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Single-power-source VPPA-GTAW binary electric-arc punching welding method

A technology of arc perforation and welding method, which is applied in the direction of arc welding equipment, welding equipment, plasma welding equipment, etc., to achieve the effect of increasing the penetration ability

Active Publication Date: 2014-02-26
BEIJING UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects and deficiencies of the existing welding method, and to provide a single power supply VPPA-GTAW two-state arc piercing welding method

Method used

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  • Single-power-source VPPA-GTAW binary electric-arc punching welding method

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Such as figure 1 Shown is a schematic diagram of the working principle of dual-state arc perforation welding. The single-power VPPA-GTAW dual-state arc perforation welding device includes welding power supply and its control system 1, plasma welding torch 2, TIG welding torch 3, workpiece to be welded 4 and semiconductor commutation Switch 5; the plasma welding torch 2 and the TIG welding torch 3 are respectively placed at appropriate positions on both sides of the workpiece 4 to be welded. Adjust the parameters of the welding torch to meet the welding requirements; the connection method of the welding method related to the electrical circuit, the gas and water connections that the welding torch must use are conventional connections;

[0032] The whole welding system includes two independent current paths: welding power supply—TIG welding torch 3—plasma welding...

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Abstract

The invention relates to a single-power-source VPPA-GTAW binary electric-arc punching welding method and belongs to the technical field of welding. The method includes that a welding current loop is changed through a welding control system, and binary electric arcs which are composed of conventional plasma electric arcs and penetrating electric arcs and constantly change are formed; the conventional plasma electric arcs complete heat input of plasma arc side parent metal and play a role in cathode atomization; the penetrating electric arcs penetrate a workpiece, energy is centralized, heating efficiency is improved, and welding deformation can be effectively reduced; respective adjusting and accurate control of heat input of the binary electric arcs on parent metal on two sides of a welded workpiece can be realized by adjusting variable-polarity plasma arc welding parameters. By the method, variable-polarity plasma arc welding equipment is ensured not to be changed, welding penetration depth can be increased remarkably, heat input of the parent metal can be effectively reduced, welding quality of medium and thick plates can be improved, and high-efficiency and high-quality welding can be realized.

Description

technical field [0001] The invention relates to a welding method in which a conventional plasma arc and a piercing arc are mutually coupled, belongs to the field of welding methods, and in particular relates to a single power supply VPPA-GTAW two-state arc piercing welding method. Background technique [0002] In the process of modern manufacturing and industrial production, welding technology has become an important processing technology, and it is widely used in industrial sectors such as automobiles, ships, oceans, and aerospace. Today, among many different forms of metal joining, arc welding has been widely used to produce a variety of high-quality connections. This is because arc welding has proven to be the most economical way of joining metals in many applications. With the vigorous development of various fields of society, the industry pays more and more attention to improving the productivity of welding production, ensuring product quality, and realizing the automat...

Claims

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Application Information

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IPC IPC(8): B23K28/02B23K10/02B23K9/167B23K9/095
CPCB23K9/067B23K9/095B23K9/10B23K9/167B23K10/006B23K28/02
Inventor 陈树君张俊林门广强张亮刘岩刘松
Owner BEIJING UNIV OF TECH
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