EP 3650131 A1 20200513 - METHOD FOR MANUFACTURING STEEL H-BEAM
Title (en)
METHOD FOR MANUFACTURING STEEL H-BEAM
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES H-TRÄGERS AUS STAHL
Title (fr)
PROCÉDÉ DE FABRICATION D'UNE POUTRELLE D'ACIER À PROFIL EN H
Publication
Application
Priority
- JP 2017136551 A 20170712
- JP 2018026218 W 20180711
Abstract (en)
A method for producing H-shaped steel, the method includes: a rough rolling step; an intermediate rolling step; and a finish rolling step, wherein: a rolling mill that performs the rough rolling step is engraved with a plurality of calibers configured to shape a material to be rolled; the plurality of calibers include: one or a plurality of split calibers formed with projections configured to create splits vertically with respect to a width direction of the material to be rolled to form divided parts at end parts of the material to be rolled; and a plurality of bending calibers formed with projections configured to come into contact with the splits and sequentially bend the divided parts formed by the split caliber; and the projections formed in a final split caliber of the split calibers are each composed a tip part in a tapered shape having a predetermined tip angle, and a base part located at a base of the tip part and having a tapered shape with a gentle inclination as compared with the tip part.
IPC 8 full level
B21B 1/08 (2006.01); B21B 27/02 (2006.01)
CPC (source: EP US)
B21B 1/088 (2013.01 - EP); B21D 47/01 (2013.01 - US); B21H 8/00 (2013.01 - US)
Citation (search report)
See references of WO 2019013262A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3650131 A1 20200513; CN 110891701 A 20200317; JP 6501047 B1 20190417; JP WO2019013262 A1 20190711; PH 12020500038 A1 20200914; US 2020206802 A1 20200702; WO 2019013262 A1 20190117
DOCDB simple family (application)
EP 18832051 A 20180711; CN 201880046044 A 20180711; JP 2018026218 W 20180711; JP 2018554591 A 20180711; PH 12020500038 A 20200103; US 201816628911 A 20180711