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Device and method for additive manufacturing of gradient material twin-wire twin-tungsten argon 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: 2020-09-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 the deposition efficiency is low. A double-wire double-tungsten that realizes the additive manufacturing of high-current gradient materials above 500A is provided. An argon arc additive manufacturing device and method, to ensure good formation under the welding process of high current and high wire feeding speed, improve the efficiency of welding, reduce the solidification speed of the molten pool and intensify the flow of the molten pool, so that the molten The composition of the dressing is more uniform

Method used

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  • Device and method for additive manufacturing of gradient material twin-wire twin-tungsten argon arc
  • Device and method for additive manufacturing of gradient material twin-wire twin-tungsten argon arc
  • Device and method for additive manufacturing of gradient material twin-wire twin-tungsten argon arc

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specific Embodiment approach 1

[0033] Specific implementation mode one: see figure 1 This embodiment will be described. A twin-wire double argon tungsten arc additive manufacturing device described in this embodiment includes argon tungsten arc additive manufacturing power supply 1a, argon tungsten arc additive manufacturing power supply 2 1b, double argon tungsten arc additive manufacturing power supply Manufacturing gun 2, partial tungsten pole 1 3a, partial tungsten pole 2 3b, wire guide 1 4a, wire guide 2 4b, wire feeder 1 5a, wire feeder 2 5b, wire feed hose 1 6a and wire feed soft Tube 2 6b;

[0034]The first tungsten electrode 3a and the second tungsten electrode 3b which are insulated from each other are installed under the double tungsten argon arc additive manufacturing gun 2, and the first tungsten electrode 3a and the second tungsten electrode 3b are arranged opposite to each other and connected to each other through cables. The argon tungsten arc additive manufacturing power supply 1a is conn...

specific Embodiment approach 2

[0065] Specific implementation mode two: see figure 1 This embodiment will be described. The device for double-wire double argon tungsten arc additive manufacturing is fixedly installed on a three-degree-of-freedom machine tool. The argon tungsten arc additive manufacturing power supply 1a and the argon tungsten arc additive manufacturing power supply 2 1b both use Ryzen WS- 400 welding machine, DC positive connection; double tungsten argon arc additive manufacturing gun 2 is equipped with partial tungsten electrode 1 3a and partial tungsten electrode 2 3b, the tip angle of partial tungsten electrode 1 3a and partial tungsten electrode 2 3b is 30°, and the tip Place them close to parallel in a "V" shape, and the distance between tungsten electrodes is 1.5mm.

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

specific Embodiment approach 3

[0082] Specific implementation mode three: see figure 1 This embodiment will be described. The device for double-wire double argon tungsten arc additive manufacturing is fixedly installed on a three-degree-of-freedom machine tool. The argon tungsten arc additive manufacturing power supply 1a and the argon tungsten arc additive manufacturing power supply 2 1b both use Ryzen WS- 400 welding machine; double tungsten argon arc additive manufacturing gun 2 is equipped with partial tungsten electrode 1 3a and partial tungsten electrode 2 3b, the tip angle of partial tungsten electrode 1 3a and partial tungsten electrode 2 3b is 60°, and the tips are placed close to parallel, It is in the shape of "V", and the distance between partial tungsten poles is 2mm.

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

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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 materials with double-wire double tungsten argon arc, and belongs to the field of arc additive manufacturing of gradient materials. Background technique [0002] Arc additive manufacturing is a metal material additive manufacturing process. This process uses welding arc as the heat source, fills metal wires and deposits them layer by layer. It has the advantages of low cost and high efficiency. Current arc additive manufacturing methods mainly include gas metal arc (GMA) additive manufacturing, tungsten argon arc (Gas tungsten arc, GTA) additive manufacturing, and the like. With the development of science and technology, conventional homogeneous materials have been difficult to meet the requirements of various industries for the comprehensive performance of parts, and arc additive manufacturing of gradient...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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