Welding method for setting double pulse welding parameters based on mathematical model

Abstract

The invention relates to the technical field of digital welding of aluminum magnesium alloy, in particular to a welding method for setting double pulse welding parameters based on a mathematical model, and discloses a method for realizing welding by a fixed frequency and variable frequency calculation method of a double pulse metal-inert gas (MIG) welding wave form which is designed based on the mathematical model. Continuous adjustable change is performed according to a certain rule based on basic values a and b of strong and weak pulse groups, numbers n1 and n2 of strong and weak pulses are subjected to assistant adjustment, and a welding current range can be effectively expanded, so that the welding current in a wider range can be adjusted continuously. Meanwhile, at the transition stage of the strong and weak pulses, a gradual change mode is adopted by the pulse basic values to ensure that the transition of the strong and weak pulses is smoother, and the welding process is more stable.

Description

A Welding Method Based on Mathematical Model to Set Double Pulse Welding Parameters technical field The invention relates to the technical field of digital welding of aluminum-magnesium alloys, in particular to a welding method for setting double-pulse welding parameters based on a mathematical model. Background technique FRONIUS company in Austria has done the best in the field of aluminum alloy welding expert database. The company has developed a series of digital inverter pulse MIG / MAG welding machines with expert database. The sales price of such high-end machines as FRONIUS can easily exceed hundreds of thousands or even hundreds of thousands of RMB, and its core is the constantly upgraded expert database applicable to various welding consumables. The domestic research and development of aluminum alloy double pulse database is still in the experimental research stage, in Beijing in 2010. No domestically produced double-pulse MIG welding machine that can continuously ...

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Problems solved by technology

For the dual-pulse MIG welding method of welding power sources at home and abroad, the welding specifications are more complicated, and there are many important parameters, such as the base value of the strong and weak pulse group, the magnitude and time of the peak current, the frequency and duty cycle of the strong and weak pulse group, As well as wire feeding speed and welding speed, etc., all direc

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