3D printing and electrolytic polishing combined machining system for CoCrMo dental crown

Abstract

The invention discloses a 3D printing and electrolytic polishing combined machining system for a CoCrMo dental crown. The combined machining system comprises laser selective melting printing equipment and electrolytic polishing equipment, wherein the laser selective melting printing equipment comprises an optical transmission system and a vacuum chamber which can be incident by laser of the optical transmission system, a moulding platform which can be lifted is arranged in the vacuum chamber, a powder feeding device used for conveying printing powder is also arranged in the vacuum chamber, the powder feeding device is connected with a power laying device which can lay the printing powder on the powder feeding device onto the moulding platform; the electrolytic polishing equipment comprises an electrolytic tank which is used for placing a product and filled with electrolyte, a para-position electrode is fixed in the electrolytic tank, the para-position electrode is connected with the cathode of a power supply, and when electrolytic polishing is carried out on the product, the product is connected with the anode of the power supply. The combined machining system disclosed by the invention has the advantages that the laser selective melting printing equipment and the electrolytic polishing equipment are combined, surface roughness of the treated product meets post processing requirement, tissues are compact and controllable, mechanical properties can be configured, and anticorrosion and wear-resistant properties are excellent.

Description

[0001] 【Technical field】 [0002] The invention relates to a 3D printing and electrolytic polishing composite processing system for medical CoCrMo alloy crowns, belonging to the technical field of metal selective laser melting. [0003] 【Background technique】 [0004] 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. [0005] CoCrMo alloy has good physical and chemical properties and mechanical pro...

AI Technical Summary

Problems solved by technology

However, the CoCrMo alloy crowns processed by 3D printing often have high surface roughness, the surface is covered with incompletely melted metal particles, and the polishing process after printing is complicated and the precision is low. Such crowns need further surface treatment to Suitable for baking and clinical application

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