利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

17 条记录 (耗时 0.007 秒)

    HIGH-STRENGTH AUSTENITE-BASED HIGH-MANGANESE STEEL MATERIAL AND MANUFACTURING METHOD FOR SAME
    1.
    发明公开
    HIGH-STRENGTH AUSTENITE-BASED HIGH-MANGANESE STEEL MATERIAL AND MANUFACTURING METHOD FOR SAME 审中-公开

    公开(公告)号：EP3730650A1

    公开(公告)日：2020-10-28

    申请号：EP18891203.4

    申请日：2018-12-20

    申请人： POSCO

    发明人： LEE, Un-Hae ,  HAN, Tae-Kyo ,  KANG, Sang-Deok ,  KIM, Sung-Kyu ,  KIM, Yong-Jin

    IPC分类号： C22C38/38 ,  C22C38/02 ,  C22C38/06 ,  C22C38/32 ,  C21D8/02 ,  C21D9/46

    摘要： A preferable aspect of the present invention provides a high-strength austenite-based high-manganese steel material and a manufacturing method for the same, the steel material containing 20-23 wt% of manganese (Mn), 0.3-0.5 wt% of carbon (C), 0.05-0.50 wt% of silicon (Si), 0.03 wt% or less (excluding 0%) of phosphor (P), 0.005 wt% or less (excluding 0%) of sulfur (S), 0.050 wt% or less (excluding 0%) of aluminum (Al), 2.5 wt% or less (including 0%) of chromium (Cr), 0.0005-0.01 wt% of boron (B), 0.03 wt% or less (excluding 0%) of nitrogen (N), and the balance Fe and other inevitable impurities, wherein a stacking fault energy (SFE) represented by relational formula 1 below is 3.05 mJ/m2 or more; a microstructure comprises, in area fraction, 95% or more (including 100%) of austenite; and a modified crystal grain system is contained in, in area fraction, 6% or more in an austenite recrystal grain. [Relational formula 1] SFE (mJ/m2) = -24.2 + 0.950 ∗ Mn + 39.0 ∗ C - 2.53 ∗ Si - 5.50 ∗ Al - 0.765 ∗ Cr, wherein Mn, C, Cr, Si, and Al each represent weight% of each component]

    STEEL SHEET FOR LOW-TEMPERATURE SERVICE HAVING EXCELLENT SURFACE PROCESSING QUALITY AND METHOD FOR MANUFACTURING SAME
    2.
    发明公开
    STEEL SHEET FOR LOW-TEMPERATURE SERVICE HAVING EXCELLENT SURFACE PROCESSING QUALITY AND METHOD FOR MANUFACTURING SAME 审中-公开
    用于具有优异表面处理质量的低温服务的钢板及其制造方法

    公开(公告)号：EP3239328A1

    公开(公告)日：2017-11-01

    申请号：EP15873529.0

    申请日：2015-12-11

    申请人： POSCO

    发明人： LEE, Soon-Gi ,  SUH, In-Shik ,  KIM, Yong-Jin ,  KANG, Sang-Deok

    IPC分类号： C22C38/04 ,  C22C38/38 ,  C22C38/20 ,  C21D8/02

    CPC分类号： C21D9/46 ,  C21D6/005 ,  C21D8/0205 ,  C21D8/0226 ,  C21D2211/001 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/20 ,  C22C38/28 ,  C22C38/38

    摘要： The present invention relates to a steel sheet for low-temperature service, which can be used at a wide temperature range from low temperature to room temperature in liquefied gas storage tanks and transport facilities, and provides: a steel sheet for low-temperature service having an excellent surface processing quality even after a processing processes is performed, such as a tension process; and a method for manufacturing the same. An aspect of the present invention relates to a steel sheet for low-temperature service having an excellent surface processing quality, the steel sheet for low-temperature service containing manganese (Mn, 15-35 wt%), carbon (C, satisfying 23. 6C + Mn ≥ 28 and 33.5C - Mn ≤ 23), copper (Cu, 5 wt% or less (excluding 0 wt%)), chrome (Cr, satisfying 28.5C + 4.4Cr ≤ 57 (excluding 0 wt%)), titanium (Ti, 0.01-0.5 wt%), nitrogen (N, 0.003-0.2 wt%), the balance iron (Fe), and other inevitable impurities, wherein Ti and N satisfy relational expression 1 below. [Relational expression 1] 1.0 ≤ Ti/N ≤ 4.5 (provided that, Mn, C, Cr, Ti, and N in the respective expressions mean wt% of respective ingredient contents).

    摘要翻译： 低温使用钢板技术领域本发明涉及一种低温使用钢板，其可以在液化气储罐和运输设备中在从低温到室温的宽温度范围内使用，并且提供：用于低温服务的钢板 即使在进行加工处理（例如拉伸处理）之后也具有优异的表面处理质量; 及其制造方法。 本发明的一个方面涉及一种表面加工品质优异的低温使用用钢板，其特征在于，含有锰（Mn：15〜35重量％），碳（C： 6C +Mn≥28和33.5C-Mn≤23），铜（Cu，5wt％或更少（不包括0wt％）），铬（Cr，满足28.5C +4.4Cr≤57（不包括0wt％）） ，钛（Ti，0.01-0.5重量％），氮（N，0.003-0.2重量％），余量为铁（Fe）等不可避免的杂质，其中Ti和N满足下面的关系式1。 [关系式1]1.0≤Ti/N≤4.5（其中，各式中的Mn，C，Cr，Ti，N表示各成分含量的wt％）。

