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公开(公告)号：EP4382238A1
公开(公告)日：2024-06-12
申请号：EP22867108.7
申请日：2022-07-27
IPC分类号： B23K20/12
CPC分类号： B23K20/12
摘要： An electrical steel strip welded joint is provided that is able to inhibit the occurrence of coil joint fracture on a production line caused by deterioration of mechanical properties and shape of the coil joint.
The steel microstructures of the joined portion and the thermo-mechanically affected zone are mainly ferrite phase, and satisfy the relationships of the following Expressions (1) to (4). Dsz≤200μm Dhaz1≤Dbm1 Dhaz2≤Dbm2 0.9×Hbm1+Hbm2/2≤Hsz≤1.2×Hbm1+Hbm2/2-
2.发明公开
公开(公告)号：EP3915713A1
公开(公告)日：2021-12-01
申请号：EP20763549.1
申请日：2020-02-26
发明人： OKITA, Yasuaki , KITANI, Yasushi
IPC分类号： B23K20/04
摘要： Provided is a slab assembly that is composed of clad raw workpieces each including a base metal plate and a cladding plate stacked together. When the slab assembly is rolled to manufacture clad steel plates, the base metal plates and the respective cladding plate can be bought into sufficiently tight contact with each other, and clad steel plates can be manufactured efficiently and stably.
Two clad raw workpieces are disposed such that their cladding plates face each other, and a release material is interposed between the cladding plates. A spacer is disposed along four sides of cladding plates. Welding is performed along abutting surfaces between each spacer and the base metal plates such that metal welds having respective deepest portions located inside the respective base metal plates are formed. Each abutting surface has a portion in which a corresponding metal weld forms a joint located in a region extending from a surface of the spacer to a position located at 50% or more and less than 100% of the thickness T 5 of the spacer. A width W (mm) of each metal weld along the surface of a corresponding base metal plate, a length D (mm) of a straight line M connecting a center of the width W of the metal weld and its deepest portion, and an angle A(°) between the straight line M and a corresponding abutting surface satisfy D/W ≥ 5 and 1 ≤ A ≤ 15.-
公开(公告)号：EP2929973B1
公开(公告)日：2019-05-29
申请号：EP13860297.4
申请日：2013-12-03
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公开(公告)号：EP2929973A1
公开(公告)日：2015-10-14
申请号：EP13860297.4
申请日：2013-12-03
CPC分类号： B23K9/0213 , B23K9/173
摘要： A method for gas-shielded arc welding to join thick steel materials having a sheet thickness of 22 mm or more by narrow-groove multilayer welding, a bottom portion groove angle being 10° or less, and a bottom portion groove gap being 7-15 mm, includes using two passes or more for initial layer welding, distributing the passes over both sides of the bottom portion groove gap, and controlling a feed angle of a weld wire fed from a power supply tip of a welding torch end to be 5-15° with respect to a perpendicular line so as to set a depth of fusion at a bottom portion of the thick steel materials to be 1.5 mm or more. Even when using low-cost groove formation by gas cutting, plasma cutting, or the like, defects such as high-temperature cracks and lack of fusion can effectively be prevented without treating the groove face.
摘要翻译： 一种气体保护电弧焊接方法，通过窄槽多层焊接，厚度为22mm以上的厚钢材料，底部槽角为10°以下，底部槽间隙为7〜15 mm，包括使用两次或更多次进行初始层焊，分配通过底部槽间隙的两侧的通过，并且控制从焊炬端的供电端供给的焊丝的进给角度为5- 相对于垂直线15°，以使厚钢材的底部的熔融深度为1.5mm以上。 即使在通过气切割，等离子切割等低成本的槽形成的情况下，也可以在不对槽面进行处理的情况下有效地防止高温裂纹，熔融不足等缺陷。
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公开(公告)号：EP4257280A1
公开(公告)日：2023-10-11
申请号：EP21915007.5
申请日：2021-11-19
发明人： HARA, Asato , KITANI, Yasushi
摘要： A laser welding method and a laser welding apparatus used for this method are proposed. In the laser welding method, when Si-containing steel sheets are passed through a continuous processing line, a tail end of a preceding steel sheet and a leading end of a succeeding steel sheet are placed in contact with each other on a line entry side, and while a filler wire is supplied to a contact part, laser is applied and a filler is melted and solidified to weld the Si-containing steel sheets together. This method can reduce the hardness of welded metal more than conventional technologies, to 350 HV0.2 or lower, by injecting a shielding gas containing a He gas or an Ar gas and further containing at least one type selected from a CO 2 gas and an N 2 gas by 10 vol% or higher and 30 vol% or lower in total to a front surface and a back surface of a part being welded, achieving hardness of welded metal HV0.2 of 350 or lower.
