CAR BOTTOM FURNACES

There is a substantial advantage associated with the design of our car bottom furnaces, namely the ability to handle large / heavy loads, as the product is loaded onto the car(s) when located outside the actual furnace area; this eliminates possible damage to the furnace interiors during loading and unloading.

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The flexibility of a car bottom furnace makes it a popular choice for processes that require the handling of batches, large and unusual shaped pieces, or multiple configuration loads.

The ability to load with an overhead crane, forklift or other methods provides options that make this type of furnace a common choice.

This furnace can be designed to operate at low temperatures for tempering processes as well as higher temperature annealing and even higher temperature reheating or forging.

Our experience in providing these furnaces is unsurpassed. With our Nutec Bickley experience, along with the acquisition of Olson Industries, we have more than 1000 references in car bottom furnace installations.

Seal the car perimeter to the inside chamber

With these furnaces one of the key features is the ability to seal the car perimeter to the inside chamber. Our designs include fiber lifting seals that are actuated by pneumatic cylinders and mechanical means that provide a good seal to minimize cold air infiltration and heat losses that might otherwise cause wear and thermal damage to the substructure.

Multifaceted design

Another critical area is the door perimeter seal which can be achieved with a variety of methods by using refractory materials that allow compression and sealing at the same time as providing a solid damage-resistant surface that will last over time. Nutec Bickley car bottom furnaces have been refined and proven over time to feature some of the best designs in the industry.

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Download our furnaces e-book covering all metals industry sectors!

Great temperature uniformity, performance and quality are some of the characteristics that make us the best designers and manufacturers of furnaces and ovens available in the market.

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Our experience with car bottom furnaces for processing loads from under 1,000lbs (450kg) up to 350T (320,000kg) requires a wide engineering know-how in all aspects of heating and material handling.

Advantages of car bottom furnaces

  • Temperatures up to 2,460°F (1,350°C).
  • Heavy duty, stable steel frame and refractory construction.
  • Fiber-lined sections using the Jointless® system with a special design to compensate for fiber shrinkage, considerably reducing maintenance.
  • Designed to comply with AMS 2750E, with temperature tolerance capacity up to Class 1 if necessary.
  • Most advanced heat recovery system, saving FROM 10% to 70% energy versus a cold air system.
  • Pulse firing combustion systems.
  • Heavy duty car refractory designs with high thermal shock resistance capacity.
  • Tight seal designs are available, allowing excellent pressure control to optimize the use of regenerative burners.
  • Material handling options to allow for maximum furnace production, including multiple cars, doors, and load/unload equipment.
  • PLC control packages to track and control all aspects of operation, including repeatability for ease of checking for uniformity. Excellent diagnostic interface for troubleshooting processes.
  • These furnaces can be customized to handle multiple car loads, doors at each end and additional handling features to suit specific situations that solve individual customer demands.

Industries or process where Car Bottom furnaces are used

  • Other applications
  • Electrical (transformers and motors)

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Nutec Bickley provides Car Bottom Furnaces & Ovens in custom designs and dimensions to match customer production and process requirements. Find below some examples of our products:

HIGH CONVECTION CAR BOTTOM OVENS

High Convection Car Bottom Ovens

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Nutec Bickley makes use of the most modern technologies to provide high convection car bottom ovens in custom designs and sizes, to perform the following process applications:

  • Aging of aluminum extruded products
  • Aging of aluminum forgings, castings and other fabricated parts
  • Tempering of steel parts
  • Stress relieving of steel parts
  • Curing
  • Drying
  • Coating
  • Preheating
  • Designed to comply with AMS 2750E, with temperature tolerance capacity up to class 1 if necessary.
  • Gas fired, indirect gas fired and electric heating systems available.
  • Recirculating ventilation systems designed to provide large volume and high velocity air flow through the work zone to ensure uniformity and efficient heat transfer to the load.
  • Reversing air flow system designs to improve uniform heating in large products.
  • Customized air distribution designed in order to match the air flow pattern requirements in accordance with product/load arrangement.
  • Energy efficient and low maintenance insulation systems with ceramic fiber modules and telescopic panels, depending on the application.
  • Different door design configurations depending on product, facility and layout requirements.
CAR BOTTOM PREHEATERS

