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公开(公告)号：EP3269465A4
公开(公告)日：2018-03-14
申请号：EP16761711
申请日：2016-03-07
申请人： JFE STEEL CORP
发明人： TAJIKA HISAKAZU , IGI SATOSHI
摘要： A steel pipe according to the present invention has a waveform shape formed on an outer diameter thereof by a pipe expansion process. The value "a/w" is 0.038% or smaller, where "a" and "w" denote the amplitude and the wavelength of the waveform shape, respectively. It is desirable to arrange the value "w/»" indicating a ratio of the wavelength "w" of the waveform shape to a Timoshenko's buckling wavelength "»" so as to be larger than 0.8. As a result, it is possible to provide a steel pipe of which deformability is improvable, while reducing labor and time required by the pipe expansion process.
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2.发明授权METHOD FOR MANUFACTURING TUBE SHAPED PART WITH DIFFERENT DIAMETERS AND FORMING MOLD 有权制造具有不同直径和成形模具的管形部件的方法
公开(公告)号：EP2857118B1
公开(公告)日：2018-03-07
申请号：EP13798156.9
申请日：2013-05-24
CPC分类号： B21C37/16 , B21C37/0815 , B21C37/185 , B21D5/015 , B21D37/16
摘要： A method for manufacturing a pipe with different diameters along a longitudinal direction that has a small diameter portion, a large diameter portion, and a diameter-changing portion provided between the small diameter portion and the large diameter portion and is formed by press forming a blank made of a metal sheet. The method includes a step of press forming the blank with a U-shape forming die into a U-shaped formed part and press forming the U-shaped formed part with an O-shape forming die set into a circular cross-section formed part. A length of a vertical wall of the U-shape forming die is longer than a length of a vertical wall portion of the U-shaped formed part. In the O-shape forming die set, a die mating line is inclined downwardly, and a ratio t/D of a sheet thickness t of the blank to a diameter D, which represents a diameter of a portion of the O-shape forming die set corresponding to the small diameter portion and a diameter of a portion of the O-shape forming die set corresponding to the large diameter portion, is 0.010 ‰¤ t/D ‰¤ 0.080. A circumferential compressive strain given by the following expression (1) is equal to or more than 0.5%: Circumferential compressive strain = (blank width in sheet width direction that becomes pipe circumferential direction - perimeter of die set)/perimeter of die set x 100(%).
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公开(公告)号：EP3233319A2
公开(公告)日：2017-10-25
申请号：EP15871074.9
申请日：2015-12-17
CPC分类号： B21C23/217 , B21C23/002 , B21C23/005 , B21C23/035 , B21C23/085 , B21C23/10 , B21C23/12 , B21C23/205 , B21C23/211 , B21C23/215 , B21C23/218 , B21C23/32 , B21C25/08 , B21C29/003 , B21C29/04 , B21C35/023 , B21C37/16 , B21K1/063 , B21K1/26 , C21D8/10
摘要： A method is used to manufacture a drawn tube having a hollow low interior for housing an axle shaft. The method includes the steps of placing a billet into a first die assembly and pressing the billet into the first die to producing a pre-formed billet. The method also includes the steps of moving the pre-formed billet from the first die assembly to a second die assembly and pressing the pre-formed billet into the second die assembly to produce an extruded tube. The method further includes the steps of moving the extruded tube from the second die assembly to a third die assembly and pressing the extruded tube into the third die assembly to further elongate the extruded tube and decrease the thickness of the wall of the extruded tube to of from about 3 to about 18 millimeters to produce the drawn tube having the yield strength of at least 750 MPa.
