Method of making metal tubes

Details Method of making metal tubes Method of making metal tubes

1979-12-19

1982-03-02

Husar, Francis S.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

164114, 164286, 164298, 295262, 295264, 295265, B22D 11126

Patent

active

043172717

ABSTRACT:
A method and apparatus for making metal tubes (12) by centrifugally casting muffs (12) in a rotating mold (10), the inner diameter of which is tapered, having a smaller diameter at the pouring end (14) and a larger diameter at the non-pouring end. The outer diameter of the resulting muff is then machined (30) to form a cylindrical member of uniform diameter along its entire length. The inner diameter is also machined (28) smooth, and the finished muff is then reduced (32,34) in diameter and wall thickness to make a long tube (12).

REFERENCES:
patent: 35884 (1862-07-01), Millholland
patent: 1987201 (1935-01-01), McAllister
patent: 2002415 (1935-05-01), Otto
patent: 2461765 (1949-02-01), Olt
patent: 2659107 (1953-11-01), Bell
patent: 2991541 (1961-07-01), Gieren
patent: 3259975 (1966-07-01), Chapman

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