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1. 发明授权

EP3385005B1 METHOD FOR MANUFACTURING RING-ROLLED PRODUCT 有权
公开(公告)号：EP3385005B1
公开(公告)日：2020-11-25
申请号：EP16870800.6
申请日：2016-12-01
申请人： Hitachi Metals, Ltd.
发明人： MURAI, Takuya , MATSUI, Takanori , ISHIWARI, Yuji , KIWAKE, Tomoyoshi
IPC分类号： B21B5/00 , B21B27/10 , B21H1/06

2. 发明授权

EP3385006B1 METHOD FOR MANUFACTURING RING-ROLLED PRODUCT 有权
公开(公告)号：EP3385006B1
公开(公告)日：2020-10-07
申请号：EP16870801.4
申请日：2016-12-01
申请人： Hitachi Metals, Ltd.
发明人： MURAI, Takuya , MATSUI, Takanori , ISHIWARI, Yuji , KIWAKE, Tomoyoshi
IPC分类号： B21B5/00 , B21B27/10 , B21H1/06

3. 发明公开

EP3189910A1 MANUFACTURING METHOD FOR RING FORMED BODY 有权转让
标题翻译：环形车身的制造方法
公开(公告)号：EP3189910A1
公开(公告)日：2017-07-12
申请号：EP15838736.5
申请日：2015-08-27
申请人： HITACHI METALS MMC SUPERALLOY, LTD. , Hitachi Metals, Ltd.
发明人： ISHIWARI, Yuji , OHSONE, Jun
IPC分类号： B21K1/32 , B21B5/00 , B21H1/06 , B21J5/02 , F01D5/02 , F02C7/00 , B21K21/06
CPC分类号： B21H1/06 , B21B5/00 , B21J5/02 , B21J5/025 , B21K1/32 , B21K1/761 , B21K21/06 , F01D5/02 , F02C7/00
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, is provided. In the present invention, a material is processed by first forging so as to be shaped in a shape including a bottom which is formed in a substantially disk shape, and a peripheral wall which is inclined to a direction from a center of the bottom toward an outer periphery thereof, in a direction from the outer periphery of the bottom toward one side in a direction of a center axis of the bottom, the bottom of a first forged article obtained by the first forging is drilled, a drilled article obtained by the drilling is ring-rolled, a ring material obtained by the ring rolling is placed inside two molds, the ring material is then processed by second forging 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.
摘要翻译：提供一种能够可靠且高效地制造减少了死金属区域的环成型品的环成型品的制造方法。在本发明中，通过第一次锻造加工材料以成形为包括形成为大致圆盘形状的底部和从底部的中心朝向在从底部的外周朝向底部的中心轴方向的一侧的方向上钻出由第一锻件得到的第一锻造制品的底部，通过钻孔获得的钻制品进行环轧时，将通过环轧得到的环形材料放置在两个模具内，然后通过二次锻造对环材料进行加工，以便通过两个模具沿着环材料的中心轴线的方向对其进行压制，以及由此制造环形模制品。

4. 发明公开

EP4082684A1 METHOD OF MANUFACTURING RING-ROLLED ELEMENT 审中-实审转让
公开(公告)号：EP4082684A1
公开(公告)日：2022-11-02
申请号：EP20908430.0
申请日：2020-12-16
申请人： Hitachi Metals, Ltd.
发明人： MUSHA, Kazuya , OHSONE, Jun , ISHIWARI, Yuji , OJI, Momoko
IPC分类号： B21B5/00 , B21H1/06 , B21J5/00
摘要： Provided is a ring-rolled member manufacturing method enabling stabilization of the attitude of the ring material without generating a defect and the like in the resulting ring-rolled member even when the main roll of the ring-rolling device is provided with the flange portions positioned on upper and lower sides of the ring material. A ring-rolling device used in the ring-rolled member manufacturing method of the present invention is provided with a main roll 10 and a mandrel roll 20. An outer peripheral face of the main roll includes a recessed portion 12 to accommodate the ring material and an outer peripheral face of the mandrel roll 20, an upper flange portion 11 positioned on an upper side thereof, and a lower flange portion 13 positioned on a lower side thereof. An inner face of the recessed portion includes a rolling face 12S to be in contact with an outer peripheral face of the ring material, an upper face on the upper flange portion side, and a lower face 13S on the lower flange portion side, the lower face 13 S having a slope in such a way that an opening of the recessed portion 12 is enlarged. The slope starts from within a range of a distance corresponding to a thickness of the ring-rolled member from a line of intersection between the lower face 13 S and the rolling face 12S. An angle of the slope is greater than 0.3° and no greater than 9° with reference to the perpendicular plane.

