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Preparation method of titanium alloy kirschner wire with high strength and plastic matching

A technology of titanium alloy and Kirschner wire, which is applied in the field of processing titanium alloy materials for medical use, can solve the problems of low plasticity and high strength, achieve high strength, good plasticity, and eliminate tissue distortion

Active Publication Date: 2020-08-28
中科锐金山东钛业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical problem solved by the present invention is to provide a preparation method of titanium alloy Kirschner wire material with high strength and plastic matching, in order to solve the high strength and low plasticity of Ti-6Al-4V alloy Kirschner wire material in the production of medical products The problem

Method used

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  • Preparation method of titanium alloy kirschner wire with high strength and plastic matching
  • Preparation method of titanium alloy kirschner wire with high strength and plastic matching
  • Preparation method of titanium alloy kirschner wire with high strength and plastic matching

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Effect test

Embodiment 1

[0035] The composition design of the titanium alloy Kirschner wire material in this embodiment, its mass percentage includes: Al element is 6.04%, V element is 4.07%, Fe element is 0.18%, O element is 0.10%, C element is 0.032%, H element 0.003%, N element 0.005%, and the balance is Ti.

[0036] The preparation method of the titanium alloy Kirschner wire material is as follows:

[0037] Step 1. Use sponge titanium, metal Al, intermediate alloy AlV, metal Fe, compound TiO 2 According to the ingredients of the titanium alloy, vacuum self-consumption is used for three times of smelting to obtain a titanium alloy ingot with stable and uniform composition.

[0038] Step 2: Open billet forging at 1100°C, finish forging at 950°C, control the holding time at 5 hours, and control the deformation per fire at 60%.

[0039] Step 3: Rolling is carried out with a tandem rolling mill, the rolling temperature is controlled at 900° C., the holding time is 1.5 hours, and the deformation of ea...

Embodiment 2

[0048]The composition design of the titanium alloy Kirschner wire material in this embodiment includes: Al element is 5.89%, V element is 4.20%, Fe element is 0.15%, O element is 0.13%, C element is 0.019%, H element 0.005%, N element 0.0027%, and the balance is Ti.

[0049] The preparation method of the titanium alloy Kirschner wire material is as follows:

[0050] Step 1. Use sponge titanium, metal Al, intermediate alloy AlV, metal Fe, compound TiO 2 According to the ingredients of the titanium alloy, vacuum self-consumption is used for three times of smelting to obtain a titanium alloy ingot with stable and uniform composition.

[0051] Step 2: Open billet forging at 1050°C, finish forging at 900°C, control the holding time at 2 hours, and control the deformation per fire at 40%.

[0052] Step 3: Rolling is carried out with a tandem rolling mill, the rolling temperature is controlled at 880° C., the holding time is 2 hours, and the deformation of each pass is controlled a...

Embodiment 3

[0061] The composition design of the titanium alloy Kirschner wire material in this embodiment includes: 6.20% for Al element, 3.88% for V element, 0.20% for Fe element, 0.085% for O element, 0.036% for C element, and 0.036% for H element. 0.0008%, N element 0.0035%, and the balance is Ti.

[0062] The preparation method of the titanium alloy Kirschner wire material is as follows:

[0063] Step 1. Use sponge titanium, metal Al, intermediate alloy AlV, metal Fe, compound TiO 2 According to the ingredients of the titanium alloy, vacuum self-consumption is used for three times of smelting to obtain a titanium alloy ingot with stable and uniform composition.

[0064] Step 2: Carry out billet forging at 1150°C, finish forging at 1000°C, control the holding time at 6 hours, and control the deformation per fire at 80%.

[0065] Step 3. Rolling is carried out with a tandem rolling mill, the rolling temperature is controlled at 930° C., the holding time is 1 hour, and the deformation...

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Abstract

The invention belongs to the technical field of medical titanium alloy material processing, and particularly relates to a preparation method of a titanium alloy kirschner wire with high strength and plastic matching. The titanium alloy is prepared from the chemical compositions in percentage by mass: 5.8% to 6.2% of Al, 3.8% to 4.2% of V, 0.15% to 0.2% of Fe, 0.08% to 0.13% of O, less than or equal to 0.05% of C, less than or equal to 0.005% of H, less than or equal to 0.01% of N and the balance of Ti; firstly, round bar billets are obtained by melting, forging and rolling processes, then a low-high-low hot deformation processing method and a composite processing method of a low-temperature hot deformation technology are adopted, and finally a finished wire is prepared by a processing method of stress relief annealing and centerless grinding. According to the preparation method, high-strength plastic Ti-6Al-4V alloy intramedullary needle wire for medical products can be produced, and qualified raw materials can be provided for manufacturing intramedullary needle products of orthopedic medical devices.

Description

technical field [0001] The invention belongs to the technical field of processing titanium alloy materials for medical use, and in particular relates to a preparation method of a high-strength plastic-matched titanium alloy Kirschner wire material, which is particularly suitable for Ti-6Al-4V alloy intramedullary needle wire material used in medical products. Background technique [0002] Titanium alloys (such as: Ti-6Al-4V alloy) have excellent biocompatibility, corrosion resistance, non-magnetic, non-toxic, and are widely used in the medical field. For the fixation of fractures with low stress such as short fractures or avulsion fractures, medical products made of filaments are generally used for fixation, but the products are required to have high strength, so as to ensure that the products will not be deformed during use. At present, most domestic methods use composition control or cold drawing to improve the strength of titanium alloys, but the plasticity of the materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C14/00B21C37/04C22F1/18
CPCB21C37/04C22C1/02C22C14/00C22F1/183
Inventor 柏春光张志强赵建杨锐
Owner 中科锐金山东钛业科技有限公司
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