Xuper DrillTec 8800 CB

Xuper DrillTec 8800 CB

Cast welding rod. Special CuZnNi-based brazing alloy matrix with embedded carbide particles. Tough matrix prevents the hard materials from breaking out. No mixing with the base material to be applied.

Technical data
DIN EN 14700: not classifiable
Soldering temperature: approx. 910 °C

Hard material grain size [mm] Marking
8800 CB 1632:.................1,6 - 3,2.......blue
8800 CB 3248:.................3,2 - 4,8.......green
8800 CB 4865:.................4,8 - 6,5.......yellow

Hardness
Matrix: 400 HV 30
Tungsten carbide: up to 2700 HV 1

Applications
For build-up welding of unalloyed, low-alloy and high-alloy steels, tool steels, corresponding cast steels, 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