Laser direct forming process for titanium alloy part

A technology of laser direct forming and process method, applied in the direction of improving process efficiency, improving energy efficiency, etc., can solve problems such as deformation, cracking, poor internal quality, etc., and achieve the effect of reducing manufacturing cost, shortening manufacturing cycle, and high forming efficiency

Active Publication Date: 2013-09-18
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned titanium alloy laser rapid prototyping manufacturing process, problems such as poor internal quality, deformation and cracking often occur, the purpose of the present invention is to provide a laser direct forming with good forming quality, material utilization rate, shortened manufacturing cycle and reduced related manufacturing costs Titanium alloy parts process method

Method used

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  • Laser direct forming process for titanium alloy part
  • Laser direct forming process for titanium alloy part
  • Laser direct forming process for titanium alloy part

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example 1

[0028] Such as image 3 Shown is the process flow chart of the laser direct forming titanium alloy parts of the present invention. The present invention is a process method for laser directly forming titanium alloy parts, including the process steps:

[0029] Determine the basic process parameters of titanium alloy parts, and determine the range of forming process parameters of spherical titanium powder through basic process experiments using spherical titanium powder forming materials;

[0030] A new laser scanning path is proposed, and an internal defect control method for laser formed parts is also proposed. This method uses optimized scanning spacing to change the processing parameters between different layers of laser formed parts;

[0031] According to the new laser scanning path, optimized scanning distance and determined transformation of the processing parameters between different layers of laser forming parts, the entire processing process of titanium alloy parts is numeric...

example 2

[0050] The present invention also performs forming processing on connecting parts and corner boxes commonly used in aerospace, forming parts such as Image 6 (b) and Image 6 (c) Shown. These two parts adopt the filling scanning method proposed in the present invention for forming processing. The relevant process parameters adopted are in the process parameters in Table 2. That is, the process parameters used in this embodiment are: laser power 2000-2100W, scanning speed 3-5mm / s, powder feeding rate 0.5~0.9g / min, scanning distance 1.1~1.5mm, layer thickness 0.6~0.8mm. In order to improve the internal organization of the formed parts, the optimized scanning distance and the change of the processing parameters between different layers have been adopted to achieve better results. The other processing techniques are the same as the above.

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Abstract

The invention discloses a laser direct forming process for a titanium alloy part, and relates to a laser rapid forming technology for metal powder. The process mainly comprises the following steps of determining basic process parameters of the titanium alloy part, and disclosing a new laser scanning path and a method for controlling an internal defect of a laser formed part, i.e. firstly determining a process parameter range of spherical TA15 powder by a basic process experiment, and transforming processing process parameters of different layers of the laser formed part to form the titanium alloy part by adopting the laser scanning path and the related internal defect control method, namely by adopting an optimal scanning interval. The part formed by the process has the advantages of high forming efficiency, low cost, high internal quality, high automation degree, easiness in operation and the like. The process can be used for directly forming the titanium alloy part at an industrial application level, and a novel way for the production of a titanium alloy structural part is provided.

Description

Technical field [0001] The invention relates to a metal powder laser rapid forming technology, in particular to a process method for laser directly forming titanium alloy parts. Background technique [0002] Laser metal direct rapid prototyping technology is an advanced manufacturing technology developed on the basis of rapid prototyping technology that appeared in the late 1980s and combined with synchronous coaxial feeding laser cladding technology. It involves key technologies in the fields of machinery, lasers, computer-aided design, computer-aided manufacturing, computer digital control, and materials science. It breaks through the limitations of traditional rapid prototyping process methods and forming materials, and is currently the most studied and most promising new manufacturing technology among many rapid prototyping methods. [0003] Titanium alloy has become an indispensable structural material in the military industry due to its low density, high specific strength, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105
CPCY02P10/25
Inventor 刘伟军赵宇辉王福雨来佑彬孔源
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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