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公开(公告)号：EP4035817A1
公开(公告)日：2022-08-03
申请号：EP20867841.7
申请日：2020-09-18
IPC分类号： B23K20/12
摘要： Provided are a double-sided friction stir welding method, methods for producing a cold-rolled steel strip and a coated steel strip, a double-sided friction stir welding apparatus, and facilities for producing a cold-rolled steel strip and a coated steel strip. A double-sided friction stir welding method according to the present invention includes pressing two rotating tools, which are disposed on a first surface and a second surface of a butt portion or overlap portion of the steel strips, against the butt portion or overlap portion of steel strips and moving the rotating tools in the welding direction while rotating the rotating tools in opposite directions to each other, so that an unwelded portion of the steel strips is softened by frictional heat generated between the rotating tools and the unwelded portion of the steel strips, and the softened portion is stirred with the rotating tools to generate plastic flow so as to weld the steel strips together. The two rotating tools each have an end portion formed to have a circular planar shape. The end portions are each made of a material harder than the steel strips.
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7.发明公开DEVICE TO IMPROVE IRON LOSS PROPERTIES OF GRAIN-ORIENTED ELECTRICAL STEEL SHEET 审中-公开VORRICHTUNG ZUR VERBESSERUNG DER EISENVERLUSTEIGENSCHAFTEN EINES KORNORIENTIERTEN ELEKTROSTAHLBLECHS
公开(公告)号：EP2799561A1
公开(公告)日：2014-11-05
申请号：EP12863241.1
申请日：2012-12-25
发明人： OKABE, Seiji , TAKAJO, Shigehiro , KITANI, Yasushi
摘要： Proposed is a device constitution that can reliably carry out refinement of magnetic domains by high-energy-beam irradiation with a laser beam, an electron beam, or the like even when the sheet passing speed of a grain-oriented electrical steel sheet changes. This device scans a high-energy beam in a direction traversing a feed path of a grain-oriented electrical steel sheet having subjected to final annealing so as to irradiate a surface of the steel sheet being passed through with the high-energy beam to thereby perform magnetic domain refinement, the device including an irradiation mechanism for scanning the high-energy beam in a direction orthogonal to the feed direction of the steel sheet, in which the irradiation mechanism has a function of having the scanning direction of the high-energy beam oriented diagonally, relative to the orthogonal direction, toward the feed direction at an angle determined based on a sheet passing speed of the steel sheet on the feed path.
摘要翻译： 提出了即使当取向电工钢板的片材通过速度变化时，也能够通过激光束，电子束等的高能量束照射可靠地进行磁畴的细化的器件结构。 该装置沿着经过最终退火的方向性电磁钢板的进给路径的方向扫描高能束，以照射高能束通过的钢板的表面，从而进行 所述装置包括用于沿与钢板的进给方向正交的方向扫描高能束的照射机构，其中照射机构具有使高能束取向的扫描方向的功能 对角地相对于正交方向以基于钢板在进给路径上的纸张通过速度确定的角度朝向进给方向。
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公开(公告)号：EP2835209B1
公开(公告)日：2016-09-07
申请号：EP13772114.8
申请日：2013-04-04
CPC分类号： B23K20/227 , B23K20/122 , B23K20/1255 , B23K35/3073 , B23K2201/006 , B23K2201/18 , B23K2203/04 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/42 , C22C38/46 , C22C38/50
摘要： When friction-stir welding steel sheets, for the rotating tool, rotation speed RS is set 100-1000 rpm, rotational torque RT 50-500 Nm, and travel speed TS 10-1000 mm/min, and HIPT (kJ/mm 2 ) is controlled to be in a range of 0.3-1.5. The steel sheets that are used have a composition including 0.01-0.2 mass% of C, 0.5-2.0 mass% of Mn, 0.6 mass% or less of Si, 0.030 mass% or less of P, 0.015 mass% or less of S, and 0.0060 mass% or less of O, with a content of Ti [%Ti] and a content of N [%N] being restricted in relation to the HIPT, Ceq being 0.5 mass% or less, and the balance being Fe and incidental impurities. As a result, local change in the frictional heat and plastic flow generated by friction can be prevented, yielding a weld portion with uniform and good toughness.
