Casting wheel assembly of SCR continuous casting machine

Abstract

The utility model relates to the technical field of non-ferrous metallurgy industry, in particular to a cast wheel assembly of an SCR continuous casting machine. Cast wheel clamping plates are installed on the two sides of the cast wheel to form a semi-open groove-shaped space, and the cast wheel is provided with an inner water cooling face and a side water cooling face. A plurality of drainage holes are formed in the plate face of the cast wheel clamping plate in the axial direction, a plurality of oblique tooth grooves are formed in the inner water cooling face, the two ends of each oblique tooth groove are communicated with the drainage holes, and radial tooth grooves are formed in the surface of each side water cooling face. The overall cooling efficiency of SCR continuous casting can be remarkably improved, so that the higher continuous casting speed is allowed under the current spraying water cooling condition, and the production efficiency can be improved; the overall cooling efficiency of SCR continuous casting can be obviously improved, and the production energy consumption is reduced; the grain growth speed of the trapezoidal-section casting blank in the direction perpendicular to the four side faces can be effectively balanced, so that the uniformity of the solidification structure of the casting blank can be improved, and the final product quality is improved; only a small amount of materials need to be removed from original parts through simple machining, and the method is low in input and high in return.

Description

Technical Field

[0001] The utility model relates to the technical field of nonferrous metallurgy industry, in particular to a casting wheel assembly of an SCR continuous casting machine. Background Art

[0002] SCR is the abbreviation of Southwire Continuous Rod System / Technology. In the copper rod and wire manufacturing industry, it generally refers to the copper rod continuous casting and rolling production system (production technology) developed by Southwire Corporation in the United States.

[0003] SCR continuous casting equipment is a unique ring-shaped system whose main components include a copper alloy casting wheel, a low-carbon steel casting wheel mounting plate, a stainless steel belt, a belt tensioning and drive pulley assembly, an open spray water cooling module, and other control and power components. During the SCR continuous casting process, the uniformly rotating casting wheel is in close contact with the synchronously conveyed steel belt. Molten copper is continuously poured into the solidification cavity formed by the steel belt and casting wheel. Water spray cooling the outer surfaces of the steel belt and casting wheel gradually solidifies the copper in the solidification cavity into a cast billet, which is then continuously pulled out.

[0004] In existing SCR continuous casting equipment, the water-cooling surface inside the casting wheel and the fixed plates on either side form a semi-open trough-like space. After cooling water is sprayed into this trough-like space, it is restricted by the fixed plates and can only slide down along the water-cooling surface inside the casting wheel. As the cooling water slides down, it is heated by the casting wheel and gradually heats up, forming a thick layer of high-temperature water on the water-cooling surface inside the casting wheel. Ultimately, it accumulates into an overflowing, circular, high-temperature pool at the very bottom of the casting wheel. The presence of this high-temperature water layer and pool significantly reduces water cooling efficiency, limiting the increase in continuous casting speed and, in turn, production efficiency.

[0005] Furthermore, while the thermal conductivity of the casting wheel in existing SCR continuous casting equipment is higher than that of the steel strip, the thickness of the casting wheel is much greater than that of the steel strip. This results in different grain growth rates perpendicular to the four sides of the trapezoidal cross-section ingot, reducing the uniformity of the solidification structure and, in turn, adversely affecting the quality of the final product. The present invention addresses these shortcomings of existing SCR continuous casting equipment by focusing on the structural design of key components and developing an SCR continuous casting wheel assembly. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: in order to solve the problems existing in the prior art in the above-mentioned background technology, a SCR continuous casting wheel assembly is provided to improve the overall cooling efficiency of SCR continuous casting and improve the quality of the final product.

[0007] The technical solution adopted by the utility model to solve the technical problem is: an SCR continuous casting machine casting wheel assembly, including a casting wheel and a casting wheel clamping plate, the casting wheel clamping plates are installed on both sides of the casting wheel to form a semi-open groove-shaped space, and the casting wheel has an inner water-cooling surface and a side water-cooling surface; a plurality of drainage holes are axially opened on the plate surface of the casting wheel clamping plate, a plurality of oblique tooth grooves are opened on the inner water-cooling surface, both ends of the oblique tooth grooves are connected to the drainage holes, and radial tooth grooves are opened on the surface of each side water-cooling surface.

[0008] Furthermore, the upper edge of the drainage hole is higher than the edge of the inner water-cooling surface, which can ensure that both ends of the oblique tooth groove are connected to the drainage hole, thereby ensuring smooth drainage.

[0009] Furthermore, an angle ɑ is formed between the central axis of the helical tooth groove and the side water-cooling surface, and the angle ɑ is 35° to 60°.

