Z308 cast iron electrode

Z308 in line with GB / T 10044 EZNi-1 AWS A5.15 ENi-CI quite ISO 1071-EC Description: Z308 is a welding pure nickel core, strong reduction of graphite coating of cast iron welding rod, welding, the weld pieces from time to preheat , good crack resistance and processability. Nickel is expensive, should be used only when other rods can not meet. AC and DC. Uses: thin pieces of cast iron welding and machining surfaces, such as engine blocks, machine guides, gear housing and other important gray cast iron. Deposited metal chemical composition (%) C Mn Si S Ni Fe Other elements of total guaranteed value ≤2.00 ≤1.00 ≤2.50 ≤ 0.030 ≥90 ≤8.00 ≤1.00 Example value 1.45 0.85 1.80 0.003 93.20 2.00 - Reference current (AC, DC + ) electrode diameter (mm) 2.5 3.2 4.0 5.0 Welding current (A) 50 ~ 100 70 ~ 120 110 ~ 180 160 ~ 190 Note:???? 1. Welding electrodes shall be subject about 150 ℃ baking 1h. 2. You can eliminate stress welding area by hammering the weld, to avoid cracks.