Double-contravariant alternating square wave argon tungsten-arc welder and control method thereof

Abstract

The invention discloses a double-contravariant alternating square wave argon tungsten-arc welder which comprises a main board circuit module, an output board circuit module, a panel control circuit module and a striking arc / pilot arc circuit module. An input end of the main board circuit module is connected with an external alternating input power plug through a power switch. An output end of the main board circuit module is connected with an input end of the output board circuit module through multi-core range cables. A positive output connector and a negative output connector of the welder are respectively connected with an output end of the output board circuit module through copper bar cables. The panel control circuit module is connected with a control end mouth of the main circuit module through multi-core range cables. An input end of the striking arc / pilot arc circuit module is connected with a control end mouth of the output board circuit module through multi-core range cables. An output end of the striking arc / pilot arc circuit module is connected with an output end mouth of the output board circuit module through a high frequency coupling inductor. The double-contravariant alternating square wave argon tungsten-arc welder is used for reducing power consumptions of a power supply, saving material costs, volume of compressing whole machine and weights of the whole machine, increasing portability of the welder, and improving duty cycle.

Description

technical field [0001] The invention relates to an argon arc welder in the technical field of welding equipment, in particular to a double-inverter AC square-wave tungsten argon arc welder and a control method thereof. Background technique [0002] AC square-wave argon-tungsten arc welding machines generally have functions such as manual electrode welding, DC pulse argon-arc welding, and AC square-wave argon-arc welding. The power consumption of the secondary inverter is large, the efficiency of the whole machine is low, the whole machine is large in size, heavy in weight, low in duty cycle, and high in material cost; [0003] AC argon arc welding needs to adjust many parameters, and the existing AC square wave argon tungsten arc welding machines generally have defects such as a large number of operation buttons, crowded panels, complicated operations, and low precision of parameter control. Therefore, there is a special need for a new AC square wave argon tungsten arc weld...

AI Technical Summary

Problems solved by technology

[0002] AC square-wave argon-tungsten arc welding machines generally have functions such as manual electrode welding, DC pulse argon-arc welding, and AC square-wave argon-arc welding. The power consumption of the secondary inverter is large, the efficiency of the whole machine is low, the whole machine is large in size, heavy in weight, low in duty cycle, and high in material cost;

[0003] AC argon arc welding needs to adjust many parameters, and the existing AC square wave argon tungsten arc welding machines generally have defects such as a large number of operation buttons, crowded panels, complicated operations, and low precision of parameter control.

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