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INGOT PREHEATINGAND HOMOGENIZING

SECO/WARWICK provides custom engineered aluminium ingot preheating and homogenizing furnaces, including pusher, soaking pit and car bottom designs. SECO/WARWICK's long experience with ingot preheat furnaces assures the optimal heat input, air recirculation and furnace efficiency to meet the most demanding specifications. Fast heat-up rates have been obtained without compromising load uniformity or thermal efficiency.

Furnace Temperature Control System and Airflow Design

Whether ingot furnaces are designed with reversing cross flow or vertical upflow, SECO/WARWICK’s furnace temperature control system using heat head and air-to-work ratio with probe thermocouples, prevents overheating the load. This control system can be used with all ingot furnace configurations. Temperature monitoring and heat input can be accomplished through conventional instrumentation, microprocessor-based instruments or programmable logic controllers.

Insulation System

To maximize efficiency and reduce overall Btu per pound requirements for ingot preheating, SECO/WARWICK uses an insulation system that has improved thermal characteristics, lower initial cost and reduced maintenance time. Our proprietary lining system starts with several inches of board-type insulation covered by a ceramic fiber blanket. A stainless steel wire mesh covers the entire insulating surface and is coated with a high-temperature mortar, which provides a rigid surface. If insulation damage does occur, it is much easier to repair than stainless steel liner sheets.

Combustion Efficiency

With the addition of burner recuperators, combustion efficiency can be improved to provide maximum fuel utilization.