Laser three-dimensional forming method of large-size titanium-aluminum-based alloy

A technology of laser three-dimensional forming and base alloy, which is applied in the field of laser three-dimensional forming of titanium-aluminum alloy and laser three-dimensional forming of titanium-aluminum-based alloy. And other issues

Active Publication Date: 2014-01-08
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problem that the above-mentioned laser-formed titanium-aluminum-based alloy is easy to crack, and provides a forming process for preventing cracks in the laser forming process, which solves the problem that it is difficult to carry out large-scale laser-formed titanium-aluminum-based alloy materials at present

Method used

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  • Laser three-dimensional forming method of large-size titanium-aluminum-based alloy
  • Laser three-dimensional forming method of large-size titanium-aluminum-based alloy
  • Laser three-dimensional forming method of large-size titanium-aluminum-based alloy

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Embodiment 1

[0035] Embodiment 1: In this embodiment, a titanium-aluminum alloy sample with a height of 60 mm in width, a height of 150 mm, and a wall thickness of 3.5 mm is manufactured. The specific manufacturing steps are as follows:

[0036] 1. Select a TC4 titanium alloy plate with a thickness of about 10mm, and fix it on the machine tool with fixtures;

[0037] 2. Turn on the laser, set the laser power parameter to 700W, high-purity CO 2 , high-purity He, high-purity N 2 The pressure is adjusted to about 0.5MPa, and the cooling water flow is about 20L / min;

[0038] 3. Put the titanium-aluminum alloy powder into the powder feeder;

[0039] 4. Use UG software to build a model and use the subdivision software that comes with the forming equipment to subdivide the 3D model. The subdivision height of each layer is set to 0.1mm, and the scanning speed of the powder feeding nozzle is set to 100m / h. Powder speed 5g / min;

[0040] 5. When cladding 10 layers, use the subdivision software t...

Embodiment 2

[0043] Embodiment 2: In this embodiment, a titanium-aluminum alloy sample with a height of 40 mm in width, a height of 50 mm, and a wall thickness of 10 mm is produced. The specific manufacturing steps are as follows:

[0044] 1. Select a TC4 titanium alloy plate with a thickness of about 10mm, and fix it on the machine tool with fixtures;

[0045] 2. Turn on the laser, set the laser power parameter to 1000W, high-purity CO 2 , high-purity He, high-purity N 2 The pressure is adjusted to about 0.5MPa, and the cooling water flow is about 20L / min;

[0046] 3. Put the titanium-aluminum alloy powder into the powder feeder;

[0047] 4. Use UG software to build a model and use the subdivision software that comes with the forming equipment to subdivide the 3D model. The subdivision height of each layer is set to 0.1mm, and the scanning speed of the powder feeding nozzle is set to 100m / h. Powder speed 5g / min;

[0048] 5. When cladding 10 layers, use the subdivision software that c...

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Abstract

The invention relates to a laser three-dimensional forming method of large-size titanium-aluminum-based alloy. According to the method, a three-dimensional model of the titanium-aluminum-based alloy is established first, subdivision is carried out, then a fusion covering control program is compiled; the scanning speed of a powder feeding nozzle is controlled to be 100-200m/h, powder feeding speed is set to be 5-8g/min, the subdivision height of each layer is 0.1-0.2mm, 5-10 layers cover a base plate in a fusion mode, a base fusion covering layer is formed; the scanning speed of the powder feeding nozzle is adjusted to be 200-300m/h, the powder feeding speed of a powder feeding system is adjusted to be 6-10g/min, the subdivision height of each layer is adjusted to be 0.4-0.6mm, and even and stable forming is carried out until the forming process is over. The method can solve the problem that cracks can be generated easily during a titanium-aluminum-based alloy fusion covering process, and large-size crack-less titanium-aluminum-based alloy materials can be manufactured.

Description

technical field [0001] The invention belongs to the technical field of special metal forming and processing, and relates to a laser three-dimensional forming method for a titanium-aluminum base alloy, in particular to a laser three-dimensional forming method for a titanium-aluminum alloy with a large size. Background technique [0002] Titanium-aluminum alloy has the advantages of low density, high elastic modulus, good high-temperature strength and good oxidation resistance. It is a high-temperature structural material with important development potential in aerospace, automotive and other fields. However, the plasticity of this alloy at room temperature is very poor, and it is very difficult to process and form, which limits the engineering application of this material. To this end, researchers are actively developing their near-net shape technologies, such as powder metallurgy, precision casting, directional solidification, and laser melting deposition. [0003] Laser cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105
Inventor 吴复尧刘黎明罗世敏许沂宋剑戴峰
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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