HAH provides hard facing services, a process applied to new parts during production to increase wear resistance or restore a worn-down surface. Hard facing by arc welding is a surfacing operation aimed at extending the service life of industrial components, either preemptively on new components or as part of a maintenance program.

Hard Facing Applications:

• HF 1000:

  • Crushed tungsten carbide held in a nickel-bronze matrix.
  • 3mm grain size ensures a greater concentration of carbide.
  • Ideal for drilling soft formations.

• HF 2000:

  • Trapezoidal tungsten carbide inserts held in a sintered carbide nickel bronze matrix.
  • Provides great depth of carbide coverage.
  • Ideal for high deviation drilling in abrasive formations.

• HF 3000:

  • Tungsten carbide inserts set in a powder spray deposit.
  • 97% bonding guaranteed, certified by ultrasonic report.
  • Recommended for non-magnetic stabilizers; ideal for abrasive formations.

• HF 4000:

  • Tungsten carbide inserts (button type) developed for cold insertion.
  • Greater concentration of inserts on the bottom third of the blade and leading edge to increase surface contact.
  • Ideal for highly abrasive formations.

• HF 5000:

  • Oxy-acetylene process applies tough molten carbide particles of varying sizes held in a nickel chrome matrix.
  • Provides excellent bonding properties and achieves greater surface wear characteristics.
  • Surface hardness levels over 40 HRC.

• HF 6000:

  • Highly automated process utilizing a combined arc/plasma stream on the workpiece surface.
  • Results in low base metal dilution and a dense, uniform coating.
  • The filling medium can be a variety of hard-facing consumables.