Alloy die for super-hard aluminum alloy bar reverse extruder

Abstract

The utility model discloses an alloy die for a superhard aluminum alloy bar reverse extruder, which comprises a die body, the die body consists of an upper die, a T-shaped annular alloy and a lower die, a die hole is arranged at the circle center of the upper die, and the T-shaped annular alloy is positioned on the inner wall of the die hole. According to the alloy die for the super-hard aluminum alloy bar reverse extruder, the problems that the super-hard aluminum alloy bar is difficult to separate from the die body when extrusion is finished, and T-shaped annular alloy is easy to fall off from the die body in the extrusion process are solved, the extrusion speed is increased, the extrusion efficiency is improved, and the production cost is reduced. The surface of the extruded aluminum alloy bar is smooth, and the quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy processing, in particular to an alloy die for a reverse extruder of a superhard aluminum alloy bar. Background Art

[0002] Super-hard aluminum alloy, also known as ultra-high-strength aluminum alloy, is a type of aluminum-zinc-magnesium-copper alloy with ultra-high strength. Super-hard aluminum alloy is difficult to extrude. When extruded with ordinary H13 steel molds, the extrusion speed is slow, the efficiency is low, and the material surface is rough.

[0003] However, when using the alloy mold of the traditional super-hard aluminum alloy rod reverse extrusion machine, a mold inlaid with annular hard alloy is adopted. There are problems that the aluminum material and the mold are difficult to separate at the end of extrusion of each cast rod, and the annular hard alloy is easy to fall off from the mold during the extrusion process. Utility Model Content

[0004] The utility model discloses an alloy die for a reverse extruder of super-hard aluminum alloy bars, aiming to solve the technical problems that when a conventional alloy die of a reverse extruder of super-hard aluminum alloy bars is used, a die inlaid with annular hard alloy is used, the aluminum material and the die are difficult to separate at the end of extrusion of each cast bar, and the annular hard alloy is easy to fall off the die during the extrusion process.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An alloy die for a reverse extruder of a super-hard aluminum alloy bar comprises a die body, wherein the die body is composed of an upper die, a "T"-shaped circular ring-shaped alloy and a lower die. A die hole with a "T"-shaped cross-section is opened at the center of the upper die. The "T"-shaped circular ring-shaped alloy is located on the inner wall of the die hole and is compatible with the "T"-shaped die hole.

[0007] In this scheme, the traditional straight-through "O"-shaped circular carbide is changed into a "T"-shaped circular carbide, which is installed in the die hole with the upper die. The upper die and the lower die are fixed by interference fit with the lower die, and the super-hard aluminum alloy plate is then reversely extruded. This solves the problem that the aluminum material and the die body are difficult to separate at the end of extrusion of each bar, and the problem that the cemented carbide easily falls off the die body during the extrusion process. The extrusion speed of the super-hard aluminum alloy bars is increased, and the extrusion efficiency is improved. At the same time, the extrusion speed is increased by more than %, and the surface of the extruded aluminum alloy bars is smooth, thereby improving the surface quality of the aluminum material.

[0008] Optionally, the end face of the “T”-shaped circular ring-shaped alloy is lower than the end face of the upper die, and the distance between the end face of the “T”-shaped circular ring-shaped alloy and the end face of the upper die is in the range of 0.5-1 mm.

[0009] By adopting the above technical scheme, the end face of the "T"-shaped circular ring alloy is 0.5-1mm lower than the end face of the upper die. Compared with the old alloy die with a height difference of more than 3mm, the height difference is reduced. If the old alloy die is lower than 3mm, the cemented carbide is easy to fall off. As a result, during the extrusion process of the new alloy die body, there is very little aluminum remaining on the end face of the die hole of the die body, and the extruded super-hard aluminum alloy rod is easy to separate from the die body.

[0010] Optionally, the “T”-shaped annular alloy and the lower die are interference fit and used, and the interference amount between the “T”-shaped annular alloy and the lower die ranges from 0.01 to 0.02 mm.

[0011] By adopting the above technical solution, a "T"-shaped circular ring alloy is used to achieve an interference fit with the lower die, and at the same time the interference amount of hot fitting is reduced from the original interference amount of 0.02-0.03mm to 0.01-0.02mm, thereby reducing the difficulty of cemented carbide inlaying. At the same time, the problem of "T"-shaped circular ring alloy falling off during the extrusion process no longer occurs.

