| Steelmaking |
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Our electric furnace steelmaking operation is dedicated to the production of billets for conversion into quality wire rods. | ||||||
| These mixes and other raw materials including
ferro-alloys are optimized by means of a computerized control system which monitors the
entire process from raw material selection to finished billet, enabling steels with
controlled residual element levels to be produced in the full range of carbon, low alloy
and welding grades. The raw materials are fed into a 75-ton electric furnace designed for efficient melting. The furnace is tapped regularly into hot metal ladles via a tapping turret, which has greatly improved plant efficiencies and environmental conditions. Final chemistry and temperature adjustments take place in a modern, computer-controlled ladle furnace where heat input, alloy additions and argon stirring combine to produce a homogeneous product. The molten steel is then cast on a four-strand continuous casting machine. Shrouding of the liquid steel streams during casting minimizes reoxidation, contributing greatly to steel cleanliness. Tubular ceramic shrouds are used from ladle to tundish. From tundish to mold, either inert gas or submerged casting is used. The steel quality is further enhanced by the use of electromagnetic stirring in the mold during solidification. Once torch cut to length, the finished billets undergo hot and cold inspections and identification. Where surface integrity is important, as in cold heading applications, billets are shot blast on all four faces and fully inspected to evaluate their surface quality. |
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| The high quality standards achieved in QIT billets
derive from consistent low levels of residual elements in the molten iron feed to the
steel plant, clean steelmaking practice using a basic oxygen furnace (K-OBM) and
state-of-the-art ladle furnace and continuous casting technologies. Other sources of hot rolled and continuous cast billets have also been developed over the years to complement the rod mill's product lines, thereby providing Ivaco Rolling Mills with expanded opportunities in the production of high quality wire rods for very demanding applications. |
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| Important note : The data contained herein is accurate to the best of our knowledge and is provided for general information only. Ivaco Rolling Mills Limited Partnership gives no warranties as to the suitability of such data, and limits its product warranties to those expressed in its conditions of sale. | |||||||||||