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1.发明公开
公开(公告)号：EP3901321A1
公开(公告)日：2021-10-27
申请号：EP21174102.0
申请日：2017-11-23
申请人： ArcelorMittal
IPC分类号： C23C2/40 , C23C2/12 , C23C2/26 , C23C2/02 , C22C38/58 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/06
摘要： A method for manufacturing a hot-rolled and coated steel sheet having a thickness between 1.8 mm and 5 mm, comprising providing a semi-product having a composition comprising: 0.04% ≤ C ≤ 0.38%, 0.40% ≤ Mn ≤ 3%, 0.005% ≤ Si ≤ 0.70%, 0.005% ≤ Al ≤ 0.1%, 0.001% ≤ Cr ≤ 2%, 0.001% ≤ Ni ≤ 2%, 0.001% ≤ Ti ≤ 0.2%, Nb ≤ 0.1%, B ≤ 0.010%, 0.0005% ≤ N ≤ 0.010%, 0.0001% ≤ S ≤ 0.05%, 0.0001% ≤ P ≤ 0.1%, Mo ≤ 0.65 %, W ≤ 0.30%, Ca ≤ 0.006%, hot-rolling with a final rolling temperature FRT, to obtain a hot-rolled steel product having a thickness between 1.8 mm and 5 mm, then cooling down to a coiling temperature T coil satisfying: 450°C ≤ T coil ≤ T coilmax with T coilmax=650-140×fγ , T coilmax being expressed in degrees Celsius and fy designating the austenite fraction just before the coiling, and coiling to obtain a hot-rolled steel substrate, pickling and coating the hot-rolled steel substrate with Al or an Al alloy by continuous hot-dipping in a bath, to obtain a hot-rolled and coated steel sheet comprising a hot-rolled steel sheet and an Al or an Al alloy coating, having a thickness comprised between 10 and 33 µm, on each side of the hot-rolled steel sheet.
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2.发明公开
公开(公告)号：EP3656888A1
公开(公告)日：2020-05-27
申请号：EP19217807.7
申请日：2017-11-23
申请人： ArcelorMittal
IPC分类号： C23C2/40 , C23C2/12 , C23C2/26 , C23C2/02 , C22C38/58 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/06 , B32B15/01 , B23K103/04 , B21D22/02 , C23C2/06 , C22C18/00 , C21D8/02 , C22C38/04
摘要： A method for manufacturing a hot-rolled and coated steel sheet having a thickness between 1.8 mm and 5 mm, comprising providing a semi-product having a composition comprising: 0.38% ≤ C ≤ 0.43%, 0.05% ≤ Mn ≤ 0.40%, 0.10% ≤ Si ≤ 0.70%, 0.015% ≤ Al ≤ 0.070%, 0.001% ≤ Cr ≤ 2%, 0.25% ≤ Ni ≤ 2%, 0.015% ≤ Ti ≤ 0.1%, 0% ≤ Nb ≤ 0.06%, 0.0005% ≤ B ≤ 0.010%, 0.003% ≤ N ≤ 0.010%, 0.0001% ≤ S ≤ 0.005%, 0.0001% ≤ P ≤ 0.025%, the titanium and nitrogen contents satisfying the following relationship: Ti/N > 3.42, the carbon, manganese, chromium and silicon contents satisfying the following relationship: 2.6C + Mn/5.3 + Cr/13 + Si/15 ≥ 1.1, and optionally comprising one of several of the following elements: 0.05% ≤ Mo ≤ 0.65% 25 0.001% ≤ W ≤ 0.30% 0.0005% ≤ Ca ≤ 0.005%, hot-rolling the steel semi-product with a final rolling temperature FRT comprised between 840°C and 1000°C, so as to obtain a hot-rolled steel product having a thickness comprised between 1.8 mm and 5 mm, then cooling down to a coiling temperature Tcoil satisfying 450°C ≤ Tcoil ≤ 495°C, pickling and coating the hot-rolled steel substrate with Al or an Al alloy by continuous hot-dipping in a bath, to obtain a hot-rolled and coated steel sheet comprising a hot-rolled steel sheet and an Al or an Al alloy coating, having a thickness comprised between 10 and 33 µm, on each side of the hot-rolled steel sheet.
