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How to select welding machine electrode? [DCS20]

Jan 04,2024

Three main factors of intermediate frequency welding are welding current, welding pressure and welding time. These three factors work well by good quality electrode. As one of the main parts, the electrode plays an important role in welding quality.

The electrode is responsible for transmitting welding current, welding pressure and heat dissipation. The electrode must be able to withstand the high temperature strength and hardness, because welding current goes through the electrode to produce a large amount of heat in the welding of the workpiece, the electrode itself has to withstand the high temperature of the welded workpiece.

How to select welding machine electrode?

In order to operate the welding equipment for a long life, the essential requirement on electrodes is excellent anti-deformation and anti-wear property. Electrode works as a medium to transmit current. Its ability to conduct electricity and heat must be perfect.

Excellent conductivity allows for complete current transfer to the workpiece, resulting in accurate current control. Small resistance heating of the electrode can quickly eliminate the heat from the welding area, so as to increase the electrode life and improve the heating state of the workpiece surface.

The electrode requirements mentioned above apply to common carbon steel, stainless steel parts.

But for welding aluminum and aluminum alloy, it is necessary to choose low conductivity electrode materials, such as red copper, copper chromium, etc. . However, due to low hardness at high temperature, it is possible to see electrode and welding metal product adhesion.