Magnesium alloy capable of being extruded at high speed

Abstract

The invention discloses a magnesium alloy capable of being extruded at a high speed, which comprises a magnesium alloy raw material assembly, the magnesium alloy raw material assembly comprises a first magnesium alloy raw material, a connecting part fixed to one end of the first magnesium alloy raw material, a second magnesium alloy raw material fixed to the end, away from the first magnesium alloy raw material, of the connecting part and a first chamfer arranged on the outer side of the end, away from the connecting part, of the second magnesium alloy raw material. The connecting part is made of the same material as the first magnesium alloy raw material and the second magnesium alloy raw material and is cut, the diameter of the connecting part close to the first magnesium alloy raw material is larger than that of the connecting part far away from the first magnesium alloy raw material, and the second magnesium alloy raw material is firstly close to the die. According to the magnesium alloy capable of being extruded at the high speed, the magnesium alloy raw material (blank) is subjected to refining treatment, so that the magnesium alloy raw material (blank) subjected to refining treatment can quickly penetrate through a mold opening compared with the magnesium alloy raw material (blank) which is not subjected to refining treatment, and then the magnesium alloy raw material (blank) can be extruded at the high speed.

Description

Technical Field

[0001] The invention relates to the technical field of magnesium alloys, in particular to a magnesium alloy capable of being extruded at high speed. Background Art

[0002] Magnesium alloy is an alloy composed of magnesium and other elements. Its characteristics are: low density, high strength, large elastic modulus, good heat dissipation, good shock absorption, greater impact load bearing capacity than aluminum alloy, and good resistance to organic and alkali corrosion. The main alloying elements are aluminum, zinc, manganese, manganese, cerium, thorium, and a small amount of zirconium or cadmium. The most widely used is magnesium-aluminum alloy, followed by magnesium-manganese alloy and magnesium-zinc-zirconium alloy. It is mainly used in aviation, aerospace, transportation, chemical industry, rocket and other industrial sectors. Thanks to the transformation and upgrading of China's automobile industry and 3C industries and the significant improvement of China's economic status, the magnesium alloy industry is optimistic about the market. Among them, the lightweight and environmentally friendly needs of the automotive industry, especially the development of new energy vehicles, and the continuous progress of magnesium alloy research technology and recycling technology will be good news for promoting the widespread application of magnesium alloys.

[0003] Magnesium alloy profiles are difficult to plastically form, and are usually formed by extrusion methods with excellent deformation mechanical conditions. In this extrusion forming method, a magnesium alloy raw material (billet) placed in a container is forced through a die opening by a hammer to produce a section or profile with a constant cross section.

[0004] When the magnesium alloy raw material (billet) is extruded as described above, the magnesium alloy raw material (billet) is hit by a hammer so that the magnesium alloy raw material (billet) passes through the die opening, and then a specified magnesium alloy product is produced. Since the magnesium alloy raw material (billet) is first close to the die end without being refined, when the hammer hits the magnesium alloy raw material (billet), the magnesium alloy raw material (billet) first approaches the die end and the die opening and a relatively strong collision occurs. On the one hand, the efficiency of extrusion of the magnesium alloy raw material (billet) is reduced, and on the other hand, the die is easily damaged under long-term impact. Therefore, when this type of magnesium alloy raw material (billet) (first close to the die end without being refined) is extruded, the extrusion efficiency is relatively low, and it is also easy to cause greater damage to the die.

[0005] In view of the problem that in the above-mentioned prior art, when extruding magnesium alloy raw materials (billets), the extrusion efficiency is relatively low and it is also easy to cause great damage to the mold, inventing a low-cost high-speed extrusion deformable magnesium alloy is of great significance to promoting the development of magnesium alloys. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] The present invention is proposed in view of the above-mentioned problems and / or problems existing in existing magnesium alloys.

[0008] Therefore, the purpose of the present invention is to provide a magnesium alloy that can be extruded at high speed, which can improve the extrusion efficiency of the magnesium alloy raw material (blank), so that the magnesium alloy raw material (blank) can be extruded at high speed, and at the same time can reduce the damage caused by the magnesium alloy raw material (blank) to the mold during high-speed extrusion.

