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Q. Explain about Postweld Heat Treatment?
Pressure vessels shall be postweld heat treated per applicable sections, in accordance with applicable material specifications or when specified by the User, due to service such as ammonia, caustics, amines, or wet hydrogen sulfide. Alternative Postweld Heat Treatment Requirements For Carbon And Low Alloy Steels, shall not be employed.
PWHT provides reduction of residual stresses, due to forming and welding, and results in softening of heat affected zones. Some steels can be damaged within certain temperature zones below PWHT temperature. A Materials Engineer shall be consulted regarding the need for postweld heat treatment, and dependent on service conditions. The resulting recommendation shall be included on the Data Sheet.
A tensile test on a specimen having an initial diameter of 13.11 mm and an initial gauge length of 200.0 mm, gave the following data:
how many links and joint does the automatic tool changer (ATC) mechanism has?
Symmetric Central Force A central force is spherically if the magnitude of the force does not depend on the direction (angles θ , or Ø ) of the particle but only on distance
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Torsion equation derivation
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Ask question #Minimum 100 words acceptedIf your requirement is for a sensor suitable for a heavy industrial application, with a linear characteristic, working in temperatures up to
Q. Cyclic Service for vessels? The required service for all vessels shall include consideration of cyclic service. Batch operation vessels, for example, quite frequently fall i
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