    HIGH STRENGTH AUSTENITIC-BASED STEEL WITH REMARKABLE TOUGHNESS OF WELDING HEAT-AFFECTED ZONE AND PREPARATION METHOD THEREFOR
    6.
    发明公开
    HIGH STRENGTH AUSTENITIC-BASED STEEL WITH REMARKABLE TOUGHNESS OF WELDING HEAT-AFFECTED ZONE AND PREPARATION METHOD THEREFOR 有权
    根据上述制造焊接，加热区非凡的实力和工艺高强度钢奥氏体

    公开(公告)号：EP2940173A1

    公开(公告)日：2015-11-04

    申请号：EP13867247.2

    申请日：2013-12-24

    申请人： Posco

    发明人： LEE, Hak-Cheol ,  SUH, In-Shik ,  LEE, Soon-Gi ,  PARK, In-Gyu ,  KIM, Yong-Jin ,  LEE, Hong-Ju

    IPC分类号： C22C38/00 ,  C22C38/04 ,  C21D8/00 ,  C22C38/38

    摘要： The present invention relates to a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone and a preparation method therefor. One embodiment of the present invention provides: a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone, comprising 0.8-1.5 wt% of C, 15-22 wt% of Mn, 5 wt% or less of Cr (except 0), and the balance of Fe and other inevitable impurities, and further comprising at least one of the following (a) and (b), wherein the microstructure of a welding heat-affected zone comprises 90 % or more of austenite by volume fraction; and a preparation method therefor. (a) Mo: 0.1-1 % and B: 0.001-0.02 % (b) Ti: 0.01-0.3 % and N: 0.003-0.1 %

    摘要翻译： 本发明涉及到基于奥氏体系高强度钢的焊接热影响区显着的韧性和用于其的制备方法。 本发明的一个实施例提供：与焊接热影响区显着的韧性的高强度奥氏体基于-钢，Cr的含有C：0.8-1.5％（重量），锰的15至22重量％，5重量％或更少 （0除外），以及Fe和其它不可避免的杂质，并且进一步包含至少一个平衡的下述（a）和（b），worin焊接热影响区的微观结构由包含90％以上的奥氏体 体积分数; 及其制备方法为此。 （A）的Mo：0.1-1％和B：0.001〜0.02％（b）中的Ti：0.01〜0.3％和N：0.003〜0.1％

    STEEL MATERIAL HAVING EXCELLENT WEAR RESISTANCE AND MANUFACTURING METHOD FOR SAME
    9.
    发明公开
    STEEL MATERIAL HAVING EXCELLENT WEAR RESISTANCE AND MANUFACTURING METHOD FOR SAME 审中-公开

    公开(公告)号：EP3730649A1

    公开(公告)日：2020-10-28

    申请号：EP18890993.1

    申请日：2018-12-20

    申请人： POSCO

    发明人： KIM, Yong-Jin ,  JUNG, Young-Deok ,  KANG, Myeong-Hun ,  YUN, Yeo-Sun ,  PARK, Soo-Gil

    IPC分类号： C22C38/38 ,  C22C38/20 ,  C22C38/02 ,  C22C38/06 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00

    摘要： The purpose of the present invention is to provide a steel material and a manufacturing method for the same, wherein the steel material has excellent strength, elongation, and impact toughness as well as excellent inside quality and wear resistance. According to the present invention, provided are a steel material having excellent wear resistance and a manufacturing method for the same, wherein the steel material contains, in weight, 0.55-1.4% carbon (C), 12-23% manganese (Mn), 5% or less (excluding 0%) chromium (Cr), 5% or less (excluding 0%) copper (Cu), 0.5% or less (excluding 0%) Al, 1.0% or less (excluding 0%) Si, 0.02% or less (including 0%) S, 0.04% or less (including 0%) phosphor (P), and the balance Fe and unavoidable impurities, and has a microstructure comprising, in area, 10% or less (including 0%) carbide and the balance austenite.

    AUSTENITE STEEL MATERIAL HAVING SUPERB SURFACE CHARACTERISTIC, AND METHOD FOR PRODUCING SAME
    10.
    发明公开
    AUSTENITE STEEL MATERIAL HAVING SUPERB SURFACE CHARACTERISTIC, AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：EP3561122A1

    公开(公告)日：2019-10-30

    申请号：EP17884959.2

    申请日：2017-12-21

    申请人： POSCO

    发明人： KIM, Yong-Jin ,  OH, Hong-Yeol ,  KANG, Sang-Deok ,  LEE, Un-Hae ,  HA, Yu-Mi

    IPC分类号： C22C38/38 ,  C22C38/20 ,  C22C38/02 ,  C22C38/06 ,  C22C38/00 ,  C21D8/02 ,  C21D9/46

    摘要： The present invention relates to abrasion-resistant austenite steel material having superb surface characteristic, and a method for producing the abrasion-resistant austenite steel material. Provided are austenite steel material having superb surface characteristic, and a method for producing same, the austenite steel material according to the present invention comprising, in weight %: 0.6-1.3% carbon (C); 14-22% manganese (Mn); 5% or lower (excluding 0%) copper (Cu); 5% or lower (excluding 0%) chromium (Cr); 1.0% or lower (excluding 0%) silicon (Si); 0.5% or lower (excluding 0%) aluminum (Al); 0.1% or lower (including 0%) phosphorous (P); 0.02% or lower (including 0%) sulfur (S); and remainder in iron (Fe) and other unavoidable impurities, and having the microstructure comprising, by surface area %, 5% or lower carbide and the rest in austenite structure, and surface flaw size of 0.3mm or lower.