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1.发明公开公开(公告)号：US20240326115A1
公开(公告)日：2024-10-03
申请号：US18626954
申请日：2024-04-04
发明人： Andreas RÖNPAGEL , Jan EHLERS
CPC分类号： B21D17/04 , B21B27/024 , B21D41/00 , B21B2203/18
摘要： The invention relates to an apparatus (1) for producing a peripheral groove (101) in an end portion (103) of a metal tube (100), in particular a metal tube (100) which is to be coated on the inside, the groove (101) being set up for receiving tube connectors, having a first, rotationally driven roller (3), a second, freely rotating roller (5), the first roller (3) having a roughened or structured surface (6) relative to the second roller (5), a pressing device (15) for producing a relative movement between the first and second roller (3, 5), between a first and a second position, the rollers (3, 5) assuming a first spacing from one another in the first position, which first spacing permits an introduction of a wall of the tube between the rollers (3, 5), and assuming a smaller, second spacing from one another in the second position, which second spacing is smaller than a material thickness (M) of the wall of the tube.
It is proposed according to the invention that the first, driven roller (3) is set up to grip the tube from the outside in the second position and to rotate it, with the result that a peripheral groove (101) is pressed into the tube in the second position when the first roller (3) is driven.-
公开(公告)号：US12103060B2
公开(公告)日：2024-10-01
申请号：US17790047
申请日：2020-01-29
发明人： Yoichi Matsui , Yuta Odawara
CPC分类号： B21B37/32 , B21B27/021 , B21B27/106 , B21B31/18 , B21B37/165 , B21B38/04 , B21B2027/022 , B21B2261/04 , B21B2269/14
摘要： A rolling mill is provided with: a roll for rolling a metal plate, the roll being capable of shifting in an axial direction and having a tapered portion at an end portion in the axial direction; and a heating unit configured to form an expansion portion protruding in a radial direction in the tapered portion by heating the tapered portion.
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公开(公告)号：US20230302513A1
公开(公告)日：2023-09-28
申请号：US17911966
申请日：2022-03-26
申请人： OSG CORPORATION
发明人： Teruya Hisada
CPC分类号： B21B27/02 , C23C28/044 , C23C8/26
摘要： Provided is a rolling die that increases the durability of a nitrided molded surface. The rolling die (1) includes a tool base material that is made of steel and has a molded surface (2) on which a plurality of working teeth (10) is formed. The tool base material includes a nitride layer (15) in which nitrogen is diffused. The nitride layer (15) is disposed to reach a position that is 20 to 70 μm in depth from the molded surface (2). The molded surface (2) has a surface hardness of at least 1100 HV. The rate of depth change from the depth (D1) of the nitride layer (15) at crests (11) of the working teeth (10) to the depth (D2) of the nitride layer (15) at roots (13) of the working teeth (10) is not higher than 30%.
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公开(公告)号：US11628481B2
公开(公告)日：2023-04-18
申请号：US17600794
申请日：2020-03-25
发明人： Kazunori Kamimiyada , Shinya Ishikawa , Yuji Konno
摘要： There is provided a centrifugally cast composite roll for rolling having excellent wear resistance and surface deterioration resistance at levels of a high-speed steel cast iron roll and having rolling incident resistance at a level of a high alloy grain cast iron roll. Its outer layer includes chemical components by mass ratio: C: 1.5 to 3.5%; Si: 0.3 to 3.0%; Mn: 0.1 to 3.0%; Ni: 1.0 to 6.0%; Cr: 1.5 to 6.0%; Mo: 0.1 to 2.5%; V: 2.0 to 6.0%; Nb: 0.1 to 3.0%; B: 0.001 to 0.2%; N: 0.005 to 0.070%; and the balance being Fe and inevitable impurities, wherein: a chemical composition of the outer layer satisfies Formula (1) and has 5 to 30% of M3C carbide by area ratio; an outer layer Shore hardness (A) of a roll surface satisfies Formula (2); and a residual stress (B) of the roll surface satisfies Formula (3), 2×Ni+0.5×Cr+Mo>10.0 (1) Hs 75≤A≤Hs 85 (2) 100 MPa≤B≤350 MPa (3).
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5.发明申请公开(公告)号：US20230042220A1
公开(公告)日：2023-02-09
申请号：US17788609
申请日：2021-01-15
摘要： The object of the method is to obtain rolling mill rolls with a coating of tungsten carbide or of the alloys thereof, wherein the coating is a single layer and is carried out by means of high velocity thermal spraying.