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5.发明公开PROCÉDÉ DE FABRICATION DE TÔLES D'ACIER POUR DURCISSEMENT SOUS PRESSE, ET PIÈCES OBTENUES PAR CE PROCÉDÉ 审中-公开用于生产钢板，热成形和表示这个方法来接收部件
公开(公告)号：EP3175006A1
公开(公告)日：2017-06-07
申请号：EP15753989.1
申请日：2015-07-29
申请人： ArcelorMittal
IPC分类号： C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/18 , C22C38/38 , C22C38/40 , C21D8/02
CPC分类号： C21D9/0068 , B21B3/02 , B21D22/022 , C21D1/06 , C21D1/18 , C21D1/673 , C21D8/005 , C21D8/02 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D8/0278 , C21D9/46 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/38 , C22C38/40 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , C23C2/06 , C23C2/12 , C23C2/28 , C23C2/40 , C23F17/00
摘要： The invention relates to a rolled steel sheet, for press hardening, the chemical composition of which comprises, the contents being expressed by weight: 0.24% ≤ C ≤ 0.38%, 0.40% ≤ Mn ≤ 3%, 0.10% ≤ Si ≤ 0.70%, 0.015% ≤ Al ≤ 0.070%, 0% ≤ Cr ≤ 2%, 0.25% ≤ Ni ≤ 2%, 0.015% ≤ Ti ≤ 0.10%, 0 % ≤ Nb ≤ 0.060%, 0.0005% ≤ B ≤ 0.0040%, 0.003% ≤ N ≤ 0.010%, 0.0001% ≤ S ≤ 0.005%, 0.0001% ≤ P ≤ 0.025%, it being understood that the titanium and nitrogen contents satisfy: Ti/N > 3.42, and that the carbon, manganese, chromium and silicon contents satisfy: formula (I), the chemical composition optionally comprising one or more of the following elements: 0.05% ≤ Mo ≤ 0.65%, 0,001% ≤ W ≤ 0.30%, 0.0005 % ≤ Ca ≤ 0.005%, the remainder consisting of iron and of unavoidable impurities originating from the production, the sheet containing a nickel content Ni
surf at any point of the steel in the region of the surface of said sheet over a depth Δ, such that: Ni
surf > Ni
nom , Ni
nom denoting the nominal nickel content of the steel, and such that, Ni
max denoting the maximum nickel content within Δ: formula (II) and such that: formula (III) the depth Δ being expressed in micrometres, the Ni
max and Ni
nom contents being expressed as weight percentages.摘要翻译： 本发明涉及轧制钢板，用于模压淬火，该含量以重量计过表达，其包含的化学成分：0.24％至≤C≤0：38％，0.40％≤的Mn≤3％≤0.10％≤硅≤0.70％ ，0.015％≤的Al≤0.070％0％≤的Cr≤2％，0.25％≤倪≤2％，0.015％的Ti≤0.10≤％至0％的Nb≤≤0.060％0.0005％≤乙≤0.0040％，0.003 ％≤N≤0.010％，0.0001％≤小号≤0.005％，0.0001％≤P≤0.025％，它被理解的，DASS模具钛和氮含量满足的Ti / N> 3.42，也做了碳，锰，铬和硅 含量满足：式（I），化学组合物任选地包含以下元素中的一种或多种：0.05％≤沫≤0.65％，0.001％≤w ^≤0.30％至0.0005％≤钙≤0.005％，其余铁由......组成 和不可避免的杂质从生产源自的，薄片包含镍含量Nisurf在所述片材上的深度Δ的表面的区域中的钢的任何点，求第 于：Nisurf> Ninom，Ninom表示钢的标称镍含量，并且使得，NIMAX表示内Δ最大镍含量：式（II），并且使得：式（III）的深度Δ被过表达在微米，所述 NIMAX和Ninom内容被表示为重量百分比。
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6.发明公开
公开(公告)号：EP3656552A1
公开(公告)日：2020-05-27
申请号：EP19218220.2
申请日：2017-11-23
申请人： ArcelorMittal
IPC分类号： B32B15/01 , B21D22/02 , C21D8/02 , C23C2/02 , C23C2/06 , C23C2/12 , C23C2/26 , C23C2/40 , C22C18/04 , C22C21/02 , C22C21/04 , C22C21/08 , C22C21/10 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
