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A kind of process method of laser direct forming titanium alloy parts

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

Active Publication Date: 2015-08-12
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of process method of laser direct forming titanium alloy parts
  • A kind of process method of laser direct forming titanium alloy parts
  • A kind of process method of laser direct forming titanium alloy parts

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example 1

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

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

[0030] A new laser scanning path is proposed, and at the same time, a control method for internal defects of laser forming parts is proposed. This method uses optimized scanning distance and changes the processing parameters between different layers of laser forming parts;

[0031] According to the new laser scanning path, the optimized scanning distance and the determined processing parameters of the different layers of the transformed laser forming parts, the entire proce...

example 2

[0050] The invention also carries out forming processing to the connectors and corner boxes commonly used in aerospace, and the forming parts such as Image 6 (b) and Image 6 (c) shown. These two kinds of parts adopt the filling type scanning mode that the present invention proposes, carry out forming processing, adopt relevant process parameter in table 2 process parameter, promptly this embodiment adopts process parameter to be: 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 structure of the formed part, the optimization of the scanning distance and the change of the processing parameters between different layers have been adopted to achieve better results. The other processing technologies are the same as 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 metal powder laser rapid forming technology, in particular to a process method for directly forming titanium alloy parts by laser. 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 combined with synchronous coaxial feeding laser cladding technology. It involves key technologies in the fields of machinery, laser, computer-aided design, computer-aided manufacturing, computer numerical control, and material science. It breaks through the limitations of traditional rapid prototyping techniques and forming materials, and is the most researched and most promising new manufacturing technology among many methods of rapid prototyping. [0003] Titanium alloy has become an indispensable structural material for military industry due to its low density, high specific strength, and excel...

Claims

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Application Information

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Patent Type & Authority Patents(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