Laser Cladding For Remanufacturing and Repair
Laser cladding is an additive manufacturing (AM) and remanufacturing process which uses lasers for the heat source. Laser cladding features ultra thin, low dilution overlay much smoother than conventional welding processes or PTA. Due to the precision heat application of laser cladding, it produces significantly lower and in many cases, virtually zero heat distortion. Final post cladding machining to clean up is fast and easy. Preheating parts is reduced significantly or completely eliminated with laser cladding. Laser cladding allows the fastest turnaround time so customers are not waiting for their remanufactured or repaired components.
Developed in the 1980’s as part of the Strategic Defense Initiative (SDI, also known as Star Wars Defense), laser cladding and heat treating is just now becoming widely used in industrial applications. Laser cladding is very popular in chemicals and plastics (CPI), pulp and paper, refineries, oil field, agriculture and mining to name a few industries which have embraced the benefits of laser cladding.
Laser cladding can be applied to most base metals including stainless steel 300 and 400 series), carbon steel, cast iron and ductile iron.
Let us engineer the right cladding material for your parts. The right cladding material depends on the application. Our engineers can recommend the most economical solution based on your specific needs. Common laser clad materials include: 316, 410 and 420 stainless steels, nickel and cobalt based alloys like Inconel® 625, Hastelloy® C276, Stellite® 6 and 12. Also tungsten carbide, iron carbide, chrome carbide and various cermets which are great for wear resistance.
Common CPI Reman and Repair Laser Components
Laser Heat Treating
Laser heat treating is a precision heat treating process. No need to heat the entire part if only a section of the part needs to be hardened. Laser heat treating is self-quenching, no quenching oils or fluids are necessary most of the time. The part acts as a heat sink quickly removing the heat from the surface of the part to harden the part up to 2 mm deep, case depth. Heat distortion is virtually nonexistent with laser heat treating. Frequently, parts can be machined to final dimensions, heat treated and installed back into service.
Depending on the carbon content of the steel component case depths to 2 mm and hardness up to 58 Rc have been achieved. Make parts last longer and reduce downtime.
Common Laser Heat Treated Parts include:
Stellite is a registered trade mark of Kennametal Corporation. Hastelloy is a registered trade mark of Haynes International.