Gleichstromglühen

Gleichstromglühen, also known as DC arc welding, is a welding process that uses a direct current (DC) electrical arc to join metals. This process is commonly used in various industries, including automotive, construction, and manufacturing, due to its efficiency and versatility. The DC arc welding process involves the creation of an electrical arc between a consumable or non-consumable electrode and the workpiece. The heat generated by the arc melts the base metal and the electrode, forming a weld pool. The electrode is then fed into the weld pool, adding filler material to the joint.

DC arc welding can be further classified into two main types: direct current straight polarity (DCEP) and direct current reverse polarity (DCEN). In DCEP, the electrode is positively charged, and the workpiece is negatively charged. This configuration is typically used for welding thin materials and for welding with a consumable electrode. In DCEN, the electrode is negatively charged, and the workpiece is positively charged. This configuration is commonly used for welding thick materials and for welding with a non-consumable electrode.

The DC arc welding process offers several advantages, including high deposition rates, good penetration, and the ability to weld a wide range of materials. However, it also has some limitations, such as the need for a skilled operator to control the welding parameters and the potential for spatter and fumes. Despite these limitations, DC arc welding remains a popular welding process due to its efficiency and versatility.