Hardfacing Overlay Receiving Hopper
Hardfacing overlay receiving hopper is suitable for severe abrasive wear and moderate to low impact applications. The multiple-layer overlay is also capable of maintaining full wear resistance and the typical surface hardness at elevated temperatures up to 540°C (1000°F). It is available in single layers or multiple layers in overlay thickness.
Key Benefits
Same wear resistance guaranteed from surface down to 75% of the overlay Optimal carbide composition to provide good combination of wear resistance and homogenous bonding Good formability due to staggered cracking pattern on overlay surface
Typical Applications
Hard facing overlay receiving hopper is widely used in the mining, power generation, cement, dredging, steel production, waste handling, glass production, and pulp and paper industries. Some specific applications include:
Mining: Chutes/hoppers, liners for truck beds, dozer blades, shovel buckets, dragline buckets, excavators Cement: Separator guide vanes, discharge cones for clinker storage bins, chutes for sintering ore conveying, outlet ducts for clinker grinding mills, receiving hoppers Dredging: Dredging pipes and pumps, suction pipelines, pump discharges Steel: Fan blade/housings, coke vibrating screen plates.
Hard facing overlay receiving hopper is a form of surfacing that is applied for the purpose of reducing wear, abrasion, impact, erosion, galling, or cavitation. This article describes the deposition of hardfacing alloys by oxyfuel welding, various arc welding methods, laser welding, and thermal spray processes. It discusses the categories of hardfacing alloy, such as build-up alloys, metal-to-metal wear alloys, metal-to-earth abrasion alloys, tungsten carbides, and nonferrous alloys. A summary of the selection guide for hardfacing alloys is presented in a table. The article describes the procedures for stainless steel weld cladding and the factors influencing joint integrity in dissimilar metal joining. It concludes with a discussion on joining carbon and low-alloy steels to various dissimilar materials (both ferrous and nonferrous) by arc welding.
