Stop replacing expensive or long lead time components, save money and time by refurbishing them instead. Laser cladding is used to restore components to the original shape and size.
- Bearing fits can be returned to OEM specification putting an end to stocking of oversize or undersized mating parts and saving even more money, not to mention the surprises on quick turn-around repairs.
- Seal areas can be built back to nominal size as laser cladding allows thicker layers than chrome. The component can be rebuilt back to size and then chromed again or a chrome replacement material can be selected.
Several different materials can be used to return the component back to nominal dimensions and improve its performance over an OEM part, including nickel alloys, NiCrBSi alloys and stainless steels.
Component examples: Pump housings, heavy equipment shafts, suspension housings, and spindles.
For those looking for an environmentally friendly replacement to hard chroming, laser cladding can be used as a substitute in numerous applications. Group Six has developed a process that will achieve a pore free and crack free surface using a 400 series stainless steel alloy. Build ups are not limited to chrome thicknesses and can range from .010″ – .250″. With a heat affected zone (HAZ) in the range of .020″ to .060″ and essentially no dilution of the base material, distortion is minimized, and mechanical strength retained. This material can be machined on conventional equipment and can be polished to match surface finish requirements. In the case of electric motor components, there is the added advantage of not having to submerse the component in liquid.
Component examples: Gearbox shafts, hydraulic housings, electric motor armatures, pump housings.
Reduced maintenance interval, increased longevity, and lower replacement rates equates to money saved! Laser cladding can add materials such as tungsten carbide overlays, nickel alloys, cobalt alloys, iron based alloys, or stainless steels to improve the hardness of wear surfaces, resulting in extended life from abrasion and fluid erosion. This is one of the largest uses of laser cladding since the focused energy of the laser allows materials of different properties to be combined, such as applying tungsten carbide overlays on steel with a welded interface. The overlay has very little dilution and settling of carbide, the wear properties you want are throughout the entire thickness with essentially no mixing from the base material.
Component examples: Drilling and completion stabilizers, agricultural teeth or discs, centrifuge bowls, and pump impellers.
A weld overlay can be applied to resist corrosion from air, water, and acids, improving the longevity of equipment. The advantage over other types of coatings, such as chrome or HVOF, is that the overlay is metallurgically bonded to the base material, and produces a fully dense coating for complete protection. There is no risk of coating flaking off and exposing the base material.
When thinking of additive manufacturing processes, a multi-material component has the potential to be more cost effective than constructing the same part entirely out of a high cost alloy. A nickel overlay on a steel part versus a nickel alloy part for instance.
Types of materials: Nickel alloys, cobalt alloys, titanium, stainless steel
Component examples: Shafts, mixing propellers, pump shafts, and impellers.