A welder works on the principle of the process of using electrical energy to weld two objects together. The welding machine is mainly composed of a power supply, a welding electrode, and a welding material.
The power supply of the welding machine is usually a DC power supply, which converts electrical energy into arc energy. The welding electrode receives the power source and heats the welding material to a molten state through an electric arc The melting of the welding material forms a molten pool that cools and solidifies rapidly, thus firmly welding the two objects together.
During the operation of the welding machine, the power supply is stopped before the welding electrode leaves the welding material, and the arc formed is extinguished. This process, often referred to as the “power-off moment,” helps the weld pool cool down and lowers the temperature during the welding process.
The welder can also control the quality of the weld by regulating the current and voltage. Higher currents are typically used for large welding tasks, while lower currents are suitable for small welding jobs. Adjusting the voltage can affect the length and stability of the arc and thus the quality of the welding results.
In general, a welder welds two objects by using electrical energy to create an electric arc. The firmness and quality of the weld depends on factors such as current, voltage, and material selection.
Post time: Mar-15-2025