5. 发明公开

EP3385006A1 METHOD FOR PRODUCING RING-ROLLED PRODUCT 有权
公开(公告)号：EP3385006A1
公开(公告)日：2018-10-10
申请号：EP16870801.4
申请日：2016-12-01
申请人： Hitachi Metals, Ltd.
发明人： MURAI, Takuya , MATSUI, Takanori , ISHIWARI, Yuji , KIWAKE, Tomoyoshi
IPC分类号： B21B5/00 , B21B27/10 , B21H1/06
摘要： The temperature distribution of a ring material in ring rolling can be efficiently controlled within the appropriate temperature range, and as a result, the quality of a ring-rolled product which is manufactured by using the ring rolling, can be efficiently enhanced.
The present invention relates to a method for manufacturing a ring-rolled product, the method forms the ring-rolled product from a ring material 1 by using a mandrel roll 2 and a main roll 3, the mandrel roll 2 and the main roll 3 are configured so as to contact inner and outer circumferential surfaces 1b and 1c of the ring material 1 respectively, and are configured so as to press the ring material 1 in a radial direction thereof in a state in which the ring material 1 is rotated in a circumferential direction thereof. The manufacturing method includes a step of rolling the ring material 1, the step has an operation of induction-heating the main roll 3 by at least one of induction heating elements 6 and 7 and rolling the ring material 1 between the mandrel roll 2, and the main roll 3 which is induction-heated.

6. 发明公开

EP3385005A1 METHOD FOR PRODUCING RING-ROLLED PRODUCT 有权
公开(公告)号：EP3385005A1
公开(公告)日：2018-10-10
申请号：EP16870800.6
申请日：2016-12-01
申请人： Hitachi Metals, Ltd.
发明人： MURAI, Takuya , MATSUI, Takanori , ISHIWARI, Yuji , KIWAKE, Tomoyoshi
IPC分类号： B21B5/00 , B21B27/10 , B21H1/06
CPC分类号： B21B5/00 , B21B27/10 , B21H1/06
摘要： The temperature distribution of a ring material in ring rolling can be efficiently controlled within the appropriate temperature range, and as a result, the quality of a ring-rolled product which is manufactured by using the ring rolling, can be efficiently enhanced.
The present invention relates to a method for manufacturing a ring-rolled product, which manufactures the ring-rolled product from a ring material 1. The manufacturing method includes a step of rolling the ring material 1, which is has an operation of rolling the ring material 1 from both inner and outer circumferential sides thereof between a mandrel roll 2 and a main roll 3 in a state of rotating the ring material 1 toward one side in a circumferential direction thereof, and induction-heating the ring material 1 by induction heating elements 8 to 14. The induction heating element 8 to 10, 14 is disposed on only an outer circumferential side of the ring material 1 or is disposed on each of both the inner and outer circumferential sides in a region immediately before the rolling, or an inclined portions 11c to 13c is provided in an outer-peripheral edge portion of a coil 11a to 13a in the induction heating element 11 to 13. ( Figure 1 )

7. 发明授权

EP2000224B1 RING ROLLING MILL AND RING ROLLING METHOD 有权转让
公开(公告)号：EP2000224B1
公开(公告)日：2018-08-29
申请号：EP07740115.6
申请日：2007-03-28
申请人： Hitachi Metals, Ltd.
发明人： HIROSE, Shimpei , ISHIWARI, Yuji , KIKUCHI, Hiroaki , TAKIZAWA, Hideo
IPC分类号： B21B5/00 , B21H1/06
CPC分类号： B21B17/02 , B21B5/00 , B21H1/06
摘要： This ring rolling mill includes a main roll and a mandrel provided so as to be capable of being brought close to or separated from each other, and rolling a peripheral portion of a ring-shaped body in a radial direction of the ring-shaped body while the ring-shaped body is rotated along its peripheral direction in a state where the peripheral portion of the ring-shaped body is pinched in the radial direction between an outer peripheral surface of the main roll which is rotationally driven, and an outer peripheral surface of the mandrel which is rotatable. This ring rolling mill further includes a mandrel inclining/supporting mechanism which inclines and supports the mandrel with respect to the axis of rotation of the main roll such that the gap between the outer peripheral surface of the mandrel and the outer peripheral surface of the main roll differs on one side and on the other side as seen in a direction along the axis of rotation of the main roll.

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