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
- 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.
- 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.
- 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
|3.5 x 350||70 – 90||99||396||50.5||5.0||20.0|
|4.0 x 350||80 – 100||66||264||75.9||5.0||20.0|
|5.0 x 350||100 – 120||42||167||119.6||5.0||20.0|