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Method for preparing titanium alloy parts by increasing and decreasing materials

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

Inactive Publication Date: 2018-09-14
GUANGDONG UNIV OF TECH
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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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  • Method for preparing titanium alloy parts by increasing and decreasing materials
  • Method for preparing titanium alloy parts by increasing and decreasing materials
  • Method for preparing titanium alloy parts by increasing and decreasing 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 increasing and decreasing materials. The method specifically comprises the steps that titanium hydride particles are prepared, specifically, titanium sponge is adopted as a raw material, the titanium sponge reacts with hydrogen to produce titanium hydride, and after the reaction is completed, the produced titanium hydride is crushed; spheroidized titanium particles are prepared, specifically, the crushed titanium hydride particles are subjected to radiofrequency plasma spheroidizing treatment; material increasing and decreasing processing is conducted, specifically, a three-dimensional CAD model is generated according to the parts and imported into a software program of a material increasing and decreasing mixed processing system; software generates a plurality of deposition layers and deposition modules, and the deposition path and deposition parameter of each deposition module are set; and detecting is conducted in real time, the material is subjected to material decreasing processing repair according to original data and real-time detected data. According to the method, high-precision spheroidized titanium alloy particle materials are combined with a material increasing and decreasing manufacturing technology, and the method can be widely applied 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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IPC IPC(8): B22F9/30B22F1/00B22F3/105B33Y10/00B33Y70/00
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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