COLD ROLLING MILL FOUR-HIGH STAND Russian patent published in 2005 - IPC

FIELD: rolled stock production, namely equipment for cold rolling of strip steel.

SUBSTANCE: stand, mainly stand of metal sheet rolling mill includes upper and lower rolling and backup rolls mounted in chocks having gaskets in lower chocks. Gaskets have continuous rectangular cross section recesses and projections parallel to roll axes. Contact area of protrusions is determined according to relation: F_k = (0.013 - 0.015)R² x^{r x H2 _s/(R + r)σ_T mm2, where R and r radius values respectively of backup and rolling rolls, mm; H_s = Shore hardness of barrels of backup rolls; σ_T - limit yield of gasket material, MPa. Depth values of recesses are equal to 0.5 - 0.7 of gasket thickness. Recesses are arranged on lower surface of gasket.}

EFFECT: enhanced geometry of rolled strips, shortened duration of rolling mill idling periods.

2 dwg, 1 ex