High-strength and high-conductivity magnesium-aluminum alloy steady-state extrusion die

Abstract

The invention discloses a high-strength and high-conductivity magnesium-aluminum alloy steady-state extrusion die which comprises a first die body, a second die body and a third die body, a flow dividing bridge is arranged on the inner side of the first die body, and a second flow dividing bridge is arranged on the lower surface of the second die body; the mold core is fixed at one end of the shunting bridge, and a mold cavity matched with the mold core is formed in the inner side of the second mold body; the divergent mold body is arranged between the first mold body and the second mold body, and an overflowing hole is formed in the inner side of the divergent mold body in a penetrating mode; the shunting block is fixed at one end of the inner wall of the overflowing hole and is used for shunting the feed liquid; according to the extrusion die, the flow dividing die body, the flow passing holes, the flow dividing blocks and the expansion grooves are arranged, extrusion force can be well distributed to the first die body and the flow dividing die body through two times of flow dividing, the extrusion force is equally divided, the overall strength of the die is improved, meanwhile, friction heat in the extrusion process can be dispersed, and the extrusion efficiency is improved. And after extrusion, a plurality of strands of material flows can be formed through guiding, so that the material flows are distributed more uniformly.

Description

TECHNICAL FIELD

[0001] The application relates to a high-strength high-conductivity magnesium-aluminum alloy steady-state extrusion die. BACKGROUND

[0002] The magnesium-aluminum alloy extrusion die is a key tool for a hot extrusion forming process, and the core function is to force an aluminum alloy ingot in a plastic state at a high temperature to pass through a specific-shaped orifice on the die under the action of a great pressure, so that a profile with a required cross-sectional shape is obtained.

[0003] The existing extrusion die only performs one-time flow distribution through a flow distribution bridge during extrusion, so that the extrusion force is completely applied to the flow distribution bridge, and long-time large extrusion force can cause the flow distribution bridge to be distorted, the flow of the material liquid is affected, and the shaping effect in the later period is affected, one-time flow distribution cannot uniformly distribute the material liquid in the die, and the effect of the profile surface after forming is affected by material shortage. SUMMARY

[0004] The application aims to provide a high-strength high-conductivity magnesium-aluminum alloy steady-state extrusion die to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a high-strength high-conductivity magnesium-aluminum alloy steady-state extrusion die, comprising:

[0006] A first die body is provided with a flow distribution bridge on the inner side, and a second die body is arranged on the lower surface of the first die body;

[0007] A die core is fixed to one end of the flow distribution bridge, and a die cavity matched with the die core is arranged on the inner side of the second die body;

[0008] A flow distribution die body is arranged between the first die body and the second die body, and a flow hole is arranged on the inner side of the flow distribution die body;

[0009] A flow distribution block is fixed to one end of the inner wall of the flow hole to distribute the material liquid;

[0010] An expansion groove is arranged on the other end of the inner wall of the flow hole to converge and store the material liquid.

[0011] Preferably, a welding chamber is arranged on the second die body, and a transition groove is arranged between one end of the welding chamber and the die cavity to transition.

[0012] Preferably, the inner diameter of the welding chamber is reduced along the direction of the die cavity.

[0013] Preferably, the flow distribution block comprises a first flow distribution part and a second flow distribution part, the first flow distribution part is fixed to one end of the inner wall of the flow hole, and the first flow distribution part is integrally formed with the second flow distribution part at one end, and the outer diameter of the first flow distribution part increases along the direction of the second flow distribution part.

[0014] Preferably, the flow distribution block is uniformly distributed along the circumference of the flow hole, and the flow distribution block is staggered with the flow distribution bridge.

[0015] Preferably, the two side walls of the flow distribution die are provided with sealing grooves, and the first die is provided with a sealing protrusion corresponding to the sealing groove on one side.

[0016] Preferably, the first die is fixed with a guide column on one side, and the second die is provided with a positioning groove matched with the guide column, and the inner side of the flow distribution die is provided with a guide hole corresponding to the guide column.

[0017] Preferably, the flow distribution bridge is provided with a plurality of flow distribution holes formed between every two flow distribution bridges.

[0018] Preferably, the inner side of the first die is provided with a heat conduction cavity, and the heat conduction cavity penetrates through the two side walls of the first die to form a connecting port.

[0019] Preferably, the heat conduction cavity is in the shape of "Ji".

