Who knows the characteristics of manual arc welding?

Manual arc welding uses various methods to protect the welding pool from the atmosphere. Thermal energy is provided by electric arc. Like MIG welding, covered electrode is consumable. The metal electrode is coated with mineral flux, and when the flux melts, welding slag (coating) is formed to cover the welding pool. The coated flux releases gas to protect the welding pool and contains alloying elements to compensate the alloy loss of the alloy pool.

Manual arc welding is an arc welding method using manual covered electrode, which is called manual arc welding for short.

Coated covered electrode and weldment are two kinds of covered electrode, and the welded metal is called weldment or base metal. During welding, due to the high temperature and blowing force of the arc, the weldment is partially melted. An oval pit filled with liquid metal is formed on the welding metal, and this pit is called a molten pool. As covered electrode moves, the molten pool cools and solidifies to form a weld. A layer of slag shell covering the weld surface is called slag. The distance from the melting end of covered electrode to the surface of molten pool is called arc length. The distance from the surface of weldment to the bottom of molten pool is called penetration.

trait

1, simple equipment.

2. Flexible and convenient operation.

3. All-position welding can be carried out, which is suitable for welding of various materials.

4. Disadvantages are low production efficiency and high labor intensity.