A device for controlling interlayer temperature based on electron beam fuse additive manufacturing

A technology of additive manufacturing and electron beam, which is applied in the field of additive manufacturing, can solve problems such as the influence of electron beam fuse forming and the difficulty of temperature control between electron beam layers, and achieve good surface forming, time saving, and excellent mechanical properties.

Active Publication Date: 2021-06-29
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are few studies on the interlayer temperature control and post-processing devices and methods of the electron beam fuse additive system. The electron beam interlayer temperature control is difficult, and the temperature change has a great influence on the electron beam fuse forming.

Method used

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  • A device for controlling interlayer temperature based on electron beam fuse additive manufacturing
  • A device for controlling interlayer temperature based on electron beam fuse additive manufacturing

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Embodiment Construction

[0021] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] A device for controlling interlayer temperature based on electron beam fuse additive manufacturing, the device includes an electron gun, a wire feeding system, an electron gun vacuum chamber, a vacuum forming chamber, a working displacement platform, and a temperature control system. The electron gun includes an electron beam generator Filament 12, cathode 13 below the filament, grid 14 below the cathode, anode 15 below the grid, focusing coil 16 below the anode and deflection coil 17 below the focusing coil, the electron gun is placed in the electron gun vacuum chamber 18; The electron gun vacuum chamber 18 is placed on the top of the vacuum forming chamber 1, and is communicated with and isolated from the vacuum forming chamber through the...

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Abstract

The invention discloses a device for controlling interlayer temperature based on electron beam fuse additive manufacturing, which includes an electron gun, including filaments, cathodes, grids, anodes, focusing coils and deflection coils arranged in sequence in the vertical direction to generate electron beams, and the electron gun Placed in the vacuum chamber of the electron gun; the vacuum chamber of the electron gun is set on the top of the vacuum forming chamber, and is connected and isolated from the vacuum forming chamber through an electronic gas valve. Furnace and circulating cooling device, resistance wire that can realize temperature rise, thermocouple for conduction and temperature measurement, cover plate for forming a closed space and heating control device placed outside the vacuum chamber. The device of the present invention realizes good surface molding of parts and uniformity of microstructure; the device of the present invention does not need to wait for heat dissipation to realize temperature control during the process of additive manufacturing, which saves time and improves production efficiency.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a device for controlling interlayer temperature based on electron beam fuse additive manufacturing. Background technique [0002] Metal additive manufacturing technology is based on a three-dimensional digital model, using computer-aided technology to realize flat layer slicing and path planning, and using corresponding numerical control technology to realize the technology of metal powder or wire accumulation to obtain complete physical parts. This technology covers many technical fields and has a wide range of applications. It is known as an important symbol of digital manufacturing in the third industrial revolution. The relatively mature technology additive manufacturing technology includes laser selective melting technology (SLM), electron beam selective melting technology (EBSM), electron beam fuse deposition technology (EBFF) and laser stereoform...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/00
CPCB23K15/0026B23K15/0086
Inventor 周琦徐俊强郭顺李泽宇喻嘉熙王克鸿曹嘉铖李擎天黄俊彭勇薛鹏
Owner NANJING UNIV OF SCI & TECH
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