Hardfacing Mig Welding Wires

What advantages do metal cored Hard facing MIG wires offer over solid?

1. Metal cored hardfacing wires, such us as UTP's Robotic 600 Chromeless wire offer reduced spatter, smooth wetting and are considered more welder friendly than solid wires.
2. Flux cored's stable arc lowers the defect rate and reduces post weld clean up, with wires offering up to 30% increase in the weld deposit.
3. The outer metallic sheath of the wire conducts electrical current for welding. Because of the composite nature of cored wires, their current carrying density is greater, which improves the deposition rates at equal current levels when compared to solid wires. This results in a ball transfer of cored wire that disperses larger metal drops or balls, this type of transfer promoting low penetration & dilution suitable for hard facing. With less dilution, higher weld metal hardness is achieved.
4. A seamless design a copper coated surface provides excellent arc stability and resistance to porosity and rust formation.

In the case of the UTP Chromeless product, the removal of chrome & nickel, means there is a reduction in hazardous welding fume particulate of up to 40%, compared to a solid wire.

HF350 versus HF600 grade Hard facing MIG wire

1. Hard facing 350 has greater impact resistance and is fully machinable, where as the HF600 is not. Hardfacing 600 is grind only. 
2. HF350 can be deposited layer upon layer, potentially offering greater hardness than a HF600 or HF960 wire.
3. Typically, you would select a HF600 wire, for good level abrasion resistance and the overlaying of wear resistant parts, such as digger teeth.

.