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Electric heated furnaces, kilns and lehrs

  • Bottom loading furnace for high termperature uniformity
  • Bottom drop furnace for solution heat treating of aluminum
  • Shuttle kiln for solid oxide fuel cells (ceramic wafers)
  • Small electric heated batch envelope kiln for advanced materials
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Keith Company's electric furnaces with metallic, silicon carbide or molybdenum disilicide heating elements are suitable for a wide range of applications, and for temperatures from 300°F to 3300°F. These furnaces are commonly used for metal heat-treating in air or protective atmospheres, ingot preheating before forging, wax burnout and mold pre-heating, calcining, ceramic firing, heat processing of ceramic matrix composites (CMC), carbon-composite materials, and many other processes.

The reasons for choosing an electric heated furnace over a gas heated furnace are based on economic considerations and application-driven requirements. Economic considerations are mainly the size of the furnace, initial investment and energy costs. Application driven requirements are, among others, eliminating risks of cross contamination, product sensitivity to heating element materials or gaseous products of combustion and heating and cooling profile. AQMD requirements regarding low NOx gas burners may also force the use of electrically heated thermal processing equipment.

Advantages of electric heated furnaces:

  • Clean and quiet; no burner exhaust or noise
  • Rapid heat up and cool down
  • Rugged, reliable, and economical construction
  • Maximum energy efficiency
  • Available for use with inert atmospheres

Furnace Types

Keith Company is one of the industry’s leading industrial furnace manufacturers. Contact us today to order the electric box furnaces, electric lehrs, or other thermal processing equipment you need.