Device and method for gradient materials additive manufacturing by using two-wire twin-electrode tungsten inert gas arc

A technology of additive manufacturing and argon tungsten arc, which is applied in the field of additive manufacturing devices and devices for additive manufacturing of double-wire double tungsten argon arc of gradient materials, and can solve the inconsistency between the composition distribution of gradient material forming parts and the design goal , Reduce the solidification speed of the molten pool, and the performance cannot be guaranteed, etc., to achieve the effect of improving the deposition efficiency, increasing the temperature of the molten pool, and avoiding unstable flow

Inactive Publication Date: 2018-11-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention solves the problem of low deposition efficiency of single tungsten argon arc additive manufacturing in the prior art, and the molten pool does not have enough time and power to fully mix the filled dissimilar metal wires, and the cladding path after solidification and forming is often With the composition segregation, the composition distribution of the obtained gradient material formed parts is inconsistent with the design goal, the performance cannot be guaranteed, and ...

Method used

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  • Device and method for gradient materials additive manufacturing by using two-wire twin-electrode tungsten inert gas arc
  • Device and method for gradient materials additive manufacturing by using two-wire twin-electrode tungsten inert gas arc
  • Device and method for gradient materials additive manufacturing by using two-wire twin-electrode tungsten inert gas arc

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specific Embodiment approach 1

[0033] Specific embodiment one: see figure 1 This embodiment will be described. The device for dual-wire dual tungsten argon arc additive manufacturing described in this embodiment includes a tungsten argon arc additive manufacturing power source 1a, a tungsten argon arc additive manufacturing power source 2 1b, and a dual tungsten argon arc additive manufacturing device. Manufacturing gun 2, partial tungsten pole 1 3a, partial tungsten pole 2 3b, wire guide nozzle 1 4a, wire guide nozzle 2 4b, wire feeder 1 5a, wire feeder 2 5b, wire feeding hose 1 6a and wire feeding soft Tube two 6b;

[0034] Under the dual tungsten argon arc additive manufacturing gun 2, there are installed a partial tungsten pole one 3a and a partial tungsten pole two 3b that are insulated from each other, and the partial tungsten pole one 3a and the two partial tungsten pole 3b are arranged opposite to each other through cables. The tungsten argon arc additive manufacturing power supply 1a is connected to ...

specific Embodiment approach 2

[0065] Specific implementation manner 2: see figure 1 This embodiment will be described. The dual-wire dual-tungsten argon arc additive manufacturing device is fixedly installed on a three-degree-of-freedom machine tool. Both the tungsten argon arc additive manufacturing power source 1a and the tungsten argon arc additive manufacturing power source 2 1b use Ryzen WS- 400 welding machine, DC positive connection; double tungsten argon arc additive manufacturing gun 2 is installed with partial tungsten pole one 3a and partial tungsten pole two 3b, the tip angle of the partial tungsten pole one 3a and the partial tungsten pole two 3b is 30°, the tip It is placed close to parallel, in a "V" shape, and the tungsten electrode spacing is 1.5mm.

[0066] The dual tungsten argon arc additive manufacturing gun 2 is vertically arranged above the molten pool 7, and the generated coupling arc is located between the molten pool 7 and two tungsten electrodes, and the distance between the tip of ...

specific Embodiment approach 3

[0082] Specific implementation manner three: see figure 1 This embodiment will be described. The dual-wire dual-tungsten argon arc additive manufacturing device is fixedly installed on a three-degree-of-freedom machine tool. Both the tungsten argon arc additive manufacturing power source 1a and the tungsten argon arc additive manufacturing power source 2 1b are based on Ryzen WS- 400 welding machine; double tungsten argon arc additive manufacturing gun 2 is installed with partial tungsten pole one 3a and partial tungsten pole two 3b, the tip angle of the tungsten pole one 3a and the two pole tungsten pole 3b is 60°, and the tips are placed close to parallel, It has a "V" shape, and the distance between the tungsten electrodes is 2mm.

[0083] The dual tungsten argon arc additive manufacturing gun 2 is vertically arranged above the molten pool 7, and the generated coupling arc is located between the molten pool 7 and the two tungsten electrodes, and the distance between the tip of...

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Abstract

The invention provides a device and method for gradient materials additive manufacturing by using two-wire twin-electrode tungsten inert gas arc. A first partial tungsten electrode and a second partial tungsten electrode are installed below a two-tungsten-electrode argon arc additional material manufacturing gun of the device, and are vertically arranged above a base plate. A first wire guide nozzle and a second wire guide nozzle are arranged in front of the two-tungsten-electrode argon arc additional material manufacturing gun. In the deposition process, two metal wires of dissimilar compositions are conveyed to a melting bath at the same time, the composition and performance of a deposition bead are controlled by adjusting the feeding proportion of the metal wires, and thus manufacturingof the gradient material arc additional material is achieved. It is ensured that excellent forming can still be achieved in the deposition process with large current and high wire feeding speed, thecomposition of the prepared gradient material formed part can be continuously transited from the composition of one metal wire to the composition of the other metal wire without replacement of the welding wires, and the deposition efficiency is up to 330 cm<3>/h; and in addition, the deposition bead is more uniform in composition, and the relative error between the components of the deposition bead and target set compositions is smaller than 10%.

Description

Technical field [0001] The invention relates to a device and method for additive manufacturing, in particular to a device and method for additive manufacturing of gradient material double-wire dual tungsten argon arc, and belongs to the field of arc additive manufacturing of gradient material. Background technique [0002] Arc additive manufacturing is a metal material additive manufacturing process. The process uses welding arc as a heat source, fills metal wires and deposits layer by layer, and has the advantages of low cost and high efficiency. The current arc additive manufacturing methods mainly include gas metal arc (GMA) additive manufacturing, gas tungsten arc (GTA) additive manufacturing, and so on. With the development of science and technology, conventional homogeneous materials have been unable to meet the requirements of various industries for the comprehensive performance of parts. The arc additive manufacturing of gradient materials has become a current research ho...

Claims

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Application Information

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IPC IPC(8): B23K9/04B23K9/133B23K9/167B33Y10/00B33Y30/00
CPCB23K9/04B23K9/133B23K9/1675B33Y10/00B33Y30/00
Inventor 张广军韩庆璘
Owner HARBIN INST OF TECH
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