Carbon steel electrode ( the deposited metal tensile strength that is less than or equal 500MPa 50kgf/mm2) for Cast Iron Welding Rodsteel and low-strength low-alloy steel welding .For low-hydrogen , iron powder type electrode , before welding electrodes must be above 350 ℃ baking , as far as possible to do with the use of baking , bake with how much of the originalThen , otherwise it will produce welding defects ( such as pores , slag , cracks, deterioration of process performance , etc. ) . Cellulose type electrode , should be strictly supposedlyMing proviso baking baking temperature , the temperature is too high , it will burn off the coating of cellulose destruction inherent in welding process performance .The use of low hydrogen type electrode , the welder should live upwind strengthen exhaust, welding fumes prevent harm to the body . For low hydrogen type electrode baking times its not more than twice as much as possible , to prevent drug skin brittle and fall off