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 problems such as arc breaking, decrease in ionization degree of arc space, and coating quality can not meet the requirements, etc., and achieve small deformation Effect

Inactive Publication Date: 2012-02-15
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 spraying thickness, and in the traditional rapid spraying process, due to the problem of excessive heat output, it is easy to cause thermoplastic deformation of the base material, and even melt the base material to affect the workpiece. practical functions, all of which require us to examine the practicability of process technology methods from a new design perspective
To sum up, although the traditional high-energy and high-rate spraying technology is relatively mature, there are two basic problems: 1. During the spraying process, due to the high tempera

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  • Direct-current pulsed arc processing system and arc processing method
  • Direct-current pulsed arc processing system and arc processing method
  • Direct-current pulsed arc processing system and arc processing method

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention will be further described;

[0027] The connection relationship as described above is adopted.

[0028] Such as figure 1 When spraying as shown, the main circuit is connected to 380v three-phase AC voltage. After the rectifier Z1, Z 1 It is composed of four unidirectional rectifier diodes; then it is filtered by filter capacitors C1 and C2 to obtain DC power supply to the full-bridge inverter circuit, which is composed of four IGBT switching devices or related integrated modules; the inverter voltage is output to high frequency The primary side of the transformer T is complex-varied and output to the rectification filter circuit, which is composed of two diodes VD1, VD2, high-frequency inductor L1, current limiting resistor R, and spraying wire 1 and spraying wire 2 as loads; the DSP controller drives circuit, controlling the IGBT 1~4 Medium IGBT 1 、IGBT 4 Simultaneously t...

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PUM

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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.

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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Application Information

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IPC IPC(8): C23C4/12C23C4/131
Inventor 黄鹏飞卢振洋姚明徐旦
Owner BEIJING UNIV OF TECH
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