[0012] From the above, it can be seen that an alloy mold for a reverse extrusion machine for super-hard aluminum alloy bars includes a mold body, which is composed of an upper mold, a "T"-shaped circular ring alloy and a lower mold. A mold hole with a "T"-shaped cross-sectional shape is opened at the center of the upper mold, and the "T"-shaped circular ring alloy is located on the inner wall of the mold hole and is compatible with the "T"-shaped mold hole.

[0013] The alloy die for the reverse extruder of super-hard aluminum alloy bars provided by the utility model solves the problem that the super-hard aluminum alloy bars are difficult to separate from the die body at the end of extrusion, and the "T"-shaped annular alloy is easy to fall off from the die body during the extrusion process, thereby improving the extrusion speed and extrusion efficiency, making the surface of the extruded aluminum alloy bars smooth and improving the quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of an alloy die for a reverse extruder of super-hard aluminum alloy bars.

[0015] Figure 2 The utility model discloses an overall structural development diagram of an alloy die for a reverse extrusion machine for super-hard aluminum alloy bars.

[0016] Figure 3 The utility model discloses an overall structural sectional view of an alloy die for a reverse extruder of a super-hard aluminum alloy bar.

[0017] In the attached figure: 1. upper die; 2. lower die; 3. "T"-shaped annular alloy; 4. die hole; 5. screw hole; 6. screw groove. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0019] The utility model discloses an alloy mold for a reverse extruder of super-hard aluminum alloy bars. It is mainly used in the use of a conventional alloy mold for a reverse extruder of super-hard aluminum alloy bars. When a mold inlaid with an annular hard alloy is used, there is a problem that the aluminum material and the mold are difficult to separate at the end of extrusion of each cast bar, and the annular hard alloy is easy to fall off the mold during the extrusion process.

[0020] Reference Figure 1 , Figure 2 and Figure 3 An alloy die for a reverse extruder of a super-hard aluminum alloy bar comprises a die body, the die body being composed of an upper die 1, a "T"-shaped circular ring-shaped alloy 3 and a lower die 2. A die hole 4 with a "T"-shaped cross-section is opened at the center of the upper die 1, the "T"-shaped circular ring-shaped alloy 3 is located on the inner wall of the die hole 4 and is adapted to the "T"-shaped die hole 4.

[0021] In the specific working process, the traditional straight-through "O"-shaped circular carbide is changed into a "T"-shaped circular carbide 3, which is installed with the upper die 1 in the die hole 4, and the upper die 1 and the lower die 2 are fixed by interference fit, and then the super-hard aluminum alloy sheet is reversely extruded. At the same time, the extrusion speed can be increased by more than 50%, and the surface of the extruded aluminum alloy rod is smooth.

[0022] Further, see Figure 3 In some embodiments, the end face of the "T"-shaped circular ring-shaped alloy 3 is lower than the end face of the upper mold 1, and the spacing range between the end face of the "T"-shaped circular ring-shaped alloy 3 and the end face of the upper mold 1 is 0.5-1mm. In this way, the end face of the "T"-shaped circular ring-shaped alloy 3 is 0.5-1mm lower than the end face of the upper mold 1. Compared with the height difference of the old alloy mold being more than 3mm, the height difference is reduced. If the old alloy mold is lower than 3mm, the cemented carbide is easy to fall off, so that during the extrusion process of the new alloy mold body, there is very little aluminum remaining on the end face of the mold hole 4 of the mold body, and the extruded super-hard aluminum alloy rod is easy to separate from the mold body.

[0023] Further, see Figure 1 and Figure 3 In some embodiments, the "T"-shaped annular alloy 3 and the lower die 2 are interference fit and used, and the interference range between the "T"-shaped annular alloy 3 and the lower die 2 is 0.01-0.02mm. In this way, the "T"-shaped annular alloy 3 and the lower die 2 are used to achieve interference fit, and at the same time, the interference amount of hot fitting is reduced from the original interference amount of 0.02-0.03mm to 0.01-0.02mm, thereby reducing the difficulty of cemented carbide inlaying, and at the same time, the problem of "T"-shaped annular alloy 3 falling off during the extrusion process no longer occurs.

[0024] Among them, the upper mold 1 and the lower mold 2 have the same size, and the upper mold 1 is located directly above the lower mold 2. In this way, this scheme divides the flat mold into two, and changes it into a combined mold of upper and lower membranes. The upper mold 1 and the lower mold 2 have the same size. The upper mold 1 is placed on the lower mold 2, and the super-hard aluminum alloy rod is reversely extruded through the "T"-shaped circular ring alloy 3, and the matching effect is good.

