Hi ,
It stated you should hold the Speciment minimum at 80 % of the Maximum Vessel Portion Temp For condition A ( This information you will get from the Data sheet which give the max exposure of the vessel ) i.e if the Max Vessel Temp is 100 Dec C you should hold the specimen minimum at 80 Degree C and the range can be ( 80 to 100 Degree C )
Same for the minimum Temp , the holding Temp for condition B should be minimum 120 % of the Minimum Vessel Temp . i.e if the Minimum Temp is - 40 you should hold at - 48 Deg and the range will be ( - 40 to - 48 Deg C )
Thanks
Sujeet
On Mon, Mar 8, 2010 at 12:19 PM, qaqcmpm <mamujeebali@gmail.com> wrote:
3.4.3 Test Specimen Heat Treatment
3.4.3.1 Two sets of tension specimens and one set of Charpy impact
specimens shall be tested. One set each of the tension specimens shall
be exposed to heat treatment condition A. The second set of tension
specimens and the set of Charpy specimens shall be exposed to heat
treatment Condition B.
a) Condition A – ....... Time at temperature shall be no less than 80%
of the actual holding time of the vessel portion exposed to the
maximum vessel-portion temperature.
b) Condition B – ....... Time at temperature shall be no more than
120% of the actual hold time of the vessel portion exposed to the
minimum vessel-portion temperature
Can anybody explain this 80% & 120% with simple example?
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