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A multi-tungsten argon arc heat source, control method and welding device

A control method, tungsten argon arc technology, which is applied in the field of surfacing welding, can solve the problems of low deposition speed and low dilution rate, and achieve the effects of increasing arc energy, increasing deposition rate, and ensuring dilution rate

Inactive Publication Date: 2020-10-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of low deposition speed in order to ensure a low dilution rate in the existing argon tungsten arc surfacing process, the present invention provides a multi-tungsten argon arc heat source, a control method and a welding device

Method used

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  • A multi-tungsten argon arc heat source, control method and welding device
  • A multi-tungsten argon arc heat source, control method and welding device
  • A multi-tungsten argon arc heat source, control method and welding device

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Embodiment 1

[0039] Embodiment 1: as figure 1 and figure 2 As shown, the heat source in this embodiment includes three welding power sources, three switches, six tungsten electrodes and argon shielding gas; the six tungsten electrodes are arranged in a straight line, represented by numbers 1 to 6 respectively; three power sources are used, Respectively represented by A, B, and C; No. 1 and No. 4 tungsten electrodes are connected to welding power source A, No. 2 and No. 5 tungsten electrodes are connected to welding power source B, No. 3 and No. 6 tungsten electrodes are connected to welding power source C; in this embodiment, tungsten The pole spacing is 1-6mm, the welding current is 30-500A, the switching frequency of the switch is 1-1000Hz, and the distance between the tungsten electrode and the base metal is 2-6mm;

[0040] When the heat source is working, switch the switch to energize the welding circuit of power source A. The arc is first ignited on the No. 1 tungsten electrode, and...

Embodiment 2

[0041] Embodiment 2: as image 3 As shown, the heat source in this embodiment includes three welding power sources, three switches, nine tungsten electrodes and argon shielding gas; the nine tungsten electrodes are arranged in a 3*3 array, represented by numbers 1 to 9 respectively; A power supply, denoted by A, B, C respectively; No. 1, No. 4 and No. 7 tungsten electrodes are connected to welding power source A, No. 2, No. 5 and No. 8 tungsten electrodes are connected to welding power source B, No. 3, No. 6 and No. 9 The tungsten electrode is connected to the welding power source C; in this embodiment, the distance between the tungsten electrode and the base metal is 1-6mm, the welding current is 30-500A, the switching frequency of the switch is 1-1000Hz, and the distance between the tungsten electrode and the base metal is 2-6mm;

[0042]When the heat source is working, switch the switch to energize the welding circuit of power source A. The arc is first ignited on the No. 1...

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Abstract

The invention aims at solving the problem that in an existing tungsten-electrode argon arc surfacing process, a deposition speed is low in order to ensure a low dilution rate, provides a multi-tungsten-electrode argon arc heat source, a control method and a welding device, and belongs to the technical field of surfacing. The multi-tungsten-electrode argon arc heat source comprises N welding powersources, N switching switches, M tungsten electrodes and argon protection gas; N and M are all positive integers larger than or equal to 3; the negative electrode of each welding power source is connected to one or more tungsten electrodes, the end surfaces of the M tungsten electrodes are arranged in a line shape or a surface shape, the distance between every two adjacent tungsten electrodes canguarantee electric arc transmission, and the adjacent three tungsten electrodes are correspondingly connected to different welding power sources;the M tungsten electrodes are located above a base material; the positive electrode of each welding power source is connected to the base material through one switching switch; and the argon protection gas is distributed between the tungsten electrodes and the base material. The welding device comprises the heat source and a welding torch; and the M tungsten electrodes of the heat source are arranged in the welding torch at the same time.

Description

technical field [0001] The invention relates to a heat source for tungsten argon arc surfacing welding, in particular to a multi-tungsten argon arc heat source, a control method and a welding device, belonging to the technical field of surfacing welding. Background technique [0002] Surfacing welding is a process of depositing materials with certain properties on the surface of the weldment, and obtaining a deposited metal layer with special properties such as wear resistance and heat resistance on the surface of the weldment. Overlay welding can significantly increase the service life of weldments, save manufacturing and maintenance costs, shorten repair time, thereby increasing productivity, so it is widely used in manufacturing and maintenance work in various industries. [0003] Tungsten argon arc surfacing has many advantages such as stable arc, less spatter, good visibility, and easy control of the shape of the surfacing layer. However, in order to ensure a low diluti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/167B23K9/10B23K9/32
CPCB23K9/1087B23K9/1675B23K9/32
Inventor 高洪明李志伟
Owner HARBIN INST OF TECH
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