Solid-phase additive bar and solid-phase additive device

Abstract

The utility model provides a solid-phase additive bar and a solid-phase additive device, and relates to the field of solid-phase additive. The solid-phase additive bar material comprises a bar body base material and a spiral plug, the bar body base material is of a hollow structure and forms a filling cavity, the filling cavity is filled with a reinforcing layer formed by reinforcing powder different from the bar body base material, internal threads are arranged at the two ends of the bar body base material, and external threads matched with the internal threads are arranged on the spiral plug. The spiral plugs are in threaded connection with the two ends of the rod body base material. According to the solid-phase additive bar, the bar body base material is of the hollow structure, the filling cavity can be filled with other materials, fusion of various metal materials can be achieved in the additive manufacturing process, and the mechanical property and functionality of the materials are improved. And the end part is plugged by the spiral plug, so that the structural stability of the bar is enhanced, and the bar is convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the field of solid-phase additive materials, and in particular to a solid-phase additive material rod and a solid-phase additive material device. Background Art

[0002] Solid-phase additive manufacturing technology is an innovative metal additive manufacturing technology that uses the principles of layered accumulation and friction extrusion plastic deformation processing to achieve the metal deposition process. In this technology, the rod is used as a filling material, and the friction extrusion effect with the substrate realizes the softening, flow and deposition of the material to form an additive layer. In the additive manufacturing process, traditional aluminum-based composite materials are often limited by the performance of a single material, and it is difficult to simultaneously meet the requirements of high strength, high toughness, good thermal conductivity, etc. As an advanced material forming technology, solid-phase additive manufacturing realizes the construction of complex structures by stacking solid materials layer by layer, providing new possibilities for the design of composite materials. However, how to integrate metal materials with different melting points in the additive manufacturing process to combine their respective advantages is a challenge facing current technology.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The utility model aims to provide a solid phase additive material rod and a solid phase additive material device.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In the first aspect, the utility model provides a solid-phase additive rod, which includes a rod base material and a spiral plug, wherein the rod base material is a hollow structure forming a filling cavity, the filling cavity is filled with a reinforcement layer formed by a reinforcing powder different from the material of the rod base material, both ends of the rod base material are provided with internal threads, the spiral plug is provided with external threads matching the internal threads, and the spiral plug and the two ends of the rod base material are threadedly connected.

[0007] In an optional embodiment, the spiral plug includes a limiting section and a screwing section that are connected to each other, the external thread is arranged on the outer surface of the screwing section, and a hexagonal groove is also arranged in the screwing section.

[0008] In an optional embodiment, the diameter of the limiting section is smaller than the diameter of the screwing section, the limiting section and the screwing section are transitionally connected via a first outer inclined surface, one end of the limiting section away from the screwing section shrinks inward to form a second outer inclined surface, and the ends of the internal threads at both ends of the rod base material are also provided with inner inclined surfaces that cooperate with the second outer inclined surface, and the minimum diameter of the inner inclined surface is smaller than the minimum diameter of the second outer inclined surface.

[0009] In an optional embodiment, the rod substrate is in the shape of a hollow cylinder with a radius of 6-9 mm, and a length of 800-1200 mm.

[0010] In an optional embodiment, the radius of the filling cavity is 1 / 4-3 / 4 of the radius of the rod substrate.

[0011] In an optional embodiment, the reinforcement layer is arranged in the filling cavity, or a core body made of the same material as the rod substrate is also arranged in the filling cavity, a honeycomb groove is arranged on the surface of the core body, and the reinforcement layer is arranged in the honeycomb groove.

[0012] In an optional embodiment, the inner wall of the filling cavity is provided with a filling thread.

[0013] In an optional embodiment, an outer side of the rod base material is provided with an external hexagonal positioning block for fixing the rod base material when installing the screw plug, and the internal thread is provided in the external hexagonal positioning block.

[0014] In an optional embodiment, the rod substrate includes an aluminum alloy rod, a strontium rod, a lead rod or a zinc rod.

[0015] In an optional embodiment, the reinforcing powder includes metal powder, metal oxide powder or non-metallic fiber.

[0016] In a second aspect, the utility model provides a solid phase additive device, which includes a solid phase additive rod as described in any one of the aforementioned embodiments.

