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    • 1. 发明公开
    • 용접 구조물
    • 焊接结构
    • KR1020140028506A
    • 2014-03-10
    • KR1020120094929
    • 2012-08-29
    • 주식회사 포스코
    • 안규백노병두류강묵
    • B23K31/02B23K31/12
    • According to an embodiment of the present invention, the invention comprises an insert hole and a blocking member. The insert hole is formed on a remnant of butt-welded basic material and which provides a curved part having the curvature on one side. The blocking member is formed into a shape corresponding to the insert hole and is inserted into the insert hole to prevent brittle crack from being propagated to a welding part of the basic material. Also, the blocking member has more than 6000 N/mm3/2 of Kca according to an embodiment of the present invention.
    • 根据本发明的实施例,本发明包括插入孔和阻挡构件。 插入孔形成在对焊基材的残留物上,并且在一侧提供具有曲率的弯曲部分。 阻挡构件形成为与插入孔对应的形状,并插入到插入孔中,以防止脆性裂纹传播到基材的焊接部分。 此外,根据本发明的实施例,阻挡构件具有超过6000N / mm 3/2的Kca。
    • 2. 发明公开
    • 용접 구조물 및 그 제작방법
    • 焊接结构及其制造方法
    • KR1020120111436A
    • 2012-10-10
    • KR1020110029893
    • 2011-03-31
    • 주식회사 포스코
    • 류강묵안규백
    • B23K31/02B63B3/26B63B9/00
    • PURPOSE: A welded structure and a manufacturing method thereof are provided to effectively block the straight propagation of brittle crack by using a high-toughness material and to improve the fatigue strength of a plate by reinforcing the stress-concentrated portion of a through hole. CONSTITUTION: A welded structure comprises a plate(10) and a brittle crack propagation blocking unit(30). The plate is formed by butt welding unit plates(10a). The brittle crack propagation blocking unit blocks the propagation of brittle crack by passing through one or more points of a butt weld zone(20) of the plate.
    • 目的:提供焊接结构及其制造方法,以通过使用高韧性材料有效地阻止脆性裂纹的直线传播,并且通过增强通孔的应力集中部分来提高板的疲劳强度。 构成:焊接结构包括板(10)和脆性裂纹传播阻挡单元(30)。 板由对接焊单元板(10a)形成。 脆性裂纹传播阻挡单元通过穿过板的对接焊缝区域(20)的一个或多个点来阻止脆性裂纹的传播。
    • 3. 发明公开
    • 용접 구조물 및 그 제작방법
    • 焊接结构及其制造方法
    • KR1020120009900A
    • 2012-02-02
    • KR1020100070943
    • 2010-07-22
    • 주식회사 포스코
    • 류강묵안규백
    • B23K31/02B23K31/12
    • PURPOSE: A welded structure and a manufacturing method thereof are provided to prevent brittle cracks from spreading by forming a brittle crack spreading cutoff hole in a welded joint part. CONSTITUTION: A welded structure(1) comprises a brittle crack spreading cutoff hole(30), first and second plate members, and a middle plate member. The plate members are prepared through the butt welding of unit plate members. The middle plate member is welded between the first and second plate members. The brittle crack spreading cutoff hole is formed in the butt welded part(20) of the first and second plate members.
    • 目的:提供一种焊接结构及其制造方法,以通过在焊接接头部中形成脆性裂纹扩展截止孔来防止脆性裂纹扩展。 构成:焊接结构(1)包括脆性裂纹扩展截止孔(30),第一和第二板构件以及中间板构件。 板构件通过单元板构件的对接焊接来制备。 中间板构件焊接在第一和第二板构件之间。 脆性裂纹扩展截止孔形成在第一和第二板构件的对接部分(20)中。
    • 6. 发明公开
    • 노치 임팩터
    • NOTCH IMPACTOR
    • KR1020150075002A
    • 2015-07-02
    • KR1020130163286
    • 2013-12-24
    • 주식회사 포스코
    • 류강묵노병두김극
    • G01N3/307G01N3/08G01M7/08
    • G01N3/307G01M7/08G01N2203/0048G01N2203/0067
    • 본발명은유체압실린더에작동유체를공급함으로써타격블록이충격하중을전달받아시편에대해충격하중을가하는노치임팩터에관한것으로, 타격블록은유체압실린더의피스톤으로부터타격을받는본체; 충격하중의방향으로본체로부터연장되고외주면에나사산이형성된원기둥형상의연결부; 내주면에나사산이형성되어일측에서연결부와나사체결되는원통형상의쐐기홀더; 및이 쐐기홀더의타측에고정되어시편과접촉하는쐐기부를포함하여서, 노치임팩터의쐐기부를회전할수 있게함으로써보다정확한시편의파괴인성을평가할수 있어충격시험의신뢰도를한층높일수 있는효과가있게된다.
    • 本发明涉及一种通过向液压缸供给工作流体来使撞击块施加受试冲击载荷的切口冲击器。 撞击块包括:由液压缸的活塞撞击的主体; 圆筒形连接部件,其从所述主体沿所述冲击载荷的方向延伸,并且由外周部螺纹连接; 一个圆柱形的楔形保持架,由一个内圆周螺纹连接到一个连接部分; 以及固定在楔形保持器的另一侧以与样品接触的楔形部分。 因此,槽口冲击器精确地测试试件的断裂的韧性,并且通过允许凹口冲击器的楔形部分旋转来提高冲击试验的可靠性。
    • 7. 发明公开
    • 조관 방법 및 C 성형기
    • 管道制造方法和C制造装置
    • KR1020140082517A
    • 2014-07-02
    • KR1020120152606
    • 2012-12-24
    • 주식회사 포스코
    • 송우현류강묵
    • B21D5/10B21C37/08
    • B21D5/10B21C37/08
    • Provided is a C crimping device capable of bending both edges of a sheet in a width direction in order to secure the roundness without affecting the performance of a steel pipe, including an upper forming unit having a pair of C-forming portions having a curved surface at a position corresponding to both edges of the sheet in the width direction, and a center forming portion disposed between the C-forming portions and having a protruding curved surface facing the bottom surface; and a lower forming unit having a curved surface corresponding to the shape of the C-shaping portions and the center shaping portion.
    • 本发明提供一种能够在宽度方向上弯曲薄片的两个边缘以便确保圆形度而不影响钢管的性能的C压接装置,其包括具有一对具有弯曲表面的一对C形成部分的上部成形单元 在对应于宽度方向上的片材的两个边缘的位置和设置在C形成部分之间并具有面向底面的突出弯曲表面的中心形成部分; 以及具有与C形成部分和中心成形部分的形状对应的曲面的下部成形单元。