What is double-sided shielded welding? What is double-sided shielded welding?

The principle of double shielded welding is to use the welding wire and weldment as two electrodes to generate an arc, use the heat of the arc to melt the metal, and use carbon dioxide gas as protective gas to protect the arc and molten pool, thus obtaining a good welded joint.

1, the full name of double shielded welding is: carbon dioxide gas shielded welding, which is a welding method.

2. At present, this welding method has become one of the most important welding methods for ferrous materials.

Generally, it takes 7- 15 days for two-guarantee welding.

If it is difficult to say, the threshold of welding should be lower and easier to learn. However, both have their own advantages and advantages. The key is where to weld and what to weld.

Electric welding: it is the common name of covered electrode electric arc welding. A welding operation in which covered electrode is used to melt at high temperature where an arc is needed to connect the metal parts. The principle of electric welding is to use electric arc to instantly ignite chemicals to release high temperature, and the central temperature can reach 5000 degrees Celsius. Common are arc welding and submerged arc welding.

Double protection welding: this process is suitable for welding of 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 advantage of double shielded welding is open arc welding, which is easy to realize all-round semi-automatic and automatic welding. Generally, bare welding wire is used, and the arc heat is concentrated, the heat affected zone is small, and the welding deformation and weld cracking tendency are small. Therefore, the welding operation is convenient, the weld quality is high, and the comprehensive cost is only half of that of manual arc welding and submerged arc welding.

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