Pacemaker Companion
Draw Furnace
Base Model

Larger image

Lindberg Companion Draw furnaces are designed to provide fast processing speeds and total flexibility in a modular heat treating system. Both gas and electric draw furnaces offer optimum production efficiencies when used in conjunction with Lindberg Pacemaker® furnace systems, whether in-out, straight-through or two-chamber configurations. These versatile draw furnaces also deliver excellent results when used with other heat treating systems. Electric units operate on 230/460V, 60 Hz. power supply. Gas units operate on 8 oz. natural gas pressure (1050 BTU/CF) or propane mixture.

Features / Benefits

Exclusive to Electric Models

• Incoloy-sheathed heating elements are shielded from directly radiating on the workload by the stainless steel circulation baffles. They are mounted in the roof plugs and are easily serviceable from the furnace exterior.
• An SCR controller with time proportioning output regulates the element contactor. An excess temperature cutoff instrument is connected to a standard backup contactor.

Exclusive to Gas-fired Models

• An excess air burner fires into an open tube through the upper rear wall of the furnace. The burner flame is shielded from directly radiating on the workload by the stainless steel baffle.
• A solid state controller controls the motorized burner and an excess temperature cutoff instrument is included.

All Models

• A roof-mounted plug type fan is utilized for high capacity airflow and ease of service. A magnetic proximity switch monitors the rotation and will shut down power and sound an alarm if the fan is not operable.
• Stainless steel recirculation baffles guide the airflow from the fan, past the heating source and up through the workload to maximize temperature uniformity throughout the workload. A fresh air inlet and outlet, with dampers, is included to provide both low temperature operation and the ability to vent fumes that may arise due to the workload being processed.
• Insulation consists of lightweight, low heat storage insulation with a stainless steel interior.
• The furnace shell is fabricated from 3/16” thick steel plate with structural reinforcement. The front plate of the furnace is fabricated from a ½” thick steel plate.
• The front door is pneumatically operated vertical lift type with manually operated 3-way valve, air filter, regulator and lubricator mounted and prepiped.
• The furnace consists of HK alloy roller rails and includes a chain guide.
• Lindberg companion draw furnaces are fully prepiped and prewired. A completely wired control cabinet includes instruments, pushbuttons, control circuit transformer, motor starters and relays. The furnace needs only to be connected to air, water, gas and/or electrical supplies and the unit is ready for operation.

Options

• 800°F and 1400°F maximum operating temperature
• Circular and strip chart temperature recorders
• Full width alloy roller hearth
• Inert atmosphere construction
• External front-mounted water quench tank for solution heat treating of aluminum
• High capacity recirculation fan

Applications

• Aging
• Annealing
• Austempering
• Baking
• Curing
• Drying
• Preheating
• Solution Treating
• Tempering