L&L ships dual-chamber electric box furnace, quench tank

The L&L model QDS124 has two chambers.

L&L Special Furnace Co., Inc., shipped a dual-chamber heat treating and temper furnace along with an oil quench tank to a leading Eastern European ammunition manufacturer.

The equipment will play a supportive role in keeping key production equipment on-line along with thermal processing of munitions projectiles. The project was brought to L&L by Kevin Brennan of Summit Associates, a long-standing sales representative for L&L.

The L&L model QDS124 has two chambers. The top chamber, rated to 2,350°F, is used for heat treating various steels and other non-ferrous materials. The bottom chamber, which is rated for 1,250°F, includes a recirculation fan and baffle for tempering, stress relief, or pre-heating.

The effective work zone of the top chamber is 10” high by 11” wide by 22” deep, with the tempering chamber work zone being 10” high by 10” wide by 20” deep. The furnace is controlled by Eurotherm controls with overtemperature protection. The top and bottom chambers are sealed for use with inert atmosphere and include a manual flowmeter/regulator system for both chambers. Solid-state relays drive the heating circuits and are housed in a side-mounted NEMA1 panel. The furnace was painted with custom colors to match the customer’s existing equipment.

Shipped with the furnace was an accompanying QTO1224 oil quench tank. The quench tank has a working size of 12” high by 12” across by 24” deep and holds 65 gallons of oil. Included is a hinged safety lid, immersion-style heater with thermostat, and an agitator with explosion-proof motor for use with oil. Provisions are provided for additional oil to the air cooler if needed. The quench tank and furnace are NFPA86-compliant for safety.

All L&L furnaces can be configured with various options and be specifically tailored to meet customers’ thermal needs. L&L also offers furnaces equipped with pyrometry packages to meet ASM2750F and soon-to-be-certified MedAccred guidelines.

Options include a variety of control and recorder configurations. A three-day, all-inclusive startup service is included with each system within the continental US and Canada.

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