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Rotary Drum Furnace

Lindberg offers a wide range of electrically heated or gas-fired rotary drum furnaces suitable for processing small parts such as piston pins, ball bearing balls, small bearing races, universal joints, bolts, nuts, sheet metal screws, etc.. Systems can be built to include endothermic or exothermic protective atmospheres, discharge chute, water or oil quench tank with take out conveyor, part washer and/or draw furnace.

Features / Benefits

• Heavy gauge cast alloy retort with integral spiral
• Single piece support rings at each end of furnace that are carried on steel trunions mounted in high-grade anti-friction bearings
• Variable speed retort transmission
• Front charge cone is atmosphere sealed to the loading chute
• 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 electrically heated version
• 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 chute for quench

Options

• Carbon control with oxygen probe
• Gas flowmeters for dissociated ammonia or exothermic atmospheres
• Nitrogen-methanol atmosphere system
• Temperature control and recorder options
• Quench tank
• Quench tank exit conveyor
• Continuous companion washer and tempering equipment

Applications

• Carbonitriding
• Carburizing
• Hardening
• Normalizing