Pneumatic pressure testing device of welding arc column

Abstract

The invention discloses a pneumatic pressure testing device of a welding arc column. The device is characterized in that the device comprises a disc-shaped bracket, a water-cooled copper pole is embedded in the upper portion of the bracket, and the side of a lower truncated cone is provided with a water inlet and a water outlet respectively connected with a water inlet tube and a water outlet tube; a ring groove is arranged under the water-cooled copper pole, a circulating water cooling cavity is formed between the ring groove and an embedded plane concaved in the upper portion of the bracketand communicated with the water inlet hole and the water outlet hole, and a small hole for detecting the pneumatic pressure of the arc column is opened in the center of the water-cooled copper pole; the lower truncated cone of the bracket is provided with a central through hole connected with a copper tube, one end of the copper tube is communicated with the small hole in the center of the copperpole and the other end is connected with a pressure sensor by a hose tube. The device can continuously measure the pneumatic pressure of the welding arc column and obtain radial distribution of the pneumatic pressure of the welding arc column with the welding arc column.

Description

technical field [0001] The invention relates to a welding arc column pneumatic pressure testing device, in particular to a testing device suitable for the non-melting electrode arc welding arc column pneumatic pressure testing device. Background technique [0002] In the welding process, the welding arc is not only a heat source, but also a force source. This power source has a direct impact on the penetration depth of the weld, the stirring of the molten pool, the shape of the weld, etc., and ultimately affects the welding quality. Therefore, improving the understanding of the size and distribution of the force source of the welding arc has important guiding significance for formulating a reasonable welding process and better controlling the welding quality. The forces in the welding arc mainly include plasma flow force, electromagnetic force, spot pressure, etc. Among these forces, the plasma flow force is dominant, which is the impact force generated by the high-speed m...

AI Technical Summary

Problems solved by technology

However, since these mathematical analytical formulas or numerical simulation results are proposed on the basis of simplified mathematical models, although they are reasonable to a certain extent, they lack universality and cannot accurately reflect the aerodynamic pressure of the welding arc column under a specific working condition. size and distribution of

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