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 (a) Process know-how (b) Details of equipment's (c) Plant Lay-out (d) quality assurance. Assistance in setting up the plant on separate terms

Contact for more information:

Director
National Metallurgical Laboratory
Jamshedpur-831 007, India