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公开(公告)号：US20240344158A1
公开(公告)日：2024-10-17
申请号：US18579117
申请日：2022-05-11
CPC分类号： C21D1/667 , C21D1/18 , C21D9/0062 , C21D2211/008
摘要： A quenching apparatus for a metal sheet, continuous annealing equipment, a method for quenching a metal sheet, a method for manufacturing a cold rolled steel sheet, and a method for manufacturing a coated steel sheet. The quenching apparatus has a water tank in which the metal sheet is passed and immersed in a liquid to cool the metal sheet, a water injection apparatus placed in the water tank, and plural restraining roll pairs with which the metal sheet that is passed in the water tank is restrained. The water injection apparatus has plural water injection nozzles arranged in a sheet passing direction of the metal sheet on front and back surface sides of the metal sheet. A position of each of the plural restraining roll pairs is separately adjusted with respect to the metal sheet in accordance with operation conditions.
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公开(公告)号：US12053816B2
公开(公告)日：2024-08-06
申请号：US17287652
申请日：2019-10-18
申请人： NETUREN CO., LTD.
发明人： Ryosuke Suzuki , Norimasa Sunaga
CPC分类号： B21K1/768 , B21J5/12 , B21J9/02 , C21D1/42 , C21D1/667 , C21D9/0068 , C21D2221/10
摘要： An apparatus for manufacturing a rack bar includes a pre-forming machine forming a flattened portion on an outer peripheral surface of a hollow shaft member, a teeth forming machine forming rack teeth on the flattened portion, a heat treatment machine quenching the rack teeth, a first conveying machine carrying the shaft member into and from the pre-forming machine, a second conveying machine carrying the shaft member into and from the teeth forming machine, and a third conveying machine carrying the shaft member into and from the heat treatment machine. The first conveying machine, the second conveying machine, and the third conveying machine hold one end of the shaft member from a radially inner side of the shaft member. The apparatus of the rack bar are suitable for manufacturing a relatively short hollow rack bar having rack teeth formed over substantially an entire length of a shaft member.
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公开(公告)号：US12000007B2
公开(公告)日：2024-06-04
申请号：US16967440
申请日：2019-02-06
发明人： Joseph A. Powell
摘要： A process for reducing film boiling by keeping the quenchant pressure above the vapor pressure of the liquid quenchant, and/or using a controlled quenchant renewal to more uniformly cool the surface of part at the initial moment of contact and apparatuses to conduct the pressure and controlled quenchant renewal are disclosed. It is believed that these processes will improve the heat treating of parts with intricate geometries to provide predictable part distortion. The applicability of the method to gun barrels, tubes, round rings, and hollow axles is explained.
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公开(公告)号：US11753692B2
公开(公告)日：2023-09-12
申请号：US16954563
申请日：2018-12-19
摘要： The invention relates to an apparatus (10) for the thermal treatment of metallic products, which comprises (a) a support and transport plane (24); (b) at least one collector module (12) comprising at least one collector (14, 16), the collector (14) being provided with a perforated plate (22) facing the support and transport plane (24); (b-2) a conduit (20) connected to said at least one collector (14), and (b-3) integrated in said conduit (20), at least one stop valve (18). The stop valve (18) is situated at a distance from the collector (14) which does not exceed 60 cm. The perforated plate (22) is provided with holes which are arranged in rows parallel to each other but not in parallel rows with respect to the sides of said perforated plate. The rows are inclined with respect to two opposite sides of the plate (22) of an acute angle.
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公开(公告)号：US20220316018A1
公开(公告)日：2022-10-06
申请号：US17708078
申请日：2022-03-30
申请人： Neturen Co., Ltd.
IPC分类号： C21D1/667
摘要： A cooling jacket includes a coolant supply member that circulates a coolant, and a coolant injection member to which the coolant is supplied from the coolant supply member, the coolant injection member provided with multiple injection holes through which the coolant is injected. The coolant injection surface of the coolant injection member opposing the workpiece has an upper region, a central region, and a lower region arranged along a vertical direction. An area of each injection hole provided in the central region is larger than an area of each injection hole provided in the upper region and an area of each injection hole provided in the lower region. The coolant injection member moves relative to a workpiece in a horizontal direction. A densest direction in which the multiple injection holes are arranged at the shortest intervals is inclined with respect to both the horizontal direction and the vertical direction.
