Welding Method:

TIG Welding: TIG welding is an arc welding process that uses a tungsten electrode under a protective gas atmosphere. The welding is accomplished by the melting electrode combining with the molten metal in the welding area.

HF Welding: HF welding is a welding method where two metal pieces are joined using a high-frequency oscillating electric current. This method is typically used in welding plastics and aluminum.

Applications:

TIG Welding: TIG welding is commonly preferred for welding metals like steel, stainless steel, titanium, and copper. It is frequently used in applications that require precise welding processes.

HF Welding: HF welding is used for specific applications such as joining plastic materials or welding aluminum parts. It is also used in the electronics industry.

Electrode Usage:

TIG Welding: TIG welding uses a tungsten electrode that does not melt itself. The electrode is used under a protective gas atmosphere, and the tip of the electrode provides heat to the welding pool.

HF Welding: HF welding can involve the use of a special electrode or the electrode itself can be applied to the workpieces. The tip of the electrode generates a high-frequency oscillating electric current, which melts the metal.

Precision and Control:

TIG Welding: TIG welding is a more precise and controlled welding method. It is preferred for thin materials and precision welding applications.

HF Welding: HF welding is typically used in larger industrial applications and does not require the same level of precision.

These differences are the key distinguishing features between TIG welding and HF welding. The choice of which welding method to use depends on the material to be welded, its thickness, and the application requirements.