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A 3D printing ceramic process

A ceramic technology and 3D printing technology, applied in the field of ceramic manufacturing, can solve the problems of difficulty in improving the hardness and strength of castings, weak bonding of powdered binders, loose structure of castings, etc., and achieve the promotion of hardness and strength. Evaporative removal and uniform performance

Active Publication Date: 2017-11-14
FOSHAN HUAZHI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the powdery binder is not firmly bonded, and the structure of the casting is loose. It is difficult to improve the hardness and strength of the casting made by this technology.

Method used

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  • A 3D printing ceramic process
  • A 3D printing ceramic process
  • A 3D printing ceramic process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Weigh the spray material by percentage: 96% ceramic powder, 2% low-temperature binder and 2% medium-temperature binder, wherein the particle size of the ceramic powder, low-temperature binder and medium-temperature binder is 1-2 μm.

[0063] Mix ceramic powder, granular low-temperature binder and medium-temperature binder evenly, and pour them into the nozzle of the printer.

[0064] In the case of feeding the protective gas, the ceramic 3D printer is used to spray the material layer by layer, and the rough blank is obtained by using the selective laser sintering technology;

[0065] Put the rough billet into the sintering furnace, adjust the temperature to 600°C for medium temperature sintering;

[0066] After medium-temperature sintering, the temperature of the sintering furnace is raised to 1650°C for high-temperature sintering, and finally the product is obtained.

Embodiment 2

[0068] Weigh the spray material according to the percentage: 96% ceramic powder, 2% low-temperature binder and 2% medium-temperature binder, of which the ceramic powder is 1-2μm, and the particle size of the low-temperature binder is 0.1-0.5 through the granulation process The particle size of mm and medium temperature binder is 0.1-0.5mm.

[0069] Mix ceramic powder, granular low-temperature binder and medium-temperature binder evenly, and pour them into the nozzle of the printer.

[0070] In the case of feeding the protective gas, the ceramic 3D printer is used to spray the material layer by layer, and the rough blank is obtained by using the selective laser sintering technology;

[0071] Put the rough billet into the sintering furnace, adjust the temperature to 600°C for medium temperature sintering;

[0072] After medium-temperature sintering, the temperature of the sintering furnace is raised to 1650°C for high-temperature sintering, and finally the product is obtained. ...

Embodiment 3

[0074] Weigh the spray material according to the percentage: 96% ceramic powder, 2% low-temperature binder and 2% medium-temperature binder, of which the ceramic powder is 1-2μm, and the particle size of the low-temperature binder is 1-2mm through the granulation process And the particle size of medium temperature binder is 1-2mm.

[0075] Mix ceramic powder, granular low-temperature binder and medium-temperature binder evenly, and pour them into the nozzle of the printer.

[0076] In the case of feeding the protective gas, the ceramic 3D printer is used to spray the material layer by layer, and the rough blank is obtained by using the selective laser sintering technology;

[0077] Put the rough billet into the sintering furnace, adjust the temperature to 600°C for medium temperature sintering;

[0078] After medium-temperature sintering, the temperature of the sintering furnace is raised to 1650°C for high-temperature sintering, and finally the product is obtained.

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Abstract

The invention discloses a 3D printing ceramic process, comprising the following steps: granulation: pre-forming low-temperature binder and medium-temperature binder into granules respectively, the particle size of the low-temperature binder is 0.1-2 mm, and the medium-temperature binder granules are The diameter is 0.1-2mm; Mixing: Mix the granulated low-temperature binder and medium-temperature binder with powdered ceramic powder uniformly, as spray material; Printing: In the case of introducing protective gas, use a ceramic 3D printer to The material is sprayed out and the rough blank is obtained by the selective laser sintering technology; medium temperature sintering: put the rough blank into the sintering furnace, and adjust the temperature to 400-700 ℃ for medium temperature sintering; high temperature sintering: after the medium temperature sintering, the sintering furnace temperature Raised to 1500‑1700℃ for high temperature sintering, and finally the product is obtained. By adopting the invention, the binder can be more easily evaporated, so that the cohesiveness of the ceramic powder is improved, thereby improving the hardness and strength of the product.

Description

technical field [0001] The invention relates to the field of ceramic manufacturing, in particular to a 3D printing ceramic process. Background technique [0002] In the 1990s, the Massachusetts Institute of Technology invented a 3D printing technology, which is based on a digital model file, using powdered metal or plastic and other bondable materials to construct objects by layer-by-layer printing. technology. In the past, it was often used to make models in the fields of mold manufacturing and industrial design, and is now gradually being used in the direct manufacture of some products. In particular, some high-value applications (such as hip joints or teeth, or some aircraft parts) already have parts printed using this technology. With the in-depth research on the application of 3D printing technology in ceramic materials, the use of 3D printing ceramic devices has become a reality. Traditional ceramic production uses clay for shaping, drying, mold opening, inverting, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/632C04B35/634B28B1/00
Inventor 张乾方马文珍张耀辉李毅
Owner FOSHAN HUAZHI ADVANCED MATERIALS CO LTD
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