Horizontal continuous casting graphite die

Abstract

The utility model discloses a horizontal continuous casting graphite die, and relates to the technical field of casting equipment, the horizontal continuous casting graphite die comprises a hollow die body with the length of 480 mm and a die core arranged in the die body, and a casting cavity is formed between the hollow die body and the die core; a plurality of liquid injection holes with the diameter of 8mm are formed in the same plane 63mm away from one end of the die body at equal angles, and the axial directions of the plurality of liquid injection holes are obliquely arranged along the same circumferential direction; an exhaust hole is formed in the mold body, an included angle of 45 degrees is formed between the exhaust hole and the mold body, and the outer end of the exhaust hole in the mold body and the liquid injection holes are located in the same plane; and a nitrogen channel is formed in the other end of the die body. Therefore, the problems existing in existing pipe blank production are solved, the quality stability of pipe blank production is improved, and the yield and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting equipment, in particular to a horizontal continuous casting graphite mold. BACKGROUND

[0002] The horizontal continuous casting has the characteristics of low cost, small energy consumption, high efficiency and high material yield, and thus has been widely applied. The graphite mold is an important part, which is generally composed of a mold body and a mold core, and a casting cavity is formed between the mold body and the mold core. The space is a cooling crystallization chamber for copper liquid. The structure design of the graphite mold determines the quality of the produced pipe blank.

[0003] In the actual production process, there are many problems. In the casting process, the angle and size of the liquid inlet hole of the graphite mold affect the speed of casting formation, and the flow speed of the cooling water affects the cooling speed. Due to unreasonable design of the mold, the quality of the produced pipe blank is unstable. After the copper liquid enters, the mixing speed is slow, and it cannot be fully mixed before cooling decay, resulting in uneven grain size, coarse continuous casting grain, and sometimes insufficient cooling, resulting in pores and cold separation in the continuous casting pipe blank. In summary, the yield is not high, and the production efficiency is affected. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the existing problems in the production of pipe blank, improve the quality stability of pipe blank production, and improve the yield and production efficiency, the present application provides a horizontal continuous casting graphite mold.

[0005] The horizontal continuous casting graphite mold provided by the present application adopts the following technical scheme.

[0006] A horizontal continuous casting graphite mold, comprising a mold body with a length of 480mm and a hollow setting, and a mold core arranged in the mold body, wherein a casting cavity is formed between the hollow mold body and the mold core; a plurality of liquid injection holes with a diameter of 8mm are arranged at equal angles in the same plane at a distance of 63mm from one end of the mold body, and the axial directions of the plurality of liquid injection holes are inclined to be arranged along the same circumferential direction; an exhaust hole is arranged on the mold body, the exhaust hole forms an angle of 45° with the mold body, and the outer end of the exhaust hole on the mold body is in the same plane as the plurality of liquid injection holes; and a nitrogen gas passage is arranged at the other end of the mold body.

[0007] By adopting the above technical scheme, the hollow mold body and the mold core form a casting cavity, the copper liquid enters from the plurality of inclined liquid injection holes, forms a rotating trend after entering, can be fully mixed and uniform, has few bubbles, and the gas is discharged through the exhaust hole. The pipe blank is formed by cooling, the cooling process temperature of the pipe blank in the casting cavity is flat, the cooling quality is stable, and pores and cold separation will not occur. The pipe blank can be fully mixed before cooling decay, the grain size is uniform, and nitrogen gas can be introduced into the casting cavity through the nitrogen gas passage to prevent oxidation of the pipe blank during casting.

[0008] Optionally, one end of the mold core is provided with a connecting part, the connecting part is arranged in one end of the mold body, and the mold body and the connecting part are connected through bolts.

[0009] By adopting the technical scheme, the mold core is connected with the mold body through bolts, the connection mode is simple and reliable, the cost is low, and assembly is facilitated.

[0010] Optionally, the inner hole of one end of the mold body is counterbored.

[0011] By adopting the technical scheme, the inner hole of one end of the mold body is counterbored, so that the connecting part of the mold core can be better assembled and connected with the mold body, assembly of the mold core is facilitated, and a certain sealing effect is achieved, so that the copper liquid is prevented from flowing out.

[0012] Optionally, the connecting part and the mold core are chamfered.

