公开(公告)号：US20250027180A1

公开(公告)日：2025-01-23

申请号：US18768161

申请日：2024-07-10

Applicant: ROLLS-ROYCE plc

Inventor： Zhong CHEN ,  Zhiqiang LI ,  Joo Tien OH ,  Vincent B. GILL ,  Alexis LAMBOURNE

IPC: C21D1/04 ,  C21D6/00 ,  C21D9/00 ,  C21D11/00 ,  H02K15/02

Abstract: A method of treating an iron-cobalt component is disclosed. The method comprises: heat treating the component using a temperature of at least 700° C.; applying a static magnetic field of at least 3000 A/m to the component during the heat treatment. Also disclosed is a furnace for treating the iron-cobalt component, and a method of forming a stator for a transverse flux electric machine.

公开(公告)号：US20230265539A1

公开(公告)日：2023-08-24

申请号：US18005186

申请日：2021-05-11

Applicant: JFE STEEL CORPORATION

Inventor： Hidekazu MINAMI ,  Kazuki ENDOH ,  Yuki TOJI

IPC: C21D9/56 ,  C21D9/46 ,  C21D3/06 ,  C21D1/26 ,  C21D1/04 ,  C21D6/00 ,  C23C2/40 ,  C23C2/26 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC classification number: C21D9/562 ,  C21D9/561 ,  C21D9/46 ,  C21D3/06 ,  C21D1/26 ,  C21D1/04 ,  C21D6/008 ,  C21D6/005 ,  C23C2/40 ,  C23C2/26 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  C22C38/001 ,  C21D2241/00 ,  C22C2202/04

Abstract: Provided is a continuous annealing line capable of producing a steel sheet excellent in hydrogen embrittlement resistance. A continuous annealing line 100 comprises: a payoff reel 10 configured to uncoil a cold-rolled coil C to feed a cold-rolled steel sheet S; an annealing furnace 20 configured to continuously anneal the cold-rolled steel sheet S and including a heating zone 22, a soaking zone 24, and a cooling zone 26 that are arranged from an upstream side in a sheet passing direction; a downstream line 30 configured to continuously pass the cold-rolled steel sheet S discharged from the annealing furnace 20 therethrough; a tension reel 50 configured to coil the cold-rolled steel sheet S; and a sound wave irradiator 60 configured to irradiate the cold-rolled steel sheet S being passed from the cooling zone 26 to the tension reel 50 with sound waves.

公开(公告)号：US20230026647A1

公开(公告)日：2023-01-26

申请号：US17787841

申请日：2020-12-18

Applicant: AUTOTECH ENGINEERING S.L.

Inventor： Daniel PALO

IPC: C21D9/46 ,  C21D1/613 ,  C21D1/04 ,  C21D1/18

Abstract: The present invention relates to a process for forming a metal component (20), the process comprising the steps of heating a metal blank (20) coated with a protective layer; cooling said metal blank (20) in a confined space (14), said cooling involving cooling by means of a gas, the gas being cooled by heat exchange with a cooling surface of a heat sink (22) inside said confined space (14), wherein a low frequency sound wave is provided into said confined space (14) in order to improve heat exchange both between the gas and a cooling surface of the at least one heat sink (22), and between the gas and the metal component (20), wherein the heated coated blank is cooled to a temperature below the melting point of the protective layer, and forming the coated blank to a component. The invention also relates to a production line for performing the process.

公开(公告)号：US11479837B2

公开(公告)日：2022-10-25

申请号：US15716577

申请日：2017-09-27

Applicant: Novelis Inc.

Inventor： David Michael Custers

IPC: C22F1/04 ,  B21C47/18 ,  B21C47/34 ,  H05B6/10 ,  B21C47/16 ,  B65H29/00 ,  B65H29/20 ,  B21D22/02 ,  B21D37/16 ,  C21D1/42 ,  F27D99/00 ,  H05B6/32 ,  H05B6/36 ,  B21B39/02 ,  B21B39/34 ,  B21C37/02 ,  C21D1/04 ,  C22C21/02 ,  C22C21/06 ,  C22C21/10 ,  C22C21/12 ,  B65G54/02 ,  C22F1/02 ,  H02N15/00 ,  F27D19/00

Abstract: Systems and methods of pre-ageing of a metal strip during metal processing include passing the metal strip adjacent a magnetic rotor of a reheater. The systems and methods also include heating the metal strip through the magnetic rotor by rotating the magnetic rotor. Rotating the magnetic rotor induces a magnetic field into the metal strip such that the metal strip is heated.

公开(公告)号：US20210292860A1

公开(公告)日：2021-09-23

申请号：US17253439

申请日：2019-06-19

Applicant: Gestamp Hardtech AB

Inventor： Mats Olsson

IPC: C21D1/04 ,  C21D1/84 ,  C21D1/09 ,  C21D9/48 ,  C21D9/00 ,  B06B1/20 ,  F28F13/10 ,  F28F3/02

Abstract: The invention relates to an apparatus (1) for cooling an automobile component (20) by means of a gas, the apparatus comprising a cooling box (11) with a re-closeable opening (12) for receiving an automobile component (20) to be cooled, wherein at least one heat sink (13) is provided inside the cooling box (11) for cooling of the gas, and wherein the apparatus (10) includes at least one infra sound pulsator (2, 3) arranged to provide an infra sound into said cooling box (11) to improve heat exchange of the gas both with a cooling surface of the at least one heat sink (13), and with the automobile component (20). The invention also relates to a process for cooling an automobile component in such an apparatus.

