High Uniformity, Dual Chamber Box Furnace

L&L Special Furnace has manufactured a high uniformity, dual chamber box furnace used for solution heat treating of aluminum components and subassemblies for the aerospace industry. The dual chamber model DCA was supplied to a major airline repair facility located in the southeastern US.

FEATURES

The bottom chamber is a high temperature chamber designed to operate at 400-1,100ºF, and is primarily used for solution heat treating and annealing. The top chamber is designed to operate at 200-500ºF for aluminum aging. A rollaway quench tank is located under the furnace, which allows for quickly quenching loads in water.

The primary controls are UDC3200 program controls, and there are UDC1200 over temperature protection systems with backup contactors for both chambers.

Each chamber has an alarm to notify the operator that the cycle is complete. The top chamber features a Honeywell DR450AT single input circular chart recorder. The bottom chamber is equipped with a dual input DR450AT circular chart recorder. This allows for the recording of the bottom chamber and quench tank temperatures. Each chamber has three thermocouples, one for temperature control, one for over temperature control and one for recording temperatures. The quench tank has one type J thermocouple for recording the temperature of the quench solution.

The furnaces have a work envelope of 18” wide by 12” high by 72” deep. There are other sizes available.