How To Choose A Spot Welder

Make sure that the workpiece to be welded is ferrous metal. Generally, an AC spot welder is used. Because the AC spot welder uses AC discharge welding, it is especially suitable for materials with large resistance values. At the same time, the AC spot welder can use single pulse, multi-pulse signal, cycle, time, voltage, current, and program control methods to control the Welded workpieces are single-point, double-point continuous, automatically controlled, and manually controlled. Suitable for welding tungsten, molybdenum, iron, nickel, stainless steel and other metal pieces, rods and wires.

The disadvantages are:

1. It is greatly affected by the fluctuation of the grid voltage, that is, the welding current of the AC spot welder will fluctuate with the fluctuation of the grid voltage, thereby affecting the consistency of welding. 2. The shortest welding discharge of AC spot welding machine is usually 1/2 cycle or 0.01 second, which is not suitable for the high standard welding of some special alloy materials.

The advantages are:

1. Good comprehensive benefits and high cost performance.

2. Wide range of welding conditions.

3. Small and lightweight welding circuit.

4. Can dissimilar metals widely spot-welded.