Production of Rebars ContainingMn Steel
The production of rebars containing Mn steel is a relatively new development in steel industry. Those special type of rebars have higher ductility, better ductility/tensile strength ratio and to some extent, higher corrosion resistance. This article will discuss how rebars containing Mn steel are produced.
First, the raw material is melted and refined through an electric arc furnace to obtain a homogeneous Mn steel. Then, the liquid product is cast in a steel die, cooled, and then rolled into wire rod having a diameter as small as 8mm. Following this, the Mn steel wire rod undergoes hot rolling operations to produce the required shape and size. The rolling is conducted in a four-high rolling stand, followed by a finishing train, where further changes in the surface and mechanical properties of the reinforcement bar can be achieved.
The rebar produced needs to undergo a number of tests to prove the sufficient composition and mechanical properties. This includes the determination of carbon content, tensile strength, ductility, and grain size. A number of methods have been developed which enable the steelmaker to measure and verify the mechanical properties of the rebar.
To finish the production process of Gn steel, it is annealed at 500°C in a continuous process. After annealing, the steel needs to be cold worked to achieve the desired tolerance and dimensional accuracy. This is done by either drawing the steel through a die or passing it through rolls.
To ensure the finished product meets the customer specifications and end-use requirements, it is subjected to stringent quality control checks at every step in the production process. This includes tests to ensure the homogeneity and consistency of the steel, as well as numerous other tests. Once established and confirmed, the quality of the product is maintained and it is ready for dispatch to the market.
In conclusion, the production of rebars containing Mn steel requires the manufacturing of large volumes of steel and expensive capital equipment for melting, casting, and forming the steel. The production of Mn steel is a complex and demanding operation, but an essential one to ensure the product meets the customer requirements and end-use specifications.