[0013] Optionally, four liquid injection holes are arranged, and the liquid injection holes include, in sequence in a clockwise direction, a liquid injection hole A, a liquid injection hole B, a liquid injection hole C and a liquid injection hole D, an included angle between an axis of the liquid injection hole A and an axis of the exhaust hole is 10°, axes of two adjacent liquid injection holes are perpendicular to each other, and axes of two opposite liquid injection holes are parallel to each other.

[0014] By adopting the technical scheme, the inclination angle of the liquid injection hole is arranged, so that the speed of the copper liquid flowing into the casting cavity can be improved, the angle is adjusted to make the copper liquid rotate and flow into the casting cavity, so that a rotating stirring effect is generated, the copper liquid is fully mixed, fine and uniform grains are generated when the copper liquid solidifies, and grain uniformity is ensured.

[0015] Optionally, the nitrogen channel includes an outer nitrogen hole extending to one end of the mold body and having a length of 80 mm, the outer nitrogen hole is in the same plane as the exhaust hole, a groove is arranged at one end of the outer nitrogen hole along the annular mold body, and the groove and the inner wall of the mold body are connected through a plurality of inner nitrogen holes.

[0016] By adopting the technical scheme, the outer nitrogen hole is arranged, so that the nitrogen gas is connected, the groove and the plurality of inner nitrogen holes are arranged, the nitrogen gas connected by the outer nitrogen hole is dredged from the annular four sides to the casting cavity, nitrogen gas is uniformly connected, and the anti-oxidation effect of the nitrogen gas is ensured.

[0017] Optionally, the mold body is in a cylindrical shape with an inner hole diameter of 94 mm.

[0018] Optionally, the other end of the mold core is flush with, protrudes from or is recessed into the other end of the mold body.

[0019] Through the above technical scheme, the other end of the mold core is flush with, extends out of or is recessed in the other end of the mold body, that is, the length of the mold core is different, which can be adjusted according to the drawing speed of the pipe blank, that is, the output speed of the pipe blank, and is also related to the cooling speed, so that the pipe blank can be fully cooled before being separated from the mold core, the support and guidance of the pipe blank which is not fully cooled are ensured, the deformation of the pipe blank due to incomplete cooling is prevented, and the quality of the pipe blank is affected.

[0020] Optionally, the diameter of one end of the mold core is greater than the diameter of the other end.

[0021] In summary, the present application at least includes the following beneficial effects:

[0022] 1. In the present application, a casting cavity is formed between the hollow mold body and the mold core, the copper liquid enters from the plurality of inclined liquid injection holes, the liquid injection holes are provided with four, and the liquid injection holes A, B, C and D are sequentially arranged in the clockwise direction, the angle between the axis of the liquid injection hole A and the exhaust hole is 10°, the axes of the adjacent two liquid injection holes are perpendicular, and the axes of the opposite two liquid injection holes are parallel. Through the inclination angle setting of the liquid injection hole, the speed of the copper liquid entering the casting cavity can be improved, the angle size is adjusted to make it rotate and flow into the casting cavity, so as to produce a rotating stirring effect, so that the copper liquid flows and mixes fully, so that fine and uniform grains can be generated when the copper liquid solidifies, the grain size is uniform, the mixing is fully and uniformly, the bubbles are few, the gas is discharged through the exhaust hole, and the pipe blank is formed after cooling. The cooling process temperature of the pipe blank in the casting cavity is gentle, the cooling quality is stable, no pores and cold separations are generated, the mixture can be fully mixed before cooling attenuation, and the grain size is uniform.

[0023] 2. Through the setting of the nitrogen gas channel, nitrogen gas can be introduced into the casting cavity to prevent the pipe blank from being oxidized during the casting process. The setting of the outer nitrogen gas hole facilitates the connection of nitrogen gas, and the setting of the groove and the plurality of inner nitrogen gas holes can introduce nitrogen gas from the annular four sides into the casting cavity, which is beneficial to improve the uniformity of the introduction of nitrogen gas and ensure the anti-oxidation effect of nitrogen gas.

[0024] 3. The other end of the mold core is flush with, extends out of or is recessed in the other end of the mold body, that is, the length of the mold core is different, which can be adjusted according to the drawing speed of the pipe blank, that is, the output speed of the pipe blank, and is also related to the cooling speed, so that the pipe blank can be fully cooled before being separated from the mold core, the support and guidance of the pipe blank which is not fully cooled are ensured, the deformation of the pipe blank due to incomplete cooling is prevented, and the quality of the pipe blank is affected. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0026] Figure 1 It is a horizontal continuous casting graphite mold structure schematic diagram.

