pulling mechanism 2 pulls out the processed steel wire 8 from the continuous casting furnace 3, and drives the processed steel wire 8 to move in a three-push and one-pull manner, and can also drive the processed steel wire 8 to stably move between two adjacent processes / components in front of the furnace, thereby maintaining the moving stability and ensuring the processing accuracy of processes such as opening (uncoiling), straightening, and polishing.

[0107] The current driving mechanism may include a first transmission component, which can guide and limit the processed steel wire 8. In the processes of cutting, straightening, polishing, etc., the processed steel wire 8 can be accurately positioned, which helps to improve the processing accuracy.

[0108] In some other embodiments, a cooling device 7 and a rear-end pull-out mechanism 2 are sequentially arranged downstream of the continuous casting furnace 3. The rear-end pull-out mechanism 2 is arranged downstream of the cooling device 7. After the processed steel wire 8 is coated with the copper layer, it is first cooled by the cooling device 7. The preset tension of the rear-end pull-out mechanism 2 is applied to the cooled processed steel wire 8. The structural stability of the cooled processed steel wire 8 is better, and the structural influence of the rear-end pull-out mechanism 2 on the processed steel wire 8 is reduced. The rear-end pull-out mechanism 2 is adjacent to the cooling device 7, shortening the distance between the rear-end pull-out mechanism 2 and the continuous casting furnace 3, ensuring that the preset tension can stably pull out the processed steel wire 8 in the continuous casting furnace 3, and the position of the rear-end pull-out mechanism 2 is reasonable, and the force on the processed steel wire 8 is reasonable.

[0109] The structures of the above-mentioned opening mechanism 4, straightening mechanism 5, polishing mechanism 6, continuous casting furnace 3, and cooling device 7 are not limited, and any components that can meet the requirements of horizontal continuous casting of copper-clad steel are sufficient. It should be noted that the opening mechanism 4, straightening mechanism 5, and polishing mechanism 6 need to be used in conjunction with the front-end driving mechanism.

[0110] According to a further preferred embodiment, the unwinding drive mechanism 1' provided in cooperation with the material opening mechanism 4, the straightening drive mechanism 1" provided in cooperation with the straightening mechanism 5 and the front end pushing mechanism 1 located upstream of the continuous casting furnace 3 described in detail above may be different in specific configuration, wherein the straightening drive mechanism 1" at the straightening mechanism 5 clamps the steel wire with a greater radial force, and the clamping force at this location may be significantly greater than the force applied by the unwinding drive mechanism 1' at the material opening mechanism. In other words, if Figure 1Among the radial forces applied at various locations of the production line schematically shown 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 to be relatively large so that the traction assembly can transmit the output torque to the steel wire more completely to drive it forward.

[0111] The copper-clad steel continuous casting production line and the steel wire conveying device used in the copper-clad steel continuous casting production line according to the contents of the present disclosure can help alleviate or even eliminate the quality risks caused by the steel wire being easily broken or cracked, and help improve the production yield and production efficiency of the copper-clad steel continuous casting.

[0112] Some method embodiments of the present disclosure also provide a steel wire conveying method for a copper-clad steel continuous casting production line. The steel wire conveying method generally has the same or similar features as the steel wire conveying devices of some preferred embodiments described above, which will not be described in detail here.

[0113] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A steel wire conveying method for a copper-clad steel continuous casting production line, wherein the copper-clad steel continuous casting production line comprises a continuous casting furnace with a crystallizer assembly, characterized in that: A front end pushing mechanism is arranged in front of the inlet end of the continuous casting furnace, and a rear end pulling mechanism is arranged behind the outlet end of the continuous casting furnace, and the following steps are continuously performed during the continuous casting production: Controlling the front end pushing mechanism to pull the processed steel wire to move along the continuous casting direction in a manner of applying a first radial force to the processed steel wire; Controlling the rear end pulling mechanism to apply a second radial force to the processed steel wire coated with the copper layer to pull the processed steel wire to move along the continuous casting direction; Wherein, the front end pushing mechanism is configured to pull the processed steel wire in a step-by-step manner and move along the continuous casting direction in the step-by-step manner; And wherein, the rear end pull-out mechanism is configured to pull the processed steel wire between the two in a step-by-step manner that is completely synchronized with 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 pull-out mechanism can firmly clamp the processed steel wire, or the rear end pull-out mechanism is configured to pull the processed steel wire to move in a continuous manner that is 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 pull-out mechanism is configured to only maintain the position of the processed steel wire along a vertical direction perpendicular to the continuous casting direction without basically applying a force to the processed steel wire along the continuous casting direction.

2. The steel wire conveying method for a copper-clad steel continuous casting production 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 comprises a first rotating wheel and a second rotating wheel, a first channel section 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; The rear end pulling mechanism comprises a step-by-step second driver and a second transmission assembly, the second transmission assembly comprises a third rotating wheel and a fourth rotating wheel, a second channel section 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; Among them, the first rotating wheel and the second rotating wheel are constructed 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 constructed 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, and the first friction force and the second friction force match each other.

3. The steel wire conveying method for a copper-clad steel continuous casting production line according to claim 2, characterized in that: The first transmission assembly includes 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 includes 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 are configured to apply an adjustable constant radial force to the connected wheels, thereby keeping the first friction force and the second friction force basically equal.

4. The steel wire conveying method for a copper-clad steel continuous casting production line according to claim 2, characterized in that: The first and second rotating wheels as well as the third and fourth rotating wheels are arranged so that a central axis of a first channel section defined between the first two and a central axis of a second channel section defined between the latter two are aligned with each other.

