METHOD FOR MAKING BLADES Russian patent published in 1994 - IPC

Abstract RU 2025262 C1

FIELD: plastic working of metals. SUBSTANCE: method involves low-temperature annealing (at 960+20-10

°C) before abrasive machining of the feather profile. After annealing, residual compression stresses are induced in the surface layer of the feather by low-temperature grinding which is carried out by rotating abrasive strip with liberal application of lubricant-coolant. The residual compressive stresses exceed the endurance strength of blades 2 - 2.6 times. Next step is determining distribution of residual stresses in the surface layer and measuring their minimum depth. The surface layer of the blade equal in thickness to the measured depth is removed by low-temperature grinding. EFFECT: higher efficiency. 1 dwg

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RU 2 025 262 C1

Authors

Migunov V.M.

Glikson I.L.

Boguslaev V.A.

Luk'Janov V.S.

Kazanskij V.G.

Dates

1994-12-30—Published

1992-06-22—Filed