公开(公告)号：US10910927B2

公开(公告)日：2021-02-02

申请号：US15926125

申请日：2018-03-20

Applicant: Ford Global Technologies, LLC

Inventor： Chuanbing Rong ,  Feng Liang ,  Michael W. Degner

IPC: H02K15/02 ,  H02K15/03 ,  C21D8/12 ,  B21D28/22 ,  C21D1/04 ,  H02K1/16 ,  H02K1/27 ,  C21D1/42 ,  H01F1/153 ,  H01F1/147

Abstract: A method of manufacturing a stator is provided. The method may include stamping steel into laminations each having an inner edge area defining a residual stress associated with a magnetic permeability. The method may also include exposing the laminations to a changing magnetic field such that, for each of the laminations, a density of resulting eddy currents is greatest near the inner edge area to heat the same relative to central areas of the lamination to decrease the residual stress and core loss.

公开(公告)号：US20190296619A1

公开(公告)日：2019-09-26

申请号：US15926125

申请日：2018-03-20

Applicant: Ford Global Technologies, LLC

Inventor： Chuanbing RONG ,  Feng LIANG ,  Michael W. DEGNER

IPC: H02K15/02 ,  H02K15/03 ,  C21D8/12 ,  B21D28/22 ,  C21D1/42 ,  C21D1/04 ,  H02K1/16 ,  H02K1/27

Abstract: A method of manufacturing a stator is provided. The method may include stamping steel into laminations each having an inner edge area defining a residual stress associated with a magnetic permeability. The method may also include exposing the laminations to a changing magnetic field such that, for each of the laminations, a density of resulting eddy currents is greatest near the inner edge area to heat the same relative to central areas of the lamination to decrease the residual stress and core loss.

公开(公告)号：US10240225B2

公开(公告)日：2019-03-26

申请号：US14856703

申请日：2015-09-17

Applicant: HITACHI, LTD.

Inventor： Matahiro Komuro ,  Masafumi Noujima ,  Naoya Okizaki

IPC: C21D1/34 ,  C22C38/44 ,  C21D1/40 ,  C21D1/04 ,  C21D6/00 ,  C22C38/42 ,  C22C38/04 ,  C22C38/22 ,  C22C38/02 ,  C22C38/24 ,  C22C38/10 ,  C22C38/00 ,  C22C38/30 ,  C22C38/52 ,  C23C8/22 ,  C23C8/26 ,  H01F1/16

Abstract: Disclosed herein is a technique to reduce the residual stress of a steel material while improving the mechanical property and the corrosion resistance of the material. A steel material is provided that includes a plurality of ferrite crystal grains, and a laminar iron-rich phase formed at unidirectionally occurring grain boundaries of all grain boundaries of the ferrite crystal grains. A material processing method is provided that includes: heating a steel material that contains a plurality of ferrite crystal grains; applying a magnetic field to a heated portion while heating the steel material; applying an electric field to the heated portion in a direction that crosses the direction of the applied magnetic field while heating the steel material; and measuring a displacement occurring in the steel material under the magnetic field and the electric field.

公开(公告)号：US20190062855A1

公开(公告)日：2019-02-28

申请号：US16083096

申请日：2016-12-21

Applicant: TATA STEEL LIMITED

Inventor： Saha RAJIB ,  Kundu SAURABH ,  Chandra SANJAY

IPC: C21D1/04 ,  C21D1/42 ,  C21D10/00

Abstract: The present disclosure discloses a method for heat treating an iron-carbon alloy. The method comprises acts of heating the iron-carbon alloy to a first pre-determined temperature at a pre-determined heating rate, holding the iron-carbon alloy at the first pre-determined temperature for a pre-set period of time. The method further comprises acts of cooling the iron-carbon alloy to a second pre-determined temperature at a pre-determined cooling rate and inducing magnetic field on the iron-carbon alloy selectively during at least one of heating and cooling of the iron-carbon alloy. The induction of magnetic field on the iron-carbon alloy results in microstructural changes to improve formation of pearlitic structure in the iron-carbon alloy.

公开(公告)号：US20180051751A1

公开(公告)日：2018-02-22

申请号：US15370239

申请日：2016-12-06

Applicant: WUHAN UNIVERSITY OF TECHNOLOGY

Inventor： Dongsheng QIAN ,  Lin HUA ,  Huajie MAO ,  Qinglong LIU ,  Jiadong DENG

IPC: F16C33/64 ,  B21B37/46 ,  C21D9/40 ,  C21D8/00 ,  C21D1/58 ,  C21D1/613 ,  C21D1/04 ,  C21D1/18

CPC classification number: F16C33/64 ,  B21B5/00 ,  B21B9/00 ,  B21B37/46 ,  C21D1/04 ,  C21D1/18 ,  C21D1/30 ,  C21D1/58 ,  C21D1/613 ,  C21D6/04 ,  C21D7/02 ,  C21D8/005 ,  C21D9/40 ,  F16C2202/06 ,  F16C2220/44 ,  F16C2223/10 ,  F16C2322/39

Abstract: A manufacturing method of precision machine tool bearing with high precision stability includes the procedures: (1) microstructural stabilization of bearing body: by cold ring rolling, two liquid quenching, ultrasonic assisted multiple cryo-tempering treatment and stress ageing treatment, the bearing body with high microstructure stability can be obtained; (2) precision machining; (3) internal stress relaxation of bearing body: after precision machining, by executing magnetic treatment on the bearing body, bearing ring with high microstructure stability and low internal stresses can be obtained; and (4) bearing assembly: finally precision machine tool bearing with high precision stability can be obtained. Considering that the critical factors affecting the precision stability of bearing is the degree of microstructure stability and internal stresses, by improving the microstructure stability and reducing residual stress in multistage manufacture phase, precision stability of precision machine tool bearing should be promoted.