EP 0168300 B1 19880824 - METHOD TO PREVENT SYMMETRY DEFECTS ON GIRDERS WHILE BEING ROLLED ON A MULTI-PURPOSE ROLLING MILL, AND DEVICE FOR CARRYING OUT THIS METHOD
Title (en)
METHOD TO PREVENT SYMMETRY DEFECTS ON GIRDERS WHILE BEING ROLLED ON A MULTI-PURPOSE ROLLING MILL, AND DEVICE FOR CARRYING OUT THIS METHOD
Publication
Application
Priority
FR 8410719 A 19840702
Abstract (en)
[origin: US4586356A] Process and apparatus for preventing defects in the symmetry of rolled H-beams or I-beams, i.e., a faulty position of their webs (4) in relation to their flanges (5), by correcting such defects in situ. The differential between the torques applied to the upper and lower rolls (1,2) of the rolling stand is determined and compared to a predetermined threshhold value ( delta ). Any excess of the measured value over the threshhold value is eliminated by correction of the elevation of the inlet table of the rolling stand so as to reduce the measured value to below the threshhold value.
IPC 1-7
IPC 8 full level
B21B 1/08 (2006.01); B21B 1/10 (2006.01); B21B 37/00 (2006.01); B21B 37/16 (2006.01); B21B 35/12 (2006.01)
CPC (source: EP US)
B21B 1/088 (2013.01 - EP US); B21B 37/165 (2013.01 - EP US); B21B 1/10 (2013.01 - EP US); B21B 35/12 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0168300 A1 19860115; EP 0168300 B1 19880824; AT E36660 T1 19880915; AU 4391485 A 19860109; AU 575174 B2 19880721; BR 8503155 A 19860325; CA 1229901 A 19871201; DE 3564539 D1 19880929; ES 544760 A0 19861201; ES 8701542 A1 19861201; FR 2566684 A1 19860103; FR 2566684 B1 19861219; JP S6120609 A 19860129; US 4586356 A 19860506; ZA 854574 B 19860827
DOCDB simple family (application)
EP 85401196 A 19850617; AT 85401196 T 19850617; AU 4391485 A 19850621; BR 8503155 A 19850701; CA 486050 A 19850628; DE 3564539 T 19850617; ES 544760 A 19850701; FR 8410719 A 19840702; JP 14566385 A 19850702; US 75035685 A 19850701; ZA 854574 A 19850618