In this paper, nano-TiO2lubricating fluid was chosen as an advanced rolling lubricant to investigate its effect on the hot rolled surface and metallographic structure of SS41 steel strips. The tribological performances of nano-TiO2 lubricating fluid were measured by a four-ball tribotester. The hot rolling experiments under different lubrication conditions were carried out by a four-high rollin...

A. Volodarskaja, V. Vodárek, J. Holešinský, VŠB Technical University of Ostrava, FMME, Ostrava, Czech Republic. Š. Miklušová, O. Žáček. ArcelorMittal Frýdek-Místek, Frýdek-Místek, Czech Republic The final Goss texture in grain-oriented electrical steels (GOES) is affected by microstructure evolution and inheritance during the whole production process. This paper presents the results of detailed...

The analysis of the ring rolling machine capabilities in providing increased accuracy blanks is performed. necessity operator’s participation controlling to achieve required even with full automation manufacturing process noted. cooling circular after ensure has been To eliminate ovality low rigidity mill it proposed use technology their controlled and stabilization. sequence thermal strain con...

Control of hot metal rolling process plays an important role in assuring high product quality and safe process operation. Although there have been many looper control technologies recently developed for finishing rolling processes, looperless interstand tension control of roughing and intermediate rolling mills remains a hard-to-solve problem. This paper proposes a current comparison based inte...

The microstructural evolution and underlying mechanism of a new high strength, high toughness near β titanium alloy, β20C, during hot deformation, and heat treatment were studied qualitatively and quantitatively. It was found that dynamic recovery occurs mainly in β phase, while α phase undergoes both a dynamic recovery and continuous incomplete dynamic recrystallization with a fraction of high...

Limited by the deficiency of the finite element method (FEM) to deal with infinite domain problems, the traditional FEM rolling model is not suitable enough to study the effect of the complex internal stress of the incoming strip on hot rolling deformation. To solve this problem, the finite element and infinite element (FE-IE) coupling method is adopted, where the finite element is for the roll...

the main objective of this project was to investigate the behavior and the damaging effects of hot tear segregationsin the continuously cast steel blooms on the final product quality. to achieve this aim, plant data from three differenttypes of steels were used. investigations using the scanning electron microscope (sem) equipped with energydispersive x-ray spectroscopy (eds) probe and metallog...

In practical engineering, quality control of mechanical components or parts of rotational machinery is quite important. As for rolling bearings, the defects from rolling bodies, internal ring, external ring, and retainer are more focused on. Therefore, in this work, a vibration and noise test system is developed for the defect diagnosis of mechanical components above-mentioned. The key point of...