Steel welding electrode W707

rodcoated

Low-temperature steel electrodes mainly refer to structures used for working at low temperatures, and have strict requirements on the low-temperature toughness of weld metal. Therefore, it is generally required that the electrode strips are of a low hydrogen type, and in the deposited metal, a certain dose of nickel is often added to improve the low temperature toughness. The electrode consists of two parts: the core and the coating. The electrode is coated on the core uniformly and centripetally with the coating (coating) outside the metal core. The welding rods are different depending on the type of electrode. The core of the welding rod is the metal core of the welding rod. In order to ensure the quality and performance of the welding seam, the content of each metal element in the welding core is strictly regulated, especially for the content of harmful impurities (such as sulfur, phosphorus, etc.). The limit is better than the base metal. The metal core covered by the coating in the electrode is called a core. The core is generally a steel wire of a certain length and diameter. When welding, the core has two functions: one is to conduct welding current, the arc is used to convert electrical energy into heat, and the other is that the core itself is melted as a filler metal and the liquid base metal is fused to form a weld.