FIELD: machine building.
SUBSTANCE: shaft element has at least two shaft sections (15, 16) connected to each other by means of welded seam (23). Sections (15, 16) of the shaft are characterized by different chemical and mechanical properties. Welding seam (23) is formed with ratio (35) of weld seam height to width of weld seam from 1:14 to 1:2. First of at least two shaft sections (15, 16) is made of heat resistant material 1CrMoV; 2CrMoV; 2CrMoNiWV; 10 CrMoWVNbN; 10 CrMoVNbN; 9CrMoCoBNbN or 9Cr3Co3WNbBN.
EFFECT: invention relates to turbo machine (2) shaft element (1), method of its production and turbomachine (2) with shaft element (1).
13 cl, 2 dwg
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