摘要： A method for manufacturing a hot-rolled and coated steel sheet having a thickness between 1.8 mm and 5 mm, comprising providing a semi-product having a composition comprising: 0.24% ≤ C ≤ 0.38%, 0.40% ≤ Mn ≤ 3%, 0.10% ≤ Si ≤ 0.70%, 0.015% ≤ Al ≤ 0.070%, 0.001% ≤ Cr ≤ 2%, 0.25% ≤ Ni ≤ 2%, 0.015% ≤ Ti ≤ 0.1%, 0% ≤ Nb ≤ 0.06%, 0.0005% ≤ B ≤ 0.010%, 0.003% ≤ N ≤ 0.010%, 0.0001% ≤ S ≤ 0.005%, 0.0001% ≤ P ≤ 0.025%, the titanium and nitrogen contents satisfying the following relationship: Ti/N > 3.42, the carbon, manganese, chromium and silicon contents satisfying the following relationship: 2.6C + Mn/5.3 + Cr/13 + Si/15 ≥ 1.1, and optionally comprising one of several of the following elements: 0.05% ≤ Mo ≤ 0.65% 25 0.001% ≤ W ≤ 0.30% 0.0005% ≤ Ca ≤ 0.005%, hot-rolling the steel semi-product with a final rolling temperature FRT comprised between 840°C and 1000°C, so as to obtain a hot-rolled steel product having a thickness comprised between 1.8 mm and 5 mm, then cooling down to a coiling temperature Tcoil satisfying 450°C ≤ Tcoil ≤ 495°C, pickling and coating the hot-rolled steel substrate with Al or an Al alloy by continuous hot-dipping in a bath, to obtain a hot-rolled and coated steel sheet comprising a hot-rolled steel sheet and an Al or an Al alloy coating, having a thickness comprised between 10 and 33 µm, on each side of the hot-rolled steel sheet.
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8.发明公开
公开(公告)号：EP3544808A1
公开(公告)日：2019-10-02
申请号：EP17804967.2
申请日：2017-11-23
申请人： ArcelorMittal
IPC分类号： B32B15/01
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9.发明公开
公开(公告)号：EP4417724A2
公开(公告)日：2024-08-21
申请号：EP24185892.7
申请日：2017-11-23
申请人： ArcelorMittal
IPC分类号： C22C18/04
CPC分类号： B21D22/022 , B32B15/012 , B32B15/013 , C21D8/0226 , C23C2/06 , C23C2/12 , C23C2/26 , C23C2/40 , C22C18/04 , C22C21/02 , C22C21/10 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , C21D2211/00120130101 , C21D2211/00520130101 , C21D2211/00920130101 , C22C18/00 , C21D8/0263 , C21D8/0278 , B23K2103/0420180801 , C21D1/673 , C21D8/005 , C21D9/0068 , C23C2/024 , C23C2/28 , C23C2/0224 , C23C2/02
摘要： A method for manufacturing a hot-rolled and coated steel sheet having a thickness between 1.8 mm and 5 mm, comprising providing a semi-product having a composition comprising: 0.04% ≤ C ≤ 0.38%, 0.40% ≤ Mn ≤ 3%, 0.005% ≤ Si ≤ 0.70%, 0.005% ≤ Al ≤ 0.1%, 0.001% ≤ Cr ≤ 2%, 0.001% ≤ Ni ≤ 2%, 0.001% ≤ Ti ≤ 0.2%, Nb ≤ 0.1%, B ≤ 0.010%, 0.0005% ≤ N ≤ 0.010%, 0.0001% ≤ S ≤ 0.05%, 0.0001% ≤ P ≤ 0.1%, Mo ≤ 0.65 %, W ≤ 0.30%, Ca ≤ 0.006%, hot-rolling with a final rolling temperature FRT, to obtain a hot-rolled steel product having a thickness between 1.8 mm and 5 mm, then cooling down to a coiling temperature Tcoil satisfying: 450°C ≤ Tcoil ≤ Tcoilmax with Tcoilmax=650-140×fγ, Tcoilmax being expressed in degrees Celsius and fy designating the austenite fraction just before the coiling, and coiling to obtain a hot-rolled steel substrate, pickling and coating the hot-rolled steel substrate with Al or an Al alloy by continuous hot-dipping in a bath, to obtain a hot-rolled and coated steel sheet comprising a hot-rolled steel sheet and an Al or an Al alloy coating, having a thickness comprised between 20 and 33 µm, on each side of the hot-rolled steel sheet.
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10.发明公开
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