Home ยป News

The Basics of Carbon Steel :Primary Steelmaking

 Primary steelmaking
Steel can either be made from 100% recycled material or from a combination of recycled material and virgin steel. Virgin steel is produced in a blast furnace from iron ore, coke (produced from coal), and lime. The raw materials are added to the top of the furnace, which operates at 3000°F. As the iron ore melts and mixes with the burning coke, carbon is released into the molten product. Impurities are absorbed by lime into a slag on the surface, which can be skimmed from the liquid steel. The product at this stage contains about 4% carbon and still has some impurities present. Molten virgin steel is transferred to the basic oxygen furnace (BOF), which already contains recycled scrap metal. Pure oxygen is blown through the liquid steel to oxidize the excess carbon, forming a finished product with up to 1.5% carbon content.
carbon steel elbows
Recycled scrap steel can be reprocessed without the addition of virgin steel in an electric arc furnace. High-power electric arcs melt the metal at temperatures up to 3000°F. As the scrap steel melts, further batches of scrap can be added to the furnace up to its capacity. Once a flat bath of molten steel is achieved, oxygen is blown through in the same manner as the BOF. In both cases, molten steel is tapped from the furnace into ladles or steel baths for further processing, while the surface slag containing impurities is removed.
Carbon steel can be categorized depending on the chemical composition and characteristics of the product. Mild steel also falls under the low carbon steel category as it is comprised of similar carbon content. our company provide carbon steel elbows ,if you need that pls contact us.
Hebei Longrun Pipeline Group CO., Ltd Site Map Tel: +86-311-66616206 E-mail: admin@lrpipefitting.com