SCR continuous casting and rolling copper rod guide device, copper rod guide cooling device

Abstract

The present application discloses a copper rod guide device and copper rod guide cooling device for SCR continuous casting and rolling, comprising: a conduit with a bell mouth, an acid-free cleaning liquid supply sleeve, an acid-free cleaning liquid spray hole, and an acid-free cleaning liquid storage tank; a bell mouth is provided on the wire billet inlet end of the conduit with a bell mouth; an acid-free cleaning liquid supply sleeve is provided on the conduit with a bell mouth; the acid-free cleaning liquid spray hole is provided on the conduit with a bell mouth, and connects the acid-free cleaning liquid supply sleeve with the inner cavity of the conduit with a bell mouth; the liquid outlet of the acid-free cleaning liquid storage tank is connected to the liquid inlet pipeline of the acid-free cleaning liquid supply sleeve; the liquid inlet of the acid-free cleaning liquid storage tank is connected to the liquid outlet pipeline of the acid-free cleaning liquid supply sleeve. The structure can increase the contact distance between the wire billet and the device while ensuring the guidance of the copper wire billet after hot rolling, and supply the acid-free cleaning liquid separately to improve the cleaning and reduction effect of the wire billet surface.

Description

Technical Field

[0001] The present application relates to the technical field of copper material production, and in particular to a SCR continuous casting and rolling copper rod guide device and a copper rod guide cooling device. Background Art

[0002] SCR continuous casting and rolling production line, after hot rolling The surface temperature of the copper wire billet is 580-600℃, and it is impossible to completely isolate the air in the environment.

[0003] The nitrogen protection method and corresponding structure for SCR method casting copper wire billet disclosed in CN201611154380.X, the structure installs a nitrogen purge device at the front end of the casting liquid surface area, and a nitrogen spray ring is mounted on the casting pipe. The nitrogen sprayed by the nitrogen purge device protects the sputtered copper particles from oxygen. The nitrogen sprayed by the nitrogen spray ring covers the flow area of ​​the column flow, realizes the dilute oxygen protection of the column flow, and reduces the negative pressure formed around the column flow to inhale air and water vapor. However, the device has a complex structure, high investment cost and is not suitable for hot rolling. During the processing of copper wire billets, it is used for nitrogen flushing protection after hot rolling.

[0004] The surface of the high-temperature copper wire billet after hot rolling is very easy to be oxidized by contact with the air in the environment. In order to remove the oxide layer and ensure the brightness of the product, it is necessary to reduce and cool the oxide layer on the surface of the wire billet by immersing it in an acid-free cleaning solution (alkaline alcohol aqueous solution) to keep the final winding temperature above 50°C.

[0005] After the copper wire billet is cooled down during transportation in the stainless steel conduit, it passes through a In the cleaning box with stainless steel guides, the wire billet is kept in a fixed direction during the conveying process in the cleaning box, which is also conducive to segmented cleaning when the wire is blocked. The effective distance between the wire billet and the guide is only 30mm. Most of the wire billet in the cleaning box is in a non-cooling suspended state, and the surface of the copper wire billet that is directly in contact with the air is easily secondary oxidized.

[0006] During the production process, due to the fast passing speed of the copper wire billet and the small diameter of the copper wire billet, the guide will be worn and grooves will be formed in a short time. In the process of groove formation, the surface of the wire billet will be scratched, making the wire billet easy to break during the subsequent drawing process. It will also cause large fluctuations in the thickness of the oxide on the surface of the copper wire billet, affecting the quality of different sections of the copper wire billet.

[0007] The information disclosed in the background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in the field. Utility Model Content

[0008] In response to the above-mentioned technical problems, the present application provides a SCR continuous casting and rolling copper rod guide device, which can provide guidance for the copper wire billet after hot rolling while increasing the contact distance between the wire billet and the device, and separately supply acid-free cleaning liquid to improve the cleaning and reduction effect of the wire billet surface, avoid dry friction and extend the service life of the guide device.

[0009] The present application provides a SCR continuous casting and rolling copper rod guide device, comprising: a flared conduit, an acid-free cleaning liquid supply sleeve, an acid-free cleaning liquid spray hole, and an acid-free cleaning liquid storage tank;

[0010] A bell mouth is provided at the wire inlet end of the bell mouth conduit; an acid-free cleaning liquid supply sleeve is provided on the bell mouth conduit;

[0011] The acid-free cleaning liquid spray hole is arranged on the tube with a bell mouth, and is connected with the acid-free cleaning liquid supply sleeve and the inner cavity of the tube with a bell mouth;

[0012] The liquid outlet of the acid-free cleaning liquid storage tank is connected to the liquid inlet pipeline of the acid-free cleaning liquid supply sleeve;

[0013] The liquid inlet of the acid-free cleaning liquid storage tank is connected with the reflux outlet pipeline of the cleaning box.