Car Bottom Preheaters

Nutec Bickley makes use of the most modern technologies to provide preheating car bottom units in custom designs and sizes, to perform the following process applications:

  • Preheat tools for hot assembly; press dies in forging plants
  • Preheat the load before heating in forging or heat treating
  • Steel mold preheating for hot coating – die preheating for aluminum foundries
  • Non-burner design options available, using external energy sources such as hot gases from existing forge or aluminum melting furnaces.
  • Control system capability to maintain stable operation from the energy supply furnace so it can be used according to normal parameters.
  • Customized air distribution designed in order to match the air flow pattern requirements in accordance with product/load arrangement.
  • Energy efficient and low maintenance insulation systems with ceramic fiber modules and telescopic panels, depending on the application.
ALUMINUM LOG HOMOGENIZING CAR BOTTOM SYSTEM

Aluminum Log Homogenizing Car Bottom System

Nutec Bickley uses the most modern technologies to provide heavy duty car bottom homogenizing furnace systems for aluminum logs and ingots in order to provide workability and to improve the surface appearance of extruded products. Logs can be treated in diameters from 6” to 14” (15cm to 36cm) and in full lengths or in sections.

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  • Heavy duty car steel frame and refractory construction.
  • Recirculating ventilation systems designed to provide large volume and high velocity air flow through the work zone to ensure uniformity and efficient heat transfer to the load.
  • Reversing air flow system designs to improve uniform heating.
  • Dynamic breaking system used in circulation fans in order to improve their stop time.
  • Energy efficient and low maintenance insulation systems with ceramic fiber modules.
  • High convection cooling chamber designed in order to achieve the required cooling rates and log properties.
  • Cooling chamber designs with air or combination of air/water mist.
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STRESS RELIEVING (PWHT) CAR

Stress Relieve (PWHT) Car

Nutec Bickley provides a heavy duty car bottom furnaces line for the stress relieving (post weld heat treatment) of large steel plate weldments such as rail tanks, vessels, large boiler parts, heat exchanger parts, land mover machinery parts, etc.

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  • Outdoor designs available with required steel construction details and NEMA4 or IP65 rated components.
  • Heavy duty, stable steel frame construction.
  • Low maintenance fiber-lined sections using a large module system to reduce the amount of joints.
  • Low mass car bottoms designed to reduce fuel consumption, reducing car heat storage.
  • Pulse firing combustion system to allow excellent temperature uniformity.
  • Cooling nozzles system available to accelerate and control the cooling cycles if required.
  • Post weld heat treatment in accordance with the AAR’s Manual of Standards and Recommended Practices specifications for tank cars.

Why Nutec Bickley?

  • The wide range of products and capacities has given Nutec Bickley the advantage of understanding the car bottom furnace design requirements for light, medium and heavy duty service applications
  • The car must be able to remain flexible enough to handle uneven loads while maintaining the ability to move in and out of the furnace, allowing all wheels to distribute the loads properly to avoid premature failures. This attention to detail is what makes our car bottom systems the recognized top-class choice of the industry
  • Besides basic car bottom furnaces, we have vast experience designing custom heating / processing equipment, including integrated air and water quench systems
  • We provide automation & material handling solutions
  • Pre-assembly of furnaces at our fabrication facility provides a guarantee of quick and easy field installation, while test firing verifies that all components are in proper working condition, thereby minimizing commissioning issues on site
  • All of the latest firing technologies are available through Nutec Bickley and references can be supplied to validate our technology. Another benefit is our furnace pressure control systems that provide for the best control over the entire firing range of the furnace. This allows the furnace to be in operation longer with less maintenance required over its lifetime
  • Customers are welcome and indeed encouraged to come and see our testing procedures to make sure they are receiving the end product just as they expected

NEED HELP?

You can contact us by email: sales@nutec.com

Or send us a message describing your project and we’ll help you get a better result

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