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1. 发明公开

EP2799581A1 WEAR RESISTANT AUSTENITIC STEEL HAVING SUPERIOR MACHINABILITY AND TOUGHNESS IN WELD HEAT AFFECTED ZONES THEREOF AND METHOD FOR PRODUCING SAME 有权转让
标题翻译：穿韧性和机械加工焊接热影响地区的奥氏体不锈钢出色，方法及其生产
公开(公告)号：EP2799581A1
公开(公告)日：2014-11-05
申请号：EP12862011.9
申请日：2012-12-27
申请人： Posco
发明人： LEE, Soon-Gi , CHOI, Jong-Kyo , NOH, Hee-Goon , LEE, Hong-Ju , SUH, In-Shik , PARK, In-Gyu
IPC分类号： C22C38/04 , C21D8/00 , C21D9/46 , C22C38/38
摘要： Provided are a wear resistant austenitic steel having superior machinability and toughness in weld heat affected zones thereof and a method for producing same, the austenitic steel comprising, in weight %, 15 to 25% of manganese (Mn), 0.8 to 1.8% of carbon(C), copper (Cu) that satisfies 0.7C-0.56 (%) ≤ Cu ≤ 5%, the remainder being Fe and other inevitable impurities, the Charpy impact value of the weld heat affected zones at -40 °C being 100J or higher. According to the present invention, austenitic steel having superior machinability is provided in which carbide generation after welding in the weld heat affected zones is inhibited in order to prevent the toughness of the weld heat affected zones from being degraded, and corrosion resistance is improved to enable the steel to be used over a long period of time in a corrosive environment.

2. 发明授权

EP2799582B1 WEAR RESISTANT AUSTENITIC STEEL HAVING SUPERIOR DUCTILITY AND METHOD FOR PRODUCING SAME 有权转让
公开(公告)号：EP2799582B1
公开(公告)日：2019-06-19
申请号：EP12862562.1
申请日：2012-12-27
申请人： POSCO
发明人： LEE, Soon-Gi , CHOI, Jong-Kyo , NOH, Hee-Goon , CHO, Hyun-Kwan , SUH, In-Shik , LEE, Hak-Cheol , PARK, In-Gyu , LEE, Hong-Ju
IPC分类号： C22C38/00 , C22C38/04 , C22C38/16 , C22C38/60 , C22C38/20 , C22C38/38 , C21D6/00 , C21D8/02 , C21D9/46

3. 发明授权

EP2940171B1 HIGH-MANGANESE WEAR RESISTANT STEEL HAVING EXCELLENT WELDABILITY AND METHOD FOR MANUFACTURING SAME 有权转让
公开(公告)号：EP2940171B1
公开(公告)日：2017-07-26
申请号：EP12891083.3
申请日：2012-12-28
申请人： POSCO
发明人： LEE, Soon-Gi , SUH, In-Shik , PARK, In-Gyu , LEE, Hong-Ju
IPC分类号： C21D6/00 , C21D8/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
CPC分类号： C22C38/12 , C21D6/005 , C21D6/008 , C21D8/005 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/14
摘要： The present invention relates to a steel which can be applied to heavy construction equipment, dump trucks, mining machinery, conveyors and the like and, more specifically, to high-manganese wear resistant steel having excellent weldability.

4. 发明公开

EP2799582A1 WEAR RESISTANT AUSTENITIC STEEL HAVING SUPERIOR MACHINABILITY AND DUCTILITY METHOD FOR PRODUCING SAME 有权转让
标题翻译：具有优异的可加工性和延展性，AND PROCESS WEAR-奥氏体钢FOR PRODUCING
公开(公告)号：EP2799582A1
公开(公告)日：2014-11-05
申请号：EP12862562.1
申请日：2012-12-27
申请人： Posco
发明人： LEE, Soon-Gi , CHOI, Jong-Kyo , NOH, Hee-Goon , CHO, Hyun-Kwan , SUH, In-Shik , LEE, Hak-Cheol , PARK, In-Gyu , LEE, Hong-Ju
IPC分类号： C22C38/04 , C22C38/38 , C21D8/02 , C21D9/46
CPC分类号： C22C38/60 , B21B1/026 , C21D6/005 , C21D8/0263 , C21D9/46 , C22C38/00 , C22C38/002 , C22C38/04 , C22C38/16 , C22C38/20 , C22C38/36 , C22C38/38
摘要： Provided are a wear resistant austenitic steel having superior machinability and ductility and a method for producing same, the austenitic steel comprising, in weight %, 8 to 15% of manganese (Mn), carbon (C) that satisfies the relationship of 23%
摘要翻译：本发明提供具有优异的机械加工性和延展性及其制造方法的耐磨奥氏体钢，奥氏体钢，其包括，以重量％计，8-15％的锰（Mn），碳（C）那样SATIS外资企业23％的关系< 33.5C-Mn系‰¤37％，铜（Cu）做SATIS外资企业1.6C-1.4（％）‰¤‰¤5％的Cu; 0.03至0.1％的硫（S），0.001〜0.01％，以钙（Ca），其余为Fe和其他不可避免的杂质。。根据本发明，提供了一种具有优异的机械加工奥氏体钢，其中在钢中碳化物的生成被抑制，以防止钢的降解，和耐腐蚀性能充分确保，以使钢具有长的服务使用生活在腐蚀性环境。

