TURBINE REINFORCED WORN-IN SEAL ELEMENT Russian patent published in 2013 - IPC B22F7/00 F01D11/00 B22F3/12 

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 element comprises bearing part composed of cellular structure and conformable part composed of filler filling cellular structure cells and made up of powder material particles bonded together and with bearing part. Bearing part is made by sintering in vacuum or protective atmosphere of mechanical mix of powders with mean particle size of 15 mcm to 180 mcm and of the following composition, in wt %: Cr - 10.0-18.0, Mo - 0.8-3.7, Fe or Ti or Cu or brass or bronze or combination thereof making the rest. Conformable part is made of mechanical mix of powders with particle size varying from 10 mcm to 150 mcm an of following composition, in wt %: Cr - 14.0-18.0, Mo - 0.7-1.4, Si - 0.2-1.4, Mn - 0.1-0.5, Fe making the rest at the following contents of powder components: smaller than 40 mcm - 30-40%, 40 mcm-70 mcm - 40-50%, 70 mcm - 140 mcm - 10-20%, over 140 mcm making the rest but not over 6%.

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

22 cl, 2 dwg, 1 ex