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公开(公告)号：US20250065386A1
公开(公告)日：2025-02-27
申请号：US18943070
申请日：2024-11-11
Applicant: XI'AN JIAOTONG UNIVERSITY , SHAANXI ZINC INDUSTRY CO., LTD.
Inventor： Shengqiang MA , Ping LV , Yusheng LIU , Jiandong XING , Jing XU , Jiankang ZHANG , Jiaxu CHEN , Maojiang YE , Gaofeng MA , Wenmin NIU
Abstract: A method for preparing a thin-walled composite pipe is provided, in which an AlN particle/zinc-aluminum 27 (AlNp/ZA27) composite billet is subjected to multi-pass reciprocating extrusion at 250-350° C., and then loaded into a pipe extrusion die. The composite billet is heated with the temperature being in an ascending gradient distribution (within a range of 250-350° C.) along an extrusion direction from the billet to an outlet of the die, then kept a preset temperature for a period of time, and finally extruded at a rate of 0.1-0.5 mm/s to obtain the thin-walled composite pipe. A thin-walled composite pipe prepared by this method is also provided, including an AlN particle and a ZA27 alloy.
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公开(公告)号：US20240307937A1
公开(公告)日：2024-09-19
申请号：US18605506
申请日：2024-03-14
Applicant: Battelle Memorial Institute
Inventor： Xiao Li , Jorge Fernandez Dos Santos , Tianhao Wang , Darrell R. Herling
CPC classification number: B21C23/002 , B21C23/085 , B21C29/003 , C22C21/02
Abstract: A feedstock may include at least 1 wt % of aluminum scrap composition comprising: an extrudable floated fragmentizer aluminum scrap composition, an extrudable fragmentizer aluminum scrap composition, an extrudable secondary aluminum scrap composition; or a mixture of at least two thereof. A feedstock may include at least 0.01 wt % of an alloying element composition at least partially intermixed relative to the aluminum scrap composition, the alloying element composition comprising: silicon, copper, iron, magnesium, chromium, manganese, zinc, oxygen; a rare earth element, or a mixture of at least two thereof.
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3.发明公开
公开(公告)号：US20240239629A1
公开(公告)日：2024-07-18
申请号：US18291672
申请日：2022-07-25
Applicant: ROBOPAC S.P.A.
Inventor： Marco MORRI
CPC classification number: B65H27/00 , B21C23/085 , B21C37/151 , B21C37/202 , B65B11/00 , B65B2011/002
Abstract: A pre-stretching roller of an unwinding apparatus, associable to a wrapping machine, includes a main body elongated and manufactured by an extrusion process of a metal alloy. The main body includes a first tubular element having a cylindrical shape and defining an external cylindrical wall for interacting with a film, a second tubular element internal to the first tubular element and having a first end provided with a first seat suitable for coupling with a driving shaft of a driving unit and an opposite second end provided with a second seat suitable for coupling with a supporting pin for fixing the pre-stretching roller to the unwinding apparatus, and a plurality of longitudinal vanes which connect the first tubular element to the second tubular element. The second tubular element has a plurality of longitudinal ribs, each connected to a respective longitudinal vane.
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公开(公告)号：US20240191429A1
公开(公告)日：2024-06-13
申请号：US18410501
申请日：2024-01-11
Applicant: NV BEKAERT SA
Inventor： Baoxing WANG , Yunfang TANG , Yohann HAMON
IPC: D07B1/06 , B21C23/08 , C22C9/04 , C25D3/20 , C25D3/22 , C25D3/38 , C25D5/10 , C25D5/50 , C25D7/06
CPC classification number: D07B1/0666 , B21C23/08 , C22C9/04 , C25D3/20 , C25D3/22 , C25D3/38 , C25D5/10 , C25D5/50 , C25D7/0607 , D07B2205/3025 , D07B2205/3089 , Y10T428/12333
Abstract: A steel cord that is suitable for reinforcing rubber articles such as tires. The inventive steel cord enables to completely eliminate the presence of cobalt in a tire when combined with the proper cobalt free compound. Advantageously the steel cord adheres equally well to rubbers containing organic cobalt salts. The inventive wire is different from prior art steel cords in that the brass coating now comprises iron particles. The iron particles have a size between 10 nm and 10 000 nm. The presence of iron mitigates the adhesion retention loss of the rubber to steel cord bond in a hot and humid environment. It is a further advantage that the inventive steel cord does not contain any intentionally added cobalt thereby contributing to the elimination of harmful substances in the production area as well as the environment.
