Powder material for 3D printing

A 3D printing and powder technology, which is applied in the field of 3D printing, can solve the problems that are not applicable to 3D printing fields, and achieve the effects of increasing hardness, improving alloy strength and high temperature performance, and improving wear resistance

Active Publication Date: 2019-10-29
SEED TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the use of tungsten carbide and cobalt is mostly concentrated in traditional fields such as traditional casting, powder metallurgy, and finishing cladding, such as CN109652712A, CN109434116A, CN106191609A, CN10435772

Method used

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  • Powder material for 3D printing
  • Powder material for 3D printing
  • Powder material for 3D printing

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] The components based on the technical solution of the present invention are as follows:

[0104] Sintered WC-Co cemented carbide spherical particles accounted for 10%, coarse crystal or single crystal tungsten carbide particles accounted for 20%, Co-based alloy accounted for 70%;

[0105] Sintered WC-Co cemented carbide spherical particles are: Ct 5.6% ~ 6.0%, Cf ≤ 0.08%, O ≤ 0.1%, Fe ≤ 0.08%, Co 5.8% ~ 6.2%, Cr ≤ 0.05%, Ni ≤ 0.05%, Ti≤0.05%, Si≤0.01%, Ca≤0.01%, the rest is W;

[0106] Coarse crystal or single crystal tungsten carbide particles are: Ct 6.12%, Cf≤0.08%, Cr≤0.03%, Co≤0.02%, Fe≤0.03%, Mo≤0.005%, Ca≤0.002%, Si≤0.003%, Al ≤0.001%, S≤0.005%, O≤0.05%, the rest is W;

[0107] Co-based alloys are: C 1.15%, Mn≤1.0%, W4.0%, Ni≤3.0%, Cr29.0%, Mo≤1.0%, Fe≤3.0%, Si≤2.0%, and the rest is Co.

Embodiment 2

[0109] The components based on the technical solution of the present invention are as follows:

[0110] Sintered WC-Co cemented carbide spherical particles accounted for 10%, coarse crystal or single crystal tungsten carbide particles accounted for 20%, Co-based alloy accounted for 70%;

[0111] Sintered WC-Co cemented carbide spherical particles are: Ct 5.5% ~ 5.8%, Cf ≤ 0.08%, O ≤ 0.1%, Fe ≤ 0.08%, Co 7.5% ~ 8.5%, Cr ≤ 0.05%, Ni ≤ 0.05%, Ti≤0.05%, Si≤0.01%, Ca≤0.01%, the rest is W;

[0112] Coarse crystal or single crystal tungsten carbide particles are: Ct 6.18%, Cf≤0.08%, Cr≤0.03%, Co≤0.02%, Fe≤0.03%, Mo≤0.005%, Ca≤0.002%, Si≤0.003%, Al ≤0.001%, S≤0.005%, O≤0.05%, the rest is W;

[0113] Co-based alloys are: C1.2%, Mn≤1.0%, W4.5%, Ni≤3.0%, Cr29.0%, Mo≤1.0%, Fe≤3.0%, Si≤2.0%, and the rest is Co.

Embodiment 3

[0115] The components based on the technical solution of the present invention are as follows:

[0116] Sintered WC-Co cemented carbide spherical particles accounted for 15%, coarse crystal or single crystal tungsten carbide particles accounted for 40%, Co-based alloy accounted for 45%;

[0117] Sintered WC-Co cemented carbide spherical particles are: Ct 5.6% ~ 6.0%, Cf ≤ 0.08%, O ≤ 0.1%, Fe ≤ 0.08%, Co 5.8% ~ 6.2%, Cr ≤ 0.05%, Ni ≤ 0.05%, Ti≤0.05%, Si≤0.01%, Ca≤0.01%, the rest is W;

[0118] Coarse crystal or single crystal tungsten carbide particles are: Ct 6.12%, Cf≤0.08%, Cr≤0.03%, Co≤0.02%, Fe≤0.03%, Mo≤0.005%, Ca≤0.002%, Si≤0.003%, Al ≤0.001%, S≤0.005%, O≤0.05%, the rest is W;

[0119] Co-based alloys are: C 1.15%, Mn≤1.0%, W4.0%, Ni≤3.0%, Cr29.0%, Mo≤1.0%, Fe≤3.0%, Si≤2.0%, and the rest is Co.

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Abstract

The invention provides a powder material for 3D printing. The powder comprises a wear-resistant phase and a binding phase, wherein a mixture of sintered WC-Co hard alloy spherical particles and tungsten carbide particles serves as the wear-resistant phase, and Co-based alloy serves as the bonding phase. The weight percentage of the wear-resisting phase is 20-60%, the weight percentage of the bonding phase is 40-80%, the weight percentage of the sintered WC-Co hard alloy spherical particles is 5-15%, and the weight percentage of the coarse-grained or monocrystalline tungsten carbide particles is 15-45%. The failure period can be effectively avoided or delayed, and the wear resistance and working efficiency of the material are improved.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a powder material for 3D printing. Background technique [0002] Currently, in the field of 3D printing. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which basically remain unchanged even at a temperature of 500 °C , It still has high hardness at 1000 °C. Based on these advantages, tools made of cemented carbide are mainly used in various industries such as machinery, automotive engineering and building materials. At present, in 3D printing, the relatively mature powder used is the combination of tungsten carbide and nickel base disclosed in CN105458256A, CN109694977A, CN106424714fA, etc. However, in the prior art, the use of tungsten carbide and cobalt is mostly concentrated in traditional fields such as traditiona...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/105B33Y10/00B33Y70/00C22C19/07C22C29/08C22C32/00
CPCB22F1/0003B33Y70/00B33Y10/00C22C32/0052C22C29/005C22C29/08C22C19/07B22F10/00B22F10/34B22F10/28Y02P10/25
Inventor 张汝南文磊刘彬匡小围
Owner SEED TECH CORP LTD
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