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Industrial ovens for sale that offer various heat treatment processes

Industrial ovens were made to expose different products to the heat treatment processes at exceptionally high temperatures. Industrial ovens can operate below 600°C and above 1000°C, and the reason for the flawless working are airflow patterns and product loading. The most common industrial baking ovens for sale in our offer at Procesni Inženiring d.o.o. are used for heat treatments such as annealing, hardening, normalising, ageing, tempering, stress relieving and carbonation.

Industrial ovens and processes

Heat treatment of steel and heat treatment process definition

Heat treatment is a process, of using predetermined methods of heating and cooling steel products, to change mechanical characteristics of the product in the industrial oven. It is done for several reasons such as changing the metal's shape, making it softer, denser, to relieve stresses, magnetism, ductility, corrosion induced by previous working processes or to affect heat or electrical conductivity. For example, in heat treatment of steel, the high temperature alters the microstructure of steel, which plays a crucial part in its mechanical properties. 

Heat treatments and their outcomes depend on various parameters such as heating, materials, surrounding conditions and rate of cooling. During the heating, it is still possible to change the metal's state, but what determines the result is cooling. Time of the process depends on the material type, its structure, size and requirements. The industrial ovens allow for high precision when cooling, and for that reason, the cooling can be done in a predetermined manner.

Heat treatment in industrial ovens

Heat treatment and most common heat treatment process types

The most common heat treatment process types are:

  • Annealing
  • Normalising
  • Hardening
  • Ageing
  • Stress relieving
  • Tempering
  • Carburisation

Heat treatment process types that change metal characteristics

When subduing products to the heat treatment process in industrial ovens, there are a few methods we can choose from. Which one will we choose depends on what kind of mechanical qualities we want, and the requirements we have to comply with.


  • Annealing

Heat treatment of steel annealing is a process, where the metal is heated at very high temperature and then slowly cooled down. This process makes metals more tough, ductile, more suitable for cold forming, and it relieves stress caused due to prior work processes. The techniques of heat treatments of steel annealing include full annealing, partial annealing, recrystallisation annealing and final annealing.


  • Hardening

Hardening is used to increase the metal's hardness and is one of the most common heat treatment processes. A product hardness and strength are increased by heating up and then swiftly cooling down.

 

  • Normalising

Normalising is a heat treatment process for relieving stress caused by previous work processes such as casting, quenching or welding. The product is subjected to a temperature that is 40° C above its upper critical temperature. This treatment makes metals stronger, denser and more robust.


  • Stress Relieving

Stress-relieving is a method in which we subject the metal to a temperature just below the lower critical border and then slowly cool it down. It is another way to relieve stress caused by previous work such as machining, forming, straightening or rolling.

 

  • Ageing

Precipitation hardening or ageing is a heat treatment that raises the temperature to medium levels and brigs it down rapidly. It is used to increase yield strength.

 

  • Carburisation

Carburisation is a heat treatment where the metal is heated in the proximity of the substance that releases carbon. The carbon is then absorbed into the surface of the metal, which creates a more solid surface.


  • Tempering

Tempering is the process which reduces excess brittleness, hardness and relieves internal stresses caused during the hardening process. The temperatures are much lower, and the speed of cooling down does not affect the structure of the products.

Industrial ovens with heat treatment above 1000°C


Industrial ovens with heat treatment below 600°C and above 1000°C

Here at Procesni Inženiring d.o.o. we are constructing industrial ovens with efficient technological solutions and according to your wishes. Industrial baking ovens for sale in our offer are complying with high energy standards. Industrial ovens for heating products below 600°C were designed to expose products to the heat treatment process under the prescribed temperature. Time of the heat treatment depends on the size of ventilators, material demands and gas burners. The industrial ovens for heating products below 600°C are equipped with a double ceiling, walls and are insulated using mineral wool. That prevents heat loss and guarantees proper air circulation. Industrial ovens for heating products above 1000°C are completed with a frame and have meticulously selected type insulation. The insulation is based on the temperature, atmosphere (oxidation or reduction) and type of the oven (chamber or continuous). It is done by a grog brick, refractory concrete or refractory ceramic wool. Industrial ovens can be heated indirectly, with radiant pipes, or directly, with smoke gases. They use special regenerative and recuperative burners that allow for better energy efficiency and provide us with greater evenness of the products. The rotary industrial ovens were designed for fine materials heating such as chippings, mulch, pallets. Rotary quenching oven is ensuring a controlled atmosphere and energy efficiency. The controlled atmosphere is achieved by the density of a granular material which shuts down air supply in the drum. The industrial oven is energy efficient due to the use of the recuperative burner and proper sealing. Our systems at Procesni Inženiring d.o.o. are designed to increase energy efficiency and protect the environment.

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