D102 in line with GB / T 984 EDPMn2-03 D106 GB / T 984 EDPMn2-16 D107 GB / T 984 EDPMn2-15 Description: D102 titanium calcium type coating ordinary manganese welding electrodes, AC and DC, surfacing arc stability, easy slag removal. D106 is a low hydrogen potassium type coating ordinary manganese welding electrodes, AC and DC, AC no load voltage is greater than 70V. D107 is a low hydrogen sodium type coating ordinary manganese welding electrodes, DC reverse. Uses: Used to weld or repair of low carbon steel, medium carbon steel and low alloy steel wear parts of the surface, such as axles, gears and mixer blades. Deposited metal chemical composition (%) C Mn Guaranteed value ≤0.20 ≤3.50 cases 0.14 3.10 Surfacing layer hardness: HB≥220 reference current (D102 AC, DC) (D106 AC, DC +) (D107 DC +) Electrode Diameter (mm ) f3.2 f4.0 f5.0 welding current (A) 90 ~ 110 140 ~ 180 180 ~ 220 Note: 1. D102 before welding electrodes shall be subject to about 250 ℃ baking 1h, D106, D107 before welding electrodes shall be 300 -350 ℃ baking 1h. 2. In large parts before welding should be preheated to about 200 ℃, and the welding surface portion of the iron embroidery and oil removed.