The method of choosing covered electrode is as follows:
There are many kinds of 1 and covered electrode, which need to be selected according to the strength first, which conforms to the covered electrode property of wood and has certain weldability.
2. When selecting, it is also necessary to pay attention to the fact that the core components should conform to the parent material. For example, steel contains harmful substance phosphorus. If it is relatively high, covered electrode with better crack resistance or porosity resistance should be selected. It is suggested to choose titanium oxide covered electrode. If it can't be solved, you can also choose covered electrode with low cyanide.
3. It is also necessary to consider the current welding environment, including service performance and impact resistance. If contact with corrosive substances is required, the current working temperature must be taken into account, and a suitable stainless steel covered electrode must be selected.