CN217492627U - Crystallizer, copper melting furnace and copper-clad steel production line with same - Google Patents
Crystallizer, copper melting furnace and copper-clad steel production line with same Download PDFInfo
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- CN217492627U CN217492627U CN202220676908.4U CN202220676908U CN217492627U CN 217492627 U CN217492627 U CN 217492627U CN 202220676908 U CN202220676908 U CN 202220676908U CN 217492627 U CN217492627 U CN 217492627U
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Abstract
The utility model relates to a horizontal continuous casting technology makes copper and covers steel production technical field, concretely relates to crystallizer, copper melting furnace and have its copper cover steel production line. A crystallizer, comprising: the fixing sleeve is provided with a first through hole; the first end of the cooling pipe is arranged in the first through hole, and the cooling pipe is provided with a channel allowing a steel wire to pass through; the filling mold is partially arranged in the first through hole and is in butt joint with the first end of the cooling pipe, the filling mold is provided with a second through hole allowing a steel wire to pass through, a gap is reserved between the steel wire and the inner wall of the second through hole, the side wall of the filling mold exposed outside the first through hole is provided with at least one filling hole allowing copper liquid to flow in, the filling hole is communicated with the second through hole, and the axes of the filling hole and the second through hole are perpendicular to each other, so that the copper liquid entering through the filling hole covers the surface of the steel wire in the filling mold and the cooling pipe. The utility model provides a crystallizer and copper liquid have the temperature difference, influence copper liquid and copper wire and contact completely, cover the inhomogeneous problem of copper layer thickness on the copper wire.
Description
Technical Field
The utility model relates to a horizontal continuous casting technology makes copper and covers steel production technical field, concretely relates to crystallizer, copper melting furnace and have its copper cover steel production line.
Background
The copper-coated steel bimetal composite material, also called copper-coated steel (or copper-coated steel), is a composite conductor formed by processing two metals of copper and steel through a special process, has the characteristics of high strength, excellent elasticity, larger thermal resistance and high magnetic permeability of steel, good electric conductivity and excellent corrosion resistance of copper, and is widely applied to the fields of electricity, electronics and the like.
At present, there are three main methods (electroplating method, cladding method and horizontal continuous casting cladding method) for coating copper on the surface of a steel wire in China, wherein the horizontal continuous casting cladding method solves the problems of thinner electroplated copper layer and poor cladding method combination, and is a production method commonly used by domestic manufacturers. The production process of the horizontal continuous casting cladding method comprises a steel wire pretreatment process, a copper melting process, a crystallization process and a post-treatment process. The crystallization step is a core step of the horizontal continuous casting cladding method, and is directly related to the thickness of a copper layer clad on the surface of a steel wire. Although the steel wire is preheated before entering the copper liquid, the melting point temperature of copper is 1083.4 ℃, in addition, cooling water is introduced into the crystallizer, and the temperature of the steel wire in the crystallizer is lower than the temperature of the copper liquid, so that the temperature difference exists between the crystallizer and the copper liquid, the copper liquid solidification phenomenon exists at the joint of the copper liquid and the crystallizer, the complete contact between the copper liquid and the steel wire is influenced, and the problems of uneven thickness, poor combination and poor coating quality of a copper layer coated on the steel wire easily occur.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the crystallizer among the prior art because of there being the difference in temperature with the copper liquid, influence the complete contact of copper liquid and copper wire, appear covering easily that copper layer thickness on the copper wire is inhomogeneous, combine not good and cladding quality is poor defect to provide a crystallizer, copper melting furnace and have its copper cover steel production line.
In order to solve the above problem, the present invention provides a crystallizer, comprising:
the fixing sleeve is provided with a first through hole;
the first end of the cooling pipe is arranged in the first through hole, and the cooling pipe is provided with a channel allowing a steel wire to pass through;
irritate the injection mould, the part is located in the first through-hole, and with the first end butt joint setting of cooling tube, it is equipped with the permission to irritate the injection mould the second through-hole that the copper wire passed, the copper wire with leave the clearance between the inner wall of second through-hole in advance, it exposes has at least one filling hole that allows the copper liquid inflow to have on the outside lateral wall of first through-hole to irritate the injection mould, filling hole with second through-hole intercommunication sets up, and axis mutually perpendicular, so that the warp copper liquid that the filling hole got into covers in irritate the surface of injection mould and the copper wire in the cooling tube.
