450V3900UF电子元件 全新螺丝脚电解电容器 450VDC YADACON 雅达康

The core is the metal core of the electrode. In order to ensure the quality of weld, there are strict regulati*** on the content of all kinds of metal elements in the welding core. Especially, there are strict restricti*** on harmful impurities (such as sulfur, phosphorus, etc.), and the quality of welding core metal should be superior to that of base metal. A ***ooth rod without a coating cannot be arc welded. This is because the arc stability is poor, spatter is very large, weld formation is not good. After a long period of practice, it is gradually found that the performance of the electrode is greatly improved by coating some mineral materials (that is, electrode coating) on the outside of the welding core.