ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
As the surface friction between feeding rolls and metal sheet generates the feeding powerof ECAR, the generated feeding power is low, and the friction between the metal sheet and ECAR dieshould be minimized. However, for obtaining a large shear deformation by ECAR, the metal sheetshould be tightly contacted with the wall of ECAR die. In this condition, the thickness of the metalsheet is continuously increased during ECAR. A new ECAR apparatus is developed for maximizingthe shear deformation and obtaining sheet thickness uniformity, and succeeding continuous ECARwith such a limited feeding power. By controlling the outlet gap of the ECAR die with elastic unit, thethickness of the metal sheet is kept uniform. Detailed thickness control mechanism during the newECAR process is analyzed. A sheet of Al 6063 alloy that is 1-pass deformed with the new ECARapparatus shows below ±0.037 mm of thickness variation and 0.61 of shear strain
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.2872.pdf
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