Electric Dual-Chamber Box Furnace
May 1, 2025
L&L Special Furnace Co. has shipped a model QDD29 economical dual-chamber heat-treating and tempering oven to an equipment provider located in the Midwest. The furnace will ultimately be installed in a snap-on tool production facility servicing tool and die support within the company's production line.
The smallest of L&L's dual-chamber furnaces, the QDD series is suited for various thermal applications. Its compact over/under design saves floor space and provides reliable heat treating without the delays of third-party vendors, shipping costs and transit holdups.
The top chamber is primarily deployed for heat-treating tool steels at temperatures up to 2,200 °F; the tempering chamber is suited to temperatures up to 1,250 °F and has a recirculation baffle that makes it suitable for small aluminum work as well. The hardening and tempering chambers have interior dimensions of 12" W x 8" H x 24" D, with total external dimensions of 55" W x 70" H x 56" D.
The QDD29 is controlled with digital single setpoint controls along with overtemperature protection. Solid-state relays drive the heating elements in a simple control circuit.
All L&L Special Furnace machines can be configured with various options and be specifically tailored to solve individual thermal needs. The company also offers furnaces equipped with pyrometry packages to meet the latest ASM2750 specifications.
Options include a variety of control and recorder configurations. An optional three-day, all-inclusive startup service is available with each system in the continental U.S. and Canada.
For more information contact:
L&L Special Furnace Co., Inc.
20 Kent Road
Aston, PA 19014
610-459-9216
sales@llfurnace.com
www.llfurnace.com
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