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Method for preparing titanium alloy spherical powder through recycled titanium materials

A spherical powder, titanium recovery technology, applied in the field of metal powder, can solve the problem of small application range, and achieve the effects of good fluidity, excellent wear resistance and high economic benefits

Pending Publication Date: 2019-12-13
江苏思睿迪快速制造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only suitable for recycling waste such as TC4. In addition, it needs to remove the non-compliant parts during the preparation process, making its application range smaller.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, adopt the following steps:

[0027] S1, the metal leftovers of TC4 are degreased, put into a pulverizer, and pulverized under the protection of an inert gas until the particle diameter is 5mm, and the metal grade is N4 at this time;

[0028] S2. Put the S1 product into a pre-vacuumized hydrogenation furnace, feed hydrogen, the hydrogen pressure is 0.5MPa, the hydrogen flow rate is 20mL / min, the hydrogen comes from the pre-hydrogenated titanium sponge, and four thermal cycles: heating to 820°C for 20min At this time, titanium undergoes a phase change, and the ability to absorb hydrogen is the strongest. Then lower the temperature to 450°C and keep it for 20 minutes. The cycle time is 1.5h;

[0029] S3, put the powder obtained in S2 into a dehydrogenation furnace for dehydrogenation, the dehydrogenation temperature is 650°C, and the vacuum pressure is 0.68pa;

[0030] S4. Put the powder obtained in S3 into the steel tank of the ball mill, add titanium allo...

Embodiment 2

[0033] Embodiment 2, adopt the following steps:

[0034] S1. The metal scraps of TC4, TC5, TC7 and TA15 are degreased, placed in a pulverizer, and pulverized under the protection of an inert gas until the particle diameter is 5mm, and the metal grade is N4 at this time;

[0035] S2. Put the S1 product into a pre-vacuumized hydrogenation furnace, feed hydrogen, the hydrogen pressure is 1.2MPa, the hydrogen flow rate is 30mL / min, the hydrogen comes from the pre-hydrogenated titanium sponge, and four thermal cycles: heating to 850°C for 20min At this time, titanium undergoes a phase change, and the ability to absorb hydrogen is the strongest. Then lower the temperature to 450°C and keep it for 20 minutes. The cycle time is 1.5h;

[0036] S3, put the powder obtained in S2 into a dehydrogenation furnace for dehydrogenation, the dehydrogenation temperature is 650°C, and the vacuum pressure is 0.68pa;

[0037] S4. Put the powder obtained in S3 into the steel tank of the ball mill, ...

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Abstract

The invention provides a method for preparing titanium alloy spherical powder through recycled titanium materials. According to the method, the recycled titanium materials are subjected to oil removal, vacuum oxygen removal, four cycles, hydrogenation, dehydrogenation and screening, and then plasma balling is adopted for preparing the titanium alloy spherical powder. A hydrogen source can come from the hydrogenated titanium sponge titanium purification dehydrogenation step, the resource is saved, and finally the high-effect high-performance titanium alloy spherical powder for additional material manufacturing is prepared. By means of the method, a new raw material channel is provided for additional material manufacturing, waste resources are changed into wealth from waste, and economic benefits are increased.

Description

technical field [0001] The invention belongs to the technical field of metal powder, and in particular relates to a method for preparing titanium alloy spherical powder by recycling titanium material. Background technique [0002] Titanium alloys are widely used in military industry, aerospace, environmental protection equipment, biomedical equipment and other fields because of their high specific strength, good corrosion resistance, and excellent biocompatibility. Titanium itself is a rare metal with poor thermal conductivity, high strength, lively chemical properties and easy chemical reactions. Cutting in normal temperature manufacturing will cause wear to the blade and the manufactured product is prone to cracking. In hot melt manufacturing, it is easy to introduce other impurities to produce side reactions, resulting in low yield and high cost. Therefore, in the process of manufacturing titanium materials, a large number of cracked defective products, defective product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/02B22F9/04B22F1/00B33Y70/00
CPCB22F9/023B22F9/04B33Y70/00B22F1/14
Inventor 张长松
Owner 江苏思睿迪快速制造科技有限公司
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