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P. 123
104 Chapter Five
Figure 5.18 Welded reaction tur-
bine rotor after heat treatment.
(Asea Brown-Boveri, Baden,
Switzerland)
Figure 5.19 Evolution of weld preparation Figure 5.20 Microsection of
shapes, 1940 to 1980. (Asea Brown-Boveri, Ba- a rotor weld. (Asea Brown-
den, Switzerland) Boveri, Baden, Switzerland)
