1. Definition and working principle

DC spot welder is a welding device that uses direct current for spot welding. DC spot welding medium frequency converts the input alternating current into direct current and outputs a stable direct current welding current to realize the spot welding operation on the workpiece. During the welding process, the workpiece is placed between two electrodes, and the contact surface of the workpiece is melted and combined together by applying a certain pressure and direct current.

2. Main advantages

Stable nugget formation: The DC spot welder outputs a stable direct current welding current, so that a stable nugget can be formed during the welding process. Since the direct current has no current spikes and is not easy to produce spatter, the upper limit of the current allowed is large, which can ensure the welding quality.

Extend the life of the electrode: During DC welding, the current is stable and there is no current spike, which avoids the mechanical impact of the current on the electrode, thereby extending the service life of the electrode.

Reduce electromagnetic influence: Compared with the AC spot welder machine, the DC inverter welding machine generates less electromagnetic influence during the welding process, making the welding process more stable and less susceptible to external interference.

Uniform heating: During the welding process, the DC portable metal spot welding machine can ensure that the welding current is more evenly distributed on different weldment thicknesses, and the heating is also more uniform, thereby improving the welding quality.

Wide applicability: DC high-efficiency welding equipment for resistance has wide applicability and can weld various metal materials, such as low carbon steel, stainless steel, aluminum alloy, etc. At the same time, resistor welding machine is also suitable for welding workpieces of different thicknesses and shapes, and has strong versatility.

3. Application fields

DC wire terminal resistance welding is widely used in production lines in automobile, home appliance, hardware and other industries. In the field of automobile manufacturing, spot welding machine with pedal is used for welding parts such as body and chassis; in the home appliance industry, spot welding machine is used for the production of refrigerators, washing machines, air conditioners and other products; in the hardware industry, dc spot welding machine is used for welding various metal parts.

In summary, DC spot welding machine plays an important role in industrial production with its high efficiency, stability and strong applicability.