TOOLS FOR TUBES EXPANSION Russian patent published in 1994 - IPC

Abstract RU 2009746 C1

FIELD: mechanical engineering. SUBSTANCE: a stem and means of fixation of a sleeve on the stem are positioned inside of the sleeve, that is made of material with memory of a form. The sleeve has an outside diameter exceeding initial inside diameter of tube by value of cold tube elastic response. The sleeve butt, contacting with means of fixation, has grooves. The parts of the sleeve with the grooves are slanted to its axis. EFFECT: tools facilitate process of tubes expansion. 3 dwg

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RU 2 009 746 C1

Authors

Ermakov Ju.G.

Dates

1994-03-30—Published

1991-12-20—Filed