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A method for preparing titanium alloy parts by adding and subtracting materials

A technology of adding and subtracting materials and titanium alloys, applied in additive processing, additive manufacturing, metal processing equipment, etc., can solve the problems of electrode pollution, equipment investment and production and operation costs, and achieve high spheroidization rate and good microstructure. , the effect of uniform distribution

Inactive Publication Date: 2021-11-05
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the gas atomization method, it is easy to be oxidized during the preparation process, and for the plasma rotating electrode method, there is a problem of electrode pollution, and the equipment investment and production and operation costs are very high

Method used

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  • A method for preparing titanium alloy parts by adding and subtracting materials
  • A method for preparing titanium alloy parts by adding and subtracting materials
  • A method for preparing titanium alloy parts by adding and subtracting materials

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0035] In the present embodiment, the method for preparing titanium alloy parts by adding and subtracting materials comprises the following steps:

[0036] Step 1. Preparation of titanium hydride particles: take commercially available titanium sponge with a particle size of 200 μm to 400 μm and place it in a reaction container, and continuously pass hydrogen gas into the container with a hydrogen flow rate of 1.5 to 3 L / s and keep the system pressure at normal pressure , slowly raise the temperature to 330-380°C, and heat for 20-40 minutes to generate loose titanium hydride; after the reaction is completed, the reaction product is crushed to obtain irregular multi-faceted granular titanium hydride.

[0037] Step 2. Preparation of spheroidized titanium particles: The titanium hydride particles obtained in step 1 are subjected to radio freq...

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Abstract

The invention discloses a method for preparing titanium alloy parts by adding and subtracting materials. The method specifically includes preparing titanium hydride particles: using sponge titanium as a raw material, making it react with hydrogen to form titanium hydride, and after the reaction is completed, the titanium hydride produced above is processed. Crushing treatment; preparation of spheroidized titanium particles: subjecting broken titanium hydride particles to radio frequency plasma spheroidization treatment; additive and subtractive material processing: generating a three-dimensional CAD model according to the part, and importing the CAD model into the software program of the additive and subtractive material hybrid processing system Middle; the software generates multiple deposition layers and deposition modules, and sets the deposition path and deposition parameters of each deposition module; and performs real-time detection, and performs subtractive processing and repair on materials according to the original data and real-time detected data. The invention combines the high-precision spheroidized titanium alloy particle material with the additive and subtractive material manufacturing technology, and can be widely used in industry.

Description

technical field [0001] The invention relates to the field of advanced titanium alloy manufacturing, in particular to a method for preparing titanium alloy parts by adding and subtracting materials. Background technique [0002] Titanium and titanium alloys are widely used in the fields of automobile, chemical industry, metallurgy, environmental protection, aviation, aerospace and weapons due to their excellent properties such as low density, high specific strength, good corrosion resistance, high heat resistance, non-magnetic, and good welding performance. Has a wide range of applications. At present, the more mature methods for preparing titanium alloys mainly include vacuum melting, precision casting and powder metallurgy. Both smelting method and precision casting have defects such as easy segregation of components, uneven structure, and introduction of inclusions. Similarly, traditional powder metallurgy can only produce parts with simple shapes. Additive manufacturin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/30B22F10/85B22F1/00B22F3/105B33Y10/00B33Y70/00
CPCB22F9/30B33Y10/00B33Y70/00B22F10/00B22F1/065B22F10/368B22F10/322B22F10/34B22F10/25B22F12/90B22F10/28Y02P10/25
Inventor 刘杰邓欣伍尚华吉红伟肖晓兰
Owner GUANGDONG UNIV OF TECH
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