Aluminium alloy twin-wire dipulse welding method and welding power supply thereof

A welding power supply and double pulse technology, which is applied in the field of aluminum alloy high-speed arc welding processing, aluminum alloy double wire double pulse welding, can solve problems such as unstable welding, achieve good consistency, save volume, and reduce costs
CN101791733AInactive Publication Date: 2010-08-04SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2010-08-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an aluminium alloy twin-wire dipulse welding method and a welding power supply thereof. The specific method is as follows: carrying out low frequency modulation on pulse wave shapes on the basis of high frequency to obtain periodically varied pulse bursts; and carrying out efficient and superior welding on aluminium alloy through the active phase match of two branches of the pulse bursts. The welding power supply comprises IGBT soft switching main circuits which are integrated into a whole, a DSP control circuit and a man-machine interactive system. The invention puts forward realizing dipulse aluminum alloy welding on a twin-wire welding machine for the first time, realizes all digital control, directly generates eight branches of PWM signals by utilizing a software module, controls the two main circuits, and reduces the control problems caused by communication; and simultaneously, the two main circuits are concentrated on the same welding machine so that the overall structure is much smaller than the master-slave mode welding machine, in addition methods such as instantaneous energy control and the like are adopted to realize the fine control of dipulse.
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Description

technical field

[0001] The invention belongs to the technical field of aluminum alloy high-speed arc welding processing, in particular to the technical field of aluminum alloy double-wire double-pulse welding, and specifically refers to an aluminum alloy double-wire double-pulse welding method and a welding power source thereof. Background technique

[0002] Aluminum and its alloys not only have the characteristics of small specific gravity, high strength, and strong corrosion resistance, but also have excellent extrusion performance, good weldability, and high specific strength, so they have been widely used in aviation and aerospace in recent years. , nuclear energy and military industry and other fields, and the corresponding aluminum alloy welding technology is also developing by leaps and bounds.

[0003] According to the prior art, besides DC single-pulse MIG welding, there are the following welding techniques and methods for aluminum and aluminum alloys.

[0004] (1)...

Claims

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