[0009] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: A magnesium alloy capable of high-speed extrusion, comprising: A magnesium alloy raw material assembly, comprising a first magnesium alloy raw material, a connecting portion fixed at one end of the first magnesium alloy raw material, a second magnesium alloy raw material fixed at the connecting portion away from the end of the first magnesium alloy raw material, and a first chamfer arranged outside the end of the second magnesium alloy raw material away from the connecting portion, wherein the connecting portion is made of the same material as the first magnesium alloy raw material and the second magnesium alloy raw material, the connecting portion is made by cutting, the diameter of the connecting portion close to the first magnesium alloy raw material end is larger than the diameter of the end away from the first magnesium alloy raw material, and the second magnesium alloy raw material is the first to approach the die end; As a preferred solution of the high-speed extrudable magnesium alloy described in the present invention, a row of heat dissipation grooves are provided on the outer wall of the first magnesium alloy raw material, and the heat dissipation grooves are evenly distributed along the axial direction of the first magnesium alloy raw material.

[0010] As a preferred solution of the high-speed extrudable magnesium alloy described in the present invention, the outer wall of the first magnesium alloy raw material is provided with four rows of heat dissipation grooves, and the four rows of heat dissipation grooves are distributed in an annular manner along the outer wall of the first magnesium alloy raw material.

[0011] As a preferred solution of the high-speed extrudable magnesium alloy described in the present invention, the distance between the two heat dissipation grooves on opposite sides is greater than the diameter of the second magnesium alloy raw material.

[0012] As a preferred solution of the high-speed extrudable magnesium alloy described in the present invention, an impact part is fixed to the end of the first magnesium alloy raw material away from the second magnesium alloy raw material, the diameter of the impact part close to the first magnesium alloy raw material is larger than the diameter away from the first magnesium alloy raw material, and the impact part is made of the same material as the first magnesium alloy raw material.

[0013] As a preferred solution of the high-speed extrudable magnesium alloy described in the present invention, a thickened portion is fixed to the end of the impact portion away from the first magnesium alloy raw material, and the diameter of the thickened portion is the same as that of the impact portion.

[0014] As a preferred solution of the high-speed extrudable magnesium alloy described in the present invention, a second chamfer is provided on the outer side of the thickened portion away from the end of the impact portion.

[0015] Compared with the prior art, the present invention has the beneficial effects that: the magnesium alloy that can be extruded at high speed is refined by subjecting the magnesium alloy raw material (blank) to a refinement treatment so that the magnesium alloy raw material (blank) consists of a first magnesium alloy raw material, a connecting portion, a second magnesium alloy raw material and a first chamfer. When the magnesium alloy raw material (blank) is extruded, the second magnesium alloy raw material first passes through the die opening. Since the second magnesium alloy raw material is chamfered to form the first chamfer, the impact of the second magnesium alloy raw material on the die opening when passing through the die opening is much smaller than the impact on the die opening when the refinement treatment is not performed. Therefore, when the magnesium alloy raw material (blank) that has been refined is extruded, it can pass through the die opening faster than the magnesium alloy raw material (blank) that has not been refined, thereby improving the extrusion efficiency of the magnesium alloy raw material (blank), allowing the magnesium alloy raw material (blank) to be extruded at high speed, while also reducing the damage to the die opening, and effectively extending the service life of the die. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 This is a schematic diagram of a three-dimensional structure of a magnesium alloy that can be extruded at high speed according to the present invention; Figure 2 This is a schematic diagram of a three-dimensional structure of a magnesium alloy that can be extruded at high speed according to the present invention; Figure 3 This is a schematic diagram of a three-dimensional structure of a magnesium alloy that can be extruded at high speed according to the present invention; Figure 4 A magnesium alloy capable of high-speed extrusion according to the present invention Figure 3 Look at the structural diagram; In the figure: 100, magnesium alloy raw material assembly; 110, first magnesium alloy raw material; 111, heat dissipation groove; 112, impact portion; 113, thickened portion; 114, second chamfer; 120, connecting portion; 130, second magnesium alloy raw material; 140, first chamfer. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0018] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] The present invention provides a magnesium alloy that can be extruded at high speed, which can improve the extrusion efficiency of the magnesium alloy raw material (blank), so that the magnesium alloy raw material (blank) can be extruded at high speed, and can also reduce the damage caused by the magnesium alloy raw material (blank) to the mold during high-speed extrusion.

