What is hardening? Bluewater’s hardening methods enlist a wide variety of heat treatment techniques in which we increase the hardness, strength, and fatigue life of metal parts and components via surface hardening and through hardening. There are several different methods and types of equipment that can be used to neutral harden or case harden small lots to high production volumes of metal components.

Heat Treatment methods:

  • Neutral hardening in batch furnaces (small to medium volume work)
  • Neutral hardening in continuous furnaces (large production volume work)
  • Neutral hardening in saltbath furnaces (oil or salt hardening tool steels or medium to high carbon steels)
  • Neutral hardening in vacuum furnaces (gas quenching materials like tool steels and martensitic stainless steels)
  • Open fire hardening in furnaces without protective atmosphere (raw materials like bars, forgings and castings)
  • Surface diffusion case hardening methods which include carburizing, carbonitriding, nitriding, and nitrocarburizing
  • Induction hardening for selective hardening or selective surface case hardening
  • Solution treatment and age Hardening (PH stainless steels, aluminum, titanium, nickel-based superalloys)

Hardening Applications

  • Tools
  • Dies
  • Bearings
  • Turbine blades
  • Gears
  • Shafts
  • Rollers
  • Pins
  • Bushings

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