Active flux for A-TIG welding

Abstract

The invention relates to an active flux for A-TIG welding. The active flux for A-TIG welding comprises the following components in percentages by mass: 25-40% of SiO2, 10-25% of Cr2O3, 15-25% of TiO2, 5-10% of B2O3, 4-6% of Al2O3, 4-6% of MnO, 1-10% of Fe2O3, 0.5-2% of Ti, 1-5% of Cr and 1-5% of Si, wherein the sum of Cr2O3 and Fe2O3 is less than 20%; the sum of Al2O3 and MnO is less than 10%; and the sum of Cr2O3 and TiO2 is less than 40%. The active flux can be used in stainless steel, low-carbon steel and welding in the stainless steel and the low-carbon steel, and the depth of fusion can be increased; under the condition of the same welding parameters, surface forming is good, the depth of fusion is increased by 2-3 times, thorough welding of a gapless butt joint with the thickness of 10-12 mm can be implemented at a time, a welding technology is greatly simplified, and the production efficiency is improved; and meanwhile, the corrosion resistance and the mechanical property of weld metal can be improved, and a welding environment is good in a welding process.

Description

technical field [0001] The invention relates to an active flux for A-TIG welding, which belongs to the field of welding materials, in particular to an active flux suitable for A-TIG welding of stainless steel, low carbon steel, and stainless steel and stainless steel. Background technique [0002] A-TIG welding (Activating Flux TIG) as an efficient new welding method has attracted the attention of scholars at home and abroad. The welding method refers to coating a thin layer of surfactant on the surface of the welding plate, thereby greatly improving the welding. method of penetration. The most important thing for A-TIG is the active flux. At present, there have been many researches on active fluxes for different materials at home and abroad. The main components are oxides, halides and fluorides, which makes the existing active fluxes exist. The following disadvantages: 1. Toxic gas or heavy metal hazards are produced, such as patented technology: the active flux in 2012102...

AI Technical Summary

Problems solved by technology

The most important thing for A-TIG is the active flux. At present, there have been many researches on active fluxes for different materials at home and abroad. The main components are oxides, halides and fluorides, which makes the existing active fluxes exist. The following disadvantages: 1. Toxic gas or heavy metal hazards are produced, such as patented technology: the active flux in 2012102005570 is mainly MnCl 2 Toxic halogen gas is produced, and another example is the patented technology: the active flux in 2009100839364 contains V 2 o 5 It is easy to produce heavy metal vapor that endangers the health of the operator; 2. It is not very helpful to improve the performance of the weld metal. The current active flux only improves the welding penetration and does not effectively improve the performance of the weld metal.