Hardcarb 6600
Tungsten carbide hardfacing superalloy suitable for oxy-acetylene welding. The weld deposit contains coarse grained, sintered tungsten carbide grit that are homogeneously embedded in a ductile nickel-silver (Cu-Ni-Zn) matrix. This results in overlay deposits that are highly wear resistant with excellent cutting action and particularly suitable for use in drilling of earth and stone environments.
Weld deposit characteristics:
The weld deposit contains coarse grained, sintered tungsten carbide grit that are homogeneously embedded in a ductile nickel-silver (Cu-Ni-Zn) matrix. The overlay deposit from “rounded” grit is highly wear-resistant and particularly suitable for use in drilling of earth and stone environments. The “sharp-edge” grit creates an overlay perfectly suited for cutting action such as that required in fishing tools.
Hardcarb 6600 can be used to produce hardfaced deposits on nearly all types of steel and cast iron substrates.
Recommended uses and applications
Typical applications:
» downhole reamers, openers
» fishing tools
» stabilizers
» drill bits used in earth or stone environment
» casing cutters
» slurry paddles
» cutters for tunnel boring machine
Additional info
Anti-wear suitability
| Metal-to-Metal friction Metal surfaces in relative motion forced into contact with or without lubricant. Degradation by the formation of micro-welds between the contacting surfaces. | - |
| High pressure abrasion Wear by relative movement under pressure of mineral particles of suitable hardness, shape and texture to remove material from the metal surface, leaving superficial deformation. | - |
| Cavitation Tearing out of grains from the metal surface by the formation and implosion of bubbles in a liquid in rapid motion. | - |
| Mechanical fatigue Fatigue and formation of cracks in surface regions due to tribological stress cycles that result in the separation of material. | - |
| Thermal fatigue Cyclic exposure to high temperatures leading to permanent deformation by alternate expansion and contraction. Alteration of the structure and properties of the material. | - |
| Hot oxidation Creation of a poorly adhering oxide layer that reforms constantly. Degradation by loss of material thickness. | - |
Workability
| Work hardening Work hardening is the process of making a metal harder and stronger through plastic deformation. When a metal is plastically deformed, dislocations move and additional dislocations are generated. | |
| Edge retention Suitability for creating sharp edges and retaining them during operation. | |
| Machining Machinability is the ease with which a metal can be cut (machined) permitting the removal of the material with a satisfactory finish at low cost. | Not possible. Only grinding possible. |
