Method for producing titanium alloy artware by adopting selective laser melting

Abstract

The invention relates to the field of material preparation, in particular to a method for producing titanium alloy artware by adopting selective laser melting. The method includes the steps: creating two-dimensional slicing data of a part structure to be produced and importing the two-dimensional slicing data into a metal powder laser melting system; setting processing technological parameters of the metal powder laser melting system; taking titanium alloy powder and spreading the titanium alloy powder on the metal powder laser melting system, and sequentially performing laser melting, powder sieving, heat treatment, wire cutting, cleaning, sand blasting, polishing and the like under the protection of inert gas to obtain the titanium alloy artware. According to the method, specific titanium alloy types and specification parameters are selected, and the processing technological parameters of the metal powder laser melting system are optimized for multiple times, so that the produced titanium alloy artware is high in precision, stable in shaping quality, small in distortion, excellent in mechanical property and good in surface smoothness through follow-up processing and has great artistic value.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a method for preparing titanium alloy handicrafts by using selective laser melting technology. Background technique [0002] Selective laser melting, referred to as SLM (Selective Laser Melting) technology, is evolved and upgraded from selective laser sintering technology, also known as direct metal laser sintering technology, which belongs to one of metal rapid prototyping technologies 3D printing or additive manufacturing technology is a high-tech manufacturing technology based on the material accumulation method. It integrates CAD, mechanical engineering, reverse engineering technology, layered manufacturing technology, material science, numerical control technology, and laser technology. It can directly, Automatically, quickly and accurately transform design ideas into prototypes with certain functions or direct manufacturing entities, thus providing a high-efficiency and ...

AI Technical Summary

Problems solved by technology

[0003] 3D printing technology is characterized by rapid manufacturing of single pieces or small batches, enabling product innovation and creativity to be converted from concept to entity, such as craft gift trays, mobile phone shapes, personalized rings, necklaces, conceptual artworks, trophies, lettering marks , U disk, small sculptures, human head, indoor and car personalized decorations, metal game models, etc., but now the personalized products for 3D printing are mainly plastic products, metal products are very few, and the quality of formed products is relatively low. Poor, mainly concentrated in low density, poor finish, etc. After forming, it does not have aesthetic and artistic value, and at the same time the cost is high, making it difficult to realize high-quality design products

[0004] Titanium alloys have the advantages of low density, high specific strength, good corrosion resistance, high heat resistance, and good process performance. They are usually materials for aerospace structures. Due to the many advantages of titanium alloys, they can also be colored. It is gradually loved by people; but the strength of titanium alloy is high, and it is difficult to process complex process patterns and graphics by traditional subtractive processing technology, so the current titanium alloy crafts are limited to some simple process castings and machined parts, and the artistic value There are not many high-level handicrafts. Among them, the application number is 201410153417.1, which discloses a pure titanium powder molding method based on selective laser melting technology. This method realizes the flexibility of using titanium powder to prepare parts, but the obtained The compactness, forming precision and roughness of metal parts are lacking and need to be further improved, which has always been a technical problem that those skilled in the art need to overcome

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