3D material additive manufacturing process

An additive manufacturing and process technology, applied in the field of 3D additive manufacturing process, can solve the problems of small adaptability, low production efficiency and high production cost, and achieve the effect of wide adaptability, high processing efficiency and low processing cost

Inactive Publication Date: 2017-05-31
肖仁旺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The mechanical properties are poor. Since the essence of 3D printing is micro-casting by region-selective melting, the overall part can basically be regarded as a casting shape, with complex internal stress and coarse and uneven structure crystals. Except for very few material grades in high-temperature alloys, they are suitable for 3D printing. , the mechanical properties of the as-cast state reach those of the rolled and forged state, and the mechanical properties of 3D printed workpieces made of aluminum alloy, titanium alloy, copper alloy, carbon steel, alloy steel, etc. are much different from those of rolled and forged materials of the same material;
[0005] The

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Since the inherent mechanical properties of aluminum alloy remain unchanged, composite materials are added to the aluminum substrate to prepare aluminum matrix composites to obtain higher mechanical properties. Solid particles or fibers or semi-solid aluminum alloys are evenly compounded, and then high-pressure continuous extrusion produces profiles with the required cross-sectional shape, or the molten material can be extruded and then formed by upsetting with a mold.

[0045] This embodiment 1 discloses a preparation method of an aluminum-based composite material workpiece:

[0046] Prefabricate the mold, and simulate the extrusion processing path of the extrusion head through the computer;

[0047] Step 1: Heat the aluminum substrate and the mixed material to a semi-molten state and stir them evenly by means of mechanical stirring;

[0048] Step 2: The extrusion head fits the mold surface to extrude the aluminum substrate into a strip-shaped billet, and the extrusion ...

Embodiment 2

[0055] This embodiment 2 discloses a preparation method of an aluminum-based composite material workpiece:

[0056] Prefabricate the mold, and simulate the extrusion processing path of the extrusion head through the computer;

[0057] Step 1: heating the aluminum substrate to a semi-molten state;

[0058] Step 2: The extrusion head fits the mold surface to extrude the aluminum substrate into a strip-shaped billet. The extrusion head extrudes prestressed steel wire or carbon fiber while extruding the aluminum substrate. While extruding, apply pressure to the strip-shaped stock material along the normal direction of the mold surface so that it fits on the mold surface;

[0059] Step 3: Repeat step 2 to splice or stack adjacent strip-shaped blanks, and weld the joints between adjacent strip-shaped blanks by friction stir welding to obtain prefabricated parts;

[0060] Step 4: rolling or forging the welded surface of the preform.

[0061] in:

[0062] Since the carbon fiber ca...

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PUM

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Abstract

The invention discloses a 3D material additive manufacturing process. The 3D material additive manufacturing process is characterized by comprising the following steps: step 1, heating materials to a semi-molten state; step 2, extruding the materials into strip-shaped blank in a mode of enabling an extruding head to fit with a mould surface of a mould; and step 3, repeating the step 2, enabling adjacent strip-shaped blank to splice or stack with each other, performing a molten-state or semi-molten-state jointing on a joint of adjacent strip-shaped blank to obtain a prefabricated part or welding through friction stir welding to obtain the prefabricated part. The 3D material additive manufacturing process is suitable for thermoplastic nonmetal materials and metal materials, and has the advantages of a wide range of application, low cost and good mechanical performances of workpieces obtained by manufacturing.

Description

technical field [0001] The invention relates to an additive manufacturing process, in particular to a 3D additive manufacturing process. Background technique [0002] Additive Manufacturing (AM) technology is a general term for a technology that is directly driven by a CAD model and accumulates materials layer by layer or point by point into solid parts. It is an emerging technology that is rapidly developing in the manufacturing field. It is called It is an emerging advanced manufacturing technology that has received widespread attention in recent years and is considered to be another major breakthrough in the field of manufacturing technology. Additive manufacturing technology can manufacture functional parts of almost any complex structure that cannot be processed or is difficult to process by traditional techniques, which can effectively save materials, reduce processing procedures and manufacturing time. It has great practical value and broad application prospects in t...

Claims

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Application Information

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IPC IPC(8): B29C64/118B29C64/255B29C64/295B22F3/115B33Y10/00
CPCB22F3/115B33Y10/00
Inventor 肖仁旺杨建国文成永吴家建
Owner 肖仁旺
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