Stainless steel flanges have been widely used in oil, water, and natural gas pipelines, and most of them have a certain pressure. So, what are the skills for welding stainless steel flanges? Let's find it below! Clean the dust and dirt, such as oil stains, on stainless steel corrugated pipes and flange pipes. If the weld seam cracks and leaks, the original weld mark should be removed. The metallic luster of the flanged straight pipe is polished. The straight pipe of the corrugated pipe is too thin to be ground, polished, and cleaned.
The welding installation gap of stainless steel flanges is 0. Due to processing and manufacturing errors, sometimes the gap is too large, and the melt is easily burned during the welding process. Can cover the solution on the straight flange pipe. 0-0.05mm gap or manually polished. If the sleeve is not facing upwards, the flange outer diameter of the straight pipe should be reduced or decreased until it is suitable to stop.
The welding arc of stainless steel flanges is necessary to be carried out on the flange pipe. The arc should be directed towards the thick tube. The external flame of the arc is used to heat the corrugated tube, and the edge of the corrugated tube is blocked by the welding wire. It is necessary to weld on thick pipes and use short or spot welding for welding. It is necessary to always investigate the melting condition of the corrugated pipe when welding stainless steel flanges.
Usually, 1 to 3 melt pools are melted at once. Continuous welding is not suitable, especially when the gap is large, it is easy to burn through. The arc welding skill for stainless steel flanges is not to directly direct the arc towards the corrugated pipe, but to use the residual heat of the arc to melt the corrugated pipe for welding. Please pay attention to these matters when welding stainless steel flanges.
