Method for manufacturing pure titanium porous structure through selective laser melting

Abstract

The invention provides a method for manufacturing a pure titanium porous structure through selective laser melting. The method for manufacturing the pure titanium porous structure through selective laser melting comprises the following steps that firstly, a three-dimensional model of the porous structure to be manufactured is built in a computer; secondly, hierarchical preprocessing is conducted on the built three-dimensional model; thirdly, 3D printing parameters are set, hierarchical processing is conducted on the three-dimensional mode, and a file of a corresponding format is saved and exported; fourthly, the exported file is imported into 3D printing equipment, and 3D printing is conducted. According to the method for manufacturing the pure titanium porous structure through selective laser melting, metal parts with various macro-structure porous structures can be manufactured according to actual requirements, one-time forming is realized, the shortcomings of unstable mechanical properties and a simplex shape caused by a traditional processing method are overcome, and processing efficiency and economic benefit are improved.

Description

technical field [0001] The invention relates to a method for manufacturing a porous structure, in particular to a method for preparing a pure titanium porous structure by selective laser melting. Background technique [0002] Due to their excellent mechanical properties and biocompatibility, titanium and its alloys are widely used in the field of clinical bone repair and bone implantation. However, the elastic modulus of dense titanium and its alloys is much higher than that of human bone, which can easily cause a "stress shielding" effect, causing problems such as osteonecrosis, distortion, and implant loosening. Due to their unique pore structure, porous titanium and its alloys have properties matching those of the bone hard tissue to be replaced, which can effectively weaken or eliminate the stress shielding effect, and at the same time facilitate the growth of osteoblasts in the pores to form an internal locking mosaic Fixation, promoting tissue regeneration and reconst...

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Problems solved by technology

[0003] In view of this, it is necessary to address the problems existing in the prior art and provide a method of selective laser melting to prepare the porous structure of pure titanium, which can solve the problem that the prior art cannot be formed at one time, and can control the forming size of the parts more accurately. Realization of one-time molding of porous structure

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