摘要翻译： 使用具有固定基座和可朝固定基座移动的压制结构的机器来制造物品的方法。 该机器还包括模具组件和容器，两者都连接到固定基座。 该机器还包括心轴组件，该心轴组件包括可旋转平台，该可旋转平台联接到该压力机结构并具有与该组件对齐的第一平台心轴和与该容器对准的第二平台心轴。 该方法包括以下步骤：将第一起动部件放入模具组件中;挤压第一起动部件以形成物品;在压下第一起动部件的同时将第二平台心轴移入容器中;以及旋转可旋转平台 将第二平台心轴与模具组件对齐并将第一平台心轴与容器对齐。
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4.发明授权METHOD FOR PRODUCING FLANGELESS CLOSED-CROSS-SECTION-STRUCTURE COMPONENT HAVING CURVED SHAPE 有权工艺生产具有封闭截面结构和无耻的FORM A兰COMPONENT
公开(公告)号：EP2837437B1
公开(公告)日：2017-04-12
申请号：EP12874346.5
申请日：2012-04-13
IPC分类号： B21C37/15 , B21C37/08 , B21D7/08 , B21C37/14 , B21C37/16 , B21D5/08 , B21D11/08 , B21D11/14 , B21D47/01 , B21D53/88
CPC分类号： B21D22/025 , B21C37/0803 , B21C37/14 , B21C37/155 , B21C37/16 , B21D5/086 , B21D11/08 , B21D11/14 , B21D47/01 , B23K31/02
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公开(公告)号：EP2818260B1
公开(公告)日：2016-08-03
申请号：EP13772897.8
申请日：2013-04-02
CPC分类号： B21C37/16 , B21C37/08 , B21C37/0803 , B21C37/0815 , B21C37/30 , B21D3/14 , B21D5/015 , B23K11/0935 , B23K31/02 , B23K2201/06
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公开(公告)号：EP2282853B1
公开(公告)日：2012-08-15
申请号：EP09742014.5
申请日：2009-04-29
摘要： The invention relates to a supporting core (1) for using in a device for shaping plates to form a structured hollow profiled element comprising a plurality of interconnected supporting members (2), and to a method for producing structured hollow profiled elements from a plate. The aim of the invention is to provide a supporting core (1) for using in the production of structured hollow profiled elements, which ensures an all-over support of the plate, and thereby enables the production of hollow profiled elements with a variable cross-section or a curved form. To this end, when the individual supporting members (2) are pushed together, at least part of the surface thereof forms the inner contour of the hollow profiled element to be produced and they are interconnected by means of coupling elements (4). The coupling elements (4) allow the supporting members to be separated, said supporting members (2) being interconnected in an articulated manner in the separated position thereof.
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7.发明公开FITTING FÜR DICKWANDIGE ROHRE UND VERFAHREN ZU DESSEN HERSTELLUNG 有权配件FÜRDICKWANDIGE ROHRE UND VERFAHREN ZU DESSEN HERSTELLUNG
公开(公告)号：EP2394087A1
公开(公告)日：2011-12-14
申请号：EP10700437.6
申请日：2010-01-19
申请人： Viega GmbH & Co. KG
发明人： ARNING, Ulrich , KOSCHIG, Bernd
IPC分类号： F16L13/14
CPC分类号： F16L13/147 , B21C37/16 , B21C37/28 , B21D41/02 , F16L13/141 , F16L13/142 , F16L37/091 , Y10T29/49908
摘要： The invention relates to a fitting for thick‑walled pipes, having a contact region (6) and having a compression region (8), wherein the compression region (8) is arranged on that side of the contact region (6) which faces the pipe insertion opening and wherein the wall thickness in the compression region (8) is smaller at least in certain portions than the wall thickness in the contact region.