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公开(公告)号：US20220176431A1
公开(公告)日：2022-06-09
申请号：US17600794
申请日：2020-03-25
发明人： Kazunori KAMIMIYADA , Shinya ISHIKAWA , Yuji KONNO
摘要： There is provided a centrifugally cast composite roll for rolling having excellent wear resistance and surface deterioration resistance at levels of a high-speed steel cast iron roll and having rolling incident resistance at a level of a high alloy grain cast iron roll. Its outer layer includes chemical components by mass ratio: C: 1.5 to 3.5%; Si: 0.3 to 3.0%; Mn: 0.1 to 3.0%; Ni: 1.0 to 6.0%; Cr: 1.5 to 6.0%; Mo: 0.1 to 2.5%; V: 2.0 to 6.0%; Nb: 0.1 to 3.0%; B: 0.001 to 0.2%; N: 0.005 to 0.070%; and the balance being Fe and inevitable impurities, wherein: a chemical composition of the outer layer satisfies Formula (1) and has 5 to 30% of M3C carbide by area ratio; an outer layer Shore hardness (A) of a roll surface satisfies Formula (2); and a residual stress (B) of the roll surface satisfies Formula (3), 2×Ni+0.5×Cr+Mo>10.0 (1) Hs 75≤A≤Hs 85 (2) 100 MPa≤B≤350 MPa (3).
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公开(公告)号：US20220032351A1
公开(公告)日：2022-02-03
申请号：US17278819
申请日：2020-01-29
申请人： Kerpua Solutions Oy
发明人： Mikko TALVITIE
IPC分类号： B21B27/02 , B22F7/06 , B22F7/08 , C21D9/38 , C21D9/00 , C22C33/02 , B33Y40/20 , B33Y70/00 , B33Y80/00
摘要： In the present there is presented a method to manufacture multimaterial rolls, comprising method to produce base material containing part of the roll, joining of special material containing part for that, hot working at least part of the length of the roll ingot containing base material and special material, —so that at least requested roll ingot length and diameter are achieved as well as final treatment of the roll ingot—to manufacture finished roll. This method enables manufacture of large rolls, for example having length more than 3 meters as one integrated component without welding or mechanical joint—so, that in the working surfaces of the rolls is used steel with high amount of alloying elements and carbide forming alloying elements.
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公开(公告)号：US20210154712A1
公开(公告)日：2021-05-27
申请号：US17258492
申请日：2019-08-07
申请人： HITACHI METALS, LTD.
发明人： Yasunori NOZAKI , Nozomu ODA
IPC分类号： B21B27/02
摘要： A centrifugally cast composite roll for rolling comprising an outer layer and an inner layer, which are integrally fused to each other, the outer layer being made of an Fe-based alloy comprising by mass 1.70-2.70% of C, 0.3-3% of Si, 0.1-3% of Mn, 1.1-3.0% of Ni, 4.0-10% of Cr, 2.0-7.5% of Mo, 3-6.0% of V, 0.1-2% of W, 0.2-2% of Nb, 0.01-0.2% of B, and 0.01-0.1% of N, the balance being Fe and inevitable impurities, and the inner layer being made of ductile cast iron.
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公开(公告)号：US10953447B2
公开(公告)日：2021-03-23
申请号：US16440670
申请日：2019-06-13
申请人： Novelis Inc.
发明人： Renato Rufino Xavier , David Skingley Wright , Michael Kosmicki , Carlos Eboli , Timothy F. Stanistreet , Young Taeg Park
摘要： Provided herein are systems and methods for containing a viscous material, such as a coolant, on a roll and/or a roll processed engineering material (e.g., a metal strip). In particular, a viscous material containment system can include a movable seal and a gas delivery device. A method for cooling a roll can include applying a viscous material, such as a coolant, to the roll and containing the viscous material on the roll using the viscous material containment system. In some cases, the viscous material containment system can be used to facilitate removal of the viscous material from the roll and/or the roll processed engineering material.
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公开(公告)号：US10821490B2
公开(公告)日：2020-11-03
申请号：US15386789
申请日：2016-12-21
申请人： SMS group GmbH
发明人： Juergen Bieniek , Markus Schaprian , Ralf Rode
摘要： To minimize the setup times in the case of a tool changeover on rolls, the movement sequences are separated into transverse movements and vertical movements using a tool changeover system and method for changeover of at least one tool disposed on a roll shaft in a working position. In one aspect, the tool changeover system includes a tool changeover rack, a vertical transport and a transverse transport. A drawing frame separate from the tool changeover rack can be transported transversely separately with reference to the tool changeover rack. The tool changeover rack has a device for connecting with the vertical transport and a tool accommodation for accommodating the tool. The drawing frame has a device for connecting with the transverse transport and a device for connecting with the tool.
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