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| Abstract No.: |
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Scheduled at:
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Tuesday, March 27, 2012, SuperC, Hall Ford 11:35 AM
Applications/Efficiency 2
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| Title: |
The use of electron beam welding in turbomachinery manufacturing
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| Authors: |
John Rugh* / PTR-Precision Technologies, Inc., USA
Gary LaFlamme / PTR-Precision Technologies, Inc., USA
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| Abstract: |
As demands for higher performance migrated from aircraft engines to land based gas turbines the need for EB welding came along also. The transfer of EB welding processes from relatively thin section components in aircraft turbines to land based aero derivative turbines is straightforward since the sizes and materials of both aero and aero derivative components are the same or similar. However, components of non-aero derivative land based gas turbines and steam turbines do not have the same weight restrictions of flight hardware. Therefore, much larger components with much thicker welds are encountered. The environments, performance and cost demands of land based turbomachinery are also different, which leads to different materials being used to manufacture components.
Examples of a variety of gas turbine, steam turbine and turbo compressor components that are EB welded are provided along with some of the techniques and equipment employed to EB weld them. Applications with welds as thin as 1.5 mm to over 100 mm in thickness and components from 1 kg to over 1000 kg are shown along with material combinations used in this industry.
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