METHOD OF FABRICATING TURBINE RUN-IN CELLULAR SEAL Russian patent published in 2012 - IPC B22F3/10 F01D11/08 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to turbo machine flow section seals operated at higher temperatures and high-frequency oscillations. Proposed method comprises sintering preset size and shape rods from run-in material powders, applying high-temperature solder on their surface to produce shell on every rod, orienting said rods perpendicular to element base, and, finally, sintering seal element rods to make solid carcass from rod shells. Aforesaid run-in material represents a mechanical mix of allow powder containing the following components, in wt %: Cr - 10.0 to 18.0%, Mo - 0.8 to 3.7%, Fe or Ti or Cu or combination thereof making the rest, or allow containing: Cr - 18% to 34%; Al - 3% to 16%; Y - 0.2% to 0.7%; Ni making the rest, or alloy containing: Cr - 18% to 34%; Al - 3% to 16%; Y - 0.2% to 0.7%; Co - 16% to 30%; Ni making the rest, with particle size varying from 15 mcm to 180 mcm, with powders of hexagonal boron nitride and calcium fluoride.

EFFECT: higher run-in properties, mechanical strength and wear resistance.

24 cl, 3 dwg, 1 ex