Direct-current pulsed arc processing system and arc processing method

A technology of arc processing and DC pulse, which is applied in metal material coating process, fusion spraying, coating, etc., can solve the problems of arc breaking, damage to material properties, and insufficient arc supply, etc., and achieve the effect of small deformation
CN102352476BInactive Publication Date: 2013-08-21BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2013-08-21
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a direct-current pulsed arc processing system and an arc processing method, belonging to the surface technical field. The system comprises a basic parameter control module A, a man-machine parameter setting device B, a DSP (digital signal processor) controller D and a main circuit C, wherein the main circuit C comprises a rectifier Z1, an inverse circuit 1, a high-frequency transformer T and a rectification circuit 2 which are accessed into an alternating current circuit in turn; the output of the rectification circuit 2 is provided with a spraying wire 1 and a spraying wire 2; and a current signal sampling device LEM1 is connected between the rectification circuit 2 and the spraying wires. In the whole spraying process of arc processing, the output frequency of the wire feeding pulse and the gas feeding pulse of a gas flow valve 4 is consistent with the output frequency of power supply energy, thus the peak values and basic values are simultaneously achieved.By using the system and method, metal layers can be covered on various thin parent materials, and a generated deformation is small; and small-energy spraying can be carried out on plastic or other workpieces with low melting points.
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Description

technical field

[0001] The invention belongs to the field of surface technology, and is mainly applied to arc spraying processing. Specifically, it refers to an arc spraying system and its application method that are different from other fast AC and DC pulses with small flow and precise control. technical background

[0002] With the development of the surface technology field, the arc spraying process has been widely used in various surface modification fields, and various production industries have also put forward higher requirements for the spraying process. In some surface processes, it is often necessary to spray a thin wear-resistant or anti-corrosion metal layer on different metal base materials, some need to spray process metal materials on non-metallic materials such as plastics, and some need to cover new functional materials on sheet metal ; In the traditional continuous spraying method, it is difficult to achieve the requirement of accurately controlling the sp...

Claims

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