Welding under pressure is mainly under the background of not normal work, and special welding skills are implemented. There is a certain gap between this and the normal welding form. In the process of actual operation, a certain degree of safety should be shown. Welding workers should follow safety precautions and strive to ensure that the work of the welding machine is more complete and reasonable. The form of hammer twist pressure welding is mainly used in the cracks of low pressure vessels and pressure pipelines, and it is also used to weld pores. In the process of welding, a small diameter electrode should be used. In the specific operation, the heat of the arc should be used to heat the periphery of the leak point. After the arc is extinguished, use a hammer, etc. to squeeze and hammer the leaked position.
Riveting welding method: When the crack is relatively wide or the diameter of the pore is relatively large, it will show greater difficulty when twisting and pressing. At the same time, the cylinder is made of the same material as the base metal to prevent a large leakage pressure, thereby increasing the welding speed. When there are irregularities around the cracked Russia, the hard veneer can also be used for welding. When welding, pay attention to the following key points: perform a blockage, perform faster welding, and then proceed to the next step. Top Flow Welding: Generally, some welds tend to be produced at the level of corrosion and wear. This way, epitaxial welding should be done where the leak is. Starting from the specific corrosion situation, a week of welding is carried out. In this context, it is gradually advanced to ensure that the area of leakage will gradually shrink, and finally the form of riveting is used, and a relatively small diameter is used. Current sealing is performed on larger welds.