[0017] The beneficial effects of the embodiments of the utility model are:

[0018] The solid-phase additive rod provided by the utility model can be filled with other materials (such as metal powder, metal oxide powder or non-metallic fiber) in the filling cavity inside it by setting the rod body substrate as a hollow structure, and the end is sealed with a spiral plug, which enhances the structural stability of the rod and facilitates the installation and disassembly of the rod, so that the solid-phase additive rod in this embodiment forms a composite material, integrating the performance of multiple metal materials into one, and through the hollow design and filling of different metals, it can achieve the fusion of multiple metal materials in the additive manufacturing process, and improve the mechanical properties and functionality of the material. In addition, in the utility model, the metal filled in the filling cavity is variable, which makes the solid-phase additive rod more flexible. At the same time, the reasonable design of the wall thickness of the rod body substrate and the inner cavity diameter enables the rod body substrate to adapt to different additive manufacturing processes and requirements. The solid-phase additive rod provided by the utility model is suitable for high-end fields such as aerospace, automobile manufacturing, and precision machinery that have special requirements on material properties, and expands the application scope of additive manufacturing technology. 600MPa-grade high-strength and high-toughness large aluminum alloy components will provide a new manufacturing method, ultra-high performance and efficiency for the manufacture of aluminum alloy parts such as armored vehicle parts, battlefield tanks and vehicle rapid repair, and have broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a solid phase additive rod provided in the first embodiment of the utility model;

[0021] Figure 2 A cross-sectional view of a solid phase additive material rod provided in the first embodiment of the utility model when no reinforcement layer is provided;

[0022] Figure 3 A cross-sectional view of a solid phase additive material rod provided by the first embodiment of the utility model when a reinforcement layer is provided;

[0023] Figure 4 A schematic structural diagram of a spiral plug for a solid phase additive rod provided in the first embodiment of the utility model;

[0024] Figure 5 A cross-sectional view of a solid-phase additive material rod provided in the second embodiment of the utility model when a reinforcement layer is provided;

[0025] Figure 6This is a cross-sectional view of the solid phase additive material rod provided in the third embodiment of the present utility model when no reinforcement layer is provided.

[0026] Icons: 100-solid phase additive rod; 110-rod base material; 111-filling cavity; 112-internal thread; 113-external hexagonal positioning block; 114-internal inclined surface; 115-filling thread; 116-core; 120-screw plug; 121-limiting section; 122-screwing section; 123-external thread; 124-internal hexagonal groove; 125-first external inclined surface; 126-second external inclined surface; 130-reinforcement layer. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] First embodiment

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 This embodiment provides a solid phase additive rod 100 , which includes a rod base material 110 , a screw plug 120 and a reinforcement layer 130 .

[0035] The rod substrate 110 is a hollow structure forming a filling cavity 111, and the filling cavity 111 is filled with a reinforcement layer 130 formed by a reinforcing powder different from the material of the rod substrate 110. Both ends of the rod substrate 110 are provided with internal threads 112, and the screw plug 120 is provided with external threads 123 matching the internal threads 112. The screw plug 120 and the two ends of the rod substrate 110 are threadedly connected.

[0036] In this embodiment, by setting the rod body substrate 110 as a hollow structure, other materials (such as metal powder, metal oxide powder or non-metallic fiber) can be filled in the filling cavity 111 inside it, so that the solid phase additive rod 100 in this embodiment forms a composite material, integrating the performance of multiple metal materials into one, and through the hollow design and filling different metals in the filling cavity 111, it is possible to achieve the fusion of multiple metal materials in the additive manufacturing process, and improve the mechanical properties and functionality of the material. This is conducive to improving the defects of the existing limitation of a single material and being unable to meet the requirements of high strength, high toughness, good thermal conductivity and other aspects.

[0037] Specifically, in this embodiment, the exterior of the solid phase additive rod 100 is made of a high-strength and high-toughness aluminum matrix to form a rod substrate 110. The rod substrate 110 is a hollow cylinder with a reserved hollow channel inside. The diameter and length of the rod substrate 110 are calculated to ensure that the metal material required for filling can be smoothly introduced and fixed during additive manufacturing. Among them, the radius of the rod substrate 110 is 6-9mm, and the length of the rod substrate 110 is 800-1200mm. The wall thickness of the rod substrate 110 is uniform, and the radius of the filling cavity 111 formed by its inner cavity is 1 / 4-3 / 4 of the radius of the rod substrate 110. The wall thickness of the rod substrate 110 is the difference between the radius of the rod substrate 110 and the radius of the filling cavity 111. The hollow part in the filling cavity 111 is filled according to the required additive product, and the filling cavity 111 is filled with metal powder, metal oxide powder, non-metallic fiber, or a mixture of several.