Optionally, the pouring hole is a plurality of holes that are evenly distributed on the circumferential side wall of the pouring mold at equal intervals, and the pouring mold is made of graphite.
Optionally, the cooling pipe comprises a water inlet and a water outlet, and a cooling water channel for communicating the water inlet and the water outlet, the water inlet and the water outlet are provided at the second end of the cooling pipe, so that the cooling water channel forms a "C" shaped structure, and the first end of the cooling pipe is an inlet end of the steel wire.
Optionally, a joint is sleeved outside the second end of the cooling pipe, the joint is adapted to the cooling pipe, and an inlet and an outlet are respectively arranged at positions corresponding to the water inlet and the water outlet.
Optionally, the inner diameter of the cooling tube is arranged with a constant diameter.
Optionally, the cooling device further comprises a core fixing die arranged in the second through hole, the core fixing die is provided with a core fixing hole, the core fixing hole is in clearance fit with a steel wire penetrating through the core fixing hole, and the inner diameter of the core fixing die is the same as the inner diameter of the cooling pipe in size.
Still provide a copper melting furnace, including foretell crystallizer, the export of copper melting furnace is located to the crystallizer.
Optionally, the crystallizer further comprises a pair of fixed blocks arranged at an opposite interval, each fixed block is provided with a mounting hole, and the fixed sleeves of the pair of crystallizers are respectively arranged in the mounting holes.
Optionally, the two fixing sleeves are coaxially arranged, and the inner diameter of the cooling pipe of the crystallizer at the inlet of the copper melting furnace is gradually increased from the first end to the second end.
Still provide a copper and cover steel production line, including foretell copper melting furnace.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a crystallizer, include: the fixing sleeve is provided with a first through hole; the first end of the cooling pipe is arranged in the first through hole, and the cooling pipe is provided with a channel allowing a steel wire to pass through; the pouring mold is partially arranged in the first through hole and is in butt joint with the first end of the cooling pipe, the pouring mold is provided with a second through hole allowing a steel wire to pass through, a gap is reserved between the steel wire and the inner wall of the second through hole, the pouring mold is exposed on the outer side wall of the first through hole and provided with at least one pouring hole allowing copper liquid to flow in, and the pouring hole is communicated with the second through hole so that the copper liquid entering through the pouring hole covers the surface of the steel wire in the pouring mold and the cooling pipe. The fixed cover is provided with a first through hole, the cooling pipe and the filling mold are arranged in the first through hole and are butted, so that a steel wire penetrating through the second through hole of the filling mold smoothly enters a channel of the cooling pipe. In the process of covering the steel with the copper, the pouring mold extending out of the fixing sleeve is in contact with the molten copper, a pouring hole is formed in the side wall, exposed outside the first through hole, of the pouring mold and communicated with the second through hole, the copper enters the pouring mold and the cooling pipe in butt joint with the pouring mold from the pouring hole formed in the pouring mold, so that the copper and the steel wire are in complete contact in the pouring mold and the cooling pipe, and the copper is conveniently covered on the surface of the steel wire. In the process of pouring the molten copper into the mold, the region of the pouring hole is always contacted with the molten copper so that temperature difference does not exist between the region and the molten copper, the molten copper can smoothly flow onto the surface of a steel wire, the phenomenon that the molten copper is solidified at the joint of the molten copper and the crystallizer due to the temperature difference between the crystallizer and the molten copper is avoided, the molten copper is completely contacted with the steel wire, the thickness of a copper layer is ensured to be uniform, and the cladding of the molten copper on the steel wire is realized so as to improve the cladding quality. And the axes of the filling hole and the second through hole are mutually vertical, so that the copper liquid flows to the surface of the steel wire at the highest speed, and the solidification phenomenon of the copper liquid is further avoided.
2. The utility model provides a crystallizer, the filling hole is a plurality of for locating equidistant evenly distributed on the circumference lateral wall of the injection mould, and a plurality of filling holes can make copper liquid flow in the copper wire from the equidirectional on the surface, make the copper liquid cover more evenly on the copper wire surface. The pouring mold is made of graphite, the graphite has good thermal conductivity and chemical corrosion resistance, does not react with copper solution, has strength increased along with temperature rise at high temperature, and can be used for manufacturing molds with complex shapes and high precision.
