利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

688 条记录 (耗时 0.025 秒)

    Manufacturing process of press hardened parts with high productivity
    1.
    发明授权
    Manufacturing process of press hardened parts with high productivity 有权

    公开(公告)号：US12110572B2

    公开(公告)日：2024-10-08

    申请号：US16968880

    申请日：2019-03-05

    申请人： ARCELORMITTAL

    发明人： Alexandre Blaise ,  Pascal Drillet ,  Thierry Sturel

    IPC分类号： C21D9/48 ,  C21D1/673 ,  C21D8/04 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40

    CPC分类号： C21D9/48 ,  C21D1/673 ,  C21D8/0484 ,  C23C2/12 ,  C23C2/261 ,  C23C2/28 ,  C23C2/29 ,  C23C2/40 ,  C21D2211/005 ,  C21D2211/009

    摘要： A process for manufacturing a non-stamped prealloyed steel coil, sheet or blank, comprising the following successive steps of: providing a non-stamped precoated steel coil, sheet or blank composed of a steel substrate covered by a precoating of aluminum, or aluminum-based alloy, or aluminum alloy, wherein the precoating thickness is comprised between 10 and 35 micrometers on each side of the steel coil, sheet or blank, then heating the non-stamped steel coil, sheet or blank in a furnace under an atmosphere containing at least 5% oxygen, up to a temperature θ1 comprised between 750 and 1000° C., for a duration t1 comprised between t1min and t1max, wherein: t1min=23500/(θ1−729.5) and t1max=4.946×1041×θ1−13.08, t1 designating the total duration in the furnace, θ1 being expressed in ° C. and t1min and t1max being expressed in seconds, then cooling the non-stamped steel coil, sheet or blank at a cooling rate Vr1 down to a temperature θi, then maintaining the non-stamped steel coil, sheet or blank at a temperature θ2 comprised between 100 and 500° C., for a duration t2 comprised between 3 and 45 minutes, so to obtain a diffusible hydrogen less than 0.35 ppm.

    CONDUCTIVE POST-FURNACE HEATING OF SHEET FOR HOT FORMING
    6.
    发明申请
    CONDUCTIVE POST-FURNACE HEATING OF SHEET FOR HOT FORMING 有权

    公开(公告)号：US20220176434A1

    公开(公告)日：2022-06-09

    申请号：US17594664

    申请日：2020-05-06

    申请人： MAGNA INTERNATIONAL INC.

    发明人： Cangji SHI ,  Eric DENIJS ,  Pascal CHAREST

    IPC分类号： B21D22/02 ,  C21D1/25 ,  C21D1/42 ,  C21D1/673 ,  C21D7/13 ,  C21D8/04 ,  C21D9/48 ,  C21D11/00

    摘要： A system for producing components by hot forming includes a conductive post-furnace heat station, a furnace, a computer system, and a press. The computer system comprises one or more physical processors operatively connected with the furnace in and the conductive post-furnace heat station. The one or more physical processors being programmed with computer program instructions which, when executed cause the computer system to control the furnace to heat the blank to a temperature that is below AC3 temperature; and control the conductive post-furnace heat station to heat a portion of the heated blank to a temperature above the AC3 temperature by thermal conduction. The press is constructed and arranged to receive the post-heated blank from the post-furnace heat station and to form the post-heated blank into the shape of the component.

    STEEL SUBSTRATE FOR PAINTED PARTS
    8.
    发明申请
    STEEL SUBSTRATE FOR PAINTED PARTS 有权

    公开(公告)号：US20220064765A1

    公开(公告)日：2022-03-03

    申请号：US17500253

    申请日：2021-10-13

    申请人： TATA STEEL IJMUIDEN B.V.

    发明人： Maxim Peter AARNTS ,  Job Anthonius VAN DER HOEVEN ,  Edgar Matthijs TOOSE

    IPC分类号： C22C38/14 ,  C22C38/12 ,  C21D8/04

    摘要： The invention relates to a steel strip, sheet or blank used for painted parts, wherein the steel strip, sheet or blank is optionally metallic coated. The steel is an Ultra Low Carbon (ULC) steel type having a composition of (in weight %): C: max 0.007 Mn: max 1.2 Si: max 0.5 Al: max 0.1 P: max 0.15 S: 0.003-0.045 N: max 0.01 Ti, Nb, Mo: if Ti≥0.005 and Nb≥0.005: 0.06≤4Ti+4Nb+2Mo≤0.60 otherwise 0.06≤Ti+2Nb+2Mo≤0.60 and one or more of the optional elements: Cu: max 0.10, Cr: max 0.06. Ni: max 0.08, B: max 0.0015, V: max 0.01, Ca: max 0.01, Co: max 0.01, Sn: max 0.01 resulting in a delta Waviness ΔWsa≤0.12 μm of the surface after the forming of the strip, sheet or blank.