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    連続焼鈍装置及び連続溶融亜鉛めっき装置、並びに鋼板の製造方法
    4.
    发明申请
    連続焼鈍装置及び連続溶融亜鉛めっき装置、並びに鋼板の製造方法 审中-公开

    公开(公告)号：WO2023286440A1

    公开(公告)日：2023-01-19

    申请号：PCT/JP2022/020579

    申请日：2022-05-17

    Applicant: ＪＦＥスチール株式会社

    Inventor： 南　秀和 ,  遠藤　一輝 ,  田路　勇樹

    IPC: C21D3/06 ,  C21D1/26 ,  C21D9/56 ,  C22C38/00 ,  C22C38/06 ,  C22C38/58 ,  C22C38/60 ,  C23C2/00 ,  C23C2/06 ,  C23C2/40

    Abstract: 耐水素脆化特性に優れた鋼板を製造することが可能な連続焼鈍装置を提供する。本発明の連続焼鈍装置（１００）は、冷延コイル（Ｃ）から冷延鋼板（Ｓ）を払い出すペイオフリール（１０）と、冷延鋼板（Ｓ）を通板させて連続焼鈍する焼鈍炉（２０）であって、通板方向上流側から加熱帯（２２）、均熱帯（２４）、及び冷却帯（２６）が位置し、加熱帯（２２）及び均熱帯（２４）では、水素を含む還元性雰囲気で冷延鋼板（Ｓ）を焼鈍し、冷却帯（２６）では冷延鋼板（Ｓ）を冷却する焼鈍炉（２０）と、焼鈍炉（２０）から排出された冷延鋼板（Ｓ）を引き続き通板させる下流設備（３０）と、下流設備（３０）を通板中の冷延鋼板（Ｓ）を巻き取るテンションリール（５０）と、冷却帯（２６）からテンションリール（５０）までを通板中の冷延鋼板（Ｓ）に対して、前記冷延鋼板の振動の周波数が１００Ｈｚ以上１０００００Ｈｚ以下となり、かつ、前記冷延鋼板の最大振幅が１０ｎｍ以上５００μｍ以下となるように振動を付加する振動付加装置（６０又は７０）と、を有する。

    METHOD OF MANUFACTURING OF A STEEL PART
    5.
    发明申请
    METHOD OF MANUFACTURING OF A STEEL PART 审中-公开

    公开(公告)号：WO2023285867A1

    公开(公告)日：2023-01-19

    申请号：PCT/IB2021/056448

    申请日：2021-07-16

    Applicant: ARCELORMITTAL

    Inventor： FORT, Pierrick ,  NADLER, Aude ,  ZHU, Kangying ,  PERLADE, Astrid ,  SOLER, Michel ,  KEGEL, Frédéric

    IPC: C21D1/26 ,  C21D6/00 ,  C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/38 ,  C22C38/34

    Abstract: The invention deals with a process for manufacturing a steel part, comprising the following successive steps: providing a steel sheet having a composition comprising by weight percent: C: 0.05 – 0.25 %, Mn: 3.5 – 8 %, Si 0.1 - 2%, Al: 0.01 - 3%, S ≤ 0.010 %, P ≤ 0.020 %, N ≤ 0.008 %, and comprising optionally one or more of the following elements, in weight percentage: Cr: 0 – 0.5%, Mo : 0 – 0.25%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, and having a microstructure comprising, in surface fraction, between 10% and 50% of retained austenite, 50% or more of the sum of ferrite, bainite and tempered martensite, less than 5% of fresh martensite, less than 2% of carbides and a carbon [C]A content in austenite, strictly more than 0.4% and strictly less than 0.7%, cutting said steel sheet to a predetermined shape, so as to obtain a steel blank, heating the steel blank to a temperature Twarm comprised from (Md30-150°C) to (Md30-50°C), punching or shearing and forming the heat-treated steel blank at the said Twarm temperature to obtain a steel part.

