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Rotary Hearth Furnace
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Rotary Hearth Furnace
Lindberg offers a wide range of electrically heated or gas-fired rotary
hearth furnaces that are suitable for continuously hardening such parts
as gears requiring press quenching, or pre-heating copper, brass, and
bronze slugs and billets prior to forging or impact extrusion. Temperature
range to 2500°F.
Features / Benefits
- Variable speed
- Fabricated continuously welded and reinforced steel
shell
- Single ended recuperative radiant tubes on gas-fired version
- Low watt-density
rod overbend elements with round cross-section for excellent long-term
stability with minimal resistance change on
1850°F
electrically heated version
- Silicon carbide heating elements are
utilized on 2500°F electrically
heated version. The elements are mounted vertically around
the outer wall of the furnace. Terminal connections in an enclosed box below
the furnace. Elements are removable from the top of the furnace.
- Complete,
pre-wired NEMA 12 control panel with disconnect switch
- Excess temperature
instrument
- Designed to meet FM, IRI, OSHA, and NFPA requirements
- Endothermic
gas atmosphere system standard
- Alloy or silicon carbide hearth plates
depending type of furnace and temperature
- Endothermic gas atmosphere
system standard
- Water-cooled oil seal at the hearth
- Pneumatically operated door(s)
- High alloy recirculating fan on low
temperature furnaces
Options
- Temperature control
- Recorder
- Carbon control with oxygen probe
- Gas flowmeters for dissociated ammonia
or exothermic atmospheres
- Nitrogen-methanol atmosphere system
Applications
- Hardening
- Pre-heating
- Normalizing
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