[0010] Furthermore, the tooth profiles of the helical tooth grooves and the radial tooth grooves are both equilateral triangles, and the helical tooth grooves and the radial tooth grooves are both helical tooth grooves and radial tooth grooves processed by gear shaping.

[0011] Furthermore, the side surfaces of both ends of the oblique tooth groove are lower than the side water-cooling surface, and both ends of the oblique tooth groove and the radial tooth groove pass through the boundary of the water-cooling surface.

[0012] Furthermore, an extension line of the central axis of the radial tooth groove passes through the center of the casting wheel.

[0013] Furthermore, the tooth profile angle β of the helical tooth groove is 50° to 70°.

[0014] Furthermore, a notch is provided at the inner edge of the upper end of the casting wheel clamping plate, and the inner side surface of the notch is inclined from top to bottom for fixing the casting wheel.

[0015] Furthermore, the span angle γ at both ends of the drainage hole is 25° to 40°.

[0016] Beneficial effects of the utility model:

[0017] 1) It can significantly improve the overall cooling efficiency of SCR continuous casting, thus allowing higher continuous casting speeds under current spray water cooling conditions, which is conducive to improving production efficiency;

[0018] 2) It can significantly improve the overall cooling efficiency of SCR continuous casting, thereby allowing lower spray water cooling intensity at the current continuous casting speed, which is conducive to reducing production energy consumption;

[0019] 3) It can effectively balance the grain growth rate of the trapezoidal cross-section ingot perpendicular to its four side surfaces, thereby improving the uniformity of the ingot solidification structure and improving the quality of the final product;

[0020] 4) The existing problem is solved without adding any parts, and only a small amount of material needs to be removed from the original parts through simple machining, which is a low-investment and high-return solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 It is a partial structural diagram of the utility model;

[0024] Figure 3 This is a schematic structural diagram of the casting wheel of the utility model;

[0025] Figure 4 It is a cross-sectional view of the casting wheel of the utility model taken along the DD direction;

[0026] Figure 5 This is a partial enlarged view of position C of the casting wheel of the present invention;

[0027] Figure 6 This is a structural diagram of the casting wheel splint of the utility model;

[0028] Figure 7 It is a cross-sectional view of the casting wheel splint of the utility model taken along the AA direction;

[0029] Figure 8 It is a cross-sectional view of the casting wheel splint of the utility model taken along the BB direction;

[0030] In the figure: 1. Cast wheel, 2. Cast wheel clamp, 3. Inner water-cooling surface, 4. Side water-cooling surface, 5. Drain hole, 6. Oblique tooth groove, 7. Radial tooth groove, 9. Notch. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0032] like Figures 1 to 8 The SCR continuous casting machine casting wheel assembly shown includes a casting wheel 1 and two casting wheel clamping plates 2. The casting wheel clamping plates 2 are installed on both sides of the casting wheel 1 to form a semi-open trough-shaped space. The casting wheel 1 has an inner water-cooling surface 3 and a side water-cooling surface 4.

[0033] like Figures 6-8 As shown, a plurality of drainage holes 5 are provided on the plate surface of the casting wheel clamping plate 2 along the axial direction to prevent water from accumulating at the bottom of the casting wheel 1. The high-temperature water that slides to the bottom of the casting wheel 1 can be discharged in time.

[0034] In addition, if Figure 2 As shown, the upper edge of the drain hole 5 is higher than the edge of the inner water-cooling surface 3, ensuring that the high-temperature water inside the casting wheel can be discharged smoothly without obstruction;

[0035] like Figures 3-5 As shown, a plurality of beveled grooves 6 are formed on the inner water-cooling surface 3. The tooth profile angle β of the beveled grooves 6 is 50° to 70°, preferably 60°. Both ends of the beveled grooves 6 are connected to the drainage holes 5 to prevent the high-temperature water from sliding down and forming a thick water layer on the inner water-cooling surface of the casting wheel. During the sliding process, the high-temperature water can be guided by the beveled grooves 6 to the drainage holes 5 of the casting wheel clamping plate 2 for timely discharge. In addition to the diversion and drainage functions, the beveled grooves 6 on the inner water-cooling surface 3 of the casting wheel also increase the local heat dissipation area and improve the local cooling efficiency, thereby offsetting the adverse effect caused by the casting wheel 1 being much thicker than the steel strip.

[0036] The span angle γ at both ends of the drainage hole 5 is 25° to 40°, preferably 30°. The drainage hole 5 can be realized by side milling with a cylindrical milling cutter. The drainage hole 5 designed in this way can achieve a good drainage effect while meeting the structural rigidity.

