Industrial Tempering Furnace

Tempering Process

The tempering process is used to reduce the brittleness in hardened steel and to remove the internal strains caused by the sudden cooling in a quenching bath. During the tempering process the metal being treated is heated in a tempering furnace to a specified temperature for a period of time based on the desired level of hardness, strength, and ductility. Higher tempering temperatures will result in high ductility, but low strength and hardness. Lower tempering temperatures will result in low ductility, but high strength and hardness.

Lindberg Cyclone Box Furnace

Lindberg Cyclone Box Furnace

The rapid, uniform heating of the Cyclone Box Furnace has been proven in thousands of installations.  

Key Specifications

  • Temperature Range: to 1250°F
  • Optionally up to 1400°F
  • Electric or gas heat available
  • Temperature Uniformity of ±10°F or better

Lindberg Car Bottom Box Furnace

Lindberg Car Bottom Box Furnace

Lindberg/MPH manufactures fuel fired, electric powered and dual energy car bottom furnaces for batch processing large parts at temperature up to 2800°F. 

Key Specifications

  • Temperature Range: to 2800°F
  • Gas or electric heat available
  • Innovative and lightweight modular design for easy installation
  • Modular construction

Steam HOMO Pit Furnace

Steam HOMO Pit Furnace

Featuring a compact design, these units are ideal for direct production line installation. 

Key Specifications

  • Temperature Range: up to 1250°F
  • Steam or inert Atmosphere Capable
  • Lightweight ceramic module insulation
  • High reliability

HOMO Tempering Pit Furnace

HOMO Tempering Pit Furnace

The Lindberg HOMO® tempering furnace is an electrically heated pit style furnace capable of temperatures up to 1400°F. The furnace is top loading with a gasket-sealed work chamber. Heavy gauge alloy spiral heaters completely surround the work load providing high heat transfer efficiency.  

Key Specifications

  • Temperature Range: up to 1400°F
  • Dense load production capabilities with turbine-type fan and heavy duty motors
  • Proven components that deliver long service life
  • Inert or Combustible Atmosphere Capable

Cyclone Electric Pit Furnace

Cyclone Electric Pit Furnace

The cyclone pit furnace has been used for tempering, normalizing, solution treatment of aluminum and annealing for many decades. 

Key Specifications

  • Temperature Range: up to 1250°F
  • Uniformity: ± 10°F
  • Inert or Combustible Atmosphere Capable
  • High velocity recirculating fan

Cyclone Gas-Fired Pit Furnace

Cyclone Gas-Fired Pit Furnace

The cyclone pit furnace has been used for tempering, notmalizing, solution in treatment of aluminum and annealing for many decades.  

Key Specifications

  • Temperature Range: up to 1250°F
  • Uniformity: ±10°F
  • Inert or Combustible Atmosphere Capable
  • Complete, prewired, freestanding control panel with disconnect switch

Lindberg/MPH Companion Draw Furnace

Lindberg/MPH Companion Draw Furnace

Lindberg/MPH offers draw furnaces in fuel-fired or electric configurations for preheating, tempering and stress relieving. 

Key Specifications

  • Up to 1400°F temperature
  • Gas and Electric Options Available
  • Fast processing speeds
  • Magnetic proximity switch

Electronics Mesh Belt Conveyor Furnace

Electronics Mesh Belt Conveyor Furnace

High yields of uniform quality products. These highly efficient and economical furnaces are designed for atmosphere and nonatmosphere applications at temperatures up to 2100°F (1150°C). 

Available in: air-, inert-, or combustible-atmosphere models with ceramic fiber heating/insulation models.

Key Specifications

  • Temperature Range: up to 1100°C
  • Maximum energy efficiency and long service life
  • Control of belt speed, temperature, and atmosphere
  • Optional combustible atmosphere system