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Samples in periodicals archive:
Welding causes the steel nearest the weld to lose its "ductility," or toughness against cracking, so that a post-weld heat treatment is necessary.
Because of the grade and thicknesses of these steels, preheating, inter-pass temperature monitoring and post-weld heat treatment play a critical role.
The contract involves high specification fabrication of stainless and carbon steel pipework, non-destructive testing, post-weld heat treatment, blasting and LNG specification painting related to the LNG modules for trains 1-3 on the Gorgon Project.
Moreover, since IGS UTEx[R] materials do not affect the substrate's heat affected zone ("HAZ"), no pre- or post-weld heat treatment is required, as is in the case with weld overlay applications.
An important aspect is that the beneficial microstructure should be established also by the post-weld heat treatment.
However, welding of P91 and T91 alloy requires a precise heat control during welding and subsequent post-weld heat treatment (PWHT), and the welds between dissimilar metals should be minimized and if it is absolutely necessary it must be very carefully designed.
As part of its expansion, MIS Arabia recently commissioned additional large size post-weld heat treatment furnace, which was 9 m high, 8.
As part of the expansion, MIS Arabia recently commissioned additional large size post-weld heat treatment furnace with 9 m height, 8.