[0025] Among them, the lower mold 2 expands when heated and is used in conjunction with the "T"-shaped annular alloy 3. In this way, the "T"-shaped annular alloy 3 is not heated, and the lower mold 2 is heated. The "T"-shaped annular alloy 3 is clamped through the thermal expansion of the lower mold 2, and the upper mold 1 and the lower mold 2 are tightly combined to prevent the "T"-shaped annular alloy 3 from falling off.

[0026] Reference Figure 1 and Figure 3 In a preferred embodiment, screw holes 5 are provided on both sides of the bottom outer wall of the lower mold 2, and screw grooves 6 are provided on both sides of the bottom outer wall of the upper mold 1. The two screw holes 5 and the two screw grooves 6 are symmetrically distributed, and the positions of the screw holes 5 and the screw grooves 6 correspond.

[0027] Specifically, the upper mold 1 and the lower mold 2 are connected by tightening the symmetrical screw holes 5 and screw grooves 6 with bolts, and the upper mold 1 and the lower mold 2 can be fixed and separated by tightening and loosening the bolts, which is simple and convenient to operate.

[0028] Working principle: When in use, the mold body consists of an upper mold 1, a "T"-shaped annular alloy 3, and a lower mold 2. The "T"-shaped annular alloy 3 is located in the mold hole 4 of the upper mold 1. The "T"-shaped annular alloy 3 and the lower mold 2 are interference fit, that is, the "T"-shaped annular alloy 3 is not heated, and the lower mold 2 is heated, with an interference fit of 0.01-0.02mm. The lower mold 2 expands due to heat and is fixed and clamped with the "T"-shaped annular alloy 3. At the same time, at the end of the mold hole 4, the distance between the end face of the "T"-shaped annular alloy 3 and the end face of the upper mold 1 is 0.5-1mm, and the end face of the "T"-shaped annular alloy 3 cannot be higher than the end face of the upper mold 1. The upper mold 1 and the lower mold 2 are screwed and fixed to the left-right symmetrical screw holes 5 and screw grooves 6 by bolts, and then the super-hard aluminum alloy plate is reversely extruded through the mold body.

[0029] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims

1. An alloy die for a reverse extruder of a superhard aluminum alloy bar, comprising a die body, characterized in that: The mold body is composed of an upper mold (1), a "T"-shaped annular alloy (3) and a lower mold (2); a mold hole (4) with a "T"-shaped cross-section is opened at the center of the upper mold (1); the "T"-shaped annular alloy (3) is located on the inner wall of the mold hole (4) and is compatible with the "T"-shaped mold hole (4).

2. The alloy die for the reverse extruder of superhard aluminum alloy bars according to claim 1, characterized in that: The end face of the "T"-shaped annular alloy (3) is lower than the end face of the upper die (1), and the distance between the end face of the "T"-shaped annular alloy (3) and the end face of the upper die (1) is in the range of 0.5-1 mm.

3. The alloy die for the reverse extruder of superhard aluminum alloy bars according to claim 2, characterized in that: The "T"-shaped annular alloy (3) and the lower die (2) are interference-fitted and used, and the interference amount between the "T"-shaped annular alloy (3) and the lower die (2) is in the range of 0.01-0.02 mm.

4. The alloy die for the reverse extruder of superhard aluminum alloy bars according to claim 3, characterized in that: The upper mold (1) and the lower mold (2) have the same size, and the upper mold (1) is located directly above the lower mold (2).

5. The alloy die for the reverse extruder of superhard aluminum alloy bars according to claim 4, characterized in that: The lower mold (2) expands when heated and is used in conjunction with the "T"-shaped annular alloy (3).

6. The alloy die for a reverse extruder of a superhard aluminum alloy bar according to claim 1, characterized in that: Screw holes (5) are provided on both sides of the bottom outer wall of the lower mold (2), and screw grooves (6) are provided on both sides of the bottom outer wall of the upper mold (1).

7. The alloy die for the reverse extruder of superhard aluminum alloy bars according to claim 6, characterized in that: The two screw holes (5) and the two screw grooves (6) are symmetrically distributed, and the positions of the screw holes (5) and the screw grooves (6) correspond to each other.

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