A process method for laser selective melting and forming of equal wall thickness and variable diameter fuel spray rod
A technology of laser selective melting and process method, which is applied in the field of additive manufacturing, can solve the problems of large welding deformation of fuel spray rods, long repair period of heat shield, and large residual stress of assembly, etc., to solve the problem of long repair period and internal organization control Good, overall performance-boosting effect
Active Publication Date: 2022-07-05
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
[0004] In order to solve the technical problems existing in the prior art such as large welding deformation of the fuel spray rod, long heat shield repair cycle, large assembly residual stress and repeated correction, the present invention provides a fuel spray rod with equal wall thickness and variable diameter formed by laser selective melting The advanced process method greatly reduces the processing steps of fuel injection rods with equal wall thickness and variable diameter, shortens the turnaround time, and saves the manufacturing cycle and cost without the need for tools and fixtures
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[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.
[0048] In order to solve the problems existing in the existing technology, such as Figure 1 to Figure 10 As shown, the present invention provides a process method for laser selective melting and forming of equal-wall thickness variable-diameter fuel spray rods. The process method of laser selective melting and forming of equal wall thickness variable diameter fuel spray rod includes the following steps:
[0049] S1. Establish a three-dimensional model of the fuel injector with equal wall thickness and variable diameter, and use UG to establish a three-dimensional model of the fuel injector with equal wall thickness and variable diameter, such ...
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Abstract
The invention relates to a process method for laser selective melting and forming of a fuel spray rod with equal wall thickness and variable diameter, belonging to the technical field of additive manufacturing. The process method for forming a fuel spray rod with variable diameter of equal wall thickness by laser selective melting includes the following steps: S1, establishing a three-dimensional model of the fuel spray rod with variable diameter of equal wall thickness; S2, determining the forming direction of the fuel spray rod with variable diameter of equal wall thickness ; S3, add support; S4, set the process parameters of laser selective melting and forming; S5, equal wall thickness variable diameter fuel spray rod laser selective melting forming; S6, post-processing. The process method of laser selective melting and forming of the fuel spray rod with equal wall thickness and variable diameter realizes that the processing procedures of the fuel spray rod with equal wall thickness and variable diameter are greatly reduced, the turnaround time is greatly shortened, and tools and fixtures are not required, which saves the manufacturing cycle and cost. It solves the technical problems of large welding deformation of fuel spray rod, long repair cycle of heat shield, large residual stress of assembly and repeated calibration.
Description
technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a process method for laser selective melting and forming of a fuel spray rod with variable diameter of wall thickness. Background technique [0002] The laser selective melting forming technology has the characteristics of high forming accuracy and good dimensional conformity, and is especially suitable for the development and small batch trial production of small and medium-sized complex structural parts. In recent years, with the continuous improvement of laser selective melting forming process, equipment stability and quality reliability, it has gradually entered the product verification stage. At present, laser selective melting technology has become a popular new technology to deal with technical bottlenecks in the aerospace field. It has been used in many aerospace fields, and its performance is stable and reliable. [0003] Aero-engine fuel spray rods are l...
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IPC IPC(8): B22F3/105B22F3/24B22F5/10B33Y10/00B33Y40/20
CPCB22F3/24B22F5/10B33Y10/00B33Y40/20B22F2003/247B22F2003/248Y02P10/25
Inventor 薛丽媛周冠男董文启宋文清任慧娇
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION