Method of roll forming cylindrical pipe

Details Method of roll forming cylindrical pipe Method of roll forming cylindrical pipe

1985-07-09

1986-12-16

Combs, E. Michael

Metal deforming

Process

Tube making or reshaping

72 51, 72133, 72175, B21D 514

Patent

active

046287213

ABSTRACT:
The method and apparatus for rolling a section of metal plate into a cylindrical pipe section wherein leading and trailing edges of said plate section are pre-crimped to the final desired radius of said cylindrical pipe section, feeding the leading edge of said plate section into a forming mill that includes an overhead mandrel having a radius approximating said final desired radius of said pipe section, forcing said mandrel to deflect along the length thereof during the forming of said plate section between said mandrel and a pair of driven bending roll means whereby said mandrel and said bending roll means are maintained at the same curvature throughout the length thereof and said plate section is uniformly bent along the length thereof to said desired final radius.

REFERENCES:
patent: 2197906 (1940-04-01), Tucker
patent: 2587975 (1952-03-01), Darner
patent: 2612934 (1952-10-01), Dubosclard
patent: 2742078 (1956-04-01), Williams
patent: 2882767 (1959-04-01), Chatfield
patent: 3103965 (1963-09-01), Savory
patent: 3738149 (1973-06-01), Archer
patent: 4304114 (1981-12-01), Wiig

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