5. 发明公开

EP4026928A1 STEEL PLATE HAVING EXCELLENT STRENGTH AND LOW-TEMPERATURE IMPACT TOUGHNESS AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：EP4026928A1
公开(公告)日：2022-07-13
申请号：EP20861202.8
申请日：2020-08-28
申请人： POSCO
发明人： CHAE, Jae-Yong , LEE, Hong-Ju
IPC分类号： C22C38/30 , C22C38/06 , C21D1/63
摘要： The present invention is to provide a steel plate with physical properties superior to existing steel plates used in fields such as industrial machinery, especially excellent low-temperature impact toughness along with high strength and high hardness, and a method for manufacturing same.

6. 发明授权

EP2940173B1 HIGH STRENGTH AUSTENITIC-BASED STEEL WITH REMARKABLE TOUGHNESS OF WELDING HEAT-AFFECTED ZONE AND PREPARATION METHOD THEREFOR 有权转让
公开(公告)号：EP2940173B1
公开(公告)日：2019-11-06
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： C22C38/38 , C22C38/20 , C22C38/22 , C22C38/32 , C22C38/28 , C22C38/00 , C21D8/00 , C21D6/00 , C21D8/02 , C21D8/04

7. 发明授权

EP2799583B1 ABRASION RESISTANT STEEL WITH EXCELLENT TOUGHNESS AND WELDABILITY 有权转让
公开(公告)号：EP2799583B1
公开(公告)日：2018-06-20
申请号：EP12863578.6
申请日：2012-12-27
申请人： Posco
发明人： CHOI, Jong-Kyo , JANG, Woo-Kil , PARK, Young-Hwan , LEE, Hong-Ju
IPC分类号： C22C38/04 , C22C38/12 , C22C38/14 , C21D8/02 , C22C38/02 , C22C38/44 , C22C38/48 , C22C38/54 , C22C38/50 , C21D6/00
CPC分类号： C22C38/54 , C21D6/005 , C21D8/0226 , C21D2211/002 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14 , C22C38/44 , C22C38/48 , C22C38/50
摘要： The present invention relates to an abrasion resistant steel comprising 2.6-4.5 wt% of manganese (Mn), 0.05-1.0 wt% of silicon (Si), carbon (C) in an amount satisfying (6-Mn)/50 # C # (10-Mn)/50 by weight, and the balance of iron (Fe) and other inevitable impurities, wherein the Brinell hardness on a surface layer thereof is a value of 360-440. In addition, the present invention relates to an abrasion resistant steel further comprising one or more components selected from the group consisting of 0.1 wt% or less of niobium (Nb) (not including 0 wt%), 0.1 wt% or less of vanadium (V) (not including 0 wt%), 0.1 wt% or less of titanium (Ti) (not including 0 wt%), and 0.02 wt% or less of boron (B) (not including 0 wt%) to complement the performance thereof. Further, the present invention relates to an abrasion resistant steel, wherein the microstructure comprises 90 % or more of martensite, and the average packet size of martensite is 20 µm or less.

8. 发明公开

EP2799583A1 ABRASION RESISTANT STEEL WITH EXCELLENT TOUGHNESS AND WELDABILITY 有权转让
标题翻译： ABRIEBFESTER STAHL MIT HERVORRAGENDER FESTIGKEIT UND SCHWEISSBARKEIT
公开(公告)号：EP2799583A1
公开(公告)日：2014-11-05
申请号：EP12863578.6
申请日：2012-12-27
申请人： Posco
发明人： CHOI, Jong-Kyo , JANG, Woo-Kil , PARK, Young-Hwan , LEE, Hong-Ju
IPC分类号： C22C38/04 , C22C38/12 , C22C38/14
CPC分类号： C22C38/54 , C21D6/005 , C21D8/0226 , C21D2211/002 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14 , C22C38/44 , C22C38/48 , C22C38/50
摘要： The present invention relates to an abrasion resistant steel comprising 2.6-4.5 wt% of manganese (Mn), 0.05-1.0 wt% of silicon (Si), carbon (C) in an amount satisfying (6-Mn)/50 # C # (10-Mn)/50 by weight, and the balance of iron (Fe) and other inevitable impurities, wherein the Brinell hardness on a surface layer thereof is a value of 360-440. In addition, the present invention relates to an abrasion resistant steel further comprising one or more components selected from the group consisting of 0.1 wt% or less of niobium (Nb) (not including 0 wt%), 0.1 wt% or less of vanadium (V) (not including 0 wt%), 0.1 wt% or less of titanium (Ti) (not including 0 wt%), and 0.02 wt% or less of boron (B) (not including 0 wt%) to complement the performance thereof. Further, the present invention relates to an abrasion resistant steel, wherein the microstructure comprises 90 % or more of martensite, and the average packet size of martensite is 20 µm or less.
摘要翻译：本发明涉及包含2.6-4.5重量％的锰（Mn），0.05-1.0重量％的硅（Si），碳（C），其量满足（6-Mn）/ 50＃C＃（10-Mn）/ 50，余量为铁（Fe）等不可避免的杂质，其表面层上的布氏硬度为360〜4040。另外，本发明还涉及一种耐磨钢，其还含有选自0.1重量％以下的铌（Nb）（不含0重量％），0.1重量％以下的钒（以上）的一种以上的成分 V）（不包括0重量％），0.1重量％以下的钛（Ti）（不含0重量％）和0.02重量％以下的硼（B）（不含0重量％），以补充性能它们。此外，本发明涉及一种耐磨钢，其中微结构包含90％以上的马氏体，马氏体的平均包装尺寸为20μm以下。