5. The steel wire conveying method for a copper-clad steel continuous casting production line according to claim 4, characterized in that: The first transmission assembly and the second transmission assembly are also respectively provided with a fine-tuning mechanism, which is used to manually fine-tune the horizontal position and / or vertical position of the central axis of the first channel segment and the second channel segment to avoid the torque generated by the first friction force and the second friction force acting on the processed steel wire causing the processed steel wire to undergo shear stress.

6. The steel wire conveying method for a copper-clad steel continuous casting production line according to claim 2, characterized in that: The second drive is a continuous drive rather than a step-by-step drive and a second transmission assembly, wherein the first transmission assembly includes 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 includes a second flexible force-applying component connected to at least one of the third rotating wheel and the fourth rotating wheel, and the flexible force-applying component is constructed to apply a variable force tending to urge one of the third rotating wheel and the fourth rotating wheel to approach the other, and the variable force becomes smaller as the first rotating wheel and the second rotating wheel approach each other, so that the second friction force is 10%-40% smaller than the first friction force.

7. The steel wire conveying method for a copper-clad steel continuous casting production line according to any one of claims 1 to 6, characterized in that: The output frequency of the second stepping drive 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 driving steel wire corresponding to each cycle output time is in the range of 0.3-2.5cm.

8. 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: A front end pushing mechanism, which is arranged in front of the inlet end of the continuous casting furnace and is configured to pull the processed steel wire to move along the continuous casting direction in a manner of applying a first radial force to the processed steel wire; A rear end pull-out mechanism, which is arranged behind the outlet end of the continuous casting furnace and is configured to pull the processed steel wire to move along the continuous casting direction in a manner of applying a second radial force to the processed steel wire coated with the copper layer; Wherein, the front end pushing mechanism is configured to pull the processed steel wire in a step-by-step manner and move along the continuous casting direction in the step-by-step manner; And wherein, the rear end pull-out mechanism is configured to pull the processed steel wire between the two in a step-by-step manner that is completely synchronized with 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 pull-out mechanism can firmly clamp the processed steel wire, or the rear end pull-out mechanism is configured to pull the processed steel wire to move in a continuous manner that is 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 pull-out mechanism is configured to only maintain the position of the processed steel wire along a vertical direction perpendicular to the continuous casting direction without basically applying a force to the processed steel wire along the continuous casting direction.

9. The steel wire conveying device for the copper-clad steel continuous casting production line according to claim 8, characterized in that: The front end pushing mechanism comprises a step-by-step first driver and a first transmission assembly, the first transmission assembly comprises a first rotating wheel and a second rotating wheel, a first channel section 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; The rear end pulling mechanism comprises a step-by-step second driver and a second transmission assembly, the second transmission assembly comprises a third rotating wheel and a fourth rotating wheel, a second channel section 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; Among them, the first rotating wheel and the second rotating wheel are constructed 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 constructed 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, and the first friction force and the second friction force basically match each other.

10. The steel wire conveying device for the copper-clad steel continuous casting production line according to claim 9, characterized in that: The first transmission assembly includes 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 includes 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 are configured to apply an adjustable constant radial force to the connected wheels, thereby keeping the first friction force and the second friction force basically equal.

11. The steel wire conveying device for a copper-clad steel continuous casting production line according to claim 9, characterized in that: The first and second rotating wheels as well as the third and fourth rotating wheels are arranged so that a central axis of a first channel section defined between the first two and a central axis of a second channel section defined between the latter two are aligned with each other.

12. The steel wire conveying device for the copper-clad steel continuous casting production line according to claim 11, characterized in that: The first transmission assembly and the second transmission assembly are also respectively provided with a fine-tuning mechanism, which is used to manually fine-tune the horizontal position and / or vertical position of the central axis of the first channel segment and the second channel segment to avoid the torque generated by the first friction force and the second friction force acting on the processed steel wire causing the processed steel wire to undergo shear stress.

13. The steel wire conveying device for a copper-clad steel continuous casting production line according to claim 8, characterized in that: The front end pushing mechanism comprises a step-by-step first driver and a first transmission assembly, the first transmission assembly comprises a first rotating wheel and a second rotating wheel, a first channel section 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; The rear end pulling mechanism comprises a continuous second driver and a second transmission assembly, the second transmission assembly comprises a third rotating wheel and a fourth rotating wheel, a second channel section 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; 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; And wherein, the first transmission assembly includes a first rigid force-applying component connected to at least one of the first wheel and the second wheel, and the second transmission assembly includes a second flexible force-applying component connected to at least one of the third wheel and the fourth wheel, and the flexible force-applying component is constructed to apply a variable force tending to urge one of the third wheel and the fourth wheel to approach the other, and the variable force becomes smaller as the first wheel and the second wheel approach each other, so that the second friction force is 10%-40% smaller than the first friction force.

14. The steel wire conveying device for a copper-clad steel continuous casting production line according to claim 9, characterized in that: The wire conveying device further includes a controller configured to simultaneously send the same stepping drive control signal to the first driver and the second driver; The first transmission assembly includes 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 includes 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 are configured to apply an adjustable constant radial force to the connected wheels, thereby keeping the first friction force and the second friction force basically equal.

15. The steel wire conveying device for a copper-clad steel continuous casting production line according to any one of claims 8 to 14, characterized in that: The output frequency of the step-type second drive 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 driving steel wire corresponding to each cycle output time is in the range of 0.3-2.5cm.

16. A copper-clad steel continuous casting production line, comprising: A continuous casting furnace with a crystallizer assembly; A steel wire conveying device for a copper-clad steel continuous casting production line according to any one of claims 8 to 15; A material cutting mechanism, a straightening mechanism and a polishing mechanism are sequentially arranged upstream of the continuous casting furnace; A cooling device is located downstream of the continuous casting furnace and between the rear end pull-out mechanism.

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