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公开(公告)号：EP3189910B1
公开(公告)日：2021-10-13
申请号：EP15838736.5
申请日：2015-08-27
发明人： ISHIWARI, Yuji , OHSONE, Jun
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公开(公告)号：EP3177419B1
公开(公告)日：2019-10-30
申请号：EP15767290.8
申请日：2015-08-06
申请人： Muraro S.r.l.
发明人： SARTORI, Angelo , SARTORI, Mario
IPC分类号： B21H1/06
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54.发明公开
公开(公告)号：EP3519122A1
公开(公告)日：2019-08-07
申请号：EP17777254.8
申请日：2017-09-29
申请人： Forge Pat GmbH
发明人： BIERHALTER, Peter
IPC分类号： B21H1/06
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公开(公告)号：EP2977123B1
公开(公告)日：2019-05-22
申请号：EP14769789.0
申请日：2014-03-18
申请人： Hitachi Metals, Ltd.
发明人： YAGAMI, Tetsuya , TERAMAE, Toshiya , FUJITA, Etsuo , NAGAO, Shinya , MUKOUSE, Remi , IWASA, Naoyuki , FUKUI, Tsuyoshi , AOKI, Chuya
CPC分类号： F01D25/005 , B21B45/004 , B21D19/04 , B21H1/06 , B21J1/02 , B21J1/025 , B21J5/02 , B21J5/022 , B21K1/761 , C22C19/05 , C22C19/055 , C22C19/056 , C22F1/10 , F01D5/02 , F01D5/06 , F05D2220/32
摘要： The present invention provides a high quality material for ring rolling. The material includes radially outer and inner peripheral surfaces. In the material, a center of gravity on a half section is located so as to be closer to the outer peripheral surface in contact with a main roll than a center of the half section in a thickness direction, a shape of the half section includes a height reducing portion having a height from a center line dividing the half section into halves in a height direction, this height is gradually reduced toward the inner peripheral surface in contact with a mandrel roll, and the shape is formed in a substantially linear symmetry such that the center line is a symmetric axis. A height of the inner peripheral surface is from 20 % to 50 % of a maximum height of the material.
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56.发明公开
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公开(公告)号：EP3328572A1
公开(公告)日：2018-06-06
申请号：EP15750009.1
申请日：2015-07-31
CPC分类号： B21H1/06 , B21B38/00 , B21C51/00 , B23P15/006 , F01D5/02 , F05D2230/26 , F05D2240/24 , F05D2300/17
摘要： Method for reproducibly producing a contoured ring rolling product for a rotating application, with a ring rolling machine controlled in a process-monitored manner, in particular from a metal ring blank of such a nature that it is susceptible to cracking. This method comprises the steps of defining at least one process window, extending over the rolling time, in relation to preselected process parameters for a specific ring rolling product that is to be brought into its final form by this ring rolling machine on the basis of calibrating specimens that have been brought into their final form by this ring rolling machine, wherein the process window or windows of process parameters monitored when carrying out the process is/are determined by the process parameters of those calibrating specimens of which the rolled product meets the requirements demanded of the ring rolling product to be produced, wherein the preselected process parameters comprise at least two of the following process parameters: ring growing rate, axial rolling force, radial rolling force, rolling time, temperature of the ring blank during the rolling process, and subsequently ring rolling ring blanks in a contoured manner to producethe ring rolling products, wherein the rolling parameters of the rolled blank at the time are recorded with reference to the at least two selected process parameters and evaluated to ascertain whether these process parameters lie within the predefined process window, and only those ring rolling products that have been ring-rolled with process parameters that lie within the process window are passed on for further machining and/or processing.
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公开(公告)号：EP3013174B1
公开(公告)日：2018-05-16
申请号：EP14737312.0
申请日：2014-06-25
申请人： Allied Gold Limited
发明人： QUAYLE, Christopher
IPC分类号： B21D53/44 , A44C27/00 , A44C9/00 , A44C5/00 , B21K1/76 , B21K25/00 , B21D53/16 , B21H1/06 , B21H7/00
CPC分类号： A44C27/00 , A44C5/0092 , A44C9/00 , A44C9/0015 , B21D53/16 , B21D53/44 , B21H1/06 , B21H7/00 , B21K1/761 , B21K25/00
摘要： A method of forming an article such as a jewellery ring or bangle comprising: providing a first substantially annular-sectioned element and a second substantially annular-sectioned element, an outer diameter of the first element being less than an inner diameter of the second element; forming a circumferential groove in one of the first and second elements by a process of rolling; positioning the first and second elements together with the second element positioned circumferentially around the first element; and expanding the first element such that the circumferential groove in the one element receives therein the other of the said elements.
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公开(公告)号：EP3189911A4
公开(公告)日：2018-03-28
申请号：EP15838920
申请日：2015-08-27
发明人： OHSONE JUN , WATANABE MASAYUKI , TAKIZAWA HIDEO
CPC分类号： F01D11/006 , B21B5/00 , B21H1/06 , B21J5/02 , B21J5/06 , B21J13/02 , B21K1/32 , B21K21/06 , B23P15/006 , C22C19/03 , C22C19/07 , F01D5/02 , F01D5/06 , F01D25/00 , F02C7/00 , F05D2260/30
摘要： A ring molded article manufacturing method capable of reliably and efficiently producing a ring molded article in which dead metal regions are reduced, and a ring material used for producing the ring molded article, are provided. The present invention relates to the method for manufacturing a ring molded article having two convex portions which respectively protrude on both sides of the ring molded article in a direction of a center axis thereof and extend in a direction of a circumeference of the ring molded article. In the manufacturing method, the ring material is placed inside two molds on which concave portions respectively corresponding to the convex portions are formed, in a condition in which the ring material is supported by a region on an outer peripheral side from an outer peripheral side corner in the concave portion of one of the two molds and a region on an inner peripheral side from an inner peripheral side corner in the concave portion of another of the two molds, the ring material is then forged so as to be pressed by the two molds in a direction of a center axis of the ring material, and the ring molded article is thus produced. In addition, the present invention relates to the ring material used for producing the ring molded article.
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公开(公告)号：EP3135397A4
公开(公告)日：2017-12-27
申请号：EP15782316
申请日：2015-04-07
发明人： IMAMURA YOSHIHIDE , SAKANE YUTO , MIKAMI KOHEI , KABE YOSHIRO , IWASAKI HAYATO , KITANO HIROSHI
摘要： A method of manufacturing a preliminary formed body includes an ironing step and a thickening step. In the ironing step, a predetermined range of a plate is formed into a tapered shape in such a manner that while rotating the plate, a transform target portion of the plate is locally heated by induction heating, and a processing tool is pressed against the transform target portion. In the thickening step, a peripheral portion that is a distal end of the tapered shape of the plate is expanded inward in such a manner that while rotating the plate, the peripheral portion is locally heated, and a forming roller is pressed against the peripheral portion to push the peripheral portion in a direction orthogonal to a thickness direction of the peripheral portion.
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