A laser additive manufacturing method for multi-support surface configuration of cavity thin-walled structural parts

A technology of thin-walled structural parts and laser additive materials, which is applied in the direction of additive manufacturing, additive processing, and improvement of process efficiency, and can solve problems such as complex processes, long manufacturing cycles, and inability to prepare

Active Publication Date: 2019-02-26
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of large cavity structural parts often cannot be prepared by conventional casting and welding processes, and there are defects such as long manufacturing cycle and complicated process.

Method used

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  • A laser additive manufacturing method for multi-support surface configuration of cavity thin-walled structural parts
  • A laser additive manufacturing method for multi-support surface configuration of cavity thin-walled structural parts
  • A laser additive manufacturing method for multi-support surface configuration of cavity thin-walled structural parts

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Experimental program
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Embodiment 1

[0037] In this embodiment, the K465 nickel-based alloy multi-cavity aviation complex thin-walled structural part is used as the manufacturing object, and the laser additive manufacturing method with multi-support surface configuration is used to realize the manufacture of the part. Partial structure such as figure 1 As shown in the analysis of the three-dimensional structure of the part, there are multiple cavities and flow channel structures inside the part to be formed. In addition, the part is a thin-walled structure. The realization of the cavity structure and the control of the deformation of the thin-walled structure during the forming process are the key points of the forming process. difficulty. In order to limit the deformation of parts to the greatest extent and ensure the feasibility of adding support structures, the direction with the largest projected area is selected as the stacking direction of additive manufacturing, such as figure 1 Select the Z direction as ...

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Abstract

The invention discloses a laser additive manufacturing method for a multi-support surface configuration facing a cavity thin-walled structural member, and belongs to the technical field of laser additive manufacturing. The method is to use laser additive manufacturing technology to form superalloy cavity thin-walled structural parts, and select the direction with the largest orthographic projection area of ​​the structural parts as the stacking direction of additive manufacturing; After the lower part of the cavity is formed, a support structure of the same material is welded to the corresponding position of the formed part, and then the support structure is used as a support to continue additive manufacturing on the outer surface of the support structure. until the entire structure is formed. The invention can realize stable and high-efficiency forming of large-scale cavity and thin-walled structure.

Description

technical field [0001] The invention relates to the technical field of laser additive manufacturing, in particular to a laser additive manufacturing method for a multi-support surface configuration facing a cavity thin-walled structural member. Background technique [0002] For the manufacture and design of aerospace-oriented structures, the performance of the final product and the quality of parts are important indicators to measure the rationality of the structure. At this stage, for the preparation of many aeronautical structural parts, it is required to use cavity structures as much as possible to achieve weight reduction on the basis of ensuring the performance of the parts. However, conventional casting and welding processes are often unable to prepare large cavity structural parts, and there are defects such as long manufacturing cycle and complicated process. [0003] Laser additive manufacturing technology accumulates and shapes materials layer by layer through com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F5/10B33Y10/00
CPCB22F5/10B33Y10/00B22F10/00B22F10/66B22F10/366B22F10/28B22F10/47Y02P10/25
Inventor 王志国赵吉宾赵宇辉李论施凡姚超
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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