[0021] Figure 1-Figure 4 The structure diagram of an embodiment of a magnesium alloy capable of high-speed extrusion according to the present invention is shown in FIG. Figure 1-Figure 4 In this embodiment, a magnesium alloy that can be extruded at high speed has a main body including a magnesium alloy raw material component 100.

[0022] The magnesium alloy raw material assembly 100 includes a first magnesium alloy raw material 110, a connecting portion 120 fixed at one end of the first magnesium alloy raw material 110, a second magnesium alloy raw material 130 fixed at the end of the connecting portion 120 away from the first magnesium alloy raw material 110, and a first chamfer 140 arranged on the outer side of the end of the second magnesium alloy raw material 130 away from the connecting portion 120. The connecting portion 120 is made of the same material as the first magnesium alloy raw material 110 and the second magnesium alloy raw material 130. The connecting portion 120 is made by cutting. The diameter of the connecting portion 120 close to the first magnesium alloy raw material 110 is larger than the diameter of the end away from the first magnesium alloy raw material 110. The second magnesium alloy raw material 130 is the first to approach the mold end. Preferably, in the present embodiment, the outer wall of the first magnesium alloy raw material 110 is provided with a row of heat dissipation grooves 111, and the heat dissipation grooves 111 are evenly distributed along the axial direction of the first magnesium alloy raw material 110. The heat dissipation grooves 111 provided on the outer wall of the first magnesium alloy raw material 110 and evenly distributed along the axial direction of the first magnesium alloy raw material 110 reduce the contact area between the first magnesium alloy raw material 110 and the mold, reduce friction, and prevent excessive friction heat generated between the first magnesium alloy raw material 110 and the mold, resulting in deformation of the sizing belt of the mold. The outer wall of the first magnesium alloy raw material 110 is provided with four rows of heat dissipation grooves 111. The heat dissipation grooves 111 are arranged in a ring shape along the outer wall of the first magnesium alloy raw material 110. The four rows of heat dissipation grooves 111 arranged in a ring shape along the outer wall of the first magnesium alloy raw material 110 further reduce the contact area between the first magnesium alloy raw material 110 and the mold, reduce friction, and further prevent the friction heat generated between the first magnesium alloy raw material 110 and the mold from being too large, resulting in deformation of the sizing belt of the mold. The distance between the two heat dissipation grooves 111 on the opposite side is greater than the diameter of the second magnesium alloy raw material 130, so as to prevent the heat dissipation grooves 111 from affecting the mold during extrusion. In the magnesium alloy product formed by pressure forming, an impact part 112 is fixed at the end of the first magnesium alloy raw material 110 away from the second magnesium alloy raw material 130, and the diameter of the impact part 112 close to the first magnesium alloy raw material 110 is larger than the diameter of the end away from the first magnesium alloy raw material 110. The impact part 112 is made of the same material as the first magnesium alloy raw material 110. The impact part 112, which is made of the same material as the first magnesium alloy raw material 110, is used to bear the impact of the hammer to prevent the hammer from directly hitting the first magnesium alloy raw material 110 and causing damage to the first magnesium alloy raw material 110. The impact part 112 is fixed at the end away from the first magnesium alloy raw material 110. A thickened portion 113 is provided, and the diameter of the thickened portion 113 is the same as that of the impact portion 112. The thickened portion 113 having the same diameter as that of the impact portion 112 increases the thickness of the impact portion 112, thereby further enhancing the protection of the first magnesium alloy raw material 110. A second chamfer 114 is provided on the outer side of the end of the thickened portion 113 away from the impact portion 112. The second chamfer 114 provided on the outer side of the end of the thickened portion 113 away from the impact portion 112 improves the safety of the entire first magnesium alloy raw material 110, thereby preventing the thickened portion 113 which has not been chamfered from scratching the hands when picking up the first magnesium alloy raw material 110.

