The so-called electric arc is a strong and long-lasting discharge phenomenon in the gas medium between the two electrodes, which is called an electric arc. When the arc discharges, high temperatures are generated on the one hand, and strong light is generated at the same time. The arc welding is a high-temperature melting electrode and a weldment produced by arc welding. The two separate metals are fused together to obtain a firm joint.
The so-called manual arc welding is an abbreviation of manual arc welding, and is an arc welding method that uses a manual operation of the electrode to perform welding. The characteristics of hand arc welding: 1) The equipment is simple; 2) The operation is flexible and convenient; 3) It is possible to conduct all-position welding suitable for welding a variety of materials; 4) The production efficiency is low and labor intensity is high.
Hand arc welding working principle: The electrode and the weldment are used as the two electrodes. During the welding, due to the high temperature of the arc and the blowing force, the weldment is partially melted to achieve the purpose of welding. As the electrode moves, the weld pool cools and solidifies to form a weld. The layer of slag covered by the weld surface is called slag. An oval-shaped, liquid-filled pit is formed on the metal to be welded and is referred to as a bath. The distance from the melting end of the electrode to the surface of the bath is called the arc length. The distance from the surface of the weldment to the bottom of the pool is called the penetration depth. Hand arc welding process is currently the most widely used welding process, and is also the basis of other welding methods.
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