METHOD FOR MAKING HOLLOW THIN-WALL PARTS

摘要

FIELD: plastic working of metal, possibly manufacture of hollow thin-wall parts. ^ SUBSTANCE: method comprises steps of producing initial blank; calibrating it; then pressing it out and drawing. Near-bottom cylindrical portion of wall and bottom portion are shaped in die. Diameter of said die is less than diameter of part by value of elastic deformation of wall of near-bottom portion of part. ^ EFFECT: improved quality of ready part. ^ 4 dwg, 1 ex