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Showing result 1 - 5 of 65 swedish dissertations matching the above criteria.
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1. On Surface Topography of Steel Sheet for Car Bodies
Abstract : This thesis is a contribution to the scientific area of surface topography on sheet metal surfaces. The studies are restricted to exploring the influence of the steel sheet,s surface topography on forming properties and on appearance after painting. READ MORE
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2. Tribology of stamping : the influence of designed steel sheet surface topography on friction
Abstract : Tribology is the science of friction, wear, and lubrication; the interaction of surfaces in relative motion. The tribological conditions in sheet metal forming influences the flow of material in forming operations, the strain distributions of sheet material, extent of wear, and thereby the quality of products. READ MORE
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3. On tool steel, surface preparation, contact geometry and wear in sheet metal forming
Abstract : In sheet metal forming operations the life length of the production equipment islargely dependent on the wear of the tools that are in direct contact with the sheet.One form of adhesive wear where some sheet material gets transferred to the tool, alsoknown as galling, is the most common cause of tool failure. READ MORE
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4. The influence of tool steel microstructure on galling
Abstract : In sheet metal forming (SMF) of materials such as stainless steels there is a major problem with transfer and accumulation of sheet material to the metal forming tool surface. The problem is known as galling; a sort of severe adhesive wear, which results in severe scratching of produced parts. READ MORE
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5. The Influence of Steel Sheet Surface-Topography on Friction in Stamping
Abstract : Steel sheet is the prevalent material for car body panels. In the manufacturing of steel sheets a certain surface roughness is achieved from the ground or textured rolls used in the three final reduction steps. When manufacturing car body panels the sheets first are formed and then painted. READ MORE