METHOD OF MAKING ROTOR BRUSH SEAL Russian patent published in 2013 - IPC B23K31/02 B23K1/05 F16J15/16 

FIELD: process engineering.

SUBSTANCE: invention can be used for making rotor brush seals with the help of electron beam. Circular base and circular thrust plates are assembled to make circular mandrel for wire to be wound thereon and pressed there against by clamping circular rings. Wire is cut over circular outer surface while wire and appropriate seal elements are rigidly jointed together. Note here that pasty solder is applied thereon along the two metal strips so that the latter surround outer circular surface of said seal elements. Strip ends are welded together to make temporary rings. Wire, thrust and clamp rings outer ends are welded to inner surface of appropriate temporary ring. Welding is performed step-by-step with electron beam heating via temporary ring outer surface to temperature of solder binding agent sublimation, then to solder solidus temperature with holding unless formation of solder-to-wire joint and, further, to liquidus temperature with holding to welding termination. Ring base is withdrawn to separate thrust plates to obtain two sets of seals.

EFFECT: higher reliability and longer life of seals.

3 cl, 4 dwg