Revealing Precipitate Development During Hot Rolling and Cooling of a Ti–Nb Micro‐Alloyed High Strength Low‐Alloy Steel through X‐Ray Scattering

Ultrahigh Strength Steel: Development of Mechanical Properties Through Controlled Cooling

Metallurgically Consistent Determination of Steel Hot Strength Using Process Data from Hot Strip Mill Rolling

It is not rare to observe an inverse relationship between hot strength determined from rolling load of the finishing stands of the hot strip mill and strain. This situation was already described in the literature and is explained by the use of inverse rolling load models that assumes sticking friction in the determination of hot strength. The aim of this work was to show that this “work softeni...

The Effects of Finish Rolling Temperature and Cooling Interrupt Conditions on Precipitation in Microalloyed Steels Using Small Angle Neutron Scattering

Small angle neutron scattering (SANS) was used to quantify the precipitate characteristics (i.e., mean precipitate size, number of precipitates, and distribution broadening) in X-70 and X-80 pipeline steel and in grades 80 and 100 microalloyed steel plate. The precipitate distributions measured for the different steels were correlated with the finish rolling temperature (FRT) and cooling interr...

Optimal Temperature Tracking for Accelerated Cooling Processes in Hot Rolling of Steel

This paper is concerned with the development of a control system for tracking of a desired temperaturetime profile for accelerated cooling processes in hot rolling of steel. Control of temperature during cooling is essential for achieving desired mechanical and metallurgical properties of steel. The cooling process is represented by the heat equation in Lagrangian coordinates which is approxima...

Product and hot rolling process development of NV 40 steel plates 1

The Companhia Siderúrgica Paulista – COSIPA is an integrated steel plant of the Usiminas System located in the municipality of Cubatão, in the coastal region of the São Paulo state, Brazil. This works produces 4.5 millions tons of steel per year; 1.0 million tons of this output are delivered as rolled plates, which meet a wide range of uses, such as those in agricultural implements, industrial ...