ISSN:
1662-9752
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
Seamless tubes are used for many applications, e.g. in heating, transport gases and fluids,evaporators as well as medical use and as intermediate products for hydroforming and variousmechanical applications, where the final dimensions normally are given by some cold drawingsteps.The first process step – piercing of the billet, for example by extrusion or 3-roll-milling -typically results in ovality and eccentricity in the tube causing non-symmetric material flow duringthe cold drawing process, i.e. inhomogeneous deformation. Because of this non-axisymmetricdeformation and of deviations over tube length caused by moving tools, this process step generatesresidual stresses. To understand the interconnections between the geometrical changes in the tubesand the residual stresses, the residual strains in a copper tube had been measured by neutrondiffraction
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.571-572.21.pdf
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