Hot rolled steel sheet having ultra fine grains with improved formability, and production of hot rolled or cold rolled steel sheet
Номер патента: CA2271639A1
Опубликовано: 18-03-1999
Автор(ы): Eiko Yasuhara, Masahiko Morita, Osamu Furukimi, Susumu Okada
Принадлежит: Eiko Yasuhara, Kawasaki Steel Corporation, Masahiko Morita, Osamu Furukimi, Susumu Okada
Опубликовано: 18-03-1999
Автор(ы): Eiko Yasuhara, Masahiko Morita, Osamu Furukimi, Susumu Okada
Принадлежит: Eiko Yasuhara, Kawasaki Steel Corporation, Masahiko Morita, Osamu Furukimi, Susumu Okada
Реферат: A hot rolled steel plate to be processed capable of being manufactured easily in a general hot strip mill, and having a low mechanical anisotropy and, moreover, final hyperfine particles of ferrite of less than 2 µm which could not be attained by conventional techniques; and a method of manufacturing the same. This hot rolled steel plate contains ferrite as a main phase, and has an average ferrite particle size of less than 2 µm and an aspect ratio of the same of less than 1.5, the hot rolled steel plate being obtained by carrying out the draft of the steel plate in a dynamic recrystallization zone in a draft path of not less than five stands during a finishing hot rolling operation.
Method of making high strength hot rolled steel sheet having excellent flash butt weldability, fatigue characteristic and formability
Номер патента: US4388122A. Автор: Shunichi Hashimoto,Masatoshi Sudo,Shoji Kambe. Владелец: Kobe Steel Ltd. Дата публикации: 1983-06-14.