What does the second welding mean?

Double-sided shielded welding is a welding method, which uses carbon dioxide gas as shielding gas for welding.

The invention is suitable for welding various large steel structures of low-carbon steel and low-alloy high-strength steel. High welding productivity, good crack resistance, small welding deformation and wide deformation range, which can be used to weld thin and medium plates.

The second welding process is simple in application and suitable for automatic welding and omnidirectional welding. Poor wind resistance during welding, suitable for indoor operation. Because of its low cost and easy to produce carbon dioxide gas, it is widely used in enterprises of all sizes. Due to the special influence of the thermophysical properties of carbon dioxide gas, it is impossible to form the axial free transition of metal liquid balance at the end of welding wire when using conventional welding power supply, and short circuit and droplet necking explosion are usually needed. Therefore, compared with the free transition of MIG welding, the splash is more.

Characteristics of the second welding machine:

1, simple operation, easy arc initiation and stable arc.

2. Wide adjustment range of voltage and current, easy control of penetration and weld seam.

3. Good welding quality, good crack resistance of weld, beautiful appearance, small deformation of weldment, and no slag removal after welding.

4. High efficiency, several times higher than manual arc welding.

5. Easy adjustment. By adjusting the wire feeding speed, continuous welding, spot welding, gap spot welding and self-locking welding can be realized. This is a multifunctional welding equipment.

6. Most fans are used for forced cooling, with strong heat dissipation. Generally, there are overload protection, overvoltage protection, undervoltage protection, phase failure protection and output overcurrent protection. Many of them use IGBT frequency conversion technology, and their performance is stable.