METHOD FOR MAKING CORRUGATED TUBES

FIELD: plastic working of metals, namely manufacture of single-corrugation bellows with cylindrical shells. ^ SUBSTANCE: method comprises steps of preliminary radial forming of corrugations and axially upsetting of blank in die while applying inner pressure; one or more calibration stages. At least...

Full description

Saved in:
Bibliographic Details
Main Authors GLUKHOV N.P, SHIRJAEV D.A, FEDOTOV V.A, DOBULEVICH V.M
Format Patent
LanguageEnglish
Russian
Published 20.11.2004
Edition7
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
Online AccessGet full text

Cover

More Information
Summary:FIELD: plastic working of metals, namely manufacture of single-corrugation bellows with cylindrical shells. ^ SUBSTANCE: method comprises steps of preliminary radial forming of corrugations and axially upsetting of blank in die while applying inner pressure; one or more calibration stages. At least one calibration operation is realized at placing preliminarily shaped bellows onto cylindrical mandrel and rolling around outer surface of bellows at rotation of mandrel due to radial feed of profiled roller to mandrel axis. Gap value between calibrating surfaces of mandrel and roller is no less than thickness value of bellows. It is possible to use mandrel with radial annular groove and cylindrical roller with radial annular protrusion. ^ EFFECT: enhanced quality of single-corrugation bellows due to lowered thickness difference of cylindrical shells and recess of corrugation. ^ 4 cl, 2 dwg, 1 ex
Bibliography:Application Number: RU20030106580