A Process for Calorising of Mild Steel/Low Alloy Steel
Introduction
A unique process to make calorised tubes with no equals in the market. The pack cementation process known also as 'Alonising' is used calorising of steel tubes and any other fixtures and can be done on mild steel, Low alloy steel, alloys and stainless steels. A plant with a capacity to manufactures calorised tubes of 30,000 meter length, costs approx. RS. 60 lakhs. Ideally suitable for small scale industry. ROI-60%
Type of Technology
Indigenous
Area of Technology
Materials and Material Science
Major raw materials
Activator, Fe-Al powder and refractory grog
Major Plant Equipment/Machinery
Furnace ( Electrical, 3 phase, 440V) 10 x 3 x 4m size upto 1000ºC, Roller pot mill, Hermetically sealed retorts
Area of Application
Minerals, Metals and Materials
Applications
Used for calorising steel tubes needed in sulphuric acid plant and other SO2 / SO3 environment, petroleum refineries, coal gassification and liquefaction plant, exhaust systems of cars/vehicles, furnace parts annealing retorts, heat treating fixtures,Lancing tubes, furnace curtains etc
Status of Specific Development
Ready for commercial use. The process is standardised on one foot length of mild steel tube with sufficient coating thickness on both inside and outside of tubes. The calorised tube got evaluated at PDIL, sindri and FACT, Cochin.
Technology Transfer Assistance Offered
Includes
- Process know-how
- Details of equipment's
- Plant Lay-out
- Quality assurance. Assistance in setting up the plant on separate terms
For further information please contact
Director
National Metallurgical Laboratory
Jamshedpur-831 007, India
