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Spherical TC4 titanium alloy powder used for laser 3D printing and preparation method thereof

A 3D printing, titanium alloy technology, applied in metal processing equipment, transportation and packaging, additive processing, etc., to achieve the effect of a wide range of application prospects

Active Publication Date: 2016-06-08
ANSHAN DONGDA LASER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, domestic research on the preparation technology of rotating electrode induction melting TC4 titanium alloy powder is different from foreign products in terms of powder particle size distribution, sphericity, hollow spherical rate, chemical composition, bulk density, fluidity, and oxygen content. There is still a large gap compared with

Method used

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  • Spherical TC4 titanium alloy powder used for laser 3D printing and preparation method thereof
  • Spherical TC4 titanium alloy powder used for laser 3D printing and preparation method thereof
  • Spherical TC4 titanium alloy powder used for laser 3D printing and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0067] The preparation method of the spherical TC4 titanium alloy powder for laser 3D printing specifically comprises the following steps:

[0068] Step 1, preprocessing:

[0069] (1) The raw material TC4 titanium alloy is made into a cylinder as an electrode titanium rod. The diameter of the cylinder is 50mm and the length is 1000mm; then one end of the electrode titanium rod is processed into a 40-degree conical tip with a surface roughness of Ra12.5 , at the other end of the electrode titanium rod, at a distance of 6mm from the top, process an annular slot with a width of 8mm and a depth of 4mm;

[0070] (2) Clean the electrode titanium rod and install it on the electrode control system of 10kg rotating electrode vacuum induction melting. The specific operation is as follows:

[0071] Use No. 1000-2000 metallographic sandpaper to remove oxides and impurities on the surface of the TC4 electrode titanium rod, clean the surface of the TC4 electrode titanium rod with petroleum...

Embodiment 2

[0105] The preparation method of the spherical TC4 titanium alloy powder for laser 3D printing specifically comprises the following steps:

[0106] Step 1, preprocessing:

[0107] (1) The raw material TC4 titanium alloy is made into a cylinder as an electrode titanium rod. The diameter of the cylinder is 50mm and the length is 1000mm; then one end of the electrode titanium rod is processed into a 45-degree conical tip with a surface roughness of Ra15. At the other end of the titanium rod, at a distance of 6mm from the top, process an annular slot with a width of 8mm and a depth of 4mm;

[0108] (2) Clean the electrode titanium rod and install it on the electrode control system of 10kg rotating electrode vacuum induction melting. The specific operation is as follows:

[0109] Use 1000-2000 No. metallographic sandpaper to remove oxides and impurities on the surface of the TC4 electrode titanium rod, clean the surface of the TC4 electrode titanium rod with petroleum ether and al...

Embodiment 3

[0145] The preparation method of the spherical TC4 titanium alloy powder for laser 3D printing specifically comprises the following steps:

[0146] Step 1, preprocessing:

[0147] (1) The raw material TC4 titanium alloy is made into a cylinder as an electrode titanium rod. The diameter of the cylinder is 50mm and the length is 1000mm; then one end of the electrode titanium rod is processed into a 50-degree conical tip with a surface roughness of Ra12.5 , at the other end of the electrode titanium rod, at a distance of 6mm from the top, process an annular slot with a width of 8mm and a depth of 4mm;

[0148] (2) Clean the electrode titanium rod and install it on the electrode control system of 10kg rotating electrode vacuum induction melting. The specific operation is as follows:

[0149] Use 1000-2000 No. metallographic sandpaper to remove oxides and impurities on the surface of the TC4 electrode titanium rod, clean the surface of the TC4 electrode titanium rod with petroleum...

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Abstract

The invention discloses spherical TC4 titanium alloy powder used for laser 3D printing and a preparation method thereof. Titanium alloy powder particles are in a sphere shape, the grain size is 1-180 [mu]m, the oxygen content is 0.09%-0.14%, the apparent density is 2.587-2.656 g / cm<3>, and the liquidity of the powder with the grain size being 54-150 [mu]m is 20.0-30.0 s / 50g. The powder with the grain size being 1-54 [mu]m can be used for powder laying method laser 3D printing, and the powder with the grain size being 54-150 [mu]m can be used for powder feeding laser 3D printing. According to the preparation method, an electrode titanium bar of which one end is a conical tip is made from titanium alloy and is placed in a induction melting chamber to rotate, induction melting is started at the same time, and when liquid drops are formed by the tip, the titanium bar rotates and perpendicularly moves downwards; the alloy liquid drops are atomized into the powder in an atomizing chamber through inert gases by regulating and controlling the atomizing air pressure and induction parameters; and then collection is conducted through a powder collection device, and the powder with different grain sizes is screened and preserved in a vacuum mode.

Description

technical field [0001] The invention belongs to the technical field of preparation of highly active metal powder for laser 3D printing, and in particular relates to a spherical TC4 titanium alloy powder for laser 3D printing and a preparation method thereof. technical background [0002] Laser 3D printing technology is an advanced technology that has gradually developed since the early 1980s. This technology can be used for the rapid prototyping of three-dimensional (3D) solid metal parts that bear strong mechanical loads, and can also be applied to the repair of parts with complex shapes and large volumes, manufacturing defects, misprocessing damage, or service damage. Therefore, it has been a frontier research topic at home and abroad since its appearance. So far, the domestic and foreign output value of laser 3D printing related industries has reached billions of dollars, especially with the rapid development of research on large-scale high-power laser devices, 3D digita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C14/00B22F9/10B33Y70/00
CPCC22C14/00B22F9/10B33Y70/00B22F1/065
Inventor 陈岁元刘常升董欢欢郭快快梁京蓝天张雯倩
Owner ANSHAN DONGDA LASER TECH CO LTD
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