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Apparatus and method for tungsten-wire arc additive manufacturing under the 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., and can solve the problems of low accumulation efficiency and excessive damage of accumulation layers

Active Publication Date: 2021-04-09
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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  • Apparatus and method for tungsten-wire arc additive manufacturing under the action of auxiliary wire
  • Apparatus and method for tungsten-wire arc additive manufacturing under the action of auxiliary wire

Examples

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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 arc additive manufacturing device and method under the action of auxiliary wires. In the device, a wire feeder is used to transport metal wires, and the other end of the metal wires is connected to a wire guide; a second wire guide and a welding torch They are respectively connected to the positive and negative poles of the arc additive manufacturing power supply, and an arc is generated between the main wire and the welding torch; the main wire is used for a large number of fuses to manufacture the base part of the formed part, and the auxiliary wire is located between the main wire and the welding torch. It is used to consume arc heat, improve the stacking efficiency of additive manufacturing process or prepare intermetallic compound components and functionally graded materials. The method of the invention determines the positions of different devices by adjusting the process parameters to obtain a stable arc shape, and the adjustment of the wire feeding time of the auxiliary wire ensures the forming quality of the accumulation layer, and the continuous adjustment of the composition can be realized without replacing the metal wire The present invention effectively solves the technical problem of excessive damage to the accumulation layer and low accumulation efficiency in the traditional arc additive manufacturing process.

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 Patents(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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