October 2011, Vol. 238 No. 10


Welding Challenges Of 9-Chrome-Moly Steel

With care taken in the welding process, more efficient power-generating system can be operated today with minimum down time for repairs and maintenance. This is due to the development of alloys and knowledge of their performance and behaviors in varying stress and temperature ranges. The key is in the understanding of these materials by designers and maintenance managers. I have excluded welding engineers from this group because most of the time their knowledge is not in question and often welding engineers are not the final decision makers in these situations. A “combined cycle power plant” is described as a combination of gas turbine generator (Brayton cycle) with turbine exh

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