Galvanized pipes, the pure zinc layer has densely covered the appearance of the steel. It can prevent any corrosive solution from contacting the steel matrix and maintain the corrosion of the steel substrate. In the ordinary atmosphere, in a thin layer of densely dense zinc oxide layer, the appearance of the zinc layer is difficult to dissolve in water, so the maintenance effect of the steel substrate.
Galvanized steel can be polished before welding at galvanized steel pipes! Otherwise, bubbles, trachoma, fake welding, etc.; Will also make the welds crispy and steel.
Welding quality assurance measures
Control from five aspects: people, materials, machines, law, and ring.
① Human factors are the focus of welding control. Therefore, before welding, welders who are skilled and welded should be selected to conduct necessary technical training and configuration. It is not allowed to replace it at will to ensure that the welding pipe welders are relatively stable.
② Control of welded materials: ensure that the welded material of regular channels is purchased, there are warranty books and qualification certificates, which meet the process requirements; strict control of the barrier to ensure the flow and amount; The distribution does not exceed half a day.
③ Welding machine: The welding machine must ensure reliable performance and meet the needs of process; the welding machine must have a qualified current and voltage gauge to ensure the correct implementation of the welding process. Welding cables should not be too long, and welding parameters must be adjusted for a long time.
④ Welding process method: To ensure the strict implementation of the special operation method of galvanized galvanized pipes, the welding process is inspected before welding, the welding process parameters, the operation method control, and the appearance quality inspection after welding. Control the amount of welded material at the welding level and the amount of welded in each mouth.
⑤ Welding environment control: ensure the temperature, humidity, and wind speed during welding meet the process requirements.
