Metal deforming – By use of roller or roller-like tool-element – Included in roller-cluster
Patent
1979-03-23
1982-06-15
Larson, Lowell A.
Metal deforming
By use of roller or roller-like tool-element
Included in roller-cluster
72234, 72366, B21B 108
Patent
active
043344194
ABSTRACT:
A method for rolling a steel section having flanges or flange-like portions from a steel bloom of rectangular cross section in a rolling mill having a train of roughing rolling stands for roughing, a universal rolling stand with a pair of opposing horizontal rolls and a pair of opposing vertical rolls, and a train of finishing rolling stands for finishing. The method includes rolling the bloom in the train of roughing rolling stands for roughing to a rough shape having a width greater than the shortest distance between the outer circumferences of the opposed vertical rolls in the universal rolling stand and having a reduced almost flat cross section including a portion to be shaped into flanges or flange-like portions in the final product, rolling the rough shape of flat cross section thus obtained in the universal rolling stand for causing the pair of vertical rolls and the pair of horizontal rolls to cooperatively give bending deformation mainly to the portions to be shaped into the flanges or flange-like portions, and finish rolling the rough shape produced from the bending deformation in the finishing rolling stands for finishing.
REFERENCES:
patent: 939168 (1909-11-01), Sack
patent: 1812247 (1931-06-01), Oberg et al.
patent: 4086801 (1978-05-01), Nakajima et al.
Kishikawa Kanichi
Nagasoe Seiichi
Nishino Taneharu
Tokita Hideki
Watanabe Kazuo
Larson Lowell A.
Nippon Steel Corporation
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