Inverter type electric arc spraying power source based on phase-shifted full-bridge

Abstract

The invention relates to an inverter type electric arc spraying power source based on a phase-shifted full-bridge. The inverter type electric arc spraying power source comprises a first rectifier circuit, a first filter circuit, a full-bridge circuit, a high-frequency transformer T, a second rectifier circuit and a second filter circuit, all of which are orderly connected to one another, wherein the first rectifier circuit is connected to a three-phase alternating current input; the second rectifier circuit is connected to an arc pistol. The inverter type electric arc spraying power source further comprises an auxiliary control module which is used for controlling the full-bridge circuit to work. The inverter type electric arc spraying power source has the advantages that soft switching of a switching tube is realized by use of the phase-shifted full-bridge, the switching loss of the power source is greatly reduced due to the use of the soft switching technology, the overall efficiency is improved and the electric energy is saved.

Description

technical field [0001] The invention relates to the field of surface engineering thermal spraying, in particular to an inverter arc spraying power supply based on a phase shifting full bridge. Background technique [0002] Arc spraying technology is an economical, widely applicable, flexible and high-efficiency thermal spraying method, and it is a surface modification technology widely used in the industrial field. With the continuous improvement of arc spraying equipment, the spraying process has been improved, and the arc spraying technology has ushered in new development. [0003] The basic principle of arc spraying is to add an arc spraying power supply between two continuously fed metal wires to form an arc, the heat of the arc melts the metal, and uses compressed air to atomize the molten metal into micro-droplets, which are sprayed to the workpiece at high speed The surface forms a coating. On the basis of not changing the properties of the base material of the work...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an inverter arc spraying power supply based on a phase-shifting full bridge, which solves the problems of traditional spraying machines with large volume, heavy mass and no feedback in terms of structure and control methods. control, unable to accurately control the output voltage and other shortcomings, on the basis of reducing the size of the whole machine, the performance is improved and the spraying quality is optimized

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