Warmwalzverfahren, Verfahren zur Herstellung eines Warmbandes, Verfahren zur Herstellung eines Kornorientierten Elektromagnetischen Stahlblechs und Brammenheizausrüstung

Details

Veröffentlichungs-Nr.

EP4768609

Anmeldetag

25. Oktober 2024

Veröffentlichung

5. Juni 2025

Rechtsraum

EP

Abstract

Provided is a method of hot rolling that obtains a good shape for hot-rolled coils. The method of hot rolling of the present disclosure includes hot rolling a slab after heating the slab in a heating furnace. Skids that support and transport the slab shift at least once in the heating furnace. A maximum arrival temperature Ta in °C reached by the slab from when the slab is charged into the heating furnace until prior to undergoing a shift furthest on a slab extraction side of the heating furnace and a maximum arrival temperature Tb in °C reached by the slab after undergoing the shift furthest on the slab extraction side of the heating furnace and until being extracted from the heating furnace satisfy Tb + 80 °C > Ta > Tb + 10 °C. Ta is the maximum arrival temperature reached by the slab in the heating furnace and is 1150 °C or higher. The slab has a chemical composition such that a y phase ratio at Ta is 25 mol% or less.

Anmelder

Firma

JFE Steel Corporation

Land

🇯🇵 Japan