    PROCESS FOR OBTAINING A FINE-GRAINED MARTENSITIC STRUCTURE COMPONENT
    6.
    发明申请
    PROCESS FOR OBTAINING A FINE-GRAINED MARTENSITIC STRUCTURE COMPONENT 审中-公开

    公开(公告)号：WO2023281022A1

    公开(公告)日：2023-01-12

    申请号：PCT/EP2022/069001

    申请日：2022-07-07

    Applicant: DANMARKS TEKNISKE UNIVERSITET

    Inventor： VILLA, Matteo ,  CHRISTIANSEN, Thomas Lundin ,  DAHL, Kristian Vinter ,  SOMERS, Marcel A. J.

    IPC: C21D1/06 ,  C21D1/18 ,  C21D1/25 ,  C21D1/26 ,  C21D1/76 ,  C21D6/00 ,  C21D6/04 ,  C21D8/06 ,  C21D8/10 ,  C21D9/00 ,  C21D9/18 ,  C21D9/22 ,  C21D9/32 ,  C21D9/38 ,  C21D9/40 ,  C21D9/42 ,  C22C38/00 ,  C22C38/18 ,  C21D8/02

    Abstract: The disclosure relates to a process for the manufacture of a steel component comprising a fine-grained martensite structure component. The process comprises the steps of providing a steel component having an initial steel composition; introducing nitrogen into the steel component at a temperature T1 above 950°C, thereby creating an at least partly austenitic nitrogen-containing steel component; bringing the at least partly austenitic nitrogen-containing steel component to a temperature T2, such that austenite is decomposed into a steel component comprising at least an amount of carbon- and/or nitrogen-containing precipitates; bringing the steel component comprising at least an amount of carbon- and/or nitrogen-containing precipitates to a temperature T3 which is above T2, thereby creating an at least partly austenitic nitrogen-containing steel component optionally comprising at least an amount of carbon- and/or nitrogen-containing precipitates; and bringing the at least partly austenitic nitrogen-containing steel component to a temperature T4 that is below a martensite start temperature of the at least partly austenitic nitrogen-containing steel component for initiating transformation of at least some of the austenite into fine-grained martensite, thereby producing a steel component comprising a fine-grained martensite structure component.

    宽幅铁铬铝冷轧卷连续线退火酸洗的生产方法
    8.
    发明申请
    宽幅铁铬铝冷轧卷连续线退火酸洗的生产方法 审中-公开

    公开(公告)号：WO2022242514A1

    公开(公告)日：2022-11-24

    申请号：PCT/CN2022/092121

    申请日：2022-05-11

    Applicant: 山西太钢不锈钢股份有限公司

    Inventor： 杨密 ,  高培军 ,  范梦甜 ,  段维芳 ,  韩佳明 ,  张虎 ,  郑正

    IPC: C21D1/26 ,  C21D9/52 ,  C21D9/50 ,  C25F1/06

    Abstract: 本发明公开了一种铁铬铝冷轧卷连续线退火酸洗的生产方法，包括：(1)将相邻的两卷铁铬铝冷轧卷进行焊接，得到钢带；(2)对钢带进行脱脂处理；(3)对脱脂处理后的钢带进行退火处理；(4)将退火处理后的钢带冷却；(5)对冷却后的钢带进行酸洗处理；在步骤(3)中，在加热炉内先将脱脂处理后的钢带预加热到600-800℃，然后加热至最终热处理温度880-960℃，保温时间是1.0-3.0min/mm，加热炉内的张力密度是0.5-0.8Kg/mm 2。采用本发明的生产方法能够生产宽度900-1300mm、厚度0.5-1.2mm、卷重10吨以上的1Cr13Al4冷轧卷，其退火后晶粒度为4-6级，力学性能满足GB/T 1234-2012《高电阻电热合金》要求，成品为合格的2B表面。

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