A kind of electromagnetic-assisted arc additive manufacturing forming device and method

A technology of additive manufacturing and electric arc, which is applied in the direction of electrode support device, device for supporting electrode clamp, manufacturing tools, etc. It can solve the difficulty of controlling edge shape and forming accuracy, serious heat accumulation of stacked parts, and difficult shape of cladding layer, etc. Problems, to achieve the effect of heat dissipation in the molten pool, grain refinement of the weld structure, and reduction of weld bead flow

Active Publication Date: 2021-05-18
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the forming process, as the number of cladding layers increases, the heat accumulation of the accumulated parts is serious, the heat dissipation conditions are poor, the overheating of the molten pool is difficult to solidify, and the shape of the cladding layer is difficult to control. Especially when the edge of the parts is piled up, due to the existence of the liquid molten pool, It makes it more difficult to control the edge shape and forming accuracy of parts

Method used

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  • A kind of electromagnetic-assisted arc additive manufacturing forming device and method

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Effect test

Embodiment 1

[0043] The manufacture of formed aluminum alloy inclined wall parts includes the following steps:

[0044] S1 Place the 5083 aluminum alloy plate substrate on the CNC machine tool work platform, use the clamping device to clamp the 5083 aluminum alloy substrate, adjust the welding process parameters, the discharge electrode of the arc welding torch 8 is perpendicular to the substrate 15, and keep a certain distance between them; adjust the electromagnetic The angle and distance between the coil and the part 12, the distance between the upper surface of the electromagnetic coil and the side of the part 12, set the electromagnetic frequency and magnetic field strength, and set the rolling pressure of the roll; the protective gas is 99.999% argon, and the protective gas flow rate is 25L / min;

[0045] S2 arc welding torch 8 melts the aluminum alloy wire to form a weld bead, and moves along the gap path to weld the gap to be welded on the 5083 aluminum alloy plate at a welding spe...

Embodiment 2

[0048] Manufacturing the inclined wall part of the formed stainless steel 316L inclined wall part comprises the following steps:

[0049] S1 Place the stainless steel 316L substrate on the CNC machine tool work platform, use the clamping device to clamp the stainless steel 316L substrate, adjust the welding process parameters, the discharge electrode of the arc welding torch 8 is perpendicular to the substrate 15, and keep a certain distance between them; adjust the electromagnetic coil and the parts The angle and distance of 12, the upper surface of the electromagnetic coil is a certain distance from the side of the part 12, the electromagnetic frequency and magnetic field strength are set, and the rolling pressure of the roll is set; the shielding gas is 5% CO2+95% argon, and the shielding gas flow rate is 20L / min.

[0050] S2 arc welding torch 8 melts the stainless steel wire to form a weld bead, moves along the gap path to weld the gap to be welded on the stainless steel 3...

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Abstract

The invention belongs to the field of metal additive manufacturing, and specifically discloses an electromagnetic-assisted arc additive manufacturing forming device and method, which includes a substrate, an arc welding torch, an electromagnetic coil, a line laser scanner, and a magnetic field measuring instrument. The arc welding torch and The electromagnetic coil is located above the substrate, the arc torch is used to weld and form the part to be formed on the substrate, and the electromagnetic coil is used to apply a magnetic field at the weld pool of the part to be formed; the line laser scanner is located on the Above the part to be formed, it is used to detect the surface topography of the weld bead; the magnetic field measuring instrument is located between the electromagnetic coil and the part to be formed, and is connected with the electromagnetic coil, for measuring and controlling the electromagnetic The strength of the magnetic field applied by the coil to the weld pool of the weld bead. The invention supports the molten pool of the weld bead through the electromagnetic induction force during arc additive manufacturing, prevents the flow of the weld bead, reduces the residual stress of the welded joint, and improves the mechanical properties of the formed parts.

Description

technical field [0001] The invention belongs to the field of metal additive manufacturing, and more specifically relates to an electromagnetic-assisted arc additive manufacturing forming device and method. Background technique [0002] Arc additive manufacturing technology is a layer-by-layer cladding principle, using arcs generated by melting inert gas welding (MIG), tungsten inert gas welding (TIG) and plasma welding power supply (PA). The heat source, through the addition of wire, under the control of the program, is an advanced digital manufacturing technology that gradually forms metal parts from line-surface-body according to the three-dimensional digital model. [0003] In recent years, arc additive manufacturing technology has been widely used in aviation, aerospace, automobile, machinery manufacturing, ship aluminum alloy and chemical industry. Arc additive manufacturing has the advantages of high deposition efficiency, high wire utilization rate, short overall man...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/095B23K9/16B23K9/28B23K9/32G01B11/24G01R33/02
CPCB23K9/095B23K9/16B23K9/287B23K9/32G01B11/24G01R33/02
Inventor 张海鸥陈尧赵旭山王桂兰
Owner HUAZHONG UNIV OF SCI & TECH
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