[0038] The outer side of the rod substrate 110 is provided with an external hexagonal positioning block 113 for fixing the rod substrate 110 when installing the screw plug 120. The provision of the external hexagonal positioning block 113 can ensure that the rod substrate 110 is fixed when installing the screw plug 120, which is conducive to uniformly applying force to the rod substrate 110 and avoiding deformation of the rod substrate 110. Specifically, the external hexagonal positioning blocks 113 are provided at both ends of the rod substrate 110, which is convenient for fixing the screw plug 120 when installing it.

[0039] See also Figure 4 The screw plug 120 includes a limiting section 121 and a screwing section 122 which are connected to each other.

[0040] The outer surface of the screwing section 122 is provided with an external thread 123, which is used to cooperate with the internal thread 112 on the rod substrate 110 to achieve a spiral connection between the screw plug 120 and the rod substrate 110. The spiral connection is convenient for installation and disassembly, and can achieve good axial restriction to ensure that the rod substrate 110 and the reinforcing layer 130 inside it are tightly combined. The screwing section 122 is also provided with an internal hexagonal groove 124. The internal hexagonal groove 124 is convenient for tightening the screw plug 120 with the help of an external driving member (such as an internal hexagonal wrench) when screwing the screw plug 120, so as to ensure a tight connection between the rod substrate 110 and the screw plug 120.

[0041] The diameter of the limiting section 121 is smaller than the diameter of the screwing section 122. The limiting section 121 and the screwing section 122 are transitionally connected by a first outer inclined surface 125. The end of the limiting section 121 away from the screwing section 122 shrinks inward to form a second outer inclined surface 126. The ends of the internal threads 112 at both ends of the rod substrate 110 are also provided with inner inclined surfaces 114 that cooperate with the second outer inclined surface 126. The minimum diameter of the inner inclined surface 114 is smaller than the minimum diameter of the second outer inclined surface 126. In this embodiment, the insertion depth of the spiral plug 120 can be limited by the cooperation of the inner inclined surface 114 and the second outer inclined surface 126, so that the spiral plug 120 is connected to the rod substrate 110 at a specific position, so that the installation position of the spiral plug 120 in this embodiment is limited, and the uniformity of each installation is ensured. At the same time, the preset volume of the filling cavity 111 is also ensured, so that when the reinforcing powder is filled into the filling cavity 111, the filling accuracy is better.

[0042] In this embodiment, metal powder, metal oxide powder or non-metallic fiber are all conventional raw materials purchased from the market, wherein metal powder includes but is not limited to iron powder, strontium powder, lead powder or zinc powder, metal oxide powder includes but is not limited to zirconium oxide powder, and non-metallic fiber includes but is not limited to graphene powder or carbon nanotube powder. It is convenient to be integrated as an auxiliary phase in the additive process, increase the plasticity of the material and reduce the processing temperature, so as to enhance the hardness, wear resistance and high temperature stability of the final product. In addition, according to specific application requirements, metal powder, metal oxide powder or non-metallic fiber can be used alternately or mixed in different areas or layers of the same bar material to achieve customized performance design. The working principle of the solid phase additive bar 100 is: in this embodiment, by setting the rod body substrate 110 as a hollow structure, other materials (such as metal powder, metal oxide powder or non-metallic fiber) can be filled in the filling cavity 111 inside it, so that the solid phase additive bar 100 in this embodiment forms a composite material, integrating the performance of multiple metal materials into one, and through the hollow design and filling of different metals, it can achieve the fusion of multiple metal materials in the additive manufacturing process, and improve the mechanical properties and functionality of the material. It is helpful to improve the existing defects of being limited to a single material and unable to meet multiple requirements such as high strength, high toughness, and good thermal conductivity.

[0043] Second embodiment

[0044] Please refer to Figure 5 This embodiment provides a solid phase additive rod 100, which is basically the same as the first embodiment, and the only difference is that this embodiment adds a core 116 on the basis of the first embodiment.

[0045] In this embodiment, the radius of the filling cavity 111 can be determined according to the amount of reinforcing powder to be filled. When the amount of reinforcing powder filled is large, the filling cavity 111 can be completely filled with reinforcing powder. When the amount of reinforcing powder filled is small or trace, and the radius of the filling cavity 111 cannot be further reduced, a core 116 can also be set in the filling cavity 111 in this embodiment. The material of the core 116 is consistent with the material of the rod substrate 110, and a honeycomb groove is set on the core 116. The reinforcing layer 130 is set in the honeycomb groove. By setting the core 116, a trace amount of reinforcing powder can be filled, so that the filling amount of reinforcing powder in the solid-phase additive rod 100 has a wider range, which is conducive to meeting different practical needs.