3. The utility model provides a crystallizer, cooling tube include water inlet and delivery port to and be used for the cooling water course of intercommunication water inlet and delivery port, the second end of cooling tube is located to water inlet and delivery port, so that the cooling water passageway forms "C" type structure, just the first end of cooling tube is the entrance point of copper wire. The design of the C-shaped structure ensures that cold water entering from the water inlet is fully subjected to heat exchange with the copper layer in the cooling pipe through the cooling water channel and then flows in a bending mode to reach the water outlet, so that the contact time of the cold water in the cooling water channel and the copper layer in the cooling pipe is prolonged, and the best effect of cooling the copper layer in the cooling pipe is realized. And the copper liquid enters from the filling hole, then exchanges heat with the cooling liquid in the cooling pipe, and has a smaller temperature difference with the cooling liquid in the flowing process, so that the copper liquid at the filling hole is prevented from solidifying when meeting water with too low temperature to block the filling hole, and the uniformity of covering copper is further ensured.
4. The utility model provides a crystallizer, the second of cooling tube holds the overcoat and is equipped with the joint, connects and cooling tube adaptation, and the position branch that corresponds with water inlet and delivery port is equipped with import and export, and the setting that connects is convenient for be connected with the water pipe.
5. The utility model provides a crystallizer, the internal diameter of cooling tube is the constant diameter setting, and the cooling tube that the constant diameter set up can effectively reduce manufacturing cost, still can take out the copper-clad copper wire smoothly.
6. The utility model provides a crystallizer, still including locating the core mould surely in the second through-hole, the core mould surely has the core hole, decides the core hole and passes the copper wire clearance fit who decides the core hole, and the internal diameter of deciding the core mould is the same with the internal diameter size of cooling tube. The clearance fit is used for realizing the relative motion between the steel wire and the core fixing hole. Meanwhile, the inner diameter of the fixed core mold is the same as the inner diameter of the cooling pipe, so that the thicknesses of the steel wire passing through the fixed core mold and the copper layer coated on the steel wire are always kept uniform.
7. The utility model provides a copper melting furnace still includes a pair of fixed block that relative interval set up, and each fixed block has the mounting hole, and in the mounting hole was located respectively to the fixed cover of a pair of crystallizer, two fixed coaxial settings of cover. The fixed sleeve is internally sleeved with the fixed core mold, and the fixed core mold of the coaxially arranged fixed sleeve is also coaxially arranged, so that the coaxiality of steel wires passing through the pair of fixed core molds which are oppositely arranged is ensured, copper liquid can be uniformly coated on the steel wires, and further a copper-coated steel product with uniform thickness is obtained. And the inner diameter of a cooling pipe of the crystallizer positioned at the inlet of the copper melting furnace is gradually increased from the first end to the second end, so that air in the cooling pipe is emptied.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a crystallizer provided in an embodiment of the present invention;
fig. 2 is a schematic view of the water flow direction of the cooling pipe provided in the embodiment of the present invention;
fig. 3 is a half sectional view of an end-extending crystallizer provided in an embodiment of the present invention;
fig. 4 is a schematic top view of a copper melting furnace according to an embodiment of the present invention.
Description of reference numerals: 1. a water inlet; 2. a water outlet; 3. a cooling tube; 4. fixing a sleeve; 5. filling and molding the mold; 6. filling a hole; 7. fixing a core mold; 8. a joint; 9. a connecting port; 10. a fixed block; 11. a steel wire; 12. high temperature resistant bricks; 13. asbestos; 14. and (5) melting the copper material.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
One embodiment of the copper melting furnace shown in fig. 1-4 comprises: asbestos 13, a first layer of high temperature resistant bricks 12, a copper material to be melted 14 and a second layer of high temperature resistant bricks 12 which are arranged from outside to inside in sequence from the outer wall. Wherein, be equipped with relative interval in the second floor refractory brick 12 and be provided with a pair of fixed block 10, have a mounting hole in each fixed block 10, the fixed cover 4 of the crystallizer of melting copper stove import department and the fixed cover 4 of the crystallizer of melting copper stove exit locate the mounting hole respectively, be equipped with the copper wire 11 of waiting to cover copper between a pair of fixed cover 4. In order to ensure the uniformity of the thickness of the copper liquid coated on the steel wire 11, the two fixing sleeves 4 are arranged coaxially. In order to melt the copper material, a copper melting box is also arranged in the copper melting furnace, and a copper bar to be melted is placed in the copper melting box.
As shown in fig. 1, the crystallizer includes: a fixed sleeve 4, and a cooling pipe 3 and a pouring die 5 which are connected and arranged in a first through hole of the fixed sleeve 4. The cooling tube 3 is provided with a passage allowing the steel wire 11 to pass through, a first end is arranged in the first through hole, and a joint 8 is sleeved outside a second end. Specifically, the cooling pipe 3 is made of a copper pipe.
