Product description

D707 Wear-Resistant Electrode (EDW-A-15) is a low-hydrogen sodium-coated carbon steel electrode with tungsten carbide-infused coating. Designed for rebuilding rock-abrasion components in mining/construction machinery, including:

• Concrete mixer blades

• Bulldozer blades

• Dredger cutter heads

Key Properties:

• Tungsten content: 40–50% in deposit → HRC ≥65

• AC/DC compatible (DC+ recommended)

Low-Current Advantage: Minimizes coating spallation, ideal for high-wear parts in:

• Brick/tile plants (mixer shafts, crusher hammers)

• Cement plants (grinding rolls, jaw plates)

• Mining (dredge buckets, drill bits)

• Steel mills (bells, hoppers)

• Agriculture (cultivator blades, stalk shredders)

Applications: Rebuild components enduring severe rock abrasion, e.g.:

• Pump impellers

• High-speed sand mixers

• Wood charcoal pushers

• Sugar/paper mill wear parts

Available Diameter (mm): 3.2 / 4.0 / 5.0

Mechanical Performance of Deposit Metal

HRC≥65

Chemical Composition (%)

Welding Parameters

Current Polarity: DC+ / AC

Pre-Weld Protocols:

1. Baking: 300–350°C × 1h

2. Preheat:

• Carbon steel: ≥300°C

• Low-alloy steel: 400–500°C

• Stainless steel: 600–650°C

3. Post-Weld Annealing: 700°C (mandatory for low-alloy/stainless steels)