Method for measuring current density distribution of electric arc

A technology of density distribution and arc current, applied in arc welding equipment, manufacturing tools, welding equipment, etc., can solve problems such as unintuitive measurement results and insufficient measurement accuracy, and achieve simple measurement operation process, simple data processing, and simple installation and disassembly Effect

Active Publication Date: 2012-10-03
NANJING UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to provide a method and device for measuring the distribution of arc current density in view of the existing problems in the prior art, such as complex equipment, insufficient measurement accuracy, and unintuitive measurement results. The method has the advantages of simple equipment, high measurement accuracy, and The data processing is simple and can directly reflect the current density distribution

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  • Method for measuring current density distribution of electric arc
  • Method for measuring current density distribution of electric arc
  • Method for measuring current density distribution of electric arc

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Embodiment Construction

[0041] A device for measuring arc current density distribution according to the present invention is assembled according to the following steps:

[0042] Step 1: If figure 2 As shown, the assembly of the current receiving sensing device 5: it includes a casing 21, the casing 21 is through front and back, and a wide slit with a width smaller than the upper receiving copper plate 16 is set in the middle of the top; the concave support block 19 is built in the casing, and the The concave support block 19 is provided with an upper receiving copper plate 16, a lower receiving copper plate 17, and an insulating layer 18 placed between the upper receiving copper plate 16 and the lower receiving copper plate 17; adjusting screws 22 are set at the four corners of the bottom of the shell, and the height of the adjusting screw 22 is adjusted. , so that the concave support block 19 and the shell 21 clamp and position the upper receiving copper plate 16, the middle insulating layer 18, an...

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Abstract

The invention provides a method and a device for measuring current density distribution of an electric arc aiming at the defects of complicated device, insufficient measurement precision, unintuitive measurement result and the like in the prior art. The method has simple device, high measurement precision and simple late data process, and the current density distribution can be intuitively reflected. According to the method disclosed by the invention, a screw is driven by the motor to rotate so as to drive a sliding element arranged on a sliding groove and a current collecting component to move oppositely to the electric arc in measurement, the current value of the electric arc is subjected to scanning collection through the current collecting component, then a mathematical model of a current density value of the electric arc is built, and the energy distribution of the section of the electric arc on the anode surface is divided into each pixel point of which the area rule is solvable so as to solve the current density distribution value of the electric arc.

Description

technical field [0001] The invention belongs to the field of arc characteristic testing, in particular to a method and device for measuring arc current density distribution. Background technique [0002] The arc current density is one of the main parameters characterizing the characteristics of the welding arc. It can directly reflect the current distribution of the welding arc on the surface of the workpiece, and further reflect the distribution of heat input from the arc to the weldment. The shape of the pool, the size of the penetration depth, the transfer of the droplet, and the shape of the weld are all closely related. [0003] For the DC TIG arc, the research work mostly focuses on the distribution of the current density on the surface of the anode, because it can not only reflect the energy density, specific heat flow and distribution of the anode hot spot on the surface of the workpiece, but also reflect the heat input of the workpiece. In this process, not only ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095
Inventor 周琦周彦松周芷兰王克鸿朱军黄俊张德库冯曰海彭勇景岩章晓勇
Owner NANJING UNIV OF SCI & TECH
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