9. 发明公开

EP2799571A1 AUSTENITIC STEEL HAVING SUPERIOR MACHINABILITY AND CRYOGENIC TEMPERATURE TOUGHNESS IN WELD HEAT AFFECTED ZONES THEREOF AND METHOD FOR MANUFACTURING SAME 有权转让
标题翻译：随着焊接热影响区域，以用于生产杰出切削加工性和低温韧性和工艺奥氏体钢
公开(公告)号：EP2799571A1
公开(公告)日：2014-11-05
申请号：EP12862659.5
申请日：2012-12-27
申请人： Posco
发明人： LEE, Soon-Gi , CHOI, Jong-Kyo , PARK, Young-Hwan , NOH, Hee-Goon , CHO, Hyun-Kwan , SUH, In-Shik , PARK, In-Gyu , LEE, Hong-Ju
IPC分类号： C22C38/00 , C22C38/38 , B23K31/02 , C21D9/50
CPC分类号： C21D9/505 , B23K31/02 , B23K35/3073 , B23K2201/00 , C21D6/005 , C21D9/46 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/20 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/38 , C22C38/60
摘要： Provided are austenitic steel having superior machinability and cryogenic temperature toughness in weld heat affected zones thereof and a method for manufacturing the same, the austenitic steel comprising, in weight %, 15 to 35% of manganese (Mn), carbon(C) that satisfies 23.6C+Mn ≥ 28 and 33.5C-Mn ≤ 23, 5% or lower (but not 0%) of copper (Cu), chrome (Cr) that satisfies 28.5C+4.4Cr ≤ 57 (but not 0%), the remainder being Fe and other inevitable impurities, the Charpy impact value of the weld heat affected zones at -196°C being 41J or higher. According to the present invention, austenitic steel having superior machinability and cryogenic temperature toughness in weld heat affected zones thereof is provided in which the cryogenic steel is obtained in an inexpensive manner, a stable austenite phase can be formed at a low temperature and the generation of carbide can be effectively inhibited.
摘要翻译：本发明提供具有优异的机械加工性和在其焊接热影响区的低温韧性和用于制造其的方法奥氏体钢，奥氏体钢，其包括，以重量％计，15至35％的锰（Mn），碳（C）那样SATIS外资企业 23.6C +锰‰¥28和33.5C-Mn系‰¤23，铜的5％或更低（但不为0％）（铜），铬（Cr）的确实SATIS外资企业28.5C + 4.4Cr‰¤57（但不为0 ％），其余为Fe和其它不可避免的杂质，在196℃时的焊接热影响区为41J或更高的却贝冲击值。。根据本发明，具有在其被提供焊接热影响区，其中所述低温钢在廉价的方式获得优异的机械加工性和低温韧性的奥氏体钢，具有稳定奥氏体相可以在低温下形成，并且产生的碳化物可以有效地抑制。

10. 发明公开

EP3872219A1 HIGH-STRENGTH STEEL HAVING EXCELLENT RESISTANCE TO SULFIDE STRESS CRACKING, AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：EP3872219A1
公开(公告)日：2021-09-01
申请号：EP19875085.3
申请日：2019-10-25
申请人： POSCO
发明人： KOH, Seong-Ung , PARK, Yoen-Jung , LEE, Hong-Ju , KIM, Hyo-Shin , BAE, Moo-Jong
IPC分类号： C22C38/58 , C22C38/48 , C22C38/50 , C22C38/44 , C22C38/46 , C22C38/04 , C22C38/02 , C22C38/06 , C22C38/00 , C21D8/02
摘要： The present invention relates to a thick steel suitable for use as a line pipe, a sour-resistant material, or the like and, more specifically, to a high-strength steel having excellent resistance to sulfide stress cracking, and a method for manufacturing same.

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