FIELD: process engineering.
SUBSTANCE: invention relates to metal forming and may be used for production of cup with flange parts. After cutting the billet, head is pre-upset, rod is pre-reduced and cone is formed at rod part adjoining cylinder part under head. Angle of cone being formed equals that of finished cone. Note here that in pre-reduction, conical section is formed by reduction to have length Lp≤din combine with upsetting of conical part with length L0≤dm where dm is diameter of rod part adjoining ball head. Billet diameter dbl is selected from the relationship dbl=(0.8…0.95)dm. At second position, second pre-upset of head and final reduction of rod are carried out along with cone forming. At third position, ball head if finally upset.
EFFECT: higher strength and quality.
1 dwg
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Authors
Dates
2013-06-10—Published
2012-01-10—Filed