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9.发明公开NARROW-GROOVE GAS-SHIELDED ARC WELDED JOINT 有权VERBINDUNG ZUM LICHTBOGENSCHWEISSEN在SCHUTZGAS MIT GERINGEM BANDABSTAND
公开(公告)号：EP2929974A1
公开(公告)日：2015-10-14
申请号：EP13860637.1
申请日：2013-12-03
CPC分类号： B23K9/173 , B23K9/0213 , B23K35/30 , B23K35/3053 , B23K35/383 , B23K2201/006
摘要： In a welded joint obtained by multilayer, narrow-groove gas-shielded arc welding of thick steel materials having a sheet thickness of 22 mm or more, setting the depth of fusion at the bottom portion of the thick steel materials to be 1.5 mm or more and the total amount of oxygen (O) and sulfur (S) contained in the weld metal to be in a range of 400 mass ppm or more to 1000 mass ppm or less yields a narrow-groove gas-shielded arc welded joint of thick steel materials that, even when using low-cost groove formation by gas cutting, plasma cutting, or the like, can effectively prevent defects due to high-temperature cracks, lack of fusion, or the like when performing highly efficient narrow-groove gas-shielded arc welding without treatment or the like of the groove face, and that also has a small amount of deposition.
摘要翻译： 在通过多层厚度为22mm以上的厚钢材料的窄槽气体保护电弧焊接而获得的焊接接头中，将厚钢材料的底部的熔融深度设定为1.5mm以上 并且焊接金属中含有的氧（O）和硫（S）的总量在400质量ppm以上至1000质量ppm以下的范围内，产生厚钢的窄槽气体保护电弧焊接接头 即使在通过气割，等离子切割等低成本的凹槽形成的情况下，能够有效地防止高效率的窄槽气体保护用高温裂纹，熔融缺陷等的缺陷 没有处理的电弧焊或类似的凹槽面，并且也具有少量的沉积。
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公开(公告)号：EP2716399A1
公开(公告)日：2014-04-09
申请号：EP12789441.8
申请日：2012-05-16
CPC分类号： B62D27/02 , B23K9/028 , B23K26/1429 , B23K26/244 , B23K2201/006 , B62D21/00 , Y10T403/477
摘要： For the purpose of obtaining an automobile frame component excelling in stiffness, an automobile frame component 1 includes a closed section constituted by welding a flange portion 3a of a frame component 3 having a substantially hat-like sectional shape to a panel part 5 disposed facing the flange portion 3a, wherein when a welding position coordinate is represented in a coordinate system in which an end of a contact position between the flange portion 3a and the panel part 5 is assumed as 0, and a flange outer end side of the flange portion 3a is assumed as negative (-) whereas a vertical wall side in the substantially hat-like shape is assumed as positive (+), and when a radius of a circular arc-like portion 3c connecting a vertical wall portion 3b and the flange portion 3a in the substantially hat-like shape is denoted as R (mm), and a weldable gap amount is denoted as a (mm), a welding position X represented by the following formula is continuously welded using a one-side welding method:
摘要翻译： 为了获得刚性优异的汽车框架部件，汽车车架部件1包括通过将具有大致帽形横截面形状的框架部件3的凸缘部分3a焊接到面对部件5的面板部5而构成的封闭部分 凸缘部3a，其中当在将凸缘部分3a和面板部件5之间的接触位置的末端假定为0的坐标系中表示焊接位置坐标时，凸缘部分3a的凸缘外端侧 假设为负（ - ），而基本上为帽状形状的垂直壁侧假定为正（+），并且当连接垂直壁部3b和凸缘部3a的圆弧状部分3c的半径 基本上为帽状的形状表示为R（mm），可焊接间隙量表示为（mm），由下式表示的焊接位置X使用单面焊接 方法：
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