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CoCrMo alloy dental crown 3D printing and electrolytic polishing composite processing method

A 3D printing and electropolishing technology, applied in additive processing, tooth filling, additive manufacturing, etc., can solve the problem of high surface roughness, and achieve the effect of high preparation efficiency, excellent corrosion resistance and wear resistance, and mechanical properties.

Inactive Publication Date: 2018-07-20
广东华快光子科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the CoCrMo alloy crowns processed by 3D printing often have a relatively high surface roughness, and the surface is covered with incompletely melted metal particles. Such crowns need further surface treatment to be suitable for baking varnish and clinical application.

Method used

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  • CoCrMo alloy dental crown 3D printing and electrolytic polishing composite processing method
  • CoCrMo alloy dental crown 3D printing and electrolytic polishing composite processing method
  • CoCrMo alloy dental crown 3D printing and electrolytic polishing composite processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Place the CoCrMo alloy powder evenly in the 3D printing cavity.

[0033] A three-dimensional solid model was established by computer design, and the program was set to generate a cross-sectional layered model with a thickness of 20 μm per layer along the Z direction and a scanning path program for each layer.

[0034] The process parameters of 3D printing are: power 45W, scanning speed 250mm / s, spot diameter 60μm, scanning distance 70μm, studio oxygen concentration <50ppm.

[0035] Start the printing program, and the laser will print the first layer of cross-sectional graphics according to the set scanning program. After the first layer is completed, the working platform will drop 20 μm along the Z-axis direction, and the second layer of cross-sectional graphics will be printed. The above process cycle Carried out to obtain article 1.

[0036] Take out the part 1 from the molding cavity, clean the oil stains on the surface of the part with acetone, rinse with water and...

Embodiment 2

[0044] Place the CoCrMo alloy powder evenly in the 3D printing cavity.

[0045] A three-dimensional solid model was established by computer design, and the program was set to generate a cross-sectional layered model with a thickness of 20 μm per layer along the Z direction and a scanning path program for each layer.

[0046] The process parameters of 3D printing are: power 80W, scanning speed 400mm / s, spot diameter 60μm, scanning distance 70μm, studio oxygen concentration <50ppm.

[0047] Start the printing program, and the laser will print the first layer of cross-sectional graphics according to the set scanning program. After the first layer is completed, the working platform will drop 20 μm along the Z-axis direction, and the second layer of cross-sectional graphics will be printed. The above process cycle Carried out to obtain article 1.

[0048] Take out the article 1 from the molding cavity, clean the oil stain on the surface of the article with acetone, clean it with a...

Embodiment 3

[0056] Place the CoCrMo alloy powder evenly in the 3D printing cavity.

[0057] A three-dimensional solid model was established by computer design, and the program was set to generate a cross-sectional layered model with a thickness of 20 μm per layer along the Z direction and a scanning path program for each layer.

[0058] The process parameters of 3D printing are: power 45W, scanning speed 250mm / s, spot diameter 60μm, scanning distance 70μm, studio oxygen concentration <50ppm.

[0059] Start the printing program, and the laser will print the first layer of cross-sectional graphics according to the set scanning program. After the first layer is completed, the working platform will drop 20 μm along the Z-axis direction, and start to print the second layer of cross-sectional graphics. The above process loops Carried out to obtain article 1.

[0060] Take out the part 1 from the molding cavity, clean the oil stains on the surface of the part with acetone, rinse with water and ...

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PUM

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Abstract

The invention discloses a CoCrMo alloy dental crown 3D printing and electrolytic polishing composite processing method. The CoCrMo alloy dental crown 3D printing and electrolytic polishing composite processing method comprises the steps that CoCrMo alloy powder is placed in a 3D printing forming cavity, a three-dimensional model is established, and the thicknesses of model bodies and scanning pathprograms of all layers are set; the programs are started, the cross-sectional layered model body of the first layer is printed, after printing is completed, a working platform descends in the vertical direction, the descending height is the thickness of each model body, the model body of the second layer is printed, the process is carried out in cycles, and a workpiece is obtained; the workpieceis taken out, cleaned through a cleaning agent and blow-dried; the workpiece is connected with a positive electrode of a power supply, a negative electrode of the power supply is connected with counterpoint electrodes, and the workpiece keeps separated from the counterpoint electrodes; the workpiece and the counterpoint electrodes are placed in an electrolyte simultaneously for electrolytic polishing; and after electrolytic polishing, the workpiece is taken out, cleaned in clear water and then blow-dried. A dental crown treated through the CoCrMo alloy dental crown 3D printing and electrolyticpolishing composite processing method is high in preparation efficiency, the surface roughness meets the processing requirement, and corrosion resistance and abrasion resistance are achieved.

Description

【Technical field】 [0001] The invention relates to a 3D printing and electrolytic polishing composite processing preparation method for a medical CoCrMo alloy crown, belonging to the technical field of metal selective laser melting. 【Background technique】 [0002] 3D printing technology is a kind of rapid prototyping technology. It uses the principle of discrete accumulation, based on digital model files, and uses powdered metal materials to construct three-dimensional objects by layer-by-layer printing. Compared with traditional manufacturing methods, 3D printing technology can reduce the loss of raw materials, simplify the production process, and improve production efficiency without reducing product quality. At present, the 3D printing methods of metal materials mainly include: Selective Laser Melting (SLM), Laser Engineered Net Shaping (LENS), Electron Beam Selective Melting (EBSM), etc. [0003] Electropolishing is a surface treatment technique aimed at improving metal ...

Claims

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Application Information

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IPC IPC(8): B22F3/105C25F3/26A61C5/77B33Y10/00
CPCC25F3/26B33Y10/00B22F10/00B22F10/62B22F10/36B22F10/366B22F10/68B22F10/28Y02P10/25
Inventor 戚文军梁崇智田杰况兰李吉帅
Owner 广东华快光子科技有限公司