[0014] Preferably, it comprises: a delivery pump; the delivery pump is arranged on a pipeline connecting the liquid outlet of the acid-free cleaning liquid storage tank and the liquid inlet of the acid-free cleaning liquid supply sleeve.

[0015] Preferably, it comprises: a reflux pump; the reflux pump is arranged on the liquid inlet of the acid-free cleaning liquid storage tank and the connected pipeline.

[0016] Preferably, the acid-free cleaning liquid supply sleeve comprises: a cover body and a connection interface; the cover body is arranged on the outer wall of the bell-mouthed conduit, and a cavity is left between the cover body and the outer wall of the bell-mouthed conduit; the connection interfaces are arranged in pairs on the outer wall of the cover body and are connected to the cavity.

[0017] Preferably, the cavity is communicated with each acid-free cleaning liquid spray hole.

[0018] Preferably, the acid-free cleaning liquid spray holes include: at least 4 spray holes; the spray holes are evenly spaced along the circumference of the cross section of the bell-mouthed conduit.

[0019] Another aspect of the present application provides a copper rod guide cooling device, characterized in that it comprises: a cleaning box; the SCR continuous casting and rolling copper rod guide device as mentioned above is installed in the cleaning box.

[0020] Preferably, a plurality of cleaning boxes are arranged at intervals; stainless steel conduits are arranged between adjacent cleaning boxes; and the stainless steel conduits are arranged in alignment with the SCR continuous casting and rolling copper rod guide device.

[0021] The beneficial effects of this application include:

[0022] 1) The SCR continuous casting and rolling copper rod guide device provided in the present application can increase the effective contact distance between the wire billet and the guide device, reduce the bearing load of the guide device on the wire billet, and a plurality of small holes perpendicular to the conveying direction of the wire billet are provided in the guide tube. The plurality of small holes spray hydraulic acid-free cleaning liquid to the wire billet, which can effectively partially offset the gravity exerted on the wire billet during the movement, so that the wire billet is in a suspended state during the conveying process, and avoids the friction between the wire billet and the guide device causing scratches, thereby ensuring the smoothness of the wire billet surface and increasing the effective cleaning area of ​​the wire billet surface, prolonging the reduction reaction time of the wire billet in contact with the acid-free cleaning liquid, and at the same time, the sprayed liquid flow can also improve the cooling effect of the wire billet during the conveying process, ensuring that the temperature of the wire billet can be stabilized at 50-55°C when the copper wire billet is off the line, effectively avoiding the secondary oxidation of the wire billet and the yellowing of the surface. After adopting the device, the thickness of the oxide layer on the surface of the produced wire billet can be stably controlled at the following. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a SCR continuous casting and rolling copper rod guide device in at least one embodiment provided in the present application;

[0024] Figure 2 A schematic diagram of the installation state of the copper rod guide device in at least one embodiment provided in the present application;

[0025] Figure 3 A cross-sectional schematic diagram of a tube with a bell mouth provided with small holes in at least one embodiment provided in the present application;

[0026] Legend:

[0027] A conduit with a bell mouth 1, an acid-free cleaning liquid supply sleeve 2, an acid-free cleaning liquid spray hole 3, a cover body 21, a connection interface 22, a liquid spray hole 31, an acid-free cleaning liquid storage tank 11, a delivery pump 13, a reflux pump 14, a bell mouth 12, a cleaning box 5, and a connecting rod 112. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0030] The technical means that are not described in detail in this application and are not used to solve the technical problems of this application are all set according to the common knowledge in the field, and can be implemented in a variety of common knowledge settings.

[0031] See also Figures 1 to 3 The SCR continuous casting and rolling copper rod guide device provided in the present application includes: a tube with a bell mouth 1, an acid-free cleaning liquid supply sleeve 2, and an acid-free cleaning liquid spray hole 3; a bell mouth is arranged on the first end of the tube with a bell mouth; the acid-free cleaning liquid supply sleeve 2 is arranged on the outer wall of the middle area of ​​the tube with a bell mouth 1, and is connected with the outer wall of the tube with a bell mouth 1; a accommodating cavity is arranged between the acid-free cleaning liquid supply sleeve 2 and the outer wall of the tube with a bell mouth 1, an acid-free cleaning liquid spray hole 3 is arranged on the outer wall of the tube with a bell mouth 1, and the acid-free cleaning liquid supply sleeve 2 is covered on the acid-free cleaning liquid spray hole 3.