[0027] Figure 2 It is Figure 1 The structure schematic diagram is shown along the section line A-A.

[0028] Figure 3 It is a mold body section structure schematic diagram.

[0029] Figure 4 It is Figure 3 The structure schematic diagram is shown along the section line B-B.

[0030] Figure 5 It is Figure 3 The structure schematic diagram is shown along the local A.

[0031] Figure 6 It is a mold core structure schematic diagram.

[0032] The drawing mark explanation: 1, mold body; 2, mold core; 3, casting cavity; 4, connecting part; 5, liquid injection hole A; 6, liquid injection hole B; 7, liquid injection hole C; 8, liquid injection hole D; 9, exhaust hole; 10, outer nitrogen hole; 11, groove; 12, inner nitrogen hole. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0034] The drawings will be combined below Figures 1 to 6 The present application will be further described in detail.

[0035] The embodiments of the present application disclose a horizontal continuous casting graphite mold.

[0036] Referring to Figures 1 to 6 A horizontal continuous casting graphite mold comprises:

[0037] The mold body 1 is a hollow cylinder with a length of 480 mm, an outer surface diameter of 120 mm, and an inner hole diameter of 94 mm. The inner hole of one end of the mold body 1 is expanded, i.e., the inner hole expansion diameter is 97 mm and the length is 50 mm. The expansion of the inner hole of one end of the mold body 1 allows the connecting part 4 of the mold core 2 to be better assembled and connected with the mold body 1, facilitating the assembly of the mold core 2 and also playing a certain sealing role to prevent the copper liquid from flowing out.

[0038] The mold core 2 has a total length of 480 mm and is located in the mold body 1. The hollow mold body 1 and the mold core 2 form a casting cavity 3 therebetween. Optionally, one end of the mold core 2 is provided with an integrated connecting part 4. The connecting part 4 has a length of 50 mm and a diameter of 97 mm. The connecting part 4 is rounded between the connecting part 4 and the body of the mold core 2. The connecting part 4 is arranged at one end of the mold body 1, and the mold body 1 and the connecting part 4 are fixedly connected by three bolts. The mold core 2 is connected with the mold body 1 by bolts. The connection method is simple and reliable, has low cost, and is convenient for assembly.

[0039] One end of the mold core 2 has a larger diameter than the other end. The diameter of one end of the mold core 2 is 48.6 mm at a position 58 mm from the end, and the diameter of the other end of the mold core 2 is 36.8 mm.

[0040] Four liquid injection holes with a diameter of 8 mm are arranged at the same plane 63 mm from one end of the mold body 1 at equal angles. The axial directions of the four liquid injection holes are inclined in the same circumferential direction. The four liquid injection holes include, in sequence in the clockwise direction, a liquid injection hole A5, a liquid injection hole B6, a liquid injection hole C7, and a liquid injection hole D8. The angle between the axes of the liquid injection hole A5 and the exhaust hole 9 is 10°. The axes of adjacent two liquid injection holes are perpendicular, and the axes of opposite two liquid injection holes are parallel. By adjusting the angle of the inclined liquid injection holes, the speed of the copper liquid entering the casting cavity 3 can be increased, and the copper liquid can be fully mixed by rotating and flowing into the casting cavity 3, so that fine and uniform grains can be generated when the copper liquid solidifies, ensuring uniform grain size.

[0041] The mold body 1 is provided with an exhaust hole 9 with a diameter of 6 mm, the exhaust hole 9 is at an angle of 45° with the mold body 1, and the outer end of the exhaust hole 9 is in the same plane with the four liquid injection holes on the mold body 1. The other end of the mold body 1 is provided with a nitrogen passage, the nitrogen passage includes an outer nitrogen hole 10 with a length of 80 mm and a diameter of 3 mm extending to one end of the mold body 1, and the outer nitrogen hole 10 is in the same plane with the exhaust hole 9, one end of the outer nitrogen hole 10 is annularly provided with a groove 11 along the mold body 1, and the groove 11 is in communication with the inner wall of the mold body 1 through eight inner nitrogen holes 12 with a diameter of 2 mm. The setting of the outer nitrogen hole 10 facilitates the connection of nitrogen, and the setting of the groove 11 and the eight inner nitrogen holes 12 can make the nitrogen connected by the outer nitrogen hole 10 flow from the annular periphery to the casting cavity 3, which is beneficial to improve the uniformity of nitrogen connection and ensure that nitrogen can fully play the role of anti-oxidation.

