Surfacing repair workpiece: shield machine cutter head
Welding wire model: TM582 TM605
Welding wire diameter: 1.2-1.6
Welding method: gas shielding
Welding wire features:
TM556 wear-resistant welding wire is a gas shielded surfacing flux-cored welding wire, and the metallographic structure of the surfacing metal is martensite plus alloy carbide. Because the carbide has extremely high hardness, it has excellent wear resistance of wear-resistant materials. Compared with the manual electrode, it has the advantages of high welding efficiency, small welding deformation and low comprehensive cost.
Surfacing process:
1. Before welding, process the fatigue layer on the surface to be welded, and remove oil and other contaminants.
2. Preheat evenly before welding, use flame or ceramic heating pad, and the preheating temperature is 200~300℃.
3. Continuous welding is applied during welding, and the interlayer temperature is ≥200 °C.