[0037] Each side water-cooling surface 4 is provided with radial tooth grooves 7 to increase the local heat dissipation area.

[0038] An included angle ɑ is formed between the central axis of the helical tooth groove 6 and the side water-cooling surface 4. The included angle ɑ is 35° to 60°, and preferably the included angle ɑ is 45°.

[0039] At the same time, the tooth profiles of the oblique tooth grooves 6 and the radial tooth grooves 7 are both equilateral triangles, the oblique tooth grooves 6 and the radial tooth grooves 7 are both the oblique tooth grooves and radial tooth grooves processed by gear shaping, and the tooth spacing of the oblique tooth grooves 6 and the radial tooth grooves 7 is 6 mm.

[0040] The side surfaces at both ends of the bevel tooth groove 6 are lower than the side water-cooling surface 4, and both ends of the bevel tooth groove 6 and the radial tooth groove 7 pass through the boundary of the water-cooling surface. In order to avoid the tooth top burrs causing harm to workers, a slight grinding process is performed, and the tooth top can be ground off 0.5mm.

[0041] At the same time, the extension line of the central axis of the radial tooth groove 7 passes through the center of the casting wheel 1.

[0042] A notch 9 is provided at the inner edge of the upper end of the casting wheel clamping plate 2 , and the inner side surface of the notch 9 is inclined downward.

[0043] In summary, the present application can significantly improve the overall cooling efficiency of SCR continuous casting, thereby allowing a higher continuous casting speed under the current spray water cooling conditions, which is conducive to improving production efficiency; it can significantly improve the overall cooling efficiency of SCR continuous casting, thereby allowing a lower spray water cooling intensity under the current continuous casting speed, which is conducive to reducing production energy consumption; it can effectively balance the grain growth rate of the trapezoidal cross-section ingot perpendicular to its four side directions, thereby improving the uniformity of the ingot solidification structure, which is conducive to improving the quality of the final product; it solves the existing problems without adding any parts, and only requires removing a small amount of material from the original parts through simple machining, which is low investment and high return.

[0044] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A casting wheel assembly for an SCR continuous casting machine, characterized in that: The invention comprises a casting wheel (1) and a casting wheel clamp (2), wherein the casting wheel clamp (2) is installed on both sides of the casting wheel (1) to form a semi-open groove-shaped space, and the casting wheel (1) has an inner water-cooling surface (3) and a side water-cooling surface (4); A plurality of drainage holes (5) are provided on the plate surface of the casting wheel clamping plate (2) along the axial direction, a plurality of oblique tooth grooves (6) are provided on the inner water cooling surface (3), both ends of the oblique tooth grooves (6) are connected to the drainage holes (5), and a radial tooth groove (7) is provided on the surface of each side water cooling surface (4).

2. The SCR continuous casting wheel assembly according to claim 1, characterized in that: The upper edge of the drainage hole (5) is higher than the edge of the inner water cooling surface (3).

3. The SCR continuous casting machine casting wheel assembly according to claim 1, characterized in that: An angle ɑ is formed between the central axis of the helical tooth groove (6) and the side water-cooling surface (4), and the angle ɑ is 35° to 60°.

4. The SCR continuous casting machine casting wheel assembly according to claim 1, characterized in that: The tooth profiles of the helical tooth grooves (6) and radial tooth grooves (7) are both equilateral triangles, and the helical tooth grooves (6) and radial tooth grooves (7) are both helical tooth grooves and radial tooth grooves processed by gear shaping.

5. The SCR continuous casting machine casting wheel assembly according to claim 1, characterized in that: The side surfaces of both ends of the oblique tooth groove (6) are lower than the side water-cooling surface (4), and both ends of the oblique tooth groove (6) and the radial tooth groove (7) penetrate the boundaries of the water-cooling surface.

6. The SCR continuous casting machine casting wheel assembly according to claim 1, characterized in that: The extension line of the central axis of the radial tooth groove (7) passes through the center of the casting wheel (1).

7. The SCR continuous casting machine casting wheel assembly according to claim 1, characterized in that: The tooth profile angle β of the helical tooth groove (6) is 50° to 70°.

8. The SCR continuous casting machine casting wheel assembly according to claim 1, characterized in that: A notch (9) is provided at the inner edge of the upper end of the casting wheel clamping plate (2), and the inner side surface of the notch (9) is inclined from top to bottom.

9. The SCR continuous casting machine casting wheel assembly according to claim 1, characterized in that: The span angle γ at both ends of the drainage hole (5) is 25° to 40°.

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