MANUFACTURING METHOD OF ENVELOPES BY MEANS OF ROTARY EXTRUSION

摘要

FIELD: metallurgy. ^ SUBSTANCE: by means of rotary extrusion of rotary blank by rolling rollers there are received maximum possible thickenings or thinning by wall thickness of envelopes. Additionally clearance between rollers and holder-up are corrected for value, specified by presented correlation formula from calculation of permissible errors. ^ EFFECT: it is improved quality with required by minor diametre thickening. ^ 1 dwg, 1 ex