ORNL-2106 - the Molten Salt Energy Technologies Web Site

ANP PROJECT PROGRESS REPORT
0.096
0.000
- 0.064
.- 6
-
w
2 0.048
Y
3
IX
5 0.023
0.016
-
-
-
-
-
-
-
-
-
-
-
-
011;
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DIAL GAGE C
UNCLASSIFIED
ORNL-LR-DWG 44727
20 40 60 00 400 I20 440 I60 400 200 220 240 260 200 300
WELDING TIME (min)
Fig. 3.4.19. Typical Plot of Dial-Gage Measurements of Shrinkage During Final Five Passes of the
Welding of Inconel Hoops.
w t
TABLE 3.4.6. WELDING CONDITIONS AND RESULTS OF SHRINKAGE MEASUREMENTS
ON WELDS OF INCONEL HOOPS -
Test
Arc Time
Required
Rod Used
Current
Used
Total Shrinkage (in.) DialCage Shrinkage* (in.)
NO. (min) (in.) (amp) Maximum Minimum Average Maximum Minimum Average
1 314 1218 80 (root) 0.126 0.1 11 0.1 194 0.095 0.080 0.088
1 10-120
2 31 0 1188 80 (root) 0.138 0.115 0.1261 0.1 02 0.088 0.095
110-120
*Measurements made on last five of the six passes; tack shrinkage and root shrinkage not included.
value being 0.120 in. The longitudinal shrinkage
to be expected will be 0.250 to 0.375 in. for a
circumferential length of 138 in.
As previously mentioned, the values for the
transverse and longitudinal shrinkage for the 44-in.
hoops do not correspond to the values obtained
by calculation from the formulas given in the
literature. Only through the accumulation of
empirical data from actual experience can predictions
be made for future weld shrinkages. Since
each variation in the thickness of the lnconel
plate to be welded will create new problems
solvable only by more actual test results, ad-
190
ditional tests will be conducted on each of the
plate thicknesses of interest.
EXAMINATION OF NaK-TO-AIR RADIATOR
PWA NO. 2 AFTER SERVICE
R. ?. Gray P. Patriarca
A 500-kw high-conductivity-fin radiator, designated
PWA HCF radiator No. 2, failed on December
23, 1955, as the result of a leak. This radiator
had been operating in a test rig for a period of
1199 hr in the temperature range 1000 to 16000F.
For 546 hr of the operating period a temperature - c
differential was imposed on the NaK flowing b