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5.发明公开
公开(公告)号：US20240082897A1
公开(公告)日：2024-03-14
申请号：US17766664
申请日：2021-04-15
Applicant: CENTRAL IRON AND STEEL RESEARCH INSTITUTE , HANDAN XINXING SPECIAL STEEL PIPES CO. , LTD.
Inventor： Zhenbao LIU , Xiaohui WANG , Jianxiong LIANG , Yongqing SUN , Changjun WANG , Zhiyong YANG , Yuguang GAO , Jie GAO , Fuqiang LIU , Ailiang ZHANG
IPC: B21C23/08
CPC classification number: B21C23/085
Abstract: A hot extrusion die for a special-shaped square pipe includes a die cavity sleeve with a special-shaped cavity. A hot extrusion mandrel is arranged in the die cavity sleeve. An area between the die cavity sleeve and the hot extrusion mandrel forms a die cavity hole. A first extrusion diversion hole and a second extrusion diversion hole are arranged below the die cavity hole. An integral centroid of the die cavity hole is located at a circle center of a radial cross section of the die cavity sleeve. Further disclosed is a hot extrusion integral forming method for a special-shaped square pipe, including: heating and expanding a blank material; heating the blank material again after expanding; performing hot extrusion on the blank material; and cooling the formed special-shaped square pipe in air to a room temperature, and inspecting surface quality and mechanical properties of the special-shaped square pipe.
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6.发明公开
公开(公告)号：US20240042504A1
公开(公告)日：2024-02-08
申请号：US18546643
申请日：2022-02-08
Applicant: BIOTRONIK AG
Inventor： ALEXANDER HEUSS , ULLRICH BAYER , OKECHUKWU ANOPUO , ANDRÉ SCHOOF , BERND BLOCK , JAN HANNEMANN
CPC classification number: B21C23/085 , B21C23/002 , B21C29/003 , A61L31/022
Abstract: A method for producing a tubular semi-finished product for an implant scaffold which leads to an improvement of the dilatability of the scaffold. The semi-finished product consists of a magnesium alloy. The method includes extruding a tubular semi-finished product by a heated die or tempering an extruded tubular semi-finished product by a heating device. A tube drawing device applies a tensile stress and/or a torsional stress. The tube drawing device has a clamping device. The clamping device is fixed on a predefined portion of the tubular semi-finished product. Tensile force generated by the tube drawing device and/or the torsion moment generated by the tube drawing device is transferred to the semi-finished product.
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公开(公告)号：US20230282380A1
公开(公告)日：2023-09-07
申请号：US18118200
申请日：2023-03-07
Applicant: BWXT Advanced Technologies LLC
Inventor： Benjamin D. FISHER , John R. SALASIN , David J. GARNER , Christopher N. FOLMAR , Sabrina McCOY
CPC classification number: G21C21/10 , G21C3/623 , G21C3/334 , B21C23/002 , B21C23/08
Abstract: Fuel bundle has plurality of twisted ribbon fuel rodlets arranged hexagonal packing or circle packing arrangement in a reactor core encased in a multilayer casing. Arrangement of twisted ribbon fuel rodlets is facilitated by rodlet seating fixture with seating surface having a plurality of protrusions that form a receiving space for ends of the twisted ribbon fuel rodlets. Manufacture of the fuel bundle incorporates fiber manufacturing technologies and, optionally, infiltration of spaces in the reactor core by infiltrant. Twisted ribbon fuel rodlet manufacturing system has sub-systems that impart twist periodicity to extruded ribbons, inspect twisted extruded ribbons, and cut twisted extruded ribbons to length. Inspection sorts twisted ribbon fuel rodlets as well as provides feedback to adjust operation of sub-systems. The fuel bundle (and optional fuel bundle support) can be incorporated into a fuel assembly of nuclear propulsion fission reactor structure of, for example, a nuclear thermal propulsion engine.
