Production method of medical fine-grain titanium/titanium alloy bar

A production method and technology for titanium alloys, applied in metal processing equipment and other directions, can solve the problems of low yield, unstable product structure and properties, and achieve the effects of consistent performance, stable microstructure and mechanical properties, and low cost.
CN103320734BActive Publication Date: 2015-02-18西安赛特新材料科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
西安赛特新材料科技股份有限公司
Publication Date
2015-02-18

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Abstract

The invention discloses a production method of a medical fine-grain titanium / titanium alloy bar. The production method comprises the following steps of: performing combined multidirectional upsetting and stretching deformation on a forging blank above and below a phase transformation point T(beta); and after the last upsetting and stretching deformation, directly stretching the upset blank into a finished product of bar. The production method disclosed by the invention is simple and convenient, the technology is standard, little cracking occurs in a production process, large-specification ingot and large forging equipment are not required, and the cost is low. The production method disclosed by the invention has no limit to the alloy type, the ingot specification and the processing means, and is suitable for the production and processing of a small number of medical titanium / titanium alloy bars of multiple varieties and multiple specifications. According to the medical fine-grain titanium / titanium alloy bar disclosed by the invention, the microscopic structure and mechanical property of the product are stable, and the two ends are consistent with the middle part in performance.
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Description

technical field

[0001] The invention belongs to the technical field of medical implant materials, and relates to a production method of medical fine-grained titanium / titanium alloy rods. Background technique

[0002] Bio-type knee joints, bone joints and other medical implant materials made of titanium alloys are widely used day by day. Kneecaps, joints and sockets of medical implants are mainly made of titanium or titanium alloy rods with a specification of Φ50㎜~Φ100㎜. The microstructure and properties of medical titanium and titanium alloy rods are subject to the same standards as those of small specifications (diameter less than 30mm). The average grain size of the annealed transverse microstructure of pure titanium products is not coarser than grade 7 in GB / T6394. The annealed transverse microstructure of TC4, TC4ELI, and TC20 titanium alloy products should be α+β processed structure, and it should be evaluated according to Appendix A of GB / T13810-2007 standard, and it...

Claims

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