Making a seamless spherical case

Details Making a seamless spherical case Making a seamless spherical case

1981-07-02

1983-12-06

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With modification or control of temperature of work, tool or...

72 85, 72105, B21D 2216

Patent

active

044185570

ABSTRACT:
A tubular blank is held in a bed, heated on one end, which is then rolled into a semisphere with an integral nipple; an adjacent portion of the blank is subsequently heated and stretch-formed by rolling to obtain a spherical continuation of the semisphere, being continued in a cylindrical portion, preferably with a stepped-down section. The remainder of the blank is then cut off.

REFERENCES:
patent: 2469775 (1949-05-01), Lohmann
patent: 2988805 (1961-06-01), Thompson
patent: 3098461 (1963-07-01), Kinney
patent: 3740986 (1973-06-01), Schmid

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