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公开(公告)号：EP2543982B1
公开(公告)日：2018-05-30
申请号：EP11765957.3
申请日：2011-04-06
CPC分类号： G01N3/00 , B23K11/11 , B23K31/125 , G01N2203/0212 , G01N2203/0296
摘要： Maximum allowable load values of a welded portion in respective fracture modes of a load fracture, a moment fracture, and a nugget interior fracture are found based on at least one of a sheet thickness t, a tensile strength TS, an elongation El, and a chemical composition of a nugget portion in each of spot-welded steel sheets, a nugget diameter d of a welded portion, an effective width B of the welded portion determined by a distance between adjacent welded portions, edges or ridge lines, and a sectional height H. Then, according to these fracture modes, an allowable load value at every moment after the maximum allowable load value of the welded portion is reached is found, and a displacement or a time at which the allowable load value becomes 0, that is, at which a complete fracture occurs is found, thereby finding a fracture limit.
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2.发明公开METHOD FOR PRODUCING PRESS-MOLDED PRODUCT, PRESS-MOLDED PRODUCT, AND PRESSING DEVICE 审中-公开生产压模产品的方法，压模产品和压模装置
公开(公告)号：EP3287205A1
公开(公告)日：2018-02-28
申请号：EP16783250.0
申请日：2016-04-21
摘要： A pressed component manufacturing method of the present disclosure includes a first process of pressing a blank to form an intermediate formed component configured including a top plate, the ridge lines at short direction ends of the top plate, and vertical walls facing each other in a state extending from the respective ridge lines and at least one of the vertical walls configuring a curved wall curving as viewed from an upper side of the top plate, such that a step projecting toward an opposite side to a side on which the vertical walls face each other is formed to the curved wall so as to run along a length direction of the top plate. The manufacturing method further includes a second process of performing at least one out of pressing the intermediate formed component so as to narrow a projection width of the step, or pressing the intermediate formed component so as to move a portion of the curved wall on an opposite side of the step to a portion of the curved wall on the top plate side of the step toward the opposite side to the side on which the vertical walls face each other.
摘要翻译： 本发明的挤压部件制造方法包括：挤压坯料以形成中间成形部件的第一工艺，该中间成形部件包括顶板，顶板的短边方向端部处的棱线以及处于状态的彼此面对的竖直壁 从所述各棱线延伸，并且至少一个所述竖直壁构成从所述顶板的上侧看弯曲的弯曲壁，使得朝向所述竖直壁彼此面对的一侧的相对侧突出的台阶 形成在弯曲壁上以沿着顶板的长度方向延伸。 该制造方法还包括执行挤压中间成形部件中的至少一个以缩小台阶的突出宽度或者挤压中间成形部件以便使弯曲壁的一部分在相对的 所述台阶的所述一侧朝向所述台阶的所述顶板侧上的所述弯曲壁的一部分朝向所述垂直壁相互面对的一侧的相反侧。
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3.发明授权HIGH-STRENGTH COLD-ROLLED STEEL SHEET WITH HIGHLY UNIFORM STRETCHABILTY AND EXCELLENT HOLE EXPANSIBILITY, AND PROCESS FOR PRODUCING SAME 有权具有高度均匀伸缩性和优异孔扩张性的高强度冷轧钢板及其生产工艺
公开(公告)号：EP2700728B1
公开(公告)日：2017-11-01
申请号：EP12774097.5
申请日：2012-04-19
发明人： TODA, Yuri , OKAMOTO, Riki , FUJITA, Nobuhiro , SANO, Kohichi , YOSHIDA, Hiroshi , OGAWA, Toshio
IPC分类号： C21D8/02 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/16 , C22C38/28 , C22C38/38 , C23C2/02 , C23C2/06 , C23C2/28 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/22 , C23C2/40 , C22C38/32
CPC分类号： C23C2/06 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D9/46 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/38 , C23C2/02 , C23C2/28 , C23C2/40 , Y10T428/12799
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公开(公告)号：EP3412375A1
公开(公告)日：2018-12-12
申请号：EP16889424.4
申请日：2016-12-15
摘要： A method for manufacturing a tubular member has: a step of disposing a steel pipe which is a material in an outer die having an inner surface having the same shape as an outer form of the tubular member with at least a part of the steel pipe being separated from the inner surface; and a step of compressing the steel pipe in the axial direction by decreasing a relative distance between a pair of pressurizing dies that respectively abut both end surfaces of the steel pipe in the axial direction in a state where a core die portion having an outer surface shape that is the same as inner surface shapes of the both end portions of the tubular member in the axial direction is inserted between the pair of pressurizing dies with at least a part of the core die portion being separated from the inner surface of the steel pipe.
