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High-strength cobalt-tantalum-molybdenum alloy medical 3D-printing metal powder and preparation method thereof

A 3D printing, metal powder technology, used in additive processing and other directions

Inactive Publication Date: 2016-10-26
ANHUI CHUNGU 3D PRINTING INTELLIGENT EQUIP IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of medical materials, 3D printing metal powders also need to meet the requirements of excellent biocompatibility, mechanical properties and weldability, but the existing medical 3D printing metal powders are often difficult to meet the above requirements at the same time

Method used

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preparation example Construction

[0014] The invention provides a method for preparing high-strength cobalt-tantalum-molybdenum alloy medical 3D printing metal powder, the preparation method comprising:

[0015] 1) Smelting and slagging metal raw materials to obtain molten metal;

[0016] 2) ultrasonically atomizing and condensing the molten metal to obtain alloy particles;

[0017] 3) The alloy particles are subjected to isostatic pressing to obtain cobalt-tantalum-molybdenum alloy medical 3D printing metal powder;

[0018] Wherein, based on the total weight of the metal raw material, the metal raw material contains more than 27% by weight and less than 29% by weight of tantalum, 10-15% by weight of molybdenum, 0.06-0.5% by weight of carbon, 0.01-0.02% by weight of nickel, 0.5-4% by weight of iron, 1-2% by weight of silicon, 1.1-1.5% by weight of boron, 1.1-2% by weight of manganese and the balance of cobalt.

[0019] In the above preparation method, the specific conditions of smelting can be selected in a ...

Embodiment 1

[0031] 1) The metal raw materials are prepared according to the ratio and smelted at 1550°C and 0 MPa vacuum for 2.5 hours, and slagging at 1530°C for 15 minutes with a compound slag-removing agent to obtain a metal molten slurry;

[0032] 2) Ultrasonic atomization treatment is carried out on the molten metal (the pressure of the ultrasonic airflow is 1.5MPa, the pulse frequency is 90KHz, and the airflow velocity is not greater than 640m / s; the pressure of the gas medium is 5.5MPa; the impact force of the alloy solution and the ultrasonic airflow The ratio is 1:4; the gas medium and the ultrasonic gas flow are both argon), and the alloy particles are condensed according to the condensation speed of 104.5K / s;

[0033] 3) Screening the alloy particles so that the particle size of the alloy particles is 25 μm;

[0034] 4) The alloy particles were subjected to isostatic pressing at 300MPa for 12 hours to obtain cobalt-tantalum-molybdenum alloy medical 3D printing metal powder A1; ...

Embodiment 2

[0037] 1) Smelting metal raw materials at 1600°C and 0MPa vacuum for 2.3 hours, and slagging at 1550°C for 10 minutes with a compound slag-removing agent to obtain a metal molten slurry;

[0038] 2) Ultrasonic atomization treatment of the molten metal (the pressure of the ultrasonic airflow is 2MPa, the pulse frequency is 80KHz, the airflow velocity is not more than 640m / s; the pressure of the gas medium is 1.4MPa; the ratio of the impact force of the alloy solution to the ultrasonic airflow 1:3.5; both the gas medium and the ultrasonic gas flow are argon), and condense at a condensation rate of 104-105K / s to obtain alloy particles;

[0039] 3) Screening the alloy particles so that the particle size of the alloy particles is 15 μm;

[0040] 4) The alloy particles were subjected to isostatic pressing at 280MPa for 14 hours to obtain cobalt-tantalum-molybdenum alloy medical 3D printing metal powder A2;

[0041] Wherein, based on the total weight of the metal raw material, the met...

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Abstract

The invention discloses high-strength cobalt-tantalum-molybdenum alloy medical 3D-printing metal powder and a preparation method thereof. The preparation method comprises the steps that (1) metal raw materials are smelted and slagged to obtain molten metal; (2) the molten metal is subjected to ultrasonic atomizing treatment and condensation to obtain alloy particles; and (3) the alloy particles are subjected to isostatic pressing treatment to obtain the cobalt-tantalum-molybdenum alloy medical 3D-printing metal powder. The metal raw materials comprise, with the total weight of the metal raw materials as the benchmark, 27-29% of tantalum, 10-15% of molybdenum, 0.06-0.5% of carbon, 0.01-0.02% of nickel, 0.5-4% of iron, 1-2% of silicon, 1.1-1.5% of boron, 1.1-2% of manganese and the balance cobalt. The cobalt-tantalum-molybdenum alloy medical 3D-printing metal powder prepared through the method has excellent biocompatibility, mechanical performance and weldability.

Description

technical field [0001] The invention relates to a 3D printing metal powder, in particular to a high-strength cobalt-tantalum-molybdenum alloy medical 3D printing metal powder and a preparation method thereof. Background technique [0002] 3D printing metal powder is the most important link in the 3D printing industry chain of metal parts, and it is also the greatest value. At the "2013 World 3D Printing Technology Industry Conference", authoritative experts in the world's 3D printing industry gave a clear definition of 3D printing metal powder, which refers to the group of metal particles with a size less than 1mm, including single metal powder, alloy powder and metal powder. Certain refractory compound powders. [0003] At present, 3D printing metal powder materials include cobalt-chromium alloy, stainless steel, industrial steel, bronze alloy, titanium alloy and nickel-aluminum alloy, etc. However, in addition to good plasticity, 3D printing metal powder must also meet t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08C22C19/07C22C30/00C22C1/06B33Y70/00
CPCB22F9/082B33Y70/00C22C1/06C22C19/07C22C30/00
Inventor 黄仲佳王心生杨军王刚姚春吕晨
Owner ANHUI CHUNGU 3D PRINTING INTELLIGENT EQUIP IND TECH RES INST CO LTD
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