Laser welding hard facing

Most of wear, corrosion, fatigue cracks that can cause to equipment failure initially originates on surface area and might be managed by features of thin surface layer. Laser welding is one of most common methods of creating cladding to adjust surface features as well as parts renew and repair. This can serve as optimal solution to balance surface cladding features and material amount, there is no need to use full volume of alloy material and improve parts reliability and durability at minimum cost.

Laser hard facing is process of cladding when material extender powder applied to melted material of surface at minimum welded depth. Cladding features can be managed by powder material properties. Welding process with minimum surface propagation and controlled heating deliver high adhesion to surface and minimum porosity.

Laser hard facing advantages in part's repair:

  • 100% process automation;
  • automation control of welding parameters;
  • minimum heat impact;
  • cladding hardness up to 70 HRC;
  • high adhesion of hard facing material;
  • minimal depth and percentage of extender material mixture to base;
  • reduce strain and deformation;
  • minimal welding depth;
  • no heat tretment requirements prior hard facing;
  • low cost because of minimum amount of hard facing material.

Laser hard facing application examples:

  • repair and hard facing of MWD parts;
  • repair of press-form;
  • repair of turbine blades;
  • remedial and hard facing of drilling and energy tools (stabilizers, centralizers, reamers, baldes, bushes and etc);
  • hard facing of rock, construction, agricultural tools;
  • recover of shaft and other parts geometry and etc.
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