The spiral steel pipe is a spiral seam steel pipe based on the steel roll plate as the raw material, which is often squeezed and formed, and welded with the automatic dual -wire double -sided arc welding process.
Buried arc automatic welding is a new welding method invented in 1940. It is the same as it is the same as the previous hand -welding, but it uses residue protection. However, this residue is not a pill that is welded and is a welding medicine specially melted.
The welding method of the spiral steel pipe is particularly unique. The characteristics are: using a squeezing device to squeeze the inner surface of the inner surface of the steel plate on both sides of the unsaturated welded seams, eliminate the prominent point of uneven The inner side of the steel plate is smooth and smooth, and then welded.
At the same time, the squeezing device is also used as a positioning device for welding heads. The welding head is about to be tightly fixed with the extrusion device. When the squeezing device moves along the welded seam, it is ensured that the welding head is also accurately along the along the welding head. Unde -welded welding movements are moved to ensure that the welding head is always located in the middle of the weld. This can ensure that the quality of the welding seam is automatically welded and the quality of the production line is stable and excellent, and it is basically no manual repairs.
The first advantage of this method of welding of spiral steel pipes is that the first advantage is fully realized automation; the second advantage is to weld under the buried arc, so its thermal exchange and protection performance is relatively strong, and the quality of welding is compared with comparison quality. High; the third advantage is that the arc is buried under the welding medicine because the arc automatic welding is automatically welded.
The spiral steel pipe is a spiral seam steel pipe based on the steel roll plate as the raw material, which is often squeezed and formed, and welded with the automatic dual -wire double -sided arc welding process.
The difference between the automatic arc automatic welding is that the automatic arc automatic welding does not use the electrode, and the welding wire is used, because the welding wire can be given continuously; the stripe must be thrown away after the flames of the box must be thrown, and the operation stops the operation. , Change the strip and then welded. After changing it to welding wire, use the device and welded wire of the welding wire to continuously give it to the welded wire. This welding method is the welding wire continuously delivered in. A part of the melting and evaporation of the weld forms an empty cavity. The arc is burned stably in the cavity, so it is called the buried arc automatic welding.
