FIELD: process engineering.
SUBSTANCE: invention relates to recovery of turbo machine worn-out labyrinth seals and may be used in repair of various assembly units and parts with such seals, for example, vanes, carcass assembly in aircraft industry, power generation equipment and other machine building branches. Said seals are building-up welding with welding head and filler wire. Welding roll is produced on inclining welding head with filler wire toward part section that features higher heat dissipation. Note here that inclination of welding head with filler wire relative to labyrinth seal knife edge is set between planes of their symmetry to make 8-10°.
EFFECT: vertical position of welded roll that increases quality of repaired article.
3 dwg
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