STRUCTURAL BODY AND PRODUCTION METHOD FOR THE SAME
    82.
    发明申请
    STRUCTURAL BODY AND PRODUCTION METHOD FOR THE SAME 审中-公开
    结构体及其生产方法

    公开(公告)号:US20150071702A1

    公开(公告)日:2015-03-12

    申请号:US14462901

    申请日:2014-08-19

    申请人: Hitachi, Ltd.

    IPC分类号: C21D1/04 B23K37/00

    摘要: The present invention provides a structural body comprising a welded portion of a duplex stainless steel inclusive of an α phase and a Υ phase and an unwelded portion of the duplex stainless steel, wherein an X-ray diffraction intensity for the α phase is higher in a heat affected zone including the welded portion than in the unwelded portion and becomes a local maximum within the heat affected zone. The present invention provides aA production method for a structural body of a duplex stainless steel, wherein a heat affected zone including a welded portion of the structural body is heat-treated between 600° C. and 800° C. while a magnetic field of 1˜10 T is applied to the heat affected zone.

    摘要翻译: 本发明提供了一种结构体,其包括双相不锈钢的焊接部分,包括α相和Ugr; 并且在包括焊接部分的热影响区域中的α相的X射线衍射强度高于未焊接部分中的X射线衍射强度,并且在热影响区域内变为局部最大值。 本发明提供一种双相不锈钢结构体的制造方法,其特征在于,包括结构体的焊接部分的热影响区域在600℃和800℃之间进行热处理,同时磁场为1 〜10 T应用于热影响区。

    METHOD OF PRODUCING ELECTRICAL STEEL SHEET
    87.
    发明申请
    METHOD OF PRODUCING ELECTRICAL STEEL SHEET 有权
    生产电工钢板的方法

    公开(公告)号:US20150027590A1

    公开(公告)日:2015-01-29

    申请号:US14379653

    申请日:2013-02-21

    摘要: A method produces a high strength electrical steel sheet in which a cumulative rolling reduction ratio in rough rolling is 73.0% or more, in which in a hot band annealing step, an annealing condition is selected that satisfies an area ratio of recrystallized grains after hot band annealing of 100%, and a recrystallized grain size of 80 μm to 300 μm, under a condition where annealing temperature is 850° C. to 1000° C., and annealing duration is 10 seconds to 10 minutes, and in which in a final annealing step, an annealing condition is selected that satisfies an area ratio of recrystallized grains after the final annealing of 30% to 95%, and a length in the rolling direction of a connected non-recrystallized grain group of 2.5 mm or less, under a condition where annealing temperature is 670° C. to 800° C., and annealing duration is 2 seconds to 1 minute.

    摘要翻译: 一种方法生产粗轧中的累积压下率为73.0%以上的高强度电工钢板,其中在热带退火工序中,选择满足热轧后再结晶晶粒面积比的退火条件 退火100%,再结晶粒径80μm〜300μm,退火温度为850℃〜1000℃,退火时间为10秒〜10分钟,最终为 退火步骤,选择满足最终退火后的再结晶晶粒的面积比为30%〜95%,连接的未再结晶晶粒组的轧制方向的长度为2.5mm以下的退火条件, 退火温度为670℃〜800℃,退火时间为2秒〜1分钟的条件。