The electrode is a metal strip that melts and fills the joint of the welding workpiece during gas welding or electric welding.The material of welding rod is usually the same as that of workpiece.The welding rod is to evenly and centripetally apply the coating (coating) on the metal core.The welding core is the metal core of the welding rod. In order to ensure the quality and performance of the weld, there are strict regulations on the content of each metal element in the welding core, especially the content of harmful impurities (such as sulfur, phosphorus, etc.), which should be strictly limited and superior to the base metal.The welding rod is composed of welding core and coating.The types of cores are different.The composition of the welding core directly affects the composition and performance of the weld metal, so the harmful elements in the welding core should be as few as possible.
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