Steel Making plants

This plant is composed of three electric arc furnaces and three ladle furnaces, a vacuum degassing unit (VD), a vacuum oxygen decarburization unit (VOD), two continuous casting and a mechanized ingot casting unit.

Raw material including sponge iron, iron scrap, ferro-alloys as well as auxiliary material is fed in a fully automated manner, into the 40 ton electric arc furnaces with 36 and 43 megawatts capacities, based on weighed production instructions. In order to reach the required quality standard, the melt is then transferred from electric arc furnaces into ladle furnaces.

Next, the final chemical composition is created in the secondary metallurgy station in the ladle furnace which is equipped with electromagnetic stirring system and also gas purging system, where argon gas is injected into the melt. Following the secondary metallurgy operations, based on customer requirements regarding final size, and chemical composition, the melt is transferred to one of the two kinds of casting stations. Casting is carried out in stations using two different methods. The first method is continuous casting, which is applied for bloom production in 250mmx230mm dimensions and billets in 120mm, 130mm, 150mm and 180mm dimensions.

   

 

 

In this method a mould, electromagnetic stirring and the melt surface level automatic control as well as coding systems are provided. The second method is the IC method, which is applied for the production of 1, 2 and 3.3 ton ingots. This method is used for manufacturing high grade alloy steels which cannot be manufactured under the continuous casting method.

             

Then after annealing  heat treatment and inspection, the casting products which are blooms, ingots and billets are prepared in accordance  with the customer requirements in the preparation unit using grinding and milling equipment. The semi finished products are then ready to be transferred to the Heavy section or Light section mill.