Device and method for joint test of electric arc current density distribution and electric arc pressure distribution

Abstract

The invention discloses a method and device for a joint test of electric arc current density distribution and electric arc pressure distribution, which are specifically applied to non-melt pole welding and belong to the technical field of electric arc tests. The device comprises a welding gun travelling mechanism, a cooling loop, an electric arc force testing system, a current testing system and the like. In the electric arc moving process, electric arc current flowing through a tested anode and electric arc force stressed on the tested anode are synchronously collected, an annular segmentation processing method is adopted for a circular section of an electric arc, the electric arc current density and the electric arc pressure are subjected to distributed computation, and an electric arc current density distribution curve and an electric arc pressure distribution curve are made. The device has the advantages of simple structure, simple testing steps and higher precision and credibility, and is convenient in data processing and solving.

Description

technical field [0001] The invention belongs to the technical field of arc testing, is specifically applied to non-melting electrode welding, and relates to the research on the physical characteristic measurement of welding arc and the field of welding technology. Background technique [0002] The arc is a gas conductor between two electrodes. The ablation pits on the electrode surface were observed by high-speed photography and SEM scanning electron microscope, which showed that the arc was circular. Considering that the arc moves slowly and at a uniform speed, the arc is little affected by the outside world. For a uniformly compressed arc, its cross section can be considered to be approximately circular. [0003] The arc pressure determines the surface shape of the molten pool, the arc current density distribution directly determines the arc heat flux distribution, and the arc heat flux distribution describes the way the arc heat is transferred to the weldment, so the arc...

AI Technical Summary

Problems solved by technology

In the past, the methods for studying arc pressure were mainly the continuous measurement method of the sensor and the static measurement method of the barometer, and the method for studying the current density was the probe method, etc., but there are shortcomings, and it is necessary to measure both the current density and the arc pressure at the same time. There are not many studies on the device, so it is of great practical significance to find a reasonable method that can measure both the arc current density and the arc pressure and to invent a convenient and practical device.

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