Effect of feed and roller contact start point on strain and residual stress distribution in dome forming of steel tube by spinning at an elevated temperature

摘要: Tube spinning, without mandrel, is a common process used for manufacturing pressure vessels, e.g. CNG (Compressed Natural Gas) capsules automotive industry and fire extinguishers. The carried out at an elevated temperature forming dome on thick wall steel tube ends. Two of the most important control parameters in are “roller contact start point” (RCSP) spinning feed (pitch), both them highly affecting time deformation behavior tubes therefore success quality product. In this article, using three-dimensional dynamic explicit finite element model, effects these investigated circumferential, axial radial (thickness) strains formed three thickness layers wall. model also verified by experiment.While circumferential strain shown to be independent feed, affected roller point. It sh...