[0023] Combination Figure 1-Figure 4 In the present embodiment, a magnesium alloy capable of high-speed extrusion is provided, and the extrusion efficiency of the magnesium alloy raw material (billet) is improved as follows: before the magnesium alloy raw material (billet) is extruded, a first magnesium alloy raw material 110 is firstly subjected to a thinning treatment on the end close to the die, a connecting portion 120 is firstly cut out of the first magnesium alloy raw material 110 close to the die end, and then a second magnesium alloy raw material 130 is cut out according to the end of the connecting portion 120 away from the first magnesium alloy raw material 110, and finally a chamfering treatment is performed on the end of the second magnesium alloy raw material 130 away from the first magnesium alloy raw material 110 to form a first chamfer 140, thereby completing the thinning treatment on the end of the first magnesium alloy raw material 110 close to the die end, and when the first magnesium alloy raw material 110 after the thinning treatment is completed is extruded, the second magnesium alloy raw material 130 is firstly placed close to the die end, and then the end of the first magnesium alloy raw material 110 away from the second magnesium alloy raw material 130 is struck by a hammer, so that the second The magnesium alloy raw material 130 passes through the die opening, and finally, under the impact of the hammer, the second magnesium alloy raw material 130, the connecting portion 120 and the first magnesium alloy raw material 110 pass through the die opening in sequence, thereby producing a section or profile with a constant cross section. When the second magnesium alloy raw material 130 passes through the die opening, since the second magnesium alloy raw material 130 is chamfered, the first chamfer 140 formed by the chamfering, when passing through the die opening, the impact on the die opening is much smaller than the impact on the die opening without the refinement treatment, so that the magnesium alloy raw material (billet) with the refinement treatment can pass through the die opening faster than the magnesium alloy raw material (billet) without the refinement treatment during extrusion, thereby improving the extrusion efficiency of the magnesium alloy raw material (billet), allowing the magnesium alloy raw material (billet) to be extruded at high speed, while also reducing the damage to the die opening, and effectively extending the service life of the die.

[0024] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A magnesium alloy capable of high-speed extrusion, characterized in that: include: A magnesium alloy raw material assembly (100) comprises a first magnesium alloy raw material (110), a connecting portion (120) fixed at one end of the first magnesium alloy raw material (110), a second magnesium alloy raw material (130) fixed at an end of the connecting portion (120) away from the first magnesium alloy raw material (110), and a first chamfer (140) arranged outside the end of the second magnesium alloy raw material (130) away from the connecting portion (120), wherein the connecting portion (120) is made of the same material as the first magnesium alloy raw material (110) and the second magnesium alloy raw material (130), the connecting portion (120) is made by cutting, the diameter of the connecting portion (120) close to the first magnesium alloy raw material (110) is larger than the diameter of the end away from the first magnesium alloy raw material (110), and the second magnesium alloy raw material (130) is the first to approach the die end.

2. A high-speed extrudable magnesium alloy according to claim 1, characterized in that: The outer wall of the first magnesium alloy raw material (110) is provided with a row of heat dissipation grooves (111), and the heat dissipation grooves (111) are evenly distributed along the axial direction of the first magnesium alloy raw material (110).

3. A high-speed extrudable magnesium alloy according to claim 2, characterized in that: Four rows of heat dissipation grooves (111) are provided on the outer wall of the first magnesium alloy raw material (110), and the four rows of heat dissipation grooves (111) are distributed in an annular manner along the outer wall of the first magnesium alloy raw material (110).

4. A magnesium alloy capable of high-speed extrusion according to claim 3, characterized in that: The distance between the two heat dissipation grooves (111) on the opposite sides is greater than the diameter of the second magnesium alloy raw material (130).

5. A high-speed extrudable magnesium alloy according to claim 4, characterized in that: An impact portion (112) is fixed to the end of the first magnesium alloy raw material (110) away from the second magnesium alloy raw material (130); the diameter of the impact portion (112) close to the first magnesium alloy raw material (110) is larger than the diameter of the end away from the first magnesium alloy raw material (110); and the impact portion (112) and the first magnesium alloy raw material (110) are made of the same material.

6. A magnesium alloy capable of high-speed extrusion according to claim 5, characterized in that: A thickened portion (113) is fixed to the end of the impact portion (112) away from the first magnesium alloy raw material (110), and the thickened portion (113) and the impact portion (112) have the same diameter.

7. A high-speed extrudable magnesium alloy according to claim 6, characterized in that: A second chamfer (114) is provided on the outer side of the end of the thickened portion (113) away from the impact portion (112).

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