According to the editor of Duomu Industrial, a welding current of 3-10A is generally used to weld thin plates with a thickness of 0.08-0.6mm. Because of the low density of titanium liquid and high surface tension, the small hole effect of the micro-beam plasma welder can be used for single pass. Weld titanium liquid and liquid titanium with a large thickness to ensure that the molten pool will not collapse and the weld will be well formed. Usually single-pass argon tungsten arc welding, the maximum thickness of the workpiece does not exceed 3mm, and because the tungsten electrode is close to the molten pool, Tungsten electrode erosion may occur, causing the weld to penetrate into tungsten inclusions.
Micro-beam plasma welding machine is used for welding, its strength is equivalent to that of argon arc welding, and its strength coefficient is 90%, but the plasticity index is 15mm higher than that of argon arc welding, and when welding the base material, the base material can be penetrated to 15mm Above, the base material can be melted into the titanium plate below 15mm, so that the surface is V-shaped or U-shaped, and the thickness of the welding seam can reach more than 15mm.
The welding current of the micro-beam plasma welding machine is below 30A, and the arc form is a combined arc, that is, the dimensional arc and the working arc exist at the same time. When the weld gap is slightly larger, the weld reinforcement is insufficient or the weld is concave, it means the weld metal Insufficient filling, filler wire should be used. Filler wire should be special welding wire with the same metal composition as the base metal, or edge strips cut from the base metal. When welding, do not move the micro-beam plasma immediately after the transfer arc is generated The welding machine should keep the micro-beam welding wire in place, and after the base material is melted to form a molten pool, start to fill the welding wire and move the welding machine.
The welding seam and the welding nozzle center have high requirements for the centering and welding seam. The editor of Duomu Industry recommends that the deviation should be as small as possible, otherwise it will cause partial welding or undercut. At the same time, when the arc is extinguished or finished during the welding process, micro-beam plasma welding The machine must stay in place for a few seconds to continue to protect the high-temperature weld with the shielding gas to avoid oxidation. In short, the micro-beam plasma welding machine has energy concentration, high temperature, fast welding speed, stable arc, and more materials that can be welded. Good quality and other characteristics.
