CARBO DURIT E – 4 mm

Description

Carbo Durit E – 4 mm

• Standards DIN 8555 E21-GF-UM-60-GP
• DIN EN 14700 E Fe20
• Welding positions PA, PB
• Flux-cored wire equivalent CARBO F- Durit Fe

Characteristics

• CARBO DURIT E is a steel tube filled with fused tungsten carbides.
• It is a dip-coated electrode suitable form Manual Arc [MMA] welding on AC as well as on DC.
• The weld metal consists in a tungsten-steel-matrix with embedded tungsten carbides.
• The extraordinary hardness of the fused tungsten carbides (WSC) of approx. 2300 HV imply the high build-up wear resistance.
• The carbon content of the base metal should not exceed 0,45 % in order to avoid lack of fusion. However, the base material should have enough strength to avoid the penetration of the build-up in the base material.

Typical applications

• Hardfacing of tools and machine parts in the mining,
• Road construction, well digging, civil engineering,
• Deep drilling technology, where strongest abrasion by minerals may occur.

Recommendations

• To get the best results the welding areas should be properly cleaned of rust, grease, soil and similar pollutions.
• Preheating to 350-500°C is recommended.
• The lowest possible welding current should be used to avoid the melting of the carbide particles.
• The selection of the grain size and the rod diameter depend on the application and the size of the tool to be hard faced.
• Lower particle sizes are recommended when the wear from abrasion is dominant, bigger sizes for tool cutting faces for superior cutting results.

Mechanical properties of all-weld metal ( typical values )

Hardness of fused tungsten carbide HV: > 2300

Weld metal analysis (typical, wt. %)

• Fe: 40%
• WSC: 60%
• Current: + / ~ 50 V

Technical Details: