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Tantalum or niobium or tantalum and niobium alloy additive manufacturing method

Active Publication Date: 2016-08-17
湖南华翔医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process of their metal and its alloy products is complicated, the process is long, difficult, and the material yield is low.

Method used

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  • Tantalum or niobium or tantalum and niobium alloy additive manufacturing method
  • Tantalum or niobium or tantalum and niobium alloy additive manufacturing method
  • Tantalum or niobium or tantalum and niobium alloy additive manufacturing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The additive manufacturing method of dense tantalum of the present invention comprises the following steps:

[0037] (1) Prepare tantalum powder for 3D printing, the specific steps are as follows:

[0038] (a) Prepare the tantalum plate scraps, wash off the oil, soak in HF to remove the surface oxide film; then put it in a hydrogenation furnace and heat it up to 1000 ° C for 1 hour of vacuum treatment, then turn off the power and cool to 600 ° C, hydrogenate with hydrogen, and finally cool to room temperature Time to release.

[0039] (b) Use a 200-mesh sieve mill to sieve the hydrogenated tantalum material. The sieving and ball milling of the sieve mill are carried out at the same time. Every time the sieve mill rotates, the material is ball milled and sieved once. As long as the material particles reach The particle size corresponding to the 200-mesh sieve hole, the coarse particles whose particle size does not meet the requirements, will be returned to the ball mill...

Embodiment 2

[0045] The manufacturing method of this embodiment is exactly the same as that of Embodiment 1, the difference is that the blueprint of the design drawing is different, and it is printed according to the graphic converted from the bone scan intercepted by the doctor.

[0046] The product prepared in this embodiment is an internal grid tantalum bone, such as figure 2 As shown, the overall size is 157.2*29.51*20.7mm, and the bulk density is 2.64g / cm 3 , the porosity is 84.1%.

Embodiment 3

[0048] The present embodiment is the manufacturing method of grid niobium, comprises the following steps:

[0049] (1) Preparation of niobium powder for 3D printing, the specific steps are as follows:

[0050] (a) The niobium hydride obtained by the carbon reduction method is sieved and ground with a 200-mesh sieve mill, and the sieving and ball milling of the sieve mill are carried out simultaneously. Every time the sieve mill cylinder rotates around, the material is ball milled once and sieved once. As long as the particles reach the particle size corresponding to the 200-mesh sieve hole, if the particle size does not meet the required coarse particles, they will be returned to the ball mill again; the niobium hydride powder sieved by the 200-mesh sieve mill is placed in a 325-mesh vibrating sieve to obtain the particle size Niobium hydride powder larger than 325 mesh but smaller than 200 mesh. The peak particle size distribution of this kind of niobium hydride powder is ar...

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Abstract

The invention provides a tantalum or niobium or tantalum and niobium alloy additive manufacturing method. The method comprises the following steps that firstly, tantalum powder or niobium powder or tantalum and niobium alloy powder is prepared for 3D printing; and secondly, the prepared tantalum powder or the prepared niobium powder or the prepared tantalum and niobium alloy powder for 3D printing is put into a 3D printer for printing, and then a tantalum or niobium or tantalum and niobium alloy metal product is prepared. By means of the manufacturing method, the cost of raw materials is low, the technological process is simple, the manufactured powder with good fluidity can be directly printed into metal products and artificial material implants according to design drawings or figures converted by scanning bones amputated by doctors, the production process is quick, and post-treatment workload is little.

Description

technical field [0001] The invention relates to the field of 3D manufacturing, in particular to a niobium or tantalum or an alloy additive manufacturing method thereof. Background technique [0002] Niobium and tantalum are rare metals with high melting points, their melting points are 2468°C and 2970°C respectively, and powders cannot be prepared by spraying; niobium and tantalum are metals with excellent ductility, and cannot be directly made into powders by mechanical crushing ; Tantalum powder can be prepared by compound reduction method, but its oxygen content will be high. Both niobium and tantalum have good corrosion resistance, high temperature resistance, and good electrical properties, and are widely used in high-end technical fields such as aerospace, electronic semiconductors, nuclear power, and medical human implants. However, the production process of their metal and its alloy products is complex, long and difficult, and the material yield is low. Therefore, ...

Claims

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Application Information

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IPC IPC(8): B22F9/30B22F3/10B33Y70/00B33Y10/00
CPCB22F3/10B22F9/30B33Y10/00B33Y70/00
Inventor 唐建中
Owner 湖南华翔医疗科技有限公司
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