Plasma welding device

Abstract

The plasma welding device comprises a welding machine and a welding gun, an adjusting cavity is formed in the welding gun, a plurality of adjusting plates are installed in the adjusting cavity, the side face of one side of each adjusting plate is in a streamline shape, and the side walls of the adjusting plates are connected with the inner wall of the adjusting cavity through two telescopic assemblies; the side wall of the adjusting plate is rotatably connected with a swing rod, a blocking plate is arranged on the inner wall of the adjusting cavity, the end, away from the swing rod, of the blocking plate is rotatably connected with the inner wall of the adjusting cavity through a rotating shaft, the inner wall of the adjusting cavity is slidably connected with a sliding seat, and a supporting wheel is arranged at the upper end of the sliding seat. A wedge-shaped part is arranged on the side wall of the blocking plate, the side wall of the supporting wheel makes contact with the side wall of the wedge-shaped part, and a connecting rod is fixedly connected to the side wall of the sliding seat, so that the flowing speed of shielding gas can be automatically adjusted, stability of the shielding gas is guaranteed, and welding quality reduction caused by too large or too small gas flow is avoided.

Description

technical field [0001] The present invention relates to the field of plasma welding, and more particularly, to a plasma welding device. Background technique [0002] Plasma arc welding refers to a fusion welding method that uses a high energy density beam of plasma arc as a welding heat source. Plasma arc welding has the characteristics of energy concentration, high productivity, fast welding speed, small stress deformation, stable arc and suitable for welding thin plates and box materials, especially suitable for welding of various refractory, easily oxidized and thermally sensitive metal materials . [0003] When the plasma welding machine is working, if the working air pressure is much lower than the required air pressure, the ejection speed of the plasma arc will be weakened, and the input air flow rate will be less than the specified value, so that enough negative ions with high energy and high speed cannot be formed, resulting in incisions. Poor quality, incision, an...

AI Technical Summary

Problems solved by technology

[0003] When the plasma welding machine is working, if the working air pressure is far lower than the required air pressure, the ejection speed of the plasma arc will be weakened, and the input air flow rate will be less than the specified value, and it will not be able to form enough negative ions with high energy and high speed, resulting in cuts The phenomenon of poor quality, impenetrable cutting, and tumor accumulation in the incision. When the air pressure is too high, the excessive air flow will blow away the concentrated arc column, causing the energy of the arc column to disperse and weaken the working strength of the plasma arc.

Images