METHOD FOR PRODUCING STEEL H-BEAM, AND ROLLING MILL

WIPO Patent Application WO/2017/119196

A1

[Problem] To realize efficient and stable production of a steel H-beam product having a greater flange width than conventional products, and to manufacture large-flanged steel H-beams of different flange widths using the same roll. [Solution] A rolling machine that carries out a rough rolling step has engraved therein a plurality (seven or more) of grooves for shaping a material to be rolled. These grooves comprise: a plurality of dividing grooves serving as first-stage grooves provided with a protruding section for forming a cut in a direction perpendicular to the width direction of the material to be rolled; and a plurality of bending grooves serving as subsequent-stage grooves for bending flange-equivalent parts of the material to be rolled, which are formed by the dividing grooves. The dividing grooves each have two types of grooves for forming cuts of different lengths. The bending grooves have grooves having dimensions that match those of the two types of flange-equivalent parts of different lengths that have been formed, by the dividing grooves, in the material to be rolled. At the bending grooves, reduction of pressure is carried out in the shaping by one or more passes while the edge surface of the material to be rolled and the groove peripheral surface are in contact with each other.

YAMASHITA HIROSHI (JP)

PCT/JP2016/084141

July 13, 2017

November 17, 2016

Click for automatic bibliography generation  

NIPPON STEEL & SUMITOMO METAL CORP (JP)

B21B1/08; B21B1/088; B21B27/02

WO2016148030A1

2016-09-22

JPS589701A	1983-01-20
JPH11347601A	1999-12-21
JPH07265901A	1995-10-17
JP2004322105A	2004-11-18
JP2016175098A	2016-10-06
JPH0788501A	1995-04-04
JPS6021101A	1985-02-02

See also references of EP 3388160A4

HAGIWARA, Yasushi et al. (JP)

View/Download PDF      PDF Help

Previous Patent: METHOD FOR PRODUCING STEEL H-BEAM, AND STEEL H-BEAM PRODUCT

Next Patent: DISTORTION SENSOR ELEMENT