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A process for laser-assisted 3D printing of graphene teeth

A 3D printing, laser-assisted technology, used in 3D printing, dentistry, dental prosthesis, etc., can solve the problems of incomplete quenching, high energy consumption of teeth, long processing time, etc., and achieve short quenching time, strong competitiveness, and heat treatment steps. less effect

Active Publication Date: 2018-07-24
GUANGZHOU FENGSHANG ELECTRIC APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a process for laser-assisted 3D printing of graphene teeth, which overcomes the problems of high energy consumption, long processing time, and incomplete quenching of traditional teeth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The formula and the technology of the laser-assisted 3D printing graphene tooth of the present embodiment, it comprises the steps:

[0019] (1) 3D printed crown metal liner: the ratio of the powder base material of the crown metal liner is selected as follows (Co: 63%; Cr: 25%; Mo: 7%; Si: 0.8%; Mn: 0.8%; Fe : 0.8%; Ni: 0.08%; the thickness of the powder layer is 17um, set the temperature at 680°C, heat for 2h, and grind it with a ball mill until the particle size of the powder is 80um. Raise the temperature to 980°C, keep it for 2h, cool to 280°C, add graphite ene, the ratio is W 基体 :W 石墨烯 =120:1. The set process parameters of the laser-assisted 3D fabrication of the crown metal liner are as follows: the laser power used is 198W, and the spot diameter is 80-100um. The size of the designed graphene crown metal liner is 23mm×2.8mm×0.5mm (length×width×height), and the duration of laser irradiation is 5s.

[0020] (2) Peripheral 3D printed crown of graphene crown metal...

Embodiment 2

[0023] The formula and the technology of the laser-assisted 3D printing graphene tooth of the present embodiment, it comprises the steps:

[0024] (1) 3D printed crown metal liner: the ratio of powder base material for the crown metal liner is selected as follows (Co: 50%; Cr: 28%; Mo: 5%; Si: 1.2%; Mn: 0.8%; Fe : 0.5%; Ni: 0.1%; the thickness of the powder layer is 15um, the temperature is set at 720°C, heated for 1.8h, and ground by a ball mill until the particle size of the powder is 50um. The temperature is raised to 880°C, kept for 2.8h, cooled to 120°C, Add graphene, the ratio is W 基体 :W 石墨烯 =80:1. The set process parameters of the laser-assisted 3D fabrication of the crown metal liner are as follows: the laser power used is 200W, and the spot diameter is 80um. The size of the designed graphene crown metal liner is 22mm×2.6mm×0.5mm (length×width×height), and the duration of laser irradiation is 3s.

[0025] (2) 3D print the crown on the periphery of the metal liner o...

Embodiment 3

[0028] The formula and the technology of the laser-assisted 3D printing graphene tooth of the present embodiment, it comprises the steps:

[0029] (1) 3D printed crown metal liner: the ratio of the powder base material of the crown metal liner is selected as follows (Co: 46%; Cr: 32%; Mo: 6%; Si: 0.6%; Mn: 0.9%; Fe : 1.5%; Ni: 0.03%; the thickness of the powder layer is 14um, the setting temperature is 660°C, heat for 2.3h, and grind to the powder particle size of 70um through ball mill. Raise the temperature to 980°C, keep it for 2h, cool to 160°C, add Graphene, the ratio is W 基体 :W 石墨烯 =100:1. The set process parameters of the laser-assisted 3D fabrication of the crown metal liner are as follows: the laser power used is 178W, and the spot diameter is 85um. The size of the designed graphene crown metal liner is 23mm×2.7mm×0.5mm (length×width×height), and the duration of laser irradiation is 5s.

[0030](2) 3D print the crown on the periphery of the metal liner of the grap...

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Abstract

The invention discloses a laser-assisted graphene tooth 3D printing process. The technique is combined with the graphene and the laser heat treatment technique, a high-quality graphene tooth is obtained through 3D printing, the graphene is added into a tooth base material, the property of the base material is not changed, the coefficient of thermal expansion of the tooth is reduced, the overall mechanical property is improved, and the ultra-intense laser is radiated on the tooth material in the laser heat treatment technique to improve the wear resistance, the metal-ceramic binding tightness and the material density of the tooth material. Based on the laser, the characteristics of instantaneous high temperature, controllable irradiation and short quenching time are provided, the printed graphene tooth not only is accurately fitted with the alveolar ridge of a patient, but also is high in stability, wear resistance and mechanical strength, a plurality of tests like the metal-ceramic binding strength test, the thermal expansion coefficient experiment and the surface roughness test indicate that the graphene tooth prepared through the technique has better properties than the traditional material, and has an industrialized development future.

Description

technical field [0001] The invention relates to the field of tooth preparation, in particular to a process for laser-assisted 3D printing of graphene teeth. Background technique [0002] 3D printing is based on digital model files, and uses bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. [0003] Teeth, as a modern restoration method for teeth, is an ideal restoration. In the part where the tooth is missing or missing, cast precious metal is used as the core of the support, and then porcelain is used on the outside to achieve a restoration method similar to the color and function of the real tooth, aiming to restore the shape and function of the tooth body, fracture resistance Strong and realistic in color and appearance, smooth surface, strong wear resistance, no deformation, stable color, it is a permanent restoration. [0004] Graphene is a new type of material with a two-dimensional sheet-like single-layer structure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C13/00B33Y30/00B33Y50/00
CPCA61C13/0019B33Y30/00B33Y50/00
Inventor 楚双印张文娟尹宗杰李芳
Owner GUANGZHOU FENGSHANG ELECTRIC APPLIANCE
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