How to weld the rotor for power generation equipments

Japanese Patent JP5933620

B2

The invention relates to a method for welding rotors (30) for power generation (gas turbines, steam turbines, generators), which comprise a plurality of rotor discs (26, 27) arranged along a rotor axis (34), said method comprising the steps of: providing said discs (26) with a weld seam preparation, said weld seam preparation comprising a root (33), a first, gap-like welding section (32) adjoining said root (33) in radial direction, and a second, gap-like welding section (31) adjoining said first welding section (32) in radial direction; melting the root (33) by means of a first welding process; making a weld in said first welding section (32) by means of a second welding process; and filling up said second welding section (31) by means of a third welding process. A simplification and flexibilization of the manufacturing method is achieved by choosing said first welding process to be one of Laser Welding (LW), Electron Beam welding (EB), friction welding and laser hybrid welding and/or said second welding process is one of Laser Welding or laser hybrid welding.

WO/2013/153430	PORTABLE BORING MACHINE
WO/2015/124999	METHOD AND SYSTEM TO USE COMBINATION FILLER WIRE FEED AND HIGH INTENSITY ENERGY SOURCE FOR WELDING WITH CONTROLLED ARCING FREQUENCY

Zorin Keller
Weiner Martin Barbach
Claus Paul Geades

JP2014077840A

June 15, 2016

April 04, 2014

Click for automatic bibliography generation  

General Electric Technology GmbH

B23K28/02; B23K9/00; B23K9/167; B23K9/173; B23K15/00; B23K20/12; B23K26/21; B23K26/348; B23K33/00; F01D5/06; F01D25/00; F02C7/00

JP9052183A
JP2008215181A
JP7214308A
JP2011161459A
JP2002001557A

Einzel Felix-Reinhard
Hiroyasu Ninomiya

Previous Patent: An alpha * amylase mutant and its directions for use of Bacillus subtilis origin

Next Patent: JPS5933621