METHOD OF TURBINE ROTOR MANUFACTURING OUT OF NICKEL HEAT-RESISTANT ALLOY Russian patent published in 2015 - IPC B23K15/00 B23K31/02 C21D9/50 C22C19/05 C22F1/10 F01D5/06 

FIELD: machine building.

SUBSTANCE: method includes manufacturing of blanks of rotor components out of high strength deformed nickel alloy, preliminary heat treatment of the blanks, their connection by electron-beam welding with weld forming, and final heat treatment of the rotor welded structure. Weld is formed by the welded blanks movement relatively to the radiation source with speed 5-30 m/h, the rotor component blanks are made out of heat-resistant deformed nickel alloy containing in wt %: carbon 0.05-0.07, chrome 14-16, cobalt 15-17, molybdenum 4.5-5, tungsten 1-1.8, niobium 4.2-4.7, total aluminium and titanium 2.5-3, zirconium 0.5-0.8, boron 0.001-0.003, magnesium 0.01-0.03, lanthanum 0.01-0.03 and inevitable admixtures and nickel - rest.

EFFECT: assurance of operability of rotor structure at temperature up to 750 degrees, increased reliability of the welded joints, increased weld and base metal strength.

4 cl, 1 tbl