As shown in fig. 1, a part of the casting mold 5 is disposed in the first through hole of the fixing sleeve 4, and another part of the casting mold extends to the outside of the first through hole, the casting mold 5 is provided with a second through hole for allowing the steel wire 11 to pass through, and a gap is reserved between the steel wire 11 and the inner wall of the second through hole. In order to cover the copper liquid in the copper melting furnace on the steel wire 11 in the cooling pipe 3, 4 filling holes 6 are arranged on the exposed side wall of the filling die 5 at equal intervals along the circumferential direction, and the filling holes 6 are communicated with the second through hole. The material of the pouring mould 5 is graphite, which is suitable for the high temperature environment in the copper melting furnace.
As shown in fig. 1, the steel wire cooling device further comprises a core fixing die 7 arranged in the second through hole of the fixed sleeve 4, the core fixing die 7 is provided with a core fixing hole, the core fixing die 7 is in clearance fit with a steel wire 11 passing through the core fixing die 7, and the inner diameter of the core fixing die 7 is the same as the inner diameter of the cooling pipe 3. For high temperature resistance, the size of the inner diameter is guaranteed to be unchanged, the fixed core die 7 is made of boron nitride ceramics, and the fixed core die 7 made of the boron nitride ceramics has very high precision, so that the coaxiality of the steel wire 11 entering the hearth is guaranteed, and the thickness of a copper layer covering the steel wire 11 is more uniform.
As shown in fig. 2, the cooling pipe 3 includes a water inlet 1, a water outlet 2, and a cooling water passage for communicating the water inlet 1 and the water outlet 2, the water inlet 1 and the water outlet 2 are disposed at a second end of the cooling pipe 3, and the cooling water entering from the water inlet 1 flows through the C-shaped flow channel in the cooling water passage and then reaches the water outlet 2. Compared with the water outlet pipeline, the water inlet pipeline is closer to the steel wire, so that the cooling water can better cool the copper layer in the cooling pipe in the cooling water channel. In order to facilitate the connection of cooling water, the second end of the cooling pipe 3 is also sleeved with a connector 8 which is matched with the second end, and the connector 8 is respectively arranged at an inlet and an outlet which correspond to the water inlet 1 and the water outlet 2. In order to connect the cooling pipe 3 with other devices, a connecting port 9 is further provided on the side wall of the second end of the cooling pipe 3.
As shown in fig. 3, the crystallizer at the inlet of the copper melting furnace is different from the crystallizer at the outlet of the copper melting furnace in structure. The first end of the cooling pipe 3 is fixedly connected with a fixed sleeve, and the second end is sleeved with a joint 8. In order to avoid the interference of gases such as oxygen in the air on the crystallization process, a nitrogen interface is also arranged on the side wall of the second end of the cooling pipe 3.
The inner diameter of the cooling pipe 3 of the crystallizer at the inlet of the copper melting furnace is also arranged in a conical shape, i.e. the inner diameter from the first end to the second end is gradually increased. In the process of covering the steel with the copper, nitrogen gas filled into the nitrogen gas interface at the second end can fill the space between the steel wire and the cooling pipe 3 along with the reduction of the inner diameter, and meanwhile, the pressure in the hearth is higher than that of the crystallizer, namely, the steel wire can be discharged to the space between the cooling pipe 3 and the steel wire outwards by the nitrogen gas in the copper melting furnace in the process of extending into the steel wire, so that air in cooling is emptied, and the steel wire is prevented from being moved to the first end from the second end and is also provided with the air. In addition, the design that the inner diameter of the first end is smaller than that of the second end can enable the steel wire to smoothly enter the crystallizer, and the time for the steel wire to enter the crystallizer is shortened.
