Industrial Stress Relieving Furnace

Stress Relieving Process

Metal stress occurs from steel processing methods such as cutting, machining, and forging. The heat treat process of stress relieving is a time and temperature dependent process that relieves the stresses created by these methods. A stress relieving furnace is used to apply heat to a product which reduces residual stress in the material and decreases the risk of dimensional changes.

Car Bottom Box Furnace

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

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

Roller Hearth Furnace

Roller Hearth Furnace

These roller hearth furnaces are designed for annealing, brazing, sintering, stress relieving, normalizing, tempering, hardening and other applications that require process temperatures up to 2050°F (1121°C). The roller hearth furnaces can be furnished in various widths and load-handling capabilities. Combination preheat and high heat zones are available for brazing applications.

Key Specifications

  • Complete, systems ready for operation
  • Easy and safe operation and process repeatability
  • Convenient access to controls and maintenance items
  • Optional programmable controller(s)

Rod Overbend Box Furnace

Rod Overbend Box Furnace

The Rod Overbend (RO) electric box furnace gives you flexible, efficient performance in a variety of heat treating applications.  

Key Specifications

  • Temperature Range: to 2000°F
  • Atmosphere Capable
  • Fast heating rate
  • Exothermic, dissociated ammonia, or nitrogen atmosphere systems

Rod Overbend Pit Furnace

Rod Overbend Pit Furnace

The Rod Overbend (RO) pit furnace gives you flexible, efficient performance in a variety of heat treat applications including annealing, normalizing and hardening at temperatures up to 1850°F (2000°F optional). 

Key Specifications

  • Temperature Range: to 1850°F
  • Inert or Combustible Atmosphere Capable
  • Standard endothermic atmosphere system
  • Easy-loading vertical chamber