Search for dissertations about: "Rolling mill"
Showing result 1 - 5 of 16 swedish dissertations containing the words Rolling mill.
-
1. Evolution of artificial defects during shape rolling
Abstract : Very often defects are present in rolled products. For wire rods, defects are very deleterious since the wire rods are generally used directly in various applications. For this reason, the market nowadays requires wire rods to be completely defect-free. Any wire with defects must be rejected as scrap which is very costly for the production mill. READ MORE
-
2. The interdependence of plastic behaviour and final properties of steel wire, analysed by the finite element method
Abstract : The finite element method (FEM) has been used in order to study the interdependence of plastic behaviour and final properties in steel wire. Three processes metal forming have been studied: billet forging, wire rod rolling, and cold drawing. READ MORE
-
3. On impacts and ride-through of voltage sags exposing line-operated AC-machines and metal processes
Abstract : During the last decade, power quality has been recognised asa global problem. Among different types of power qualityproblems, voltage sags have been identified to be one of themost severe problems for different process industries. The mostcommon reason to voltage sags is lightning strikes in powerlines. READ MORE
-
4. Some aspects on lubrication and roll wear in rolling mills
Abstract : The thesis is focused on lubricants and roll wear in striprolling.Regarding lubricants, the possibility of introducing newones, which are less detrimental towards environment, isstudied in laboratory scale. This is done for cold rolling,both of an Al- alloy and a low carbon steel. READ MORE
-
5. Modeling and Control of Plate Mill Processes
Abstract : In this thesis two processes have been modeled and controlled, namely the plate thickness control and the slab temperature control. The classical solution for the thickness control problem can't handle asymmetric hardness variations and the estimation of the controlled output introduces stability problems. READ MORE