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Method for conducting copper infiltration on 3D printed tungsten blank through tungsten powder fuse jet

A 3D printing and tungsten powder technology, which is applied in the field of 3D printing tungsten billet copper infiltration by tungsten powder fuse jetting, can solve the problems of not being able to meet the production capacity of mass production of tungsten copper parts, and the low efficiency of 3D printing tungsten billets, and achieve industrialization. Increased stability, high printing efficiency, and uniform porosity

Active Publication Date: 2021-05-14
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the efficiency of conventional 3D printing tungsten blanks is very low, and the printing speed is 100g / hour, which cannot meet the production capacity of mass production of tungsten copper parts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method of 3D printing tungsten billet copper infiltration by tungsten powder fuse jetting, comprising the following steps:

[0041] S1: Raw material ratio

[0042] Put the plastic base material and tungsten powder into the mixing device according to the volume ratio of 3:5 and mix them. The purity of the tungsten powder is 99.2%, the stirring speed is 80r / min, and the stirring time is 0.5h; the mixed raw materials are obtained, and then the mixed raw materials are added to the mixing Further mixing is carried out in the mixer, the temperature of the mixer is kept at 300°C, and the vacuum degree in the mixer is 0.5Pa to form the raw material of tungsten-based plastic wire;

[0043] S2: Making tungsten-based plastic wire

[0044] The tungsten-based plastic wire raw material obtained in step S1 is extruded through an extruder, the extrusion temperature is 275 ° C, the extrusion pressure is maintained at 3.1 bar, and the diameter of the extruded tungsten-based plastic wi...

Embodiment 2

[0057] A method of 3D printing tungsten billet copper infiltration by tungsten powder fuse jetting, comprising the following steps:

[0058] S1: Raw material ratio

[0059] Put the plastic base material and tungsten powder into the mixing device according to the volume ratio of 3:5 and mix them. The purity of the tungsten powder is 99.2%, the stirring speed is 80r / min, and the stirring time is 0.5h; the mixed raw materials are obtained, and then the mixed raw materials are added to the mixing Further mixing is carried out in the mixer, the temperature of the mixer is kept at 300°C, and the vacuum degree in the mixer is 0.5Pa to form the raw material of tungsten-based plastic wire;

[0060] S2: Making tungsten-based plastic wire

[0061] The tungsten-based plastic wire raw material obtained in step S1 is extruded through an extruder, the extrusion temperature is 275 ° C, the extrusion pressure is maintained at 3.1 bar, and the diameter of the extruded tungsten-based plastic wi...

Embodiment 3

[0078] A method of 3D printing tungsten billet copper infiltration by tungsten powder fuse jetting, comprising the following steps:

[0079] S1: Raw material ratio

[0080] Put the plastic-based material and tungsten powder into the mixing device according to the volume ratio of 3:5 and mix them. The purity of the tungsten powder is 99.4%, the stirring speed is 100r / min, and the stirring time is 0.8h; the mixed raw materials are obtained, and then the mixed raw materials are added to the mixing Further mixing is carried out in the mixer, the temperature of the mixer is kept at 315°C, and the vacuum degree in the mixer is 0.8Pa to form the raw material of tungsten-based plastic wire;

[0081] S2: Making tungsten-based plastic wire

[0082] The tungsten-based plastic wire raw material obtained in step S1 is extruded through an extruder, the extrusion temperature is 277°C, the extrusion pressure is maintained at 3.2bar, the diameter of the extruded tungsten-based plastic wire is...

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Abstract

The invention discloses a method for conducting copper infiltration on a 3D printed tungsten blank through tungsten powder fuse jetting, and relates to the technical field of 3D printing. The method comprises the steps of S1, raw material proportioning, S2, tungsten-based plastic wire manufacturing, S3, 3D printing, S4, high-temperature sintering, S5, copper infiltration, S6, heat treatment and S7, machining. Tungsten powder and a plastic-based material are mixed, a tungsten-based plastic wire is manufactured and is heated into a molten fluid through a wire feeder, jetting 3D printing is performed to obtain a designed tungsten blank, high-temperature sintering is performed on the tungsten blank, a plastic-based high-molecular material is removed, a porous tungsten blank is prepared, and copper infiltration is performed to obtain the required tungsten-copper part; according to the method, jetting 3D printing is adopted, the printing efficiency is relatively high, the printing equipment is simplified, and the printing cost is greatly reduced; the tungsten blank subjected to jetting printing is adopted, the method is close to a traditional tungsten powder pressing and sintering technology, the tungsten powder is not molten, and retained copper infiltration pores are uniform.

Description

technical field [0001] The invention relates to the technical field of manufacturing products from metal powder, in particular to a method for copper infiltrating a tungsten billet by using tungsten powder fuse jet 3D printing. Background technique [0002] 3D printing (3DP) is a kind of rapid prototyping technology, also known as additive manufacturing. It is based on digital model files and uses bondable materials such as powdered metal or plastic to construct by layer-by-layer printing. object technology. [0003] 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing and industrial design, and is gradually used in the direct manufacture of some products. There are already parts printed using this technology. The technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/18B22F10/64B22F3/26B22F1/00B33Y10/00B33Y40/20B33Y70/10
CPCB22F3/1121B22F3/26B22F3/24B33Y10/00B33Y40/20B33Y70/10B22F2003/248B22F1/10
Inventor 周宁周兴杨瑞刘萍邵红颜王万刚
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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