Tempering Furnaces

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.

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

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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

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Steam HOMO® Pit Furnace

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

Key Features

• Temperature Range: up to 1250°F

• Steam or inert Atmosphere Capable

• Lightweight ceramic module insulation

• High reliability

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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 Features

• 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

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Cyclone Electric Pit Furnace

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

Key Features

• Temperature Range: up to 1250°F

• Uniformity: ± 10°F

• Inert or Combustible Atmosphere Capable

• High velocity recirculating fan

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Cyclone Gas-Fired Pit Furnace

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

Key Features

• Temperature Range: up to 1250°F

• Uniformity: ± 10°F

• Inert or Combustible Atmosphere Capable

• Complete, prewired, freestanding control panel with disconnect switch

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Companion Draw Furnace

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

Key Features

• Up to 1400°F temperature

• Gas and Electric Options Available

• Fast processing speeds

• Magnetic proximity switch

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Electronics Mesh Belt Conveyor Furnace

The open-chamber design provides a simple, effective furnace for copper brazing. The full muffle design provides superior temperature uniformity, reduced atmosphere gas usage, and even more flexibility in creating specific temperature profiles.

Key Specifications

• Temperature Range: 1300°F to 2100°F

• Belt widths available: 4" to 36"

• Three different styles: open chamber, full muffle, full muffle with pre-heat

• Optional atmosphere gas blending and mass-flow controls

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