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A device for electromagnetic field-assisted laser additive manufacturing

An auxiliary laser and additive manufacturing technology, which is applied in the direction of additive manufacturing, additive processing, and process efficiency improvement, to achieve the effects of ensuring manufacturing quality, improving performance, and fine grains

Active Publication Date: 2017-07-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the failure to effectively solve the "internal quality" control problem in the additive manufacturing process, the breakthrough in the key technology of laser additive manufacturing for key bearing components has not been achieved.

Method used

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  • A device for electromagnetic field-assisted laser additive manufacturing
  • A device for electromagnetic field-assisted laser additive manufacturing
  • A device for electromagnetic field-assisted laser additive manufacturing

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0029] The powder mixing chamber 2 is connected to the positive pole of the DC power supply 6 , and the base 10 is connected to the negative pole of the DC power supply 6 . An electric field perpendicular to the substrate 10 is formed from top to bottom.

[0030] Input the laser additive manufacturing parameters into the controller, the controller 7 controls the raw magnetic rods 13 at different positions in the magnetic field generator 11 according to the laser additive manufacturing parameters, and the controller 7 constantly changes the direction of the current in the raw magnetic rods to generate the direction Changing high-frequency magnetic fields15. Taking the raw magnet bar a and the raw magnet bar b as an example, the controller 7 regulates the current in the raw magnet bar a and the raw magnet bar b to form an alternating magnetic field with a lower height, such as figure 1 As shown, the controller 7 regulates the current in the raw magnetic rod c and the raw magne...

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Abstract

The invention is a device for electromagnetic field-assisted laser additive manufacturing, which includes a laser head (1), which is composed of a base (10), an insulating heat dissipation layer (9), a magnetic field generating device (11), and a water cooling device (12). Manufacturing base, AC power supply (8), longitudinal magnetic field generator, DC power supply (6), controller (7); wherein, the manufacturing base is divided into 4 layers from top to bottom, the uppermost layer is the base, and the bottom of the base is The insulating heat dissipation layer is used to control the temperature of the substrate and prevent the substrate from communicating with the magnetic field generating device. The magnetic field generating device is located below the insulating heat dissipation layer (9); the magnetic field generating device is connected with the controller and is controlled by the controller, and the controller communicates with the AC The power supply is connected, and the AC power supply supplies power to the controller; a plurality of raw magnetic rods (13) are arranged in the magnetic field generating device, and a water cooling device (12) is arranged below the magnetic field generating device to keep the manufacturing substrate in an appropriate temperature range.

Description

technical field [0001] The invention relates to the field of laser additive manufacturing, in particular to a device for improving the internal quality of additive manufacturing by applying an external electromagnetic field, which can obtain good additive manufacturing quality by generating alternating magnetic fields and electrostatic fields in conjunction with laser additive manufacturing parameters. Background technique [0002] Modern industrial high-end equipment is rapidly developing in the direction of large-scale, high-parameter, high-reliability and long-life service under extremely harsh conditions. The manufacturing technology of high-performance and difficult-to-machine metal large-scale key components is recognized as the foundation and core of major high-end equipment manufacturing industries key technologies. Additive manufacturing technology is expected to provide a fast, flexible, low-cost, high-performance, and short-cycle technology for the manufacture of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B33Y30/00
CPCB22F3/003B22F2999/00B22F10/00B22F10/38B22F12/30B22F12/53B22F10/25B22F12/58B22F12/20B22F3/105B22F2202/05Y02P10/25
Inventor 孙桂芳卢轶倪中华
Owner SOUTHEAST UNIV
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