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公开(公告)号：US11724297B1
公开(公告)日：2023-08-15
申请号：US18113410
申请日：2023-02-23
Inventor： Runming Liang
IPC: B21C23/08
CPC classification number: B21C23/085
Abstract: A method for producing seamless pipes and an extruder are provided, including: S1, sleeving an ingot holding cylinder on an upsetting shaft and feeding an aluminum bar; S2, moving the ingot holding cylinder backwards; S3, squeezing the aluminum bar by an extrusion plug; S4, after upsetting, moving the ingot holding cylinder and the extrusion plug back to one side away from the upsetting shaft; S5, removing the upsetting shaft and installing a mold on the mold shaft; S6, perforating the aluminum bar after upsetting by a perforating needle; S7, extruding the perforated aluminum bar by the extrusion plug. The aluminum bar after upsetting keeps the same central axis as the extruder centerline and the ingot holding cylinder. The seamless pipes extruded from the mold are uniform, thereby improving their concentricity and finished product rate.
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公开(公告)号：US20230234115A1
公开(公告)日：2023-07-27
申请号：US18121563
申请日：2023-03-14
Applicant: Battelle Memorial Institute
Inventor： Keerti S. Kappagantula , Glenn J. Grant , Aditya K. Nittala , Xiao Li , MD. Reza-E-Rabby , WoongJo Choi , Bharat Gwalani , Joshua A. Silverstein
CPC classification number: B21C23/002 , B21C23/01 , B21C23/08 , C22F1/04 , C22F1/08 , C01B32/182 , B21C23/001
Abstract: An extrusion feedstock material is provided, the material comprising a length of one material extending from a first end to a second end; and at least one slot extending lengthwise within the one material between the first and second ends of the material. A process for extruding conductive material is also provided, the process comprising providing both rotational and axial forces between a die tool and a length of feedstock material to form an extrusion product, wherein the length of feedstock and conductive material comprise Al and NanoCrystalline Carbon Forms (NCCF). A process for extruding material is provided, the process comprising: providing both rotational and axial forces between a die tool and a length of feedstock material to form an extrusion product, wherein the length of feedstock material comprises: a length of material extending from a first end to a second end; and at least one slot extending lengthwise within the material between the first and second ends of the material. A conductive extrudate material is provided comprising Al and NanoCrystalline Carbon Forms (NCCF).
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公开(公告)号：US11697143B2
公开(公告)日：2023-07-11
申请号：US16953460
申请日：2020-11-20
Applicant: American Axle & Manufacturing, Inc.
Inventor： John A. Pale , David I. Alexander , Mahaveer Khetawat
IPC: B21C23/03 , B21C23/20 , B21C23/10 , B21C23/12 , B21C23/00 , B21C23/32 , B21C23/08 , B21C37/16 , B21C23/21 , C21D8/10 , B21K1/06 , B21C1/26 , B21K1/26 , B21C29/04 , B21C25/08 , B21C29/00 , B21C35/02
CPC classification number: B21C23/217 , B21C1/26 , B21C23/005 , B21C23/035 , B21C23/10 , B21C23/12 , B21C23/205 , B21C23/211 , B21C23/215 , B21C23/218 , B21C23/32 , B21C29/04 , B21K1/063 , B21K1/26 , C21D8/10 , B21C23/002 , B21C23/085 , B21C25/08 , B21C29/003 , B21C35/023 , B21C37/16
Abstract: A method is used to manufacture a tube having a hollow interior for housing an axle shaft. The tube is formed in a single machine having a fixed base and a single press structure movable toward the fixed base. The single machine includes first and second die assemblies coupled to the fixed base and first and second mandrels coupled to the single press structure. The method includes the steps of placing a billet into the first die assembly, pressing the billet into the first die assembly with the first mandrel to producing a pre-formed billet, and moving the pre-formed billet from the first die assembly to the second die assembly. THE method further includes the steps of pressing the pre-formed billet into the second die assembly with the second mandrel to elongate the pre-formed billet and form a hollow interior therein to produce an extruded tube.
