Answer: The welding rod tends to deteriorate the process performance due to moisture absorption, resulting in unstable arc, increased spatter, and defects such as pores and cracks. Therefore, the electrode must be strictly dried before use. Generally, the drying temperature of the acid electrode is 150-200 ° C for 1 hour; the drying temperature of the alkaline electrode is 350-400 ° C, the time is 1--2 hours, and the incubator is placed at 100--150 ° C after drying. Inside,Take it with you.