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Non-melting electrode welding method based on gas-electric pulse combined action

A non-melting electrode and joint action technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve problems such as shallow penetration, low productivity, and low deposition speed, so as to maintain consistency, suppress arc divergence, reduce Effect of Weld Formation Defects

Active Publication Date: 2017-09-01
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Shallow penetration, low deposition speed, low productivity, only suitable for thinner plate welding

Method used

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  • Non-melting electrode welding method based on gas-electric pulse combined action
  • Non-melting electrode welding method based on gas-electric pulse combined action
  • Non-melting electrode welding method based on gas-electric pulse combined action

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Effect test

Embodiment 1

[0047] A non-melting electrode welding method with gas-electric pulse combined action in this embodiment, taking plasma synchronous control welding with gas-electric pulse combined action as an example, the specific operation is as follows

[0048] Step 1: Before welding, after grinding and cleaning the 5mm thick aluminum alloy plate of the workpiece to be welded, fix it on the welding fixture;

[0049] Step 2: Follow the figure 2 As shown, connect the circuit and gas circuit, make the plasma welding torch vertical to the upper part of the part to be welded, and connect the air flow waveform controller and ion gas control execution unit into the system;

[0050] Step 3: Set welding process parameters: welding current 80 / 120A, welding speed 0.1m / min, arc height 4mm, shielding gas flow 16.0L / min, ion gas flow 3.0L / min and 4.0L / min, shielding gas and The ion gas is 99.99% argon, the peak time is 25ms, and the base value time is 6ms;

[0051] Step 4: Select the time node in a s...

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Abstract

The invention discloses a non-consumable electrode welding method with a gas-electricity pulse combined effect, and belongs to the field of welding methods. The method is characterized in that current in a non-consumable electrode welding power supply is changed in a pulse form; and the control of gas way gas flow required to be modulated is realized through combining a gas flow waveform controller and a gas flow control actuation unit with a current pulse waveform. As the combined control is performed for gas and electricity to achieve the gas-electricity pulse combined effect, the improvement of welding line formation and quality is realized. The welding method greatly enhances the gas and electricity matching degree, improves the non-consumable electrode welding process, and facilitates to improve the welding line formation and to enhance the welding line quality.

Description

technical field [0001] The invention relates to a non-melting electrode welding method with gas-electric pulse combined action, belonging to the field of welding methods. Background technique [0002] In recent years, as global warming and energy issues have become increasingly prominent, governments of various countries have put forward new requirements for lightweight products. Lightweight structural alloys such as aluminum alloys and magnesium alloys are used in machinery manufacturing, aerospace, automobile industry and 3C It is particularly important and urgent to effectively solve its welding problems and develop welding methods more suitable for welding light alloys. [0003] As a kind of non-melting electrode welding, argon tungsten arc welding is widely used because of its high-quality welding. It has the following advantages: (1) Argon gas can effectively isolate the surrounding air but itself is insoluble in metal, and It does not react with metals; the arc also ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/167B23K9/32B23K10/02
CPCB23K9/167B23K9/32B23K9/325B23K10/02
Inventor 蒋凡张瑞英陈树君肖珺闫朝阳王立伟
Owner BEIJING UNIV OF TECH
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