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公开(公告)号：US11425799B2
公开(公告)日：2022-08-23
申请号：US16129915
申请日：2018-09-13
发明人： Masayuki Orihara , Hiroaki Mase , Yasuaki Matsumoto , Junko Tanaka , Ryosuke Fukuchi , Hiroko Watanabe , Yasufumi Nakai , Akihiro Hanaki
摘要： A heating apparatus (2) includes a high frequency power supply (3), a left conductive plate (4), a right conductive plate (5), a left heating coil (11), and a right heating coil (12). The left heating coil (11) includes a left conductor portion (21). The left conductor portion (21) faces a gear tooth (7a) of a helical gear (7) and extends in a direction orthogonal to the direction in which the gear tooth (7a) extends. The left heating coil (11) includes a focusing magnetic body (31) which focuses magnetic flux in the left conductor portion (21) and concentrates the magnetic flux on a surface of the gear tooth (7a). The left heating coil (11) includes an upper inducing magnetic body (32) which induces a part of the magnetic flux flowing in a tooth root of the gear tooth (7a) into a tooth tip of the gear tooth (7a).
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公开(公告)号：US11359254B2
公开(公告)日：2022-06-14
申请号：US16072631
申请日：2017-01-25
申请人： SCHWARTZ GMBH
发明人： Andreas Reinartz
摘要： Disclosed are implementations for heat treatment of steel components. In one or more first regions of a steel component, a predominantly austenitic structure can be adjusted, from which, by way of quenching, a mainly martensitic structure is educible. In one or more second regions of the steel component, there is a mainly bainitic structure, wherein the metal component is initially heated in a first furnace to a temperature above the Ac3 temperature. Subsequently, the steel component is transferred into a treatment station, wherein the steel component can cool down during the transfer. In the treatment station, the one or more second regions of the steel component are cooled down to a cooling stop temperatures ϑ2 during a treatment period. Subsequently, said metal component is transferred to a second furnace, wherein the temperature of the one or more second regions increases again to a temperature below the Ac3 temperature.
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公开(公告)号：US11313003B2
公开(公告)日：2022-04-26
申请号：US16603415
申请日：2018-03-28
申请人： SCHWARTZ GMBH
发明人： Andreas Reinartz , Jörg Winkel , Frank Wilden
摘要： A tempering station for the partial heat treatment of a metal component, which includes an apparatus for the heat treatment of a metal component, and the use of at least one tangential nozzle in a tempering station for the partial heat treatment of a metal component. The tempering station for partial heat treatment of the metallic component comprises a processing plane disposed in the tempering station, the component being able to be disposed in said plane, and at least one nozzle which points to the processing plane and is provided and adapted for discharging a fluid stream for cooling at least a first sub-area of the component, wherein the at least one nozzle is a tangential nozzle. The tempering station and the apparatus make it possible in particular to adjust, as reliably and/or precisely as possible, a transition region between the different heat-treated sub-areas of the component, in particular to keep said region as small as possible.
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公开(公告)号：US11291087B2
公开(公告)日：2022-03-29
申请号：US16283952
申请日：2019-02-25
申请人： NETUREN CO., LTD.
摘要： A heating apparatus and a heating method are provided. The heating apparatus includes a coil configured to receive AC power to form a magnetic field that inductively heats a workpiece, a spray unit configured to spray cooling fluid including a liquid to the coil in a form of mist at least during a period in which the AC power is supplied to the coil. Alternatively, the spray unit may be configured to spray the cooling fluid in the form of mist to a heating target portion of the workpiece placed in the magnetic field at least during the period in which the AC power is supplied to the coil.
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公开(公告)号：US11203794B2
公开(公告)日：2021-12-21
申请号：US15762810
申请日：2016-09-21
发明人： Yaoheng Liu , Zhonghua Zhang , Xiaobo Wang
IPC分类号： C21D9/08 , C22C38/04 , C22C38/08 , C21D11/00 , C22C38/06 , B21B19/04 , C21D1/667 , C21D1/18 , C21D6/00 , C22C38/00 , C22C38/02 , C22C38/12 , C22C38/40 , C21D8/10
摘要： A method for manufacturing a bainite high-strength seamless steel tube, comprising the following steps: smelting, manufacturing a billet, heating, perforating, rolling, stretch reducing or sizing to obtain tube, and cooling. In the cooling step, the quenching starting temperature is controlled to be at least 20° C. higher than the Ar3 temperature of the steel grade; the finish cooling temperature is controlled to be within a range between T1 and T2, where T1=519-423 C-30.4Mn, T2=780-270 C-90Mn, and the units of the T1 and the T2 are ° C.; in the formulas, C and Mn respectively represent the mass percents of element C and element Mn of the steel grade, the content of the element C is 0.06-0.2%, and the content of the element Mn is 1-2.5%; the cooling rate is controlled to be 15-80° C./s; and the finished product of the bainite high-strength seamless steel tube is directly obtained after the cooling step. The manufacturing of a bainite high-strength seamless steel tube using the method requires neither the addition of precious alloying elements nor the subsequent heat treatment. Therefore the production costs are low.
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