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5.发明公开STRETCH-FLANGE CRACK PREDICTION METHOD, STRETCH-FLANGE CRACK PREDICTION DEVICE, COMPUTER PROGRAM, AND RECORDING MEDIUM 审中-公开用于预测DEHNUNGSFLANSCHRISSEN，装置于预测DEHNUNGSFLANSCHRISSEN，计算机程序和记录介质
公开(公告)号：EP3165298A1
公开(公告)日：2017-05-10
申请号：EP15815590.3
申请日：2015-07-02
CPC分类号： G06F17/5018 , B21D22/00 , B21D22/201 , G06F2217/16 , G06F2217/42 , Y02T10/82
摘要： A stretch flange crack prediction method of predicting initiation of stretch flange cracks that occurs in a flange end section during stretch flange forming of a deformable sheet, includes: a measurement value acquisition process of acquiring, for each of a plurality of sheet-shaped test pieces, a fracture strain measurement value, a normal strain gradient measurement value, and a circumferential strain gradient measurement value; a CAE analysis process of acquiring a maximum major strain maximum element having a highest maximum major strain, a normal strain gradient of the maximum major strain maximum element, and a circumferential strain gradient of the maximum major strain maximum element; a fracture determination threshold acquisition process of acquiring a fracture determination threshold by converting the fracture strain measurement value; and a prediction process of predicting that stretch flange cracks will be initiated, when the maximum major strain is equal to or higher than the fracture determination threshold.
摘要翻译： 预测拉伸凸缘裂纹的萌生的拉伸凸缘裂纹的预测方法那样拉伸凸缘期间的可变形片材的形成在一个法兰端部的发生，包括：获取的测量值获取处理中，对于每个片状试验片的多个 ，断裂应变测定值，一个正常的应变梯度的测量值，和一个周向应变梯度测量值; 获取具有最高的最大主应变，最大主应变的最大元件的正常应变梯度，最大主应变的最大元件的周向应变梯度的最大主应变的最大元件的CAE分析处理; 通过将断裂应变测量值取得的断裂判定阈值的断裂判定阈值获得过程; 和的预测没有拉伸凸缘裂纹的预测处理将被启动，当最大主应变比断裂判定阈值或更高。
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公开(公告)号：EP3388538A1
公开(公告)日：2018-10-17
申请号：EP16872881.4
申请日：2016-11-30
CPC分类号： B21D22/20 , C21D8/0236 , C21D9/48 , C21D2211/005 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14
摘要： The following is provided based on the disclosure: a method of producing a molded product: including treating a metal sheet having a bcc structure and a surface that satisfies either of the following conditions (a) or (b); and molding the metal sheet to cause plane strain tensile deformation and biaxial tensile deformation and allowing at least one part of the metal sheet to have a sheet thickness decrease rate of from 10% to 30%: (a) an area fraction of crystal grains having a crystal orientation of 15° or less relative to a (001) plane parallel to a surface of the metal sheet is from 0.20 to 0.35; (b) the area fraction of crystal grains having a crystal orientation of 15° or less relative to a (001) plane parallel to a surface of the metal sheet is 0.45 or less, and the average crystal grain size thereof is 15 µm or less; or a molded product that satisfies either of the conditions (a) or (b).