[0042] The other end of the mold core 2 is flush with the other end of the mold body 1, and the other end of the mold core 2 can also protrude or retract from the other end of the mold body 1. The other end of the mold core 2 is flush, protrudes or retracts from the other end of the mold body 1, that is, the length of the mold core 2 is different, which can be adjusted according to the drawing speed of the pipe blank, that is, the drawing speed of the pipe blank, which is also related to the cooling speed, to ensure that the pipe blank can be fully cooled before being separated from the mold core 2, to ensure the support and guidance of the pipe blank which is not fully cooled, to prevent the pipe blank from deforming due to incomplete cooling, affecting the quality of the pipe blank and production. In the embodiment of the application, the other end of the mold core 2 is flush with the other end of the mold body 1, as shown in the figure, the lengths of the mold body 1 and the mold core 2 are the same, and the two ends are flush.

[0043] The hollow mold body 1 and the mold core 2 form a casting cavity 3, the copper liquid enters from the four inclined liquid injection holes, forms a rotating trend after entering, can be fully mixed and uniform, with few bubbles, and the gas is discharged through the exhaust hole 9, and the pipe blank is formed after cooling. The cooling process of the pipe blank in the casting cavity 3 is smooth, the cooling quality is stable, and pores and cold separations will not be produced. The pipe blank can be fully mixed before cooling decay, the grain size is uniform, and nitrogen can be introduced into the casting cavity 3 through the nitrogen passage to prevent the pipe blank from being oxidized during casting.

[0044] In the description of the utility model, it is understood that the terms "one end", "the other end", "two ends", "inner" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified and limited, it is necessary to explain that the term "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, and can also be the communication between two elements, can be directly connected, or indirectly connected through an intermediate medium, and for ordinary skilled persons in the art, the specific meaning of the above-mentioned term can be understood according to the specific situation.

[0045] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A horizontal continuous casting graphite mold characterized by, The mold body is hollow and has a length of 480 mm, and the mold core is arranged in the mold body, and a casting cavity is formed between the hollow mold body and the mold core; a plurality of liquid injection holes with a diameter of 8 mm are arranged at equal angles in the same plane at a distance of 63 mm from one end of the mold body, and the axial directions of the plurality of liquid injection holes are arranged in the same circumferential direction; an exhaust hole is arranged on the mold body, the exhaust hole forms an angle of 45° with the mold body, and the outer end of the exhaust hole on the mold body is in the same plane as the plurality of liquid injection holes; a nitrogen channel is arranged at the other end of the mold body.

2. A horizontal continuous casting graphite mold according to claim 1, wherein One end of the mold core is provided with a connecting portion, the connecting portion is arranged in one end of the mold body, and the mold body and the connecting portion are connected by bolts.

3. A horizontal continuous casting graphite mold according to claim 2, wherein The hole in one end of the mold body is counterbored.

4. A horizontal continuous casting graphite mold according to claim 2, wherein The connecting portion and the mold core are arranged with a fillet.

5. A horizontal continuous casting graphite mold according to claim 1, wherein The liquid injection hole is arranged with four liquid injection holes, which include liquid injection hole A, liquid injection hole B, liquid injection hole C and liquid injection hole D in sequence in the clockwise direction, the angle between the axis of the liquid injection hole A and the exhaust hole is 10°, the axes of two adjacent liquid injection holes are arranged perpendicularly, and the axes of two opposite liquid injection holes are arranged in parallel.

6. A horizontal continuous casting graphite mold according to claim 1, wherein The nitrogen channel includes an outer nitrogen hole with a length of 80 mm extending to one end of the mold body, and the outer nitrogen hole is in the same plane as the exhaust hole, one end of the outer nitrogen hole is arranged with a groove in the annular shape of the mold body, and the groove and the inner wall of the mold body are connected and arranged in communication through a plurality of inner nitrogen holes.

7. A horizontal continuous casting graphite mold according to claim 1, wherein The mold body is a cylindrical body with an inner hole diameter of 94 mm.

8. A horizontal continuous casting graphite mold according to claim 1, wherein The other end of the mold core is flush with, protrudes from or is recessed into the other end of the mold body.

9. A horizontal continuous casting graphite mold according to claim 1, wherein The diameter of one end of the mold core is greater than the diameter of the other end.

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