摘要翻译： 一种具有接触区域和按压区域的厚壁管件的配件，所述按压区域布置在所述接触区域面向所述管道插入口的侧面上，并且所述按压区域中的壁厚至少部分地减小 比接触区域的壁厚。 本发明还涉及一种用于生产用于厚壁管的配件的方法，其中厚壁管在布置在一个管端处的装配区域中径向加宽，使得装配区域的内径基本上对应于外部 管的直径和装配区域中的壁厚基本上对应于管的其余部分的壁厚。
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8.发明授权IN FORM EINES WELLROHRS AUSGEBILDETES DEFORMIERBARES ELEMENT EINER LENKSPINDEL UND VERFAHREN ZU DESSEN HERSTELLUNG 有权IN一个训练有素的管变形的元件用于转向杆和方法的形式及其
公开(公告)号：EP1981662B1
公开(公告)日：2009-11-11
申请号：EP07701276.3
申请日：2007-01-24
发明人： LUTZ, Christian
CPC分类号： B62D1/192 , B21C37/0803 , B21C37/0815 , B21C37/14 , B21C37/157 , B21C37/16 , B21C37/205 , B21D13/02 , B21D15/06 , Y10T29/49826 , Y10T29/49893
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公开(公告)号：EP1922159B1
公开(公告)日：2009-04-08
申请号：EP06716821.1
申请日：2006-02-13
摘要： The method of shaping various cross-sections on metal pipes, especially those used for lighting posts, wherein the pipe of uniform original diameter all over its original length is mounted in apparatus so, that its middle part is placed in two sleeve supports (3) and one of its faces rests against a thrust element (4) of the apparatus, whereas the other end of that pipe is subjected to expanding operation with external axial compressing force, the pipe with its one end expanded to larger diameter being then removed from the apparatus and put again into the apparatus in sleeve supports (3) of the apparatus with the face of expanded end rested against the thrust element (4) of the apparatus and the free end of the pipe having the original diameter being formed to cylindrical-and-conical shape with the use of the die (7) of the apparatus while exerting the compressing force, and then a cylindrical-and-conical head (16) of the draw unit (8) is inserted into this end and it is fixed to the walls of previously formed cylindrical-and-conical part of the pipe and an external tensile force is exerted onto said head, so that the end of the pipe is subjected to drawing through the drawhole of the reducing die (9) of the apparatus until it acquires the required diameter, smaller than the original diameter, wherein the process of expanding one end of the pipe of original diameter (d w ) to required diameter (d 1 ) is carried out in additional mounting in forming clamp (5) of the same diameter (d 1 ), whereas, prior to forming the other end of the pipe of the original diameter (d w ) to cylindrical-and-conical shape several cutouts of preferably triangular-like profile are made at equal space on pipe face and circumference and the process of drawing the other end of the pipe of original diameter (d w ) to required diameter (d 2 ) is carried out while clamping the cylindrical-and-conical end of the pipe between goffered surfaces of the external side of the conical-and-cylindrical head (16) and the internal side of the pressing sleeve (18) of the draw unit (8) of the multifunctional apparatus.
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10.发明公开IN FORM EINES WELLROHRS AUSGEBILDETES DEFORMIERBARES ELEMENT EINER LENKSPINDEL UND VERFAHREN ZU DESSEN HERSTELLUNG 有权IN一个训练有素的管变形的元件用于转向杆和方法的形式及其
公开(公告)号：EP1981662A1
公开(公告)日：2008-10-22
申请号：EP07701276.3
申请日：2007-01-24
发明人： LUTZ, Christian
CPC分类号： B62D1/192 , B21C37/0803 , B21C37/0815 , B21C37/14 , B21C37/157 , B21C37/16 , B21C37/205 , B21D13/02 , B21D15/06 , Y10T29/49826 , Y10T29/49893
摘要： In a method of producing a corrugated tube, two half shells (2, 3), each running in a longitudinal direction, are formed from a flat sheet and are provided with corrugations (4, 5) which are oriented transversely to their longitudinal directions, wherein the two half shells (2, 3) are either arranged longitudinally next to one another in an individual sheet-metal part (1) or are separate parts. In the case of a design having two half shells arranged next to one another in a common sheet-metal part (1), the preformed sheet-metal part (1) is folded or bent in the region between the two half shells (2, 3) about an axis (19) lying parallel to the longitudinal directions of the half shells (2, 3), wherein free longitudinal edges of the half shells (2, 3) are brought into mutual contact and connected to one another. In the case of a design of the half shells (2, 3) in the form of separate parts, the two half shells (2, 3) are placed against one another with their longitudinal edges (16,17) and the longitudinal edges (16, 17) are connected to one another, at least one of the two longitudinal edges (16, 17), coming into mutual contact, of the partial shells (2, 3) is provided with a number of recesses (18) spaced apart in the longitudinal direction of the partial shells (2, 3), and, by connecting sections of this longitudinal edge (16, 17) which lie between the recesses (18), a number of openings (22) through the lateral surface of the corrugated tube, which are spaced apart in the longitudinal direction of the corrugated tube, are formed with the other longitudinal edge (16, 17) in the connecting region of the two longitudinal edges (16, 17).
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