ANNEALING FURNACES

Nutec Bickley annealing heat treatment involves heating a material to a specified temperature and then cooling at a very slow and controlled rate. Find out more about our equipment for this process and what annealing entails.

There are several furnace types to choose from, based on the size of your operation, temperature and features needed for your product.

Nutec Bickley’s precision manufacturing and decades of knowledge ensure that your aluminum annealing furnaces will get the job done and stand the test of time.

ADVANTAGES OF OUR ANNEALING FURNACES AND OVENS

  • Custom designed furnaces
  • Low maintenance refractory systems
  • State-of-the-art combustion systems
  • Direct or indirect fired systems
  • Integration of SCADA
  • Flexible modular or continuous heat treat systems
  • Integrated loading and unloading
  • Controlled cooling

Furnaces we manufacture for annealing heat treatment

ROLLER HEARTH FURNACES

roller hearth furnaces for annealing

Roller hearth ovens and furnaces are designed for batch process applications, and for continuous–indexing production.

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PUSHER FURNACES

pusher furnaces for annealing

We design pusher furnaces for continuous–indexing production with indexing pusher mechanisms located outside the furnace.

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CAR BOTTOM FURNACES

car bottom annealing furnaces

We manufacture heavy duty car bottom furnaces in custom designs and dimensions. They have the ability to handle large/heavy loads.

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BOX FURNACES

box furnaces furnaces for annealing

We provide box furnaces and ovens for temperatures ranging from 150°C to 1,340°C (300ºF to 2,450ºF) to perform a wide variety of process applications.

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MESH BELT FURNACES

mesh belt annealing furnaces

We review the individual product and process application, to determine the ideal choice of conveyor and the best air flow pattern system.

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MOVING HOOD FURNACES

moving hood furnaces for annealing

We provide heavy duty moving hood furnaces for the heat treatment process (normalizing, annealing, stress relieving and others).

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ROTARY HEARTH FURNACES

rotary hearth annealing furnaces

These furnaces provide an efficient method of heating product that can be loaded and unloaded from the same general area using manual means, dedicated machines or robotics.

WALKING BEAM FURNACES

walking beam furnaces for annealing

We can supply walking beam furnaces and conveyors for industries such as forging, stress relief, and tube, rod and wire, etc.

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ISO TUNNEL FURNACES

iso tunnel annealing furnaces

We manufacture continuous Iso-tunnel furnaces for temperatures up to 1,065°C (1,950ºF) in the tube, rod and wire industry.

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SCREW HEARTH FURNACES

screw hearth furnaces for annealing

Heat treatment systems have fully integrated hardening, quenching and tempering for high volume and continuous production up to 140,000lb/hr (~64 metric tons/hr).

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Download our Aluminum Heat Treating ebook!

When considering aluminum, at Nutec Bickley we are chiefly concerned with products for the Automotive and Aerospace sectors, where aluminum heat treating is a key part of the process.

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Nutec Bickley’s added value

Nutec Bickley is focused on understanding our customers' thermal equipment needs and working to supply the best equipment to meet those needs at the most competitive price.

By applying the latest proven technology, Nutec Bickley is able to provide innovative solutions that meet or exceed our customers' expectations in equipment quality, production efficiency and operational economy.

Industries and applications of Annealing Furnaces

INDUSTRIES

Industries

Steel forging, automotive, aerospace, foundries, tube manufacturers, aluminum producers, steel bars and rods.

APPLICATIONS

Applications

Furnaces are tailored to each customer’s needs for both ferrous and non-ferrous applications.

What is Annealing?

Annealing is a heat treatment process in which a material is heated to an elevated temperature and held for a set amount of time and then cooled at a controlled rate.

Annealing process stages:

  • Heating to required temperature
  • Holding (‘soaking’) at constant temperature
  • Cooling

The high temperature cycle (soaking time) is long enough to allow the desired transformation to occur. Cooling is done slowly to avoid warping/cracking due to the thermal gradients and thermoelastic stresses within the metal piece.

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Purposes of annealing furnaces

  • Relieve internal
    stresses
  • Increase ductility, toughness, softness
  • Produce specific
    microstructure

ANNEALING PROCESS

is used to reverse the effects of work hardening (by recovery and recrystallization) and to increase ductility. Heating is usually limited, in order to avoid excessive grain growth and oxidation.

STRESS RELIEF ANNEALING FURNACES

is used to eliminate/minimize stresses arising from plastic deformation during machining, non-uniform cooling and phase transformations between phases with different densities. Stress relief annealing furnaces allows these stresses to relax. Annealing temperatures are relatively low so that the useful effects of cold working are not eliminated.

NORMALIZING

is an annealing heat treatment just above the upper critical temperature to reduce the average grain sizes (of pearlite and proeutectoid phase) and create more uniform size distributions. After complete transformation to austenite (austenitizing) the treatment is completed by cooling to the required microstructure.

FULL ANNEALING

involves austenitizing and slow cooling (several hours). It produces coarse pearlite-large grains (and possible proeutectoid phase) that are relatively soft and ductile. Full annealing furnaces is used to soften pieces which have been hardened by plastic deformation, and which need to undergo subsequent machining/forming.

SPHEROIDIZING

involves prolonged heating just below the eutectoid temperature, which results in the soft spheroidite structure. This achieves maximum softness needed in subsequent forming operations.

 

 

annealing furnaces - Photo

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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