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7.发明公开METHOD FOR PRODUCING PRESS-MOLDED PRODUCT, PRESS-MOLDED PRODUCT, DIE AND PRESSING DEVICE 审中-公开生产压模产品，压模产品，模具和压制装置的方法
公开(公告)号：EP3275566A1
公开(公告)日：2018-01-31
申请号：EP16783249.2
申请日：2016-04-21
摘要： A manufacturing method for a pressed component of the present disclosure is a manufacturing method for a pressed component configured including an elongated top plate, ridge line portions at both short direction ends of the top plate, and vertical walls that face each other in a state extending from the ridge line portions. A punch and a die are employed to curve a blank into a convex profile bowing from the punch side toward the die side in a state in which the punch is caused to contact a first portion of the blank where the two end ridge line portions are to be formed, and to sandwich a second portion of the blank where the top plate is to be formed between the die and the punch and indent the second portion from the die side toward the punch side.
摘要翻译： 本发明的被按压部件的制造方法是一种被加压部件的制造方法，该被加工部件包括细长的顶板，在该顶板的短边方向两端的棱线部，以及以延伸的状态相对的纵壁 来自脊线部分。 冲头和冲模被用于在使冲头与两端脊线部分所在的坯料的第一部分接触的状态下将坯料弯曲成从冲头侧朝向冲模侧弯曲的凸形轮廓 并且将要形成顶板的第二部分夹在模具和冲头之间，并将第二部分从模头侧朝冲头侧缩进。
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8.发明公开METHOD FOR PRODUCING PRESS-MOLDED PRODUCT, PRESS-MOLDED PRODUCT, AND PRESSING DEVICE 审中-公开生产压模产品的方法，压模产品和压模装置
公开(公告)号：EP3272438A1
公开(公告)日：2018-01-24
申请号：EP16783251.8
申请日：2016-04-21
摘要： A pressed component manufacturing method according to the present disclosure is a method for manufacturing a pressed component including an elongated top plate, a wall having one end connected to a short direction end portion of the top plate, that curves with a convex shape bowing toward an opposite side to the top plate as viewed from an upper side of the top plate, and that includes a sharp curve portion, and a flange that is connected to another end of the wall, and that extends in a plate thickness direction of the wall toward the opposite side to the top plate side. The manufacturing method includes a first process of pressing to form an intermediate formed component including a preliminary flange. The manufacturing method also includes a second process of pressing to deform the preliminary flange such that an angle of a corner formed between a specific portion of the preliminary flange connected to the sharp curve portion and the sharp curve portion progressively increases or decreases at respective portions from one end to another end along the length direction, so as to form the preliminary flange into the flange.
摘要翻译： 本发明的挤压部件的制造方法是一种挤压部件的制造方法，该挤压部件包括：细长的顶板;一端与顶板的短边方向的端部连接的壁部，该壁部以朝向 从顶板的上侧看与顶板相反的一侧，并且包括尖锐的弯曲部分以及连接到该壁的另一端的凸缘，该凸缘沿着壁的板厚方向朝向 与顶板侧相反的一侧。 该制造方法包括第一步骤，即压制以形成包括初步凸缘的中间成形部件。 该制造方法还包括第二过程，该第二过程通过按压以使初步凸缘变形，使得连接到尖锐弯曲部分的初始凸缘的特定部分与尖锐弯曲部分之间形成的拐角的角度逐渐增大或减小 沿着长度方向的一端到另一端，以便将初步凸缘形成到凸缘中。
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公开(公告)号：EP3208487A1
公开(公告)日：2017-08-23
申请号：EP15851586.6
申请日：2015-10-16
CPC分类号： B62D21/15 , B60R19/34 , B62D21/152 , B62D21/157 , B62D25/00 , F16F7/00 , F16F7/12 , F16F2224/0233
摘要： An impact absorbing member 10 able to secure absorption energy while lightening weight by absorbing the impact load applied in the axial direction by periodic buckling, wherein the impact absorbing member 10 is provided with a main body 20 comprised of metal sheet and having a polygonal shape in cross-section vertical to an axial direction and a center sheet 30 comprised of metal sheet and provided at a hollow part in the main body along the axial direction, the polygonal shape of the main body 20 includes a pair of long side (20a, 20b) facing each other, the center sheet 30 is joined to each of the long sides (20a, 20b) of the polygonal shape of the main body 20, and the sheet thickness t1 (mm) of the main body 20 and the sheet thickness t2 (mm) of the center sheet 30 satisfy 1.3×t1≤t2.