[0032] An interface is provided on the outer wall of the acid-free cleaning liquid supply sleeve 2 and is connected to the pipeline of the acid-free cleaning liquid storage tank 11. The liquid inlet of the acid-free cleaning liquid storage tank 11 is connected to the reflux pipeline of the cleaning box 5. The device can be directly used in the cleaning box 5 of the SCR continuous casting and rolling equipment, and has the functions of reducing and cooling the copper rod. The equipment modification investment is small and the cost is low, and the use effect after improvement is good.

[0033] In a specific embodiment, it includes: a delivery pump 13; the delivery pump 13 is arranged on a pipeline connecting the acid-free cleaning liquid storage tank 11 and the acid-free cleaning liquid spray hole 3, so as to adjust the flow rate according to the pressure requirement to obtain the corresponding pressure liquid flow.

[0034] In a specific embodiment, the reflux pump 14 is provided on a pipeline connecting the acid-free cleaning liquid storage tank 11 and the liquid outlet of the acid-free cleaning liquid supply sleeve 2 to realize the circulation of the acid-free cleaning liquid in the acid-free cleaning liquid supply sleeve 2 .

[0035] In a specific embodiment, it includes: at least two valves; the valves are arranged on the pipelines where the delivery pump 13 and the reflux pump 14 are arranged, so as to realize effective control of the flow of the acid-free cleaning liquid.

[0036] In a specific embodiment, a plurality of acid-free cleaning liquid spray holes 3 are arranged at intervals on the bell-mouthed conduit 1; and a plurality of acid-free cleaning liquid supply sleeves 2 are respectively covered on the acid-free cleaning liquid spray holes 3. This realizes multi-point cooling and effective cleaning of the transported copper wire billets, maintains the spacing of the entire transport process, protects the copper wire billets, and achieves the purpose of effective cooling of water.

[0037] In a specific embodiment, the acid-free cleaning liquid spray hole 3 includes: at least 4 spray holes 31; the acid-free cleaning liquid spray holes 3 are arranged on the cross section of the bell-mouthed conduit 1; the center angle of any two adjacent spray holes on the cross section is 90°. According to this arrangement, the wire blank can be effectively and comprehensively flushed and cleaned, and the suspension can be achieved while increasing the cooling area.

[0038] In a specific embodiment, a through hole is provided inside the bell-mouthed conduit 1, and the diameter of the through hole is 19 mm. This arrangement can play a guiding role while avoiding dry friction of the wire blank.

[0039] In a specific embodiment, the diameter of the first end of the bell mouth 12 at one end of the bell mouth conduit 1 is 40 mm, and the diameter of the second end is 19 mm. This arrangement can facilitate the wire blank to enter the through hole when it swings.

[0040] In a specific embodiment, the acid-free cleaning liquid supply sleeve 2 includes: a cover body 21 and a connection interface 22; the cover body 21 is covered on the bell-mouthed conduit 1, and the connection interface 22 is arranged on the outer wall of the cover body 21, and the connection interface 22 is connected to the inner cavity of the cover body 21, and the cavity of the cover body 21 is connected to each liquid spray hole 31. The flow rate of the liquid entering the bell-mouthed conduit 1 can be increased. The connection interface 22 is arranged on the cover body 21, and is connected through a pipeline to serve as the liquid inlet of the acid-free cleaning liquid supply sleeve 2. The rinsed cleaning liquid flows into the cleaning box 5 from both ends of the bell-mouthed conduit 1, and refluxes through the reflux port at the bottom of the cleaning box 5.

[0041] In a specific embodiment, it includes: a connecting rod 112; the bell-mouthed conduit 1 is installed in the cleaning box 5 through the connecting rod 112. A reflux port is arranged at the bottom of the cleaning box 5, and the acid-free cleaning liquid is refluxed through the reflux port.

[0042] In a specific embodiment, the diameter of the liquid spraying hole 31 is 2.5 mm.

[0043] In one embodiment, there are four liquid spray holes 31, and the central angles of the holes are 90°. The liquid spray hole (31) is provided.

