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Biomedical high-strength and toughness Ti-6Al-4V titanium alloy bar and preparation method thereof

A ti-6al-4v, high strength and toughness technology, applied in the field of metal material preparation, can solve the problems of low hardness and low plasticity, and achieve the effect of improving production efficiency

Active Publication Date: 2015-09-02
西安赛特思迈钛业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a biomedical high-strength Ti-6Al-4V titanium alloy rod, which solves the problems of low plasticity and low hardness of the existing Ti-6Al-4V titanium alloy under high strength

Method used

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preparation example Construction

[0021] A kind of preparation method of biomedical high-strength toughness Ti-6Al-4V titanium alloy bar of the present invention, concrete implementation steps are as follows:

[0022] Step 1: Preparation of ingot: Sponge titanium, aluminum vanadium alloy, and aluminum beans are used as raw materials, according to the content range of each element: Al 6.0% to 6.3%, V 4.0% to 4.3%, O 0.16% to 0.18%, Fe 0.18 % to 0.25%, Ti 88.97% to 89.66% to calculate the ingredients, weigh the above raw materials and mix them, and then use a 3500t oil press to press them into electrode blocks, and then use a vacuum consumable arc melting furnace to prepare a diameter of 460mm casting ingots to make ingots;

[0023] Step 2: Forging and elongating into billets: the ingots obtained in step 1 are subjected to billet forging and elongating processes in a gas furnace, and multiple fires are used to reversing pier drawing. The heating temperature is 1050-1150 ° C, and the heat preservation The time i...

Embodiment 1

[0028] Preparation of ingot: Preparation of ingot: use sponge titanium, aluminum vanadium alloy, and aluminum beans as raw materials, and calculate the ingredients according to the content range of each element: Al 6.0%, V 4.0%, O 0.16%, Fe 0.18%, and Ti 88.97% , and the above raw materials were weighed and mixed respectively, and then pressed into an electrode block by using a 3500t hydraulic press, and then used in a vacuum consumable arc melting furnace to prepare an ingot with a diameter of 460mm through three meltings to obtain an ingot; the obtained ingot The billet forging and elongation process is carried out with a gas furnace, and the multi-fire reversing piercing is adopted. The heating temperature is 1050°C and the holding time is 200min, so that the diameter of the ingot is reduced to 200mm; then the elongation process is carried out once. The heating temperature is 1000°C, the final forging temperature is 900°C, and the holding time is 200min, and a billet with a ...

Embodiment 2

[0030]Preparation of ingot: Preparation of ingot: use titanium sponge, aluminum vanadium alloy, and aluminum beans as raw materials, and calculate the ingredients according to the content range of each element: Al 6.2%, V 4.2%, O 0.17%, Fe 0.22%, and Ti 89.21% , and the above raw materials were weighed and mixed respectively, and then pressed into an electrode block by using a 3500t hydraulic press, and then used in a vacuum consumable arc melting furnace to prepare an ingot with a diameter of 460mm through three meltings to obtain an ingot; the obtained ingot The billet forging and elongation process is carried out with a gas furnace, and the multi-fire reversing pier drawing is adopted. The heating temperature is 1100°C and the holding time is 220min, so that the diameter of the ingot is reduced to 210mm; then the elongation process is carried out once, The heating temperature is 1025°C, the final forging temperature is 925°C, and the holding time is 200min, and a billet with...

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Abstract

The invention discloses a biomedical high-strength and toughness Ti-6Al-4V titanium alloy bar which is prepared from the following elements in percentage by mass: 6.0%-6.3% of Al, 4.0%-4.3% of V, 0.16%-0.18% of O, 0.18%-0.25% of Fe and 88.97%-89.66% of Ti, wherein the sum of the content of the elements is 100%. The prepared bar has the characteristics of high hardness, high toughness and high strength, can be widely applied to a medical spinal jackscrew fixing system. The invention further discloses a preparation method of the bar. The method comprises the following steps: preparing a cast ingot, forging, drawing into a square billet, and rolling into the bar; and carrying out heat treatment and finish machining. Massive production of the titanium alloy bar which is high in strength and toughness and relatively good in mechanical property consistency can be realized; and the production efficiency of the high-toughness titanium alloy bar is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and relates to a biomedical high-strength and toughness Ti-6Al-4V titanium alloy rod, and also relates to a preparation method of the titanium alloy rod. Background technique [0002] Titanium and titanium alloys have excellent elastic modulus, and are similar to human bones, corrosion-resistant, and have excellent biological and mechanical compatibility. They are especially suitable for making medical surgical implants and are widely used in surgical orthopedic operations. middle. Titanium alloys are usually implanted in the body as stress-bearing devices, such as spinal top wires, screws, bone nails, etc. Among them, Ti-6Al-4V titanium alloy is an ideal surgical implant due to its excellent mechanical properties such as high strength and high toughness. Entry material. Since the spinal top wire (diameter range 10-10.5mm) fixation system is used in conjunction with U-shaped ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22F1/18
Inventor 魏芬绒樊亚军王海崔文俊刘煦陈志宏朱峰
Owner 西安赛特思迈钛业有限公司
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