Fine welding conductive nozzle and manufacturing method thereof

Abstract

The invention discloses a fine welding conductive nozzle. The fine welding conductive nozzle is composed of a main body 10, a heat insulation sleeve 20 and a spring clamp 30, wherein a welding wire passing hole 12 is formed in the main body 10, a conductive block 13 is arranged at the front section of the main body 10, the interior of the heat insulation sleeve 20 is provided with a cavity, and the cavity is connected with a receding hole 22; and a welding wire passes through the welding wire passing hole 12 and the conductive block 13, penetrates out of the receding hole 22 and then is sent into a welding molten pool for welding a workpiece. The heat insulation sleeve 20 isolates the conductive block 13 from the high-temperature molten pool, the spring clamp 30 is made of a high-temperature-resistant alloy, and the spring clamp 30 provides elastic force for the conductive block 13 so that during the welding production of a continuous large current, the conductive block 13 of the conductive nozzle can continuously keep the clamping state of the welding wire in a severe high-temperature environment, thereby improving the conductive performance of the conductive nozzle. The conductive block 13 provides several times the materials of a conventional conductive nozzle for the wear of the welding wire, and the service life is also doubled.

Description

technical field [0001] The invention relates to a welding contact tip and a manufacturing method thereof. Its characteristic is that, compared with the existing technology, not only the service life and the electrical conductivity have been significantly improved. And the structure is simpler and finer, the contact tip is not only easier to process; but also the diameter is smaller, which is beneficial to the flow of shielding gas and the protection of the molten pool; the length is shorter, which can meet the requirements of welding in narrow spaces, and has better adaptability Wide; and can be used continuously in the extreme high temperature environment with high current. Background technique [0002] The contact tip is a key part in gas metal shielded welding. Its function is to transmit the electric energy of the welding machine to the welding wire, so that the welding wire conducts electricity, so it is called "conductive tip". During welding, the welding wire is con...

AI Technical Summary

Problems solved by technology

If the apertures of the third through hole and the second through hole are too large, it will inevitably affect the smoothness and continuity of the welding wire passing through, so that the filler metal entering the molten pool is often less, resulting in defects of different widths of welds.

When the weld narrows, the weld strength also decreases, which can have serious consequences

The diameter of the third through hole and the second through hole becomes larger, which will also cause the consequence that the welding wire is not allowed to come out, and the welding wire is not allowed to go out, so that the weld seam will be biased.

Its organizational structure is complicated, the production cycle is long, and the cost is high, which is also a major shortcoming of this patent

Images