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ANP PROJECT PROGRESS REPORT
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PHOTO 17243
Fig. 3.4.10. Completed Test Weldment for Joining Pressure Shell Flange to Pump Barrel Sleeve.
INVESTIGATION OF SHRINKAGE OF INCONEL
CORE SHELL WELDS
P. Patriarca A. E. Goldman
A series of tests are being carried out to de-
termine the weld shrinkage to be expected during
fabrication of the lnconel core shell welds.
Comparisons of the weld shrinkage formulas given
in the literature with preliminary results obtained
at ORNL revealed wide discrepancies. It was
decided that actual experiments that would yield
empirical data would be required. A program of
welding lnconel plates under controlled conditions
and close observation was therefore carried out.
Based upon the results of these tests, the welding
of large lnconel hoops was begun, These tests
were performed in a manner that as nearly as
1 84
possible duplicated the fabrication problems and
restrictions of the actual core shells.
Each test of the initial program consisted in
the inert-arc welding of two \-in. lnconel plates,
each 6 x 20 in., in accordance with the established
procedure specifications (PS-1). A 50-deg bevel
with a \ -in. land was machined on one long edge
of each pfate. A total of nine tests was performed.
Each pair of plates was assembled as shown
in Fig. 3.4.13. The root gap was fixed ot in.
by using four k-in. tool-steel spacers. The plates
were held against a flat horizontal plate by means
of C-clamps. Two large clamps were used to draw
the plates tightly against the tool-steel spacers.
The edges of the plates were securely taped to
prevent air leakage into the gap, since only the
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