One, depending on the nature of Hebei Machinery different electrode coating. Will be divided into acidic Welding electrodes and alkaline Welding electrodes Drug skin Welding electrodes containing large amounts of acidic oxide (TiO2, SiO2, etc.) is called acid electrode. Drug skin contains large amounts of alkaline oxide (CaO, Na2O, etc.) is called alkaline electrode. Acid electrode can be AC and DC. Better welding performance. However, the mechanical properties of the weld. Especially the impact toughness is poor. Suitable for general low-carbon steel and low strength low-alloy structural steel welding. Is the most widely used Welding electrodes. Alkaline electrode desulfurization, dephosphorization strong ability. There dehydrogenase drug skin effect. Welded joints hydrogen content is very low. It is also known as low-hydrogen electrodes. Alkaline electrode welds with good crack resistance and mechanical properties. But the process is poor performance, general welding using DC power, mainly for important structures (such as boilers, pressure vessels and alloy structural steel, etc.) welding.
