METHOD OF MANUFACTURING SLEEVE-TYPE PARTS Russian patent published in 1994 - IPC

Abstract RU 2025190 C1

FIELD: plastic working of metals. SUBSTANCE: method involves producing part in a single working stroke of press. Intermediate billet is at first produced by direct extrusion through die onto mandrel with reduced friction force on outer surface of extruded portion of intermediate billet, with part of its bottom being left in die. Then billet walls are calibrated by acting on billet in opposite direction by mandrel. EFFECT: high quality of parts and increased efficiency of method. 3 cl, 2 dwg

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RU 2 025 190 C1

Authors

Lubjanskij V.I.

Basalaev Eh.P.

Dates

1994-12-30—Published

1992-04-10—Filed