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] The present application is provided with a flow distribution die, a flow hole, a flow distribution block and an expansion groove, which can avoid the complete action of extrusion force on the first die when the material is distributed, and the large concentrated extrusion force can cause the flow distribution bridge to be distorted, affecting the distribution effect. The device can well distribute the extrusion force to the first die and the flow distribution die through twice distribution, so as to evenly divide the extrusion force, improve the overall strength of the die, and at the same time, disperse the friction heat in the extrusion process, so as to guide the formation of multiple streams after extrusion, make the material flow more uniform, reduce the gap formed by air, protect the surface quality of aluminum alloy, and through the expansion groove, the material flow after distribution is temporarily stored, so that the material flow speed is more uniform when flowing into the welding chamber, the aluminum alloy product quality is stable, the material defects are reduced, and the heat dissipation is stable during long-time extrusion work. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure of the present application is shown in the figure;

[0023] Figure 2 The structure of the flow distribution die of the present application is shown in the figure;

[0024] Figure 3The expansion groove structure of the present application is shown in the figure;

[0025] Figure 4 The expansion groove structure of the present application is shown in the figure; Figure 2 The expansion groove structure of the present application is shown in the figure;

[0026] Figure 5 The expansion groove structure of the present application is shown in the figure;

[0027] Figure 6 The expansion groove structure of the present application is shown in the figure;

[0028] Figure 7 The expansion groove structure of the present application is shown in the figure;

[0029] Figure 8 The expansion groove structure of the present application is shown in the figure.

[0030] The expansion groove structure of the present application is shown in the figure. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] The expansion groove structure of the present application is shown in the figure. Figures 1-8 The present application provides a technical solution: a high-strength and high-conductivity magnesium-aluminum alloy steady-state extrusion die, comprising:

[0033] The first die body 1 is provided with a flow distribution bridge 10 on the inner side, and the lower surface of the first die body 1 is provided with a second die body 3;

[0034] The die core 8 is fixed to one end of the flow distribution bridge 10, and the inner side of the second die body 3 is provided with a die cavity 7 matched with the die core 8;

[0035] The flow distribution die body 2 is arranged between the first die body 1 and the second die body 3, and the inner side of the flow distribution die body 2 is provided with a flow hole 4;

[0036] The flow distribution die body 2 can share the extrusion force when extruding, avoids that the extrusion force acts on the flow distribution bridge 10, prevents the flow distribution bridge 10 from being distorted by the large extrusion force, guarantees the strength of the die, and can be disassembled and maintained after the flow distribution block 5 is damaged, which is easy to use;

[0037] The flow distribution block 5 is fixed to one end of the inner wall of the flow passage 4 to distribute the material liquid.

[0038] The flow distribution block 5 is fixed to one end of the inner wall of the flow passage 4 to distribute the material liquid.

[0039] The expansion groove 6 is arranged at the other end of the inner wall of the flow passage 4 to converge and store the material liquid.

[0040] The expansion groove 6 is arranged at the other end of the inner wall of the flow passage 4 to converge and store the material liquid.

[0041] Preferably, the second die body 3 is provided with a welding chamber 31, and the welding chamber 31 has a transition groove 32 between one end and the die cavity 7 for transition, so that the material liquid can flow into the die cavity 7 better to shape the material liquid.

[0042] Preferably, the inner diameter of the welding chamber 31 decreases along the direction of the die cavity 7, so that the material liquid can be supplied through a large diameter to guarantee the stable flow of the material liquid in the die cavity 7.

[0043] Preferably, the flow distribution block 5 includes a first flow distribution part 51 and a second flow distribution part 52, the first flow distribution part 51 is fixed to one end of the inner wall of the flow passage 4, and the first flow distribution part 51 is integrally formed with the second flow distribution part 52 at one end, and the outer diameter of the first flow distribution part 51 increases along the direction of the second flow distribution part 52.

[0044] The first flow distribution part 51 can provide a large pressure when extruding through the small outer diameter at one end, so that the material liquid can flow, and the other end can transition to the second flow distribution part 52 through the large outer diameter.

[0045] Preferably, the flow distribution block 5 is distributed along the circumference of the flow passage 4, and the flow distribution block 5 is staggered with the flow distribution bridge 10, so that the material liquid can be better formed into multiple streams to improve the distribution uniformity of the material liquid in the first die body 1.

