Enrichment Heat Treatment

What is Enrichment Heat Treatment?

Enrichment heat treatment is a thermochemical process that improves material properties by adding specific elements to the surface of metals or alloys through diffusion. This process increases surface hardness, wear resistance, oxidation, and corrosion resistance.

How is Enrichment Heat Treatment Applied?

  • Preparation Stage: The metal surface is cleaned to remove oil, dirt, and oxide layers.
  • Diffusion Environment:
    • Can be performed in solid, liquid, or gas environments.
    • Elements such as carbon, nitrogen, boron, chromium, or aluminum are subjected to diffusion.
  • Heating and Holding:
    • The material is heated to a specific temperature (usually between 800-1100°C).
    • It is held at this temperature for a certain time to allow diffusion to occur.
  • Cooling:
    • The material is cooled in a controlled manner to acquire the desired mechanical and physical properties.

Types of Enrichment Heat Treatment

  • Carburizing: Surface hardening through carbon diffusion.
  • Nitriding: Increasing wear and fatigue resistance through nitrogen diffusion.
  • Boriding: Providing wear and oxidation resistance through boron diffusion.
  • Aluminizing: Increasing oxidation and corrosion resistance through aluminum diffusion.

Which Materials are Used?

Carbon steels
Alloy steels
Stainless steels
Cast irons
Titanium and its alloys
Anodization Heat Treatment

Main Sectors

Enrichment heat treatment significantly improves the mechanical and chemical durability of materials, providing efficiency and long service life in industrial applications.

  • Automotive: Engine components, gearboxes, crankshafts.
  • Aerospace: Parts resistant to high temperatures.
  • Machine and Tooling: Cutting tools, molds, and bearings.
  • Energy and Oil Industry: Equipment operating under high pressure and temperature.

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