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Medical beta-titanium alloy powder material used for 3D printing and preparation method thereof

A β-titanium alloy and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems that titanium alloy powder is only suitable for small-scale production of powder, environmental pollution, wide range of particle size distribution, high content of inclusions, etc., to improve cold processing performance , reduce the content of oxygen and other impurities, and improve the effect of anti-corrosion

Active Publication Date: 2016-11-23
浙江亚通新材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of titanium alloy powder by this method is only suitable for small-scale production, and the prepared powder is seriously polluted by the environment. It not only has the disadvantages of high inclusion content and high oxygen content, but also has a wide range of particle size distribution.

Method used

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  • Medical beta-titanium alloy powder material used for 3D printing and preparation method thereof
  • Medical beta-titanium alloy powder material used for 3D printing and preparation method thereof
  • Medical beta-titanium alloy powder material used for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First weigh 50 kg of Ti20Ta alloy, 25 kg of Nb ingot, 1 kg of Zr ingot, 23.95 kg of sponge titanium and 0.05 kg of rare earth Er, and place them in an intermediate frequency induction melting furnace in the order of melting point from low to high, with a vacuum of 6 Pa, and charge Into argon, the pressure of argon is 2×10 -2Melting under Pa protective atmosphere, melting current is 85A, melting time is 25min; after the material is completely melted, it is vacuum-pumped and refined for 10min. Then the refined alloy melt was cast into a grinding tool to obtain a metal casting rod with a diameter of 60mm and a length of 50cm, which was used as a consumable electrode for electrode induction gas atomization. Then, the prepared titanium alloy master alloy rod is used as a consumable electrode, the furnace body is closed, and the vacuum is evacuated to 0.01Pa. At the same time, argon gas is passed through the annular nozzle for atmosphere protection. The argon gas pressure is ...

Embodiment 2

[0030] First weigh 50 kg of Ti20Ta alloy, 25 kg of Nb ingot, 1 kg of Zr ingot, 23.95 kg of sponge titanium and 0.05 kg of rare earth La, and place them in an intermediate frequency induction melting furnace in the order of melting point from low to high, with a vacuum of 6 Pa, and charge Into argon, the pressure of argon is 2×10 -2 Melting under Pa protective atmosphere, melting current is 85A, melting time is 25min; after the material is completely melted, it is vacuum-pumped and refined for 12min. Then the refined alloy melt was cast into a grinding tool to obtain a metal casting rod with a diameter of 60mm and a length of 50cm, which was used as a consumable electrode for electrode induction gas atomization. Then, the prepared titanium alloy master alloy rod is used as a consumable electrode, the furnace body is closed, and the vacuum is evacuated to 0.01Pa. At the same time, argon gas is passed through the annular nozzle for atmosphere protection. The argon gas pressure is...

Embodiment 3

[0032] First weigh 50 kg of Ti20Ta alloy, 25 kg of Nb ingot, 1 kg of Zr ingot, 23.9 kg of sponge titanium and 0.1 kg of rare earth Ce, and place them in an intermediate frequency induction melting furnace in the order of melting point from low to high, with a vacuum of 8 Pa, and charge Into argon, the pressure of argon is 2×10 -2 Melting under Pa protection atmosphere, melting current is 90A, and melting time is 30 minutes; after the material is completely melted, it is vacuum-pumped and refined for 15 minutes. Then the refined alloy melt was cast into a grinding tool to obtain a metal casting rod with a diameter of 60mm and a length of 50cm, which was used as a consumable electrode for electrode induction gas atomization. Then, the prepared titanium alloy master alloy rod is used as a consumable electrode, the furnace body is closed, and the vacuum is evacuated to 0.01Pa. At the same time, argon gas is passed through the annular nozzle for atmosphere protection. The argon gas...

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Abstract

The invention discloses a medical beta-titanium alloy powder material used for 3D printing and a preparation method thereof. The beta-titanium alloy molecular formula is Ti25Nb10Ta1ZrxR, and the medical beta-titanium alloy powder material is composed of, by weight, 25% of Nb, 10% of Ta, 1% of Zr, and the balance Ti, wherein R represents rear earth, the value range of x is 0.05-0.1, R is at least one of Y, La, Ce and Er, and Ta represents Ti20Ta alloy. The titanium alloy powder material is prepared through electrode induction smelting gas atomization, that is, metal liquid subjected to medium-frequency induction smelting and refining is cast into a grinding tool to obtain a metal cast rod, and the metal cast rod serves as a consumable electrode of electrode induction gas atomization; and then the powder material is prepared through an electrode induction atomization method. The high-strength low-modulus powder material Ti25Nb10Ta1Zr0.1R prepared through the method is high in purity, high in sphericity degree and free of toxicity, printed titanium alloy is high in strength (with the yield strength being 800-850 Mpa and the tensile strength being 1100-1250 Mpa) and low in elastic modulus (35-40 Gpa). The preparation method provided by the invention is suitable for large-scale industrial production, does not pollute the environment and is environmentally friendly.

Description

technical field [0001] The invention belongs to a titanium alloy powder material and a preparation method, in particular to a high-strength and low-modulus medical titanium alloy powder material for 3D printing and a preparation method for electrode induction melting gas atomization, that is, crucible-free melting. Background technique [0002] Biomedical titanium alloys have the characteristics of small specific gravity, high specific strength, low modulus, corrosion resistance, easy machining and excellent biocompatibility, and are gradually replacing traditional biomedical metal materials such as stainless steel and cobalt-based alloys. New medical carrier materials for diagnosing, treating or replacing human tissues and organs or enhancing their functions have become the preferred materials for hard tissue replacement or repair medical device products such as artificial joints, bone trauma products, and artificial dental implants. The development of biomedical titanium m...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/02B22F9/08B33Y70/00
CPCB22F9/082B22F2009/0824B33Y70/00C22C1/02C22C14/00
Inventor 金霞冒爱琴刘平张腾辉龙郑易崔良丁洪波
Owner 浙江亚通新材料股份有限公司
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