Metal deforming – By use of roller or roller-like tool-element – Including tautening of work during deformation
Patent
1979-09-20
1981-09-29
Mehr, Milton S.
Metal deforming
By use of roller or roller-like tool-element
Including tautening of work during deformation
72366, 72199, B21B 128, B21B 3908
Patent
active
042915627
ABSTRACT:
Metal strip is made by heating a workpiece to an elevated temperature, wrapping it around a substantial arc of a first roll, positioning a second roll with respect to the first roll to provide a roll pass therewith at the exit end of the wrap, positioning a third roll with respect to the second roll to provide a second roll pass to give the desired strip thickness with the workpiece engaging a substantial arc of the second roll between the roll passes, the arc of wrap around each of the first and second rolls being less than 90.degree.. The second roll is rotated at a peripheral speed substantially greater than that of the first roll and the third roll is rotated at a peripheral speed at least as great as that of the second roll. A ferrous base hot rolled strip having a width of at least 20 inches, a maximum thickness of 0.04 inches and a length of at least 80 feet is obtainable by this method.
REFERENCES:
patent: 1943005 (1934-01-01), Coryell
patent: 2166418 (1939-07-01), McBain
patent: 2291361 (1942-07-01), Walsh
patent: 2316067 (1943-04-01), Hickman
patent: 2332796 (1943-10-01), Hume
patent: 2526296 (1950-10-01), Stone
patent: 2742949 (1956-04-01), Nilsson
patent: 3238756 (1966-03-01), Coffin, Jr.
patent: 3253445 (1966-05-01), Franek
patent: 3823593 (1974-07-01), Xydrin et al.
"Shear Rolling, A New Cold Rolling Method", Hollmann & Pawelski, Stahl & Eisen 99 (1979) Nr. 6 at p. 227.
Carroll Martin J.
Mehr Milton S.
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