[0044] When using, Figure 1As shown in the figure, during the SCR continuous casting and rolling production process, after the copper wire billet leaves the rolling mill, it enters the acid-free cleaning system at a temperature of 580-600°C. In the cleaning box 5, the wire billet enters continuously and at high speed from the bell mouth 12 at one end of the bell mouth conduit 1. At the same time, the acid-free cleaning liquid supply sleeve 2 is supplied with acid-free cleaning liquid at a pressure of 0.6-0.8MPa from the external pipeline network. The acid-free cleaning liquid is supplied from four mutually 90° The liquid spraying hole (31) is sprayed into the guide device in a perpendicular direction to the wire blank, and the wire blank is evenly sprayed with the acid-free cleaning liquid in a suspended state and fully cleaned. At the same time, the sprayed acid-free cleaning liquid fills the inside of the guide device to avoid dry friction between the wire blank and the inner wall of the guide device. At the same time, the wire blank has an effective contact distance of 265 mm with the acid-free cleaning liquid in the guide device, so that the wire blank is fully cooled and the oxide on the surface of the wire blank is fully reduced. At the same time, the surface of the wire blank is protected to avoid damage and breakage during the subsequent pulling process.

[0045] Another aspect of the present application further provides a copper rod guide cooling device, comprising: a cleaning box 5; the above-mentioned device is arranged in the cleaning box.

[0046] In a specific embodiment, multiple cleaning boxes are provided; the above devices between the cleaning boxes are connected by stainless steel guide rods, which facilitates the normal advancement of the copper wire blank. By connecting multiple of the above devices in series, effective cleaning of the copper rod can be achieved.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A SCR continuous casting and rolling copper rod guide device, characterized in that: include: A bell-mouthed conduit (1), an acid-free cleaning liquid supply sleeve (2), an acid-free cleaning liquid spray hole (3), and an acid-free cleaning liquid storage tank (11); A bell mouth (12) is provided at the wire blank inlet end of the bell mouth conduit (1); an acid-free cleaning liquid supply sleeve (2) is provided on the bell mouth conduit (1); The acid-free cleaning liquid spray hole (3) is formed on the bell-mouthed conduit (1) and communicates with the acid-free cleaning liquid supply sleeve (2) and the inner cavity of the bell-mouthed conduit (1); The liquid outlet of the acid-free cleaning liquid storage tank (11) is connected to the liquid inlet pipeline of the acid-free cleaning liquid supply sleeve (2); The liquid inlet of the acid-free cleaning liquid storage tank (11) is communicated with the reflux outlet pipeline of the cleaning box (5).

2. The SCR continuous casting and rolling copper rod guide device according to claim 1, characterized in that: include: The delivery pump (13) is arranged on a pipeline connecting the liquid outlet of the acid-free cleaning liquid storage tank (11) and the liquid inlet of the acid-free cleaning liquid supply sleeve (2).

3. The SCR continuous casting and rolling copper rod guide device according to claim 1, characterized in that: include: A reflux pump (14); the reflux pump (14) is arranged on the liquid inlet of the acid-free cleaning liquid storage tank (11) and the connected pipeline.

4. The SCR continuous casting and rolling copper rod guide device according to claim 1, characterized in that: The acid-free cleaning liquid supply sleeve (2) comprises: a cover body (21) and a connection interface (22); the cover body (21) is arranged on the outer wall of the bell-mouthed conduit (1), and a cavity is left between the cover body and the outer wall of the bell-mouthed conduit (1); the connection interface (22) is arranged in pairs on the outer wall of the cover body (21) and is connected to the cavity.

5. The SCR continuous casting and rolling copper rod guide device according to claim 4, characterized in that: The cavity is communicated with each acid-free cleaning liquid spray hole (3).

6. The SCR continuous casting and rolling copper rod guide device according to claim 1, characterized in that: The acid-free cleaning liquid spray holes (3) include at least four spray holes (31); the spray holes (31) are evenly spaced along the circumference of the cross section of the bell-mouthed conduit (1).

7. A copper rod guide cooling device, characterized in that: include: A cleaning box (5); the SCR continuous casting and rolling copper rod guide device according to any one of claims 1 to 6 is installed in the cleaning box (5).

8. The copper rod guide cooling device according to claim 7, characterized in that: A plurality of cleaning boxes (5) are arranged at intervals; a stainless steel conduit is arranged between adjacent cleaning boxes (5); and the stainless steel conduit is arranged in alignment with the SCR continuous casting and rolling copper rod guide device.

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