Delivery program "One-Piece Heads" - Dillinger Hütte GTS

One-piece heads serve for example
as end pieces for pressure
vessels and power boilers. The
widest range of shapes is available:
spherical, torispherical,
elliptical, etc. The flat heads i.e.
flanged only within the proposed
dimensional range are mainly
used for the fabrication of ladles
involved in metallurgical
processes.
Manufacturing process
One-piece heads in Dillingen are
always hot formed by deepdrawing,
the circular blanks being
free of any weld seam. They
are dished by the means of
hydraulic presses up to 2.500 tons
fitted with the proper tooling i.e.
ring and die, the shape of which
suits the inside contour of the
head. The edges are generally
worked by flame cutting; the
machining of the weld-edge
preparation can be also agreed
upon for heads with wall thicknesses
above 30 mm.
Heavy Fabrication Division Dillinger Hütte GTS, One-piece heads [1/7], 2008
13
Scope of supply
Seamless heads can be supplied
spherical-shaped in outside
diameters up to 3.650 mm, torispherical
or elliptical-shaped up
to 4.450 mm or flanged only up
to 4.750 mm. The "Dimensional
Program" table provides information
concerning the standard
shapes, diameters and wall
thicknesses to which the heads
can be manufactured:
intermediate dimensions and
other head shapes must be
agreed upon. Please refer also to
the Technical Delivery Conditions
on page 32.