[0046] Preferably, the flow distribution die body 2 is provided with a sealing groove 21 at the edge of the two side walls, and the first die body 1 is provided with a sealing protrusion corresponding to the sealing groove 21 on one side, so as to improve the sealing effect after the first die body 1 is connected with the flow distribution die body 2.

[0047] Preferably, the first die body 1 is fixed with a guide column 9 on one side, and the second die body 3 is provided with a positioning groove matched with the guide column 9, and the inner side of the shunt die body 2 is provided with a guide hole 22 corresponding to the guide column 9, so as to facilitate positioning when accurately closing the die.

[0048] Preferably, a plurality of shunt bridges 10 are arranged, and a shunt hole is formed between every two shunt bridges 10, so as to facilitate first shunting.

[0049] Preferably, the inner side of the first die body 1 is provided with a heat conduction cavity 11, the heat conduction cavity 11 penetrates through the two side walls of the first die body 1 to form a connecting port 12, so as to facilitate heat dissipation during long-time processing, and the connecting port 12 can be connected with natural wind or cooling liquid.

[0050] Preferably, the heat conduction cavity 11 is in the shape of a Chinese character 'j', so as to form a better heat dissipation area.

[0051] Working principle and use process of the present application: in use, the first die body 1 and the second die body 3 are closed, the material is extruded from one end of the first die body 1 to the inner side, the material is shunted through the shunt bridge 10, and the material is shunted again after contacting the shunt block 5, a plurality of material flows are formed, the material flows converge in the expansion groove 6, the material continues to be extruded and pushed into the inner side of the first die body 1, the material flows out of the expansion groove 6 enter the welding chamber 31 and the transition groove 32 and are welded, the material is shaped during welding through cooperation of the die core 8 and the die cavity 7, and finally the material is discharged from the second die body 3 to form an aluminum alloy with a fixed shape.

[0052] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die, characterized in that, Comprising: A first die body (1), with a flow splitting bridge (10) arranged inside the first die body (1), and a second die body (3) arranged on the lower surface of the first die body (1); A die core (8), fixed to one end of the flow splitting bridge (10), and a die cavity (7) matching the die core (8) is formed inside the second die body (3); A flow splitting die body (2), arranged between the first die body (1) and the second die body (3), and a flow through hole (4) is formed through the inside of the flow splitting die body (2); A flow splitting block (5), fixed to one end of the inner wall of the flow through hole (4) to split the material liquid; An expansion groove (6), formed at the other end of the inner wall of the flow through hole (4) to converge the material liquid for storage.

2. The high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 1, characterized in that: A welding chamber (31) is formed on the second die body (3), and there is a transition groove (32) for transition between one end of the welding chamber (31) and the die cavity (7).

3. The high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 2, characterized in that: The inner diameter of the welding chamber (31) decreases along the direction of the die cavity (7).

4. The high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 1, characterized in that: The flow splitting block (5) includes a first flow splitting part (51) and a second flow splitting part (52), the first flow splitting part (51) is fixed to one end of the inner wall of the flow through hole (4), and a second flow splitting part (52) is integrally formed at one end of the first flow splitting part (51), and the outer diameter of the first flow splitting part (51) increases along the direction of the second flow splitting part (52).

5. The high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 1, characterized in that: The flow splitting blocks (5) are evenly distributed along the circumferential direction of the flow through hole (4), and the flow splitting blocks (5) are staggered with the flow splitting bridge (10).

6. The high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 1, characterized in that: Sealing grooves (21) are arranged at the edges of both side walls of the flow splitting die body (2), and sealing bumps are arranged on one side of the first die body (1) corresponding to the sealing grooves (21).

7. The high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 1, characterized in that: A guide post (9) is fixed to one side of the first die body (1), and a positioning groove matching the guide post (9) is formed on the second die body (3), and a guide hole (22) corresponding to the guide post (9) is formed inside the flow splitting die body (2).

8. The high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 1, characterized in that: There are multiple flow splitting bridges (10), and a flow splitting hole is formed between every two flow splitting bridges (10).

9. A high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 1, characterized in that: A heat conduction cavity (11) is arranged inside the first die body (1), and the heat conduction cavity (11) penetrates through both side walls of the first die body (1) to form a connection port (12).

10. A high-strength, high-conductivity magnesium-aluminum alloy steady-state extrusion die according to claim 9, characterized in that: The heat conduction cavity (11) is in a "C" shape.

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