PROCESS FOR PREPARING ROLLABLE METAL SHEET FROM QUENCH SOLIDIFIED THIN CAST SHEET AS STARTING MATERIAL

摘要

A method of producing a so-called "rollable metal sheet" having high rollability, essentially comprising the step of supplying continuously molten metal to a cooling member whose cooling surface consists of one or two surfaces and are moved and renewed and quenching and solidifying it to obtain a thin cast sheet, the step of causing small rigid particles to impinge against the surface of the resulting thin cast sheet for working, heating and annealing the sheet so that the worked zone becomes a very fine recrystallized grain layer, and the step of conducting cold or warm rolling after removing surface oxides or the like, whenever necessary, and effecting thermo-mechanical treatment, if necessary. This method can be applied to the production of various rollable metal or alloy sheets such as known soft steel sheets, stainless steel sheets, silicon steel sheets, Ni-Fe sheets, Co-Fe sheets, Ni sheets, Al sheets, and Cu sheets.