Slab heating method of oriented electrical steel sheet to reduce edge crack

摘要

An object of the present invention is to provide a heating method of a steel slab for reducing edge cracks when manufacturing a grain-oriented electrical steel sheet using a moving beam type heating furnace.;The present invention for achieving the above object is a method of manufacturing a conventional grain-oriented electrical steel sheet using a moving beam type heating furnace, the atmosphere of the heating furnace in the volume ratio of (H ₂ + CH ₄ + CO + CnHn) / O ₂ The technical gist of the slab heating method for a grain-oriented electrical steel sheet for reducing edge cracks, characterized in that the 0.95 ~ 1.2.