In the specific implementation process, charcoal is added into a hearth to consume oxygen in a copper melting furnace, and the copper melting furnace is electrified to dissolve a copper rod to be melted. Under the action of electromagnetic induction, the copper rod to be dissolved is slowly melted into copper liquid, and the liquid level height slowly exceeds the height of the steel wire 11 along with the increase of time. Before entering the copper melting furnace, the copper wire can preheat, and simultaneously, copper wire 11 adopts step-by-step removal mode, and namely, after a period of time, copper wire 11 removes a distance to guarantee copper liquid and copper wire 11's abundant contact. After entering the interior of the crystallizer at the outlet of the copper melting furnace, copper liquid enters the gap between the cooling pipe 3 and the steel wire 11 through the filling hole 6, cold water flows in through the inlet of the joint 8 and flows out along the cold water channel, the copper liquid is slowly cooled and coated on the surface of the copper wire in contact with the steel wire 11 to form a copper layer with softer texture and uniform thickness, and the steel wire in the crystallizer is pulled out by a traction mechanism arranged outside the outlet of the copper melting furnace to enter the cooling mechanism for cooling. It should be noted that the operator continuously adds the raw materials needed by the copper rod, the charcoal and the like into the copper melting furnace to ensure that the content of the copper liquid and the gas in the furnace always meet the production standard.
The utility model provides a crystallizer has that the precision is high, the axiality is high, and the enterprise of being convenient for develops continuity of production to obtain the even copper of thickness and cover the steel product.
The utility model also provides a copper cover steel production line, include the copper melting furnace.
As an alternative embodiment, the number of infusion orifices 6 may also be 1, 2, 3 or even more.
Alternatively, the inner diameter of the cooling pipe 3 of the crystallizer at the inlet of the copper melting furnace can also be arranged in a constant diameter mode.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (10)
1. A crystallizer, characterized in that it comprises:
the fixing sleeve (4), the said fixing sleeve (4) has the first through hole;
the first end of the cooling pipe (3) is arranged in the first through hole, and the cooling pipe (3) is provided with a channel allowing a steel wire (11) to pass through;
irritate injection mould (5), the part is located in the first through-hole, and with the first end butt joint setting of cooling tube (3), it is equipped with the permission to irritate injection mould (5) the second through-hole that copper wire (11) passed, copper wire (11) with reserve between the inner wall of second through-hole has the clearance, irritate injection mould (5) expose have at least one filling hole (6) that allow the copper liquid inflow on the outside lateral wall of first through-hole, filling hole (6) with second through-hole intercommunication sets up, and axis mutually perpendicular, so that the warp copper liquid that filling hole (6) got into cover in irritate the surface of copper wire (11) in injection mould (5) and cooling tube (3).
2. Crystallizer as in claim 1, characterized in that said pouring holes (6) are a plurality of holes uniformly distributed at equal intervals on the circumferential side wall of said pouring mold (5), said pouring mold (5) being made of graphite.
3. The crystallizer according to claim 1, characterized in that the cooling pipe (3) comprises a water inlet (1) and a water outlet (2), and a cooling water channel for communicating the water inlet (1) and the water outlet (2), the water inlet (1) and the water outlet (2) are arranged at the second end of the cooling pipe (3) so that the cooling water channel forms a "C" structure, and the first end of the cooling pipe (3) is the inlet end of the steel wire (11).
4. Crystallizer as in claim 3, characterized in that the second end of the cooling tube (3) is sheathed with a joint (8), said joint (8) being adapted to the cooling tube (3) and being provided with an inlet and an outlet respectively in correspondence of the water inlet (1) and outlet (2).
5. Crystallizer as in claim 1, characterized in that the internal diameter of said cooling tubes (3) is of constant diameter.
6. The crystallizer as claimed in any of claims 1-5, further comprising a core setting die (7) disposed in said second through hole, said core setting die (7) having a core setting hole, said core setting hole being clearance fitted with a steel wire (11) passing through said core setting hole, and the inner diameter of said core setting die (7) being the same size as the inner diameter of said cooling tube (3).
7. A copper melting furnace, characterized by comprising a crystallizer according to any one of claims 1 to 6, said crystallizer being provided at the outlet of the copper melting furnace.
8. The furnace according to claim 7, further comprising a pair of fixed blocks (10) oppositely arranged at intervals, each fixed block (10) having a mounting hole, the fixed sleeves (4) of a pair of crystallizers being respectively arranged in the mounting holes.
9. A furnace as claimed in claim 8, characterized in that said two housings (4) are coaxially arranged and the internal diameter of the cooling tube (3) of the crystalliser at the inlet of the furnace increases from a first end to a second end.
10. A copper-clad steel production line, characterized by comprising the copper melting furnace of any one of claims 7 to 9.
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CN202220676908.4U CN217492627U (en) | 2022-03-24 | 2022-03-24 | Crystallizer, copper melting furnace and copper-clad steel production line with same |
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CN202220676908.4U CN217492627U (en) | 2022-03-24 | 2022-03-24 | Crystallizer, copper melting furnace and copper-clad steel production line with same |
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