摘要翻译： 本发明提供一种冲击吸收部件10，其能够通过周期性屈曲吸收沿轴向施加的冲击载荷来减轻重量，同时确保吸收能量，其中冲击吸收部件10具备由金属板构成的主体部20， 与轴向垂直的横截面以及由金属片构成并且沿着轴向方向设置在主体中的中空部分的中心片30，主体20的多边形形状包括一对长边20a，20b ）彼此相对时，中心片30与主体20的多边形形状的长边（20a，20b）中的每一个接合，并且主体20的片厚度t1（mm）和片厚度t2 （mm）满足1.3×t1≤t2。
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10.发明公开
公开(公告)号：EP2700728A1
公开(公告)日：2014-02-26
申请号：EP12774097.5
申请日：2012-04-19
发明人： TODA, Yuri , OKAMOTO, Riki , FUJITA, Nobuhiro , SANO, Kohichi , YOSHIDA, Hiroshi , OGAWA, Toshio
CPC分类号： C23C2/06 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D9/46 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/38 , C23C2/02 , C23C2/28 , C23C2/40 , Y10T428/12799
摘要： This high-strength cold-rolled steel sheet having excellent uniform elongation and hole expandability contains, C: 0.01 to 0.4%; Si: 0.001 to 2.5%; Mn: 0.001 to 4.0%; P: 0.001 to 0.15%; S: 0.0005 to 0.03%; Al: 0.001 to 2.0%; N: 0.0005 to 0.01%; and O: 0.0005 to 0.01%; in which Si + Al is limited to less than 1.0%, and a balance being composed of iron and inevitable impurities, in which at a sheet thickness center portion, an average value of pole densities of the {100} to {223} orientation group is 5.0 or less, and a pole density of the {332} crystal orientation is 4.0 or less, a metal structure contains 5 to 80% of ferrite, 5 to 80% of bainite, and 1% or less of martensite in terms of an area ratio and the total of martensite, pearlite, and retained austenite is 5% or less, and an r value (rC) in a direction perpendicular to a rolling direction is 0.70 or more and an r value (r30) in a direction 30° from the rolling direction is 1.10 or less.
摘要翻译： 具有优异的均匀延伸率和扩孔这种高强度冷轧钢板含有C：0.01〜0.4％; 的Si：0.001〜2.5％; 的Mn：0.001〜4.0％; P：0.001至0：15％; S：0.0005〜0：03％; 的Al：0.001〜2.0％; N：0.0005〜0：01％; 和O：0.0005〜0：01％; 有Si的Al +被限制为小于1.0％，余量在板厚中心部分由其中铁和不可避免的杂质，在{100}的极点密度<011>的平均值为{223 } <110>取向基团为5.0或更小，的极密度的{332} <113>晶向是4.0或更小，金属结构包含铁素体的5〜80％，贝氏体的5至80％，和1 ％或以面积率和总马氏体，珠光体，方面较少马氏体和残余奥氏体为5％或更小，并且在一个方向上r值（R C）垂直于轧制方向为0.70以上且在r 值（R30）在与轧制方向成30°的方向上为1.10或更小。
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