Xuper AbraDur 7892 SH

Xuper AbraDur 7892 SH, Ø 8.0mm, 20.0kg 

Special welding filler material for autogenous cladding of corrosion-resistant and highly abrasion-resistant armor. The deposits consist of a tough NiCrBSi matrix mixed with extremely hard, spheroidal fused tungsten carbide. Very high abrasion resistance. Multi-layer applications up to approx. 18 mm thickness possible.

Technical data
DIN EN 14700: C Ni20
Soldering temperature: 1,050 °C

Hard material grain size: 0.3 - 0.6 mm
Carbide content: approx. 65 % by weight

Hardness
Matrix: 40 - 45 HRC
Tungsten carbide: 3,000 - 3,500 HV 0.1

Applications
For build-up welding of unalloyed, low-alloy and high-alloy steels, tool steels, corresponding cast steel, cast iron alloys and nickel-based alloys.

Typical applications are
Extremely hard, abrasion-resistant surfacing in corrosive media such as press and conveyor screws, ripper teeth, drill bits, crusher stars, rock drills, scraping and leveling knives and scrapers.

Processing instructions
Remove cracked or damaged material. Clean welding areas. Preheat the workpiece over a wide area or completely to 300 - 350 °C. At the start of the coating process, raise the preheating temperature locally to 600 - 700 °C. Melt off the filler metal during further heating to brazing temperature. To improve wetting and ensure even distribution of the tungsten carbides, keep the filler metal in contact with the base metal. When gas welding, set a neutral to reducing flame. Allow to cool in still air.

Welding positions: PA, PB