L&L Special Furnace Co., Aston, Pa., announces that it has shipped a dual-chamber heat treating furnace that will harden tool steels in its upper chamber while its bottom chamber is used for tempering, stress relief, and pre-heating. The furnace was purchased by a manufacturer in the southeastern United States who processes various components used in the production of heavy machinery and transportation equipment.
The L&L model QD836 furnace’s hardening chamber has an effective work zone 16 inches wide by 16 inches high by 32 inches deep. The tempering chamber has an effective work zone 14 inches wide by 14 inches high by 32 inches deep. The top chamber has a uniformity of ±20° above 1200°F, and the bottom chamber has a uniformity of ±10°F from 300°F to 1250°F.
The furnace is controlled by Eurotherm temperature controls with overtemperature protection. Solid-state relays drive the electric heating elements and include heavy-duty, long-lasting 11 gauge thermocouples. All of L&L’s furnaces can be configured with various options and can be specifically tailored to meet thermal needs. L&L also offers furnaces equipped with pyrometry packages to meet ASM2750E and soon-to-be-certified MedAccred guidelines.
Options include a variety of control and recorder configurations. A three-day, all-inclusive startup service is available with each system within the continental United States and Canada. International startup and training service is available by factory quote.
