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L&L Delivers Second FB435 Furnace to Doncasters, Enhancing Production


L&L Special Furnace announced the delivery of a second FB435 model furnace to Doncaster Precision Castings in Groton, Connecticut. Doncaster, a leader in the aerospace, industrial gas turbine and automotive markets, aims to enhance their in-house annealing, tempering and heat treatment capabilities with this new furnace, thereby improving production efficiency and cost-effectiveness.

The FB435 furnace from L&L Special Furnace has a maximum temperature of 1,850 degrees Fahrenheit (1,010 degrees Celsius) and working dimensions of 44 inches in width, 36 inches in height and 60 inches in depth. It operates in an air atmosphere and includes a vertical counterbalanced pneumatic door and an 18-inch diameter cast alloy fan. Its cooling system uses an automated ventilation system with a 600-CFM venturi air mover for efficient and uniform cooling.

Doncaster’s decision to add a second FB435 model highlights the reliable performance and precision of L&L Special Furnace's products. The furnace features a six-zone SSR control with digital biasing for easy temperature gradient balancing, Honeywell process controllers and a NEMA12 industrial control panel with a fused disconnect, emphasizing its control and safety features. Additionally, the flat castable hearth and stack light audible visual annunciator system enhance operational functionality.

The furnace can handle a typical load weight of 2,000 pounds, making it suitable for heavy-duty industrial processes in the aerospace and automotive sectors.

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