Iron/steel bars & rods, hot rolled, twisted, rolling iron was cited to have been among the major components of metal imported from China.
The paper deals with the application of neural network modelling to the real-time prediction of the geometrical distortion of hot rolled steel rings during cooling from rolling to room temperature.
The United States imposed antidumping duties on hot rolled steel from Russia, Japan and Brazil in 1998.
Most steel bars are either hot-rolled or cold-rolled; a cold rolled bar is shinier than a hot rolled bar, but is also harder to bend.
Material was taken from several processing routes including cross rolled plate, hot rolled round bar stock and small disc forgings.
Under some process conditions, defects such as porosity can sometimes be found in hot rolled rings, which are manufactured from high alloyed steel ingots having macro segregations.
Since 1990, hot rolled coil in Europe has varied from about $250 to $350 a tonne, with a blip up in 1995 and a double dip that began four years later (see chart).
1. Alloying with Cu, Ti and Mo increased the yield and tensile strength of the hot rolled and interrupt cooled low carbon steel from 267 to 695 MPa and 401 to 840 MPa. 2.
The price of a tonne of European domestic hot rolled coil – a type of steel – has more than halved from €642 (£490) per tonne in 2011 to €320.
