The optimal material processing in steel industry is difficult because of the multi-constituent and multiphase character of the commercial steels, variety of the possible processing paths, and plant specific equipment characteristics. This paper shows implementation of the genetic programming approach for crack presence modeling after rolling. The data (110 samples covering 7 different steel gr...

The properties of each deformed product are decisively influenced by production process. By means of directed control of the various steps of process it is possible to obtain the desired properties. In order to reach this purpose and to estimate the properties of the end product the whole process chain must be presented as the whole set. This integrated approach starts with the solidified melt ...

Abstract The use of wire arc additive manufacturing (WAAM) in conjunction with topology optimisation enables the production structural components significantly higher strength‐to‐weight ratios than conventional components. However, owing to additional stages involved WAAM ( e.g . welding), a common question arises regarding environmental impacts using produce relative fabrication techniques hot...

in this study, the effects cold rolling and annealing parameters during thermomechanical processing of the aisi 201ln stainless steel were investigated. the cast samples were homogenized, hot-rolled and solution-annealed to acquire a suitable microstructure for the subsequent thermomechanical treatment. unidirectional and transverse multi-pass cold rolling at 25, 0 and -15 °c was carried out to...

in this study, the four cr-mn-(ni-free) austenitic steels were fabricated by vacuum induction furnace. then plates with 10 mm thickness were fabricated by hot-rolling. corrosion behaviour of the four cr-mn steels in 0.1 m h2so4 solution was investigated using by open-circuit potential, potentiodynamic polarization, and electrochemical impedance spectroscopy (eis). the results indicated that the...

In order to present the reasonable crown of hot rolling mills, the bend force and shift position should be pre-computed in a reasonable manner, while maintaining a good profile. How to search the optimal crown trajectory in ratio crown range is the key problem. Crown and flatness allocation strategy is researched based on dynamic programming method which has been improved and optimized by the a...

Silver nanowire transparent electrodes are a promising alternative to transparent conductive oxides. However, their surface roughness presents a problem for their integration into devices with thin layers such as organic electronic devices. In this paper, hot rollers are used to soften plastic substrates with heat and mechanically press the nanowires into the substrate surface. By doing so, the...

This paper develops a methodology for the online classification of different types of surface defects in rolling processes. The method developed consists of three major steps: feature generation, feature selection, and classifier design. Based on the engineering knowledge of rolling processes, a set of potential features are generated from the local regions of sensing images that contain the su...