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Tungsten-wire electric-arc additive manufacturing device and method under action of auxiliary wire

A technology of additive manufacturing and electric arc, which is applied in the direction of manufacturing tools, additive processing, arc welding equipment, etc., can solve the problems of low accumulation efficiency and excessive damage of accumulation layers, and achieve the effect of improving accumulation efficiency

Active Publication Date: 2019-07-23
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the technical problem of excessive damage to the accumulation layer and low accumulation efficiency in the traditional arc additive manufacturing process, and provide an auxiliary wire function on the basis of arc additive manufacturing Lower tungsten-wire arc additive manufacturing device and method

Method used

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  • Tungsten-wire electric-arc additive manufacturing device and method under action of auxiliary wire
  • Tungsten-wire electric-arc additive manufacturing device and method under action of auxiliary wire
  • Tungsten-wire electric-arc additive manufacturing device and method under action of auxiliary wire

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Effect test

Embodiment 1

[0033] A method for additive manufacturing of a tungsten-wire arc additive manufacturing device under the action of auxiliary wires, comprising the following steps:

[0034] Step 1: Plan the stacking path and process parameters according to the geometric structure of the metal component to be processed, and select the wire material required for the test. The process parameters include stacking current I, welding speed v, shielding gas flow L, and feeding of the first wire 5a. wire speed v 1 , The wire feeding speed v of the second wire 5b 2 ; The accumulation current I is 100-250A, and the protective gas flow L is 10-30L / min.

[0035] Step 2: Mechanically clean the surface of the substrate 10, wipe it clean with acetone, and fix the substrate 10 on the workbench through a clamp; connect the welding torch 2 to the negative pole of the arc additive manufacturing power supply 1 through a cable; the second guide wire One end of the nozzle 6b is connected to the positive pole of ...

Embodiment 2

[0041] A method for additive manufacturing using a tungsten-wire arc additive manufacturing device under the action of auxiliary wires, comprising the following steps:

[0042] Step 1: Plan the stacking path and process parameters according to the geometric structure of the metal component to be processed, and select the wire material required for the test. The process parameters include stacking current I, welding speed v, shielding gas flow L, and feeding of the first wire 5a. wire speed v 1 , The wire feeding speed v of the second wire 5b 2 ; The accumulation current I is 100-250A, and the protective gas flow L is 10-30L / min.

[0043] The stainless steel member described in this embodiment is a multi-layer single-channel thin-walled part, with a member width of 6 mm, a total height of 25 mm, and a forming path length of 160 mm. In this test, the Fronius welding machine provides the arc additive manufacturing power supply, the motion execution device is an ABB robot, and t...

Embodiment 3

[0051] The present invention also provides a tungsten-wire arc additive manufacturing device under the action of auxiliary wire, including an arc additive manufacturing power supply 1, a welding torch 2, a shielding gas cylinder 3, a first wire feeder 4a, a second wire feeder 4b, a second A metal wire 5a, a second metal wire 5b, a first wire guide 6a, and a second wire guide 6b;

[0052]The torch 2 is connected to the negative pole of the arc additive manufacturing power supply 1 through a cable; one end of the second wire guide 6b is connected to the positive pole of the arc additive manufacturing power supply 1 through a cable; one end of the first metal wire 5a is passed through Through the first wire guide nozzle 6a, one end of the second metal wire 5b passes through the second wire guide nozzle 6b; the shielding gas bottle 3 is connected with the welding torch 2 through a gas supply hose for providing shielding gas; The wire machine 4a and the second wire feeder 4b are us...

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Abstract

The invention provides a tungsten-wire electric-arc additive manufacturing device and method under action of an auxiliary wire. A wire feeding machine in the device is used for conveying a metal wire,the other end of the metal wire is connected to a wire guide nozzle; a second wire guide nozzle and a welding gun are separately connected to a positive electrode and a negative electrode of an electric-arc additive manufacturing power supply; electric arcs are generated between a main wire and the welding gun; the main wire is used for a great number of fuse wires to manufacture a base part of aformed part; and the auxiliary wire is positioned between the main wire and the welding gun for consuming electric-arc heat, so that deposition efficiency in an additive manufacturing process is improved or an intermetallic compound component and a functional gradient material are prepared. According to the method provided by the invention, process parameters are regulated to determine positionsof different kinds of equipment, so that a stable electric-arc form is obtained, forming quality of a stacked layer is ensured by regulating an auxiliary wire feeding time, and continuous component regulation can be realized in case of not replacing the metal wire. The tungsten-wire electric-arc additive manufacturing device effectively solves the technical problem that the stacked layer in a conventional electric-arc additive manufacturing process is excessively damaged, and stacking efficiency is not high.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing of metal components, and in particular relates to a tungsten-wire arc additive manufacturing device and method under the action of auxiliary wires. Background technique [0002] Arc additive manufacturing is a technology that uses welding arc as heat source and metal wire as filling material to accumulate layer by layer to obtain three-dimensional solid parts. This technology has high material utilization rate, high production efficiency, and low equipment cost. advantage. [0003] At present, arc additive manufacturing technologies mainly include gas metal arc additive manufacturing (GMA-AM), tungsten inert gas arc additive manufacturing (GTA-AM) and plasma arc additive manufacturing. Additive Manufacturing (Plasma Arc Additive Manufacturing, PA-AM). In the traditional arc additive manufacturing process, the arc is established between the electrode and the metal component. The ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/235B23K9/167B33Y10/00B33Y30/00
CPCB23K9/04B23K9/167B23K9/235B33Y10/00B33Y30/00
Inventor 熊俊刘广超施孟含陈辉
Owner SOUTHWEST JIAOTONG UNIV
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