Scale Free Heat Treatment - Images & Article

SCALE-FREE HEAT TREATMENT (Images)

Not coated before heating.

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Coated with ESPON anti-scale compound before heating.

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Effectiveness of scale prevention by the use of ESPON coating:

This area was not coated.

This area was coated with ESPON.

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SCALE-FREE HEAT TREATMENT (Article) Heat treatment is an important operation in the manufacturing process of engineering components, machine parts and tools. When steel is heated in an electric furnace or oil fired furnace, in the presence of air or products of combustion, oxidation and decarburisation of steel take place. Protection against them is achieved by heating in molten salts, fluidized bed furnaces, protective gaseous media or vacuum. These measures demand heavy capital investment, highly skilled personnel and special safety precautions. Many heat treatment shops cannot afford them, and yet they are under mounting pressure to prevent oxidation and decarburisation. Steel Plant Specialities, Mumbai, manufactures a unique coating which enables any kind of steel to be heated upto 1200°C without the basic problems of oxidation and decarburisation. The coating process can be adopted by both small and large scale units. Some of the benefits claimed are : 1. Ability to use existing furnace, box type or bogie hearth; electric, oil or gas fired. Contd. 5

2. Prevention of oxidation and decarburisation. 3. Elimination of need of salt bath or expensive controlled atmosphere furnace in many cases. 4. Considerable savings in capital investment and operating costs. 5. Elimination or minimization of post heat treatment operations like grinding, shot blasting or acid pickling. The coating process has simplified and accelerated many metallurgical heat treatment operations, reducing costs and improving quality.

For further details, please contact:

STEEL PLANT SPECIALITIES 211, Raikar Chambers, Govandi East, Mumbai-400088 Tel.: 91 22 67978060 Fax : 91 22 25552459 E-mail: [email protected] Visit: www.steelplantspecialities.com