An overview of steel sector.

The Indian steel industry have entered into a new development stage from 2005-06, riding high on the resurgent economy and rising demand for steel. Rapid rise in production has resulted in India becoming the 5 th largest producer of steel.
It has been estimated by certain major investment houses, such as Credit Suisse that, India’s steel consumption will continue to grow at nearly 16% rate annually, till 2012, fuelled by demand for construction projects worth US$ 1 trillion. The scope for raising the total consumption of steel is huge, given that per capita steel consumption is only 40 kg – compared to 150 kg across the world and 250 kg in China.
The National Steel Policy has envisaged steel production to reach 110 million tonnes by 2019-20. However, based on the assessment of the current ongoing projects, both in greenfield and brownfield, Ministry of Steel has projected that the steel capacity in the county is likely to be 124.06 million tonnes by 2011-12. Further, based on the status of MOUs signed by the private producers with the various State Governments, it is expected that India’s steel capacity would be nearly 293 million tonne by 2020.

Hardened Tempered Steel Strip

Hardening and Tempering is a thermal process that strengthens steel through a controlled heating and cooling process.

This process will result in improved mechanical properties and give a tougher more durable product. The hardening process involves heating the steel to above the critical temperature for the given grade and then rapidly cooling. Whilst this process achieves the highest mechanical stengths and hardness’s, steel in this condition is extremely brittle and therefore requires further treatment in the form of tempering. This consists of reheating the steel to a lower temperature and holding the steel at the given temperature for a given period of time. As with traditional annealing (used to soften steels) this process is conducted in an inert atmosphere to avoid oxidation.

The exact temperature and processing times vary with given grades of steel and the process is very specialized.

Rolling Hard Steel Strips

These are basically as rolled hard steel strip. To achieve a desired hardness, an annealed material of suitable thickness is taken and rolled down to the required thickness, to achieve that required hardness. After rolling, the material is pinch passed and final annealing is not required. To choose the correct thickness (for reduction to the desired thickness) is a matter of expertise.

Grades: This strip is available in low, medium & high carbon grades.

Applications: It is suitable for components where formability is limited. It saves the extra annealing cost. The strip is directly punched & formed and if required sent for heat treatment.