发明申请
US20110271733A1 METHOD FOR MANUFACTURING HIGH STRENGTH HOT ROLLED STEEL SHEET 有权
制造高强度热轧钢板的方法

METHOD FOR MANUFACTURING HIGH STRENGTH HOT ROLLED STEEL SHEET
摘要:
A method for manufacturing a high strength hot rolled steel sheet includes heating a slab to a temperature in the range of 1150 to 1300° C.; hot rolling the slab with a finishing rolling temperature being in the range of 800 to 1000° C.; cooling the steel sheet at a mean cooling rate of 30° C./s or higher to a cooling termination temperature in the range of 525 to 625° C.; suspending cooling for a time period in the range of 3 to 10 seconds; cooling the steel sheet in such a manner that cooling of the steel sheet is nucleate boiling; and coiling the steel sheet at a temperature in the range of 400 to 550° C.
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