Shandong Gold Ge brand specializing in the production of welding consumables D708, tungsten welding electrodes Model: EDW-A-15 cladding layer hardness HRC≥65 D708 graphite coating tungsten welding electrodes, rely on over-medicated skin tungsten carbide alloy, heap weld metal tungsten 40% -50%, AC and DC. The rod is mainly used by the intense wear of mechanical parts, such as concrete mixing blades, bulldozers and pump blades, excavator blade, high-speed sand box, brick auger, the roller, bow crusher, hammer plate, fan impeller , liner, grate kiln towers, roller press, cone crusher and other components. Deposited metal chemical composition (%) C 1.50 ~ 3.00 Mn ≤2.00 Si≤4.00 W 40-50 Reference current (AC, DC +) electrode diameter (mm) φ3.2: 70 ~ 120 φ4.0: 140 ~ 180 φ5. 0: 180 to 230 Note: 1. 300-350 ℃ before welding electrodes shall be baked 1h. 2. When the carbon steel welding preheat temperature above 300 ℃, welding low alloy steel parts for the preheating temperature of 400-500 ℃, when welding stainless steel parts for the preheating temperature of 600-650 ℃. 3. Low alloy steel and stainless steel after welding shall be 700 ℃ annealing.