Multi-beam electron beam forming method

A molding method and electron beam technology, applied in the field of metal 3D printing, can solve the problems of unstable quality, low precision, high input power, etc., and achieve the effects of reduced machining allowance, high precision and high printing efficiency

Pending Publication Date: 2020-09-22
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a brand-new multi-beam electron beam forming method, which uses multiple electron be

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] like figure 1 As shown, a multi-beam electron beam forming method mainly includes the following main steps: S01 model correction, S02 slicing, S03 setting process parameters, S04 layer-by-layer printing, and S05 post-processing.

[0034] Step 1: S01 model correction. Use general software to correct the model according to the characteristics of the part model, calculate the machining allowance, and modify the local features to make the model suitable for multi-beam electron beam forming, which can reduce the machining allowance, improve the forming accuracy, and reduce deformation. produce.

[0035] Step 2: S02 slicing. The part model is divided into slices by general-purpose software, and a program that can be executed by multi-beam electron beam forming is generated. The slice thickness can be calculated according to the diameter of the wire, ...

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Abstract

The invention relates to a multi-beam electron beam forming method. The method adopts a 3D printer with multi-beam electron beams, and comprises the following steps of firstly, correcting a model, namely correcting the model through general software according to the characteristics of a part model, calculating machining allowance, and modifying local characteristics, so that the model is suitablefor multi-beam electron beam forming; carrying out slicing, specifically, slicing and dividing the part model through the general software, generating a program capable of being executed by multi-beamelectron beam forming, and finally generating a slicing file; setting process parameters, specifically, setting a wire feeding speed, electron beam power and a substrate moving speed according to thesize of a formed part; printing layer by layer to finally obtain the required part appearance; and carrying out post-processing, specifically, cutting the substrate and the part. According to the method, double electron beams are adopted as energy sources, heating metal wires are coaxially conveyed, the printing efficiency is high, the precision is high, and additive manufacturing of metal structural parts is achieved.

Description

technical field [0001] The invention relates to a metal 3D printing method, in particular to an electron beam forming method. Background technique [0002] Additive manufacturing, commonly known as 3D printing, is a combination of computer-aided design, material processing and forming technology, based on digital model files, through software and numerical control system, special metal materials, non-metal materials and medical biological materials, according to extrusion, Sintering, melting, light curing, spraying, etc. are accumulated layer by layer to create a manufacturing technology for physical objects. [0003] At present, the main metal 3D printing processes that can be used to directly manufacture metal functional parts include: Selective Laser Sintering (Selective Laser Sintering, SLS) technology, Direct Metal Laser Sintering (Direct Metal Laser Sintering, DMLS), Selective Laser Melting (Selective Laser Sintering) Melting, SLM) technology, Laser Engineered Net Sha...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F3/24B33Y10/00B33Y40/20
CPCB22F3/24B33Y10/00B33Y40/00B22F2003/248Y02P10/25
Inventor 曹志强
Owner UNIV OF SHANGHAI FOR SCI & TECH
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