Method of I-section rolling in continuous mill

Details Method of I-section rolling in continuous mill Method of I-section rolling in continuous mill

1981-01-26

1983-05-03

Husar, Francis S.

Metal deforming

By use of roller or roller-like tool-element

Plural roller-couples

72366, B21B 112

Patent

active

043816584

ABSTRACT:
The method of I-section rolling in a continuous mill includes successive rolling of a bar in horizontal slitting passes, horizontal closed roughing beam passes with alternate directions of the slope of the flange outer sides, vertical reduction passes and finishing universal beam passes; and it also includes working of bent-out live flanges of the bar prior to reversal of the direction of the slope of the flange outer sides in the closed beam passes. All the passes are arranged one after another according to the production process in a combination which provides for producing an I-section. In all the horizontal closed roughing beam passes, the rolling of the bar is effected with the flange outer sides having a slope of 15-100 percent on the live flanges and a slope of 8-12 percent on the dead flanges. In the vertical reduction passes the outer sides of the bar are worked to slopes corresponding to the slopes of the outer sides of the dead flanges of the succeeding horizontal closed roughing beam pass. The bent-out flanges of the bar are worked to slopes corresponding to the slopes of the outer sides of the dead flanges of the succeeding horizontal closed roughing beam pass.

REFERENCES:
patent: 271225 (1883-01-01), Daniels
patent: 1013567 (1912-01-01), Sack
patent: 1302497 (1919-05-01), Barbour
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Takaaki, "Development of Production of Compound Steel Sections and Round Bars", Kinzoku, vol. 45, No. 1, 1975, pp. 72-78.
Krocek, et al., "Possibilities of Beam Rolling in Continuous Mills", Hutnik, vol. 23, No. 1, 1973, pp. 24-25.
Gritsuk, et al., "Production of Wide-Flange I-Beams", Metallurgia Publishing House, 1973, p. 165.
Bakhtinov, et al., "Roll Pass Design", Metallurgizdat, 1953, pp. 586-592.
Polanski, "Pass Relations in the Rolling of Structural Shapes in High Output Mills", Hutnik, vol. 26, No. 5, 1976, pp. 174-181.

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