Design and Stress Analysis of Extraterrestrial ... - The Black Vault

Deflectors, Jackets, shields and auxiliary parts can be welded
by electric spot welding. The location of electrodes and the form
of welding are shown in the drawing on Fig. 2.4b.
In the illustration of electron-beam welding (Fig. 2.4c) the
filling of the seam with metal is not shown or is shown in the form
of a wedge with a 30-50 angle.
The seam, without shading, is
welding (Fig. 2.4d).
shown on the drawing of friction
Figure 2.4e is
different-type materials.
an illustration of soldering single-type or
The two-layer shells 1, 2, 3, shown in Fig. 2.4f, are widely
used in reactor construction. The shells 1 and 3 are connected
with adapter 2 between them by soldering. The shape of the adapter
differs. An adapter with steep pitch is used in elements where the
load on the shell 3 is small.
Extreme differences in t1_ thicknesses of welded parts should
be avoided for argon-arc welding in butt and overlap welded units.
Figure 2.5a shows e.xamples of correctly and incorrectly (circled
sketches) welded units.
Figure 2.5b gives an example of argon-arc welding of sheetmetal
elements of the reactor's housing with elements not made from
sheet metal. In the housing there are parts which connect several
such elements, for example, a frame flange. The thicknesses of the
walls of the welded elements must be the s~ame at the weldin& points.
The welding seams of parts 4I and 5 are - on different levels
tc provide for assembling fiom the same s,11,.
On the four drawings in Fig. 2.5c we see the e:i finishing of
two-layer shells. Usually, two-layer shells consist of a thickwalled
power shell having minimum temperature, a thin hot shell,
and the adapter between them which connects the shells with soldering.
96