Flatness is a vital quality index that determines the dimensional accuracy of cold-rolled strip. This paper designs local shape wave extraction algorithm and fuzzy classification for overall flatness defect based on cosine distance. By introducing small displacement buckling theory thin plates, plate stress model waves studied, critical elongation difference under given conditions are obtained....

A prototype of an automated visual on-line metal strip inspection system is described. The system is capable of both detecting and classifying the surface defects of copper alloy smp. It has been installed on a production line in a rolling mill for evaluation. The inspection algorithms are based on morphological preprocessing and combined statistical and structural defect recognition. The image...

Controlling the tandem cold rolling of metal strip is a significant challenge to the control engineer. This is due mostly to complex interactions between the process variables, nonlinearities that change with process conditions, and long speed-dependent time delays. The present technology is limited in its capability for improvement in performance. This paper describes a new control strategy th...

Vertical rolling is an important technique used to control the width of continuous casting slabs in hot-rolling field. Accurate prediction vertical force a core point maintaining rolling-mill equipment. Owing limitation algorithm use, accuracy most models based on energy method can only reach more than 10%. Therefore, it challenging optimize rolling-force model improve accuracy. An innovative a...

research scientist, Quaker Chemical Corp., Uithoorn, The Netherlands [email protected] Cold rolling involves intensive frictional contact between two highly loaded metallic surfaces in sliding contact. Together with the deformation-related parameters, such as hardness and reduction, the frictional conditions in the roll bite determine the roll forces and torques required for rolling (Figu...

Copper/aluminum (Cu/Al) laminated composite has been extensively applied in the fields of batteries, electronics and electrochemistry owing to its cost reduction, light weight, good conductivity resistance corrosion. The Cu/Al strips produced by micro flexible rolling consist three regions based on different thickness, i.e. thicker, transition thinner zones, have a broad application prospect, e...

Abstract In this paper, the problems which can occur when wastewater is discharged into surface water bodies are considered. Modern methods of treatment presented: mechanical, chemical, biological, physical-and-chemical, and combined methods. Examples green infrastructure technologies with biofiltration function given, easy to use effective in both urban production runoffs, principles landscape...