[0046] Third embodiment

[0047] Please refer to Figure 6 The present embodiment provides a solid phase additive rod 100, which is basically the same as the first embodiment, except that, based on the first embodiment, a filling thread 115 is added to the inner wall of the filling cavity 111. The setting of the filling thread 115 is particularly suitable for filling reinforcing powder. At this time, the reinforcing powder will be filled into the filling thread 115, which is beneficial to improve the connection effect between the rod substrate 110 and the reinforcing powder.

[0048] In addition, the utility model also provides a solid phase additive device, which includes the above-mentioned solid phase additive rod 100.

[0049] In summary, the solid-phase additive rod 100 provided by the utility model can be filled with other reinforcing powders in the filling cavity 111 inside it by setting the rod body substrate 110 as a hollow structure, and the end is sealed with a spiral plug 120, which enhances the structural stability of the rod and facilitates the installation and disassembly of the rod, so that the solid-phase additive rod 100 in this embodiment forms a composite material, integrates the performance of multiple metal materials into one, and can achieve the fusion of multiple metal materials in the additive manufacturing process through hollow design and filling of different metals, thereby improving the mechanical properties and functionality of the material. In addition, in the utility model, the metal filled in the filling cavity 111 is variable, so that the flexibility of the solid-phase additive rod 100 is better, and at the same time, the reasonable design of the wall thickness and inner cavity diameter of the rod body substrate 110 enables the rod body substrate 110 to adapt to different additive manufacturing processes and requirements. The solid-phase additive rod 100 provided by the utility model is suitable for high-end fields such as aerospace, automobile manufacturing, and precision machinery that have special requirements for material properties, and expands the application scope of additive manufacturing technology. 600MPa-grade high-strength and high-toughness large aluminum alloy components will provide a new manufacturing method, ultra-high performance and efficiency for the manufacture of aluminum alloy parts such as armored vehicle parts, battlefield tanks and vehicle rapid repair, and have broad application prospects.

[0050] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A solid phase additive rod, characterized in that: It includes a rod base material and a spiral plug. The rod base material is a hollow structure forming a filling cavity. The filling cavity is filled with a reinforcement layer formed by reinforcement powder different from the rod base material. Both ends of the rod base material are provided with internal threads. The spiral plug is provided with external threads matching the internal threads. The spiral plug and the two ends of the rod base material are threadedly connected.

2. The solid phase additive rod according to claim 1, characterized in that: The spiral plug comprises a limiting section and a screwing section which are connected to each other. The external thread is arranged on the outer surface of the screwing section, and a hexagonal groove is arranged in the screwing section.

3. The solid phase additive rod according to claim 2, characterized in that: The diameter of the limiting section is smaller than the diameter of the screwing section, and the limiting section and the screwing section are transitionally connected via a first outer inclined surface. One end of the limiting section away from the screwing section shrinks inward to form a second outer inclined surface, and the ends of the internal threads at both ends of the rod base material are also provided with inner inclined surfaces that cooperate with the second outer inclined surface, and the minimum diameter of the inner inclined surface is smaller than the minimum diameter of the second outer inclined surface.

4. The solid phase additive rod according to claim 1, characterized in that: The rod substrate is in the shape of a hollow cylinder with a radius of 6-9 mm. The length of the rod substrate is 800-1200 mm. The radius of the filling cavity is 1 / 4-3 / 4 of the radius of the rod substrate.

5. The solid phase additive rod according to claim 1, characterized in that: The reinforcing layer is arranged in the filling cavity, or a core body made of the same material as the rod body substrate is also arranged in the filling cavity, a honeycomb groove is arranged on the surface of the core body, and the reinforcing layer is arranged in the honeycomb groove.

6. The solid phase additive rod according to claim 1, characterized in that: The inner wall of the filling cavity is provided with a filling thread.

7. The solid phase additive rod according to claim 1, characterized in that: An external hexagonal positioning block for fixing the rod base material when installing the screw plug is arranged on the outer side of the rod base material, and the internal thread is arranged in the external hexagonal positioning block.

8. The solid phase additive rod according to claim 1, characterized in that: The rod substrate includes an aluminum alloy rod, a strontium rod, a lead rod or a zinc rod.

9. The solid phase additive rod according to claim 1, characterized in that: The reinforcing powder includes metal powder, metal oxide powder or non-metallic fiber.

10. A solid phase additive device, characterized in that: It comprises the solid phase additive rod as described in any one of claims 1 to 9.

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