一种控制含铌或硼包晶钢边裂的方法

Method for controlling edge cracks of peritectic steel containing niobium or boron

Abstract

The invention relates to a method for controlling incidence and generation position of edge cracks of a peritectic steel medium plate containing niobium or boron. The method comprises the following steps: smelting and controlling the contents of the following components in molten steel by weight percent: 0.14-0.17% of C, 0.015-0.035% of Nb or 0.0009-0.0013% of B; continuously casting and forming blanks; selecting the blanks, namely conventionally heating the casting blanks; rolling; and conventionally carrying out post processes. The method can be used for controlling the extension of the edge cracks of the medium plate to the center from angle parts by optimizing the size of the casting blank material under the condition that the existing continuous casting machine equipment and process are not changed, thereby reducing the quantity of disqualified products caused by the edge cracks of the medium plate, reducing the edge cutting amount of the medium plate, and further improving the yield.
本发明涉及含铌、硼包晶钢中厚板边部裂纹发生率及产生位置的控制方法。其步骤:进行冶炼,并控制最终钢液中的如下成分的重量百分比为:C:0.14~0.17%,Nb:0.015~0.035%,或B:0.0009~0.0013%;连铸成坯;选坯:对铸坯进行常规加热;轧制;按常规进行后工序。本发明在现有连铸机设备、工艺不变的条件下,能通过优化铸坯料的尺寸,控制中厚板边裂由角部向宽度中心扩展的现象,减少中厚板因边裂造成的不合格品,并能减少中厚板的切边量,从而提高成材率。

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    CN-101412082-AApril 22, 2009攀钢集团研究院有限公司;攀枝花钢铁(集团)公司;攀枝花新钢钒股份有限公司防止中碳高锰钢裂纹的生产方法
    CN-101683685-AMarch 31, 2010鞍钢股份有限公司Production technology of microalloying wide and thick continous casting slab
    CN-101831526-ASeptember 15, 2010宁波钢铁有限公司Method for processing super-thick plate
    US-2008295920-A1December 04, 2008Tatsuya Kumagai, Masaaki FujiokaHigh Tension Steel Plate with Small Acoustic Anisotropy and with Excellent Weldability and Method of Production of Same

NO-Patent Citations (0)

    Title

Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-103611907-AMarch 05, 2014首钢总公司一种综合控制厚板坯中碳含铌钢窄面侧裂的方法
    CN-104741560-AJuly 01, 2015首钢总公司Method of reducing cross cracks at niobium-containing steel angle part