Patent · US Active

Method for manufacturing a rotor

US8448841B2 · kind B2 · utility

0Cited by

0References

16Claims

0Family size

Assignee

ALSTOM Technology Ltd · CH

Inventors

Ralf Rotzinger · Gernsbach, DE
Sorin Keller · Oberrohrdorf, CH
Jesus Contreras-Espada · Linz, AT

Key dates

Filing date	Nov 30, 2011
Grant date	May 28, 2013
Priority date	—
Expiry date	Nov 30, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K2101/08
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for manufacturing a rotor by welding a plurality of elements together is described. The elements have a body with cavities and surfaces to be welded to surfaces of adjacent elements. According to the method, the elements are vertically stacked one above the other to form a pile with facing surfaces to be welded together defining slots. The cavities of adjacent elements define bores that extend within the pile. Then, adjacent elements are welded together within the slots. The bore is purged with an inert gas or mixture during welding. The slots are welded at an upper part of the bore before the slots at a lower part of the bore, and a slot at the upper part of the bore is welded last.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.