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1. 发明授权

KR100847032B1 성형성이 우수한 무방향성 고탄소 강판 및 그 제조 방법 有权
标题翻译：一种等效高碳钢板，其制造方法及其制造方法
公开(公告)号：KR100847032B1
公开(公告)日：2008-07-17
申请号：KR1020060135081
申请日：2006-12-27
申请人： 주식회사 포스코
发明人： 신한철 , 박기철 , 김성진 , 이수희 , 정효태
IPC分类号： C22C38/00 , C21D8/12
摘要： 중량 %로 C: 0.2 ~ 0.5%, Mn: 0.1~1.2%, Si: 0.4%이하, Cr: 0.5%이하를 포함하고, 잔부 Fe 및 기타 불가피한 불순원소로 이루어지며, {111} 집합조직의 강도(f(g))가 8 이상이고, 집합조직의 소성이방성계수(r값)가 1.5 이상이며, 평면이방성계수(Δr)가 0.3 이하인 무방향성 고탄소 강판을 제공한다.
무방향성, 고탄소 강판, 집합조직, 소성 이방성 계수

2. 发明公开

KR1020080060619A 항복강도 및 냉간압연성이 우수한 고탄소 강판 및 그 제조방법 有权
标题翻译：高碳钢高强度及冷加工及其制造方法
公开(公告)号：KR1020080060619A
公开(公告)日：2008-07-02
申请号：KR1020060134943
申请日：2006-12-27
申请人： 주식회사 포스코
发明人： 신한철 , 박기철 , 이수희 , 김성진
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C22C38/34 , C21D8/0226 , C21D8/0236 , C21D2211/002 , C21D2211/009 , C22C38/001 , C22C38/04 , C22C38/26 , C22C38/28
摘要： A high carbon steel sheet having high yield strength and high rolling workability is provided to solve a problem that cracking or fracture is generated in the steel sheet due to its deficient rolling workability during the reduction of the steel sheet when using lower bainite or tempered martensite as a matrix structure, and a manufacturing method of the high carbon steel sheet is provided. A high carbon steel sheet comprises, by weight percent, 0.75 to 0.95% of carbon(C), 1.8% or less of silicon(Si), 0.1 to 1.5% of manganese(Mn), 0.1 to 1.0% of chromium(Cr), 0.02% or less of phosphorous(P), 0.02% or less of sulfur(S), and at least one element selected from the group consisting of 0.05 to 0.25% of V, 0.05 to 0.25% of Nb, 0.05 to 0.25% of Mo, 0.05 to 0.25% of Ti, 0.05 to 0.25% of W, 0.05 to 0.25% of Cu, and 30 to 120 ppm of N with the balance of Fe and other inevitable impurities. A microstructure of the steel sheet comprises fine pearlite having an interlayer distance of not more than 0.2 mum between lamellar cementities and upper bainite having a volume fraction of at least 90%. In the microstructure of the steel sheet, a sum of volume fractions of residual austenite and martensite is not more than 5%.
摘要翻译：提供高屈服强度和高轧制加工性的高碳钢板，以解决钢板中由于钢的还原期间的轧制加工性不足而产生裂纹或断裂的问题，当使用低贝氏体或回火马氏体时提供了高碳钢板的基体结构体和制造方法。高碳钢板以重量百分比计含有碳（C）的0.75〜0.95％，硅（Si）1.8％以下，锰（Mn）0.1〜1.5％，铬（Cr）0.1〜1.0％，0.02％以下的磷（P），0.02％以下的硫（S），以及选自0.05〜0.25％的V，0.05〜0.25％的Nb，0.05〜0.25％的Mo，0.05〜0.25％的Ti，0.05〜0.25％的W，0.05〜0.25％的Cu和30〜120ppm的N，剩余的Fe和其他不可避免的杂质。钢板的显微组织包括细小的珠光体，层间距离不大于0.2μm，层状胶结物和体积分数至少为90％的上贝氏体之间。在钢板的微观结构中，残余奥氏体和马氏体的体积分数之和不大于5％。

3. 发明公开

KR1020090070249A 황산 및 염산 내식성이 우수한 내황산 및 내염산 부식강과그 제조방법 有权
标题翻译：通过氢氯酸和硫酸对腐蚀具有优异的电阻的钢及其制造方法
公开(公告)号：KR1020090070249A
公开(公告)日：2009-07-01
申请号：KR1020070138183
申请日：2007-12-27
申请人： 주식회사 포스코
发明人： 정기조 , 이수희 , 김정철
IPC分类号： C22C38/00 , C22C38/04 , C21D8/02
CPC分类号： C22C38/60 , C21D8/0226 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/16
摘要： A sulfuric acid hydrochloric acid resistant corrosion steel and manufacturing method thereof are provided to manufacture the steel with a superior in sulfuric acid and hydrochloric acid resistant anticorrosion property at the low temperature - low sulphuric acid concentration section within the desulfurization equipment. A sulfuric acid hydrochloric acid resistant corrosion steel comprises followings. The sulfuric acid corrosion resistance and welding property are degraded, if C content exceeds 0.15 weight%. When P content exceeds 0.02 weight%, the intensity increase effect can be expected but sulfuric acid resistance and complex anticorrosion property are lowered. Al is added for the deoxidation in order to suppress the generation of the crack in the continuous casting process. When considering sulfuric acid resistance and complex part type property, Cu is the element which it certainly has to be added. Sb improves the corrosion resistance by forming the corrosion product on the steel surface.
摘要翻译：提供硫酸盐酸耐腐蚀钢及其制造方法，以在脱硫设备内的低温 - 低硫酸浓度段制造硫酸和盐酸耐腐蚀性优异的钢。硫酸盐酸耐腐蚀钢包括以下。如果C含量超过0.15重量％，则耐硫酸腐蚀性和焊接性能下降。当P含量超过0.02重量％时，可以预期强度增加效果，但耐硫酸性和复合防腐蚀性降低。为了抑制连铸过程中的裂纹的产生，添加了脱氧用的Al。当考虑耐硫酸性和复杂部件型性能时，Cu是必须添加的元素。 Sb通过在钢表面形成腐蚀产物来提高耐腐蚀性。

4. 发明公开

KR1020080046114A 황산 내식성이 우수한 내황산 부식강과 그 제조방법 有权
标题翻译：耐硫酸腐蚀性优良的钢及其制造方法
公开(公告)号：KR1020080046114A
公开(公告)日：2008-05-26
申请号：KR1020070118472
申请日：2007-11-20
申请人： 주식회사 포스코
发明人： 이수희 , 정기조 , 김교성 , 김재익 , 김성환
IPC分类号： C22C38/04 , C22C38/00 , C21D8/02
CPC分类号： C22C38/20 , C21D8/021 , C21D8/0226 , C21D9/085 , C21D9/46 , C21D2211/002 , C21D2211/005 , C22C38/26 , C22C38/30 , C22C38/38
摘要： A steel having more improved sulfuric acid corrosion resistance and excellent strength in the low temperature-low concentration section is provided, and a guaranteed high strength steel for high temperatures exhibiting excellent mechanical properties in a temperature range of a room temperature to not higher than 500 deg.C and a method for manufacturing the guaranteed high strength steel are provided. A sulfuric acid corrosion resistant steel excellent in sulfuric acid corrosion resistance comprises, by weight percent, 0.15% or less of C, 1.0% or less of Si, 2.0% or less of Mn, 0.03% or less of S, 0.02% or less of P, 0.01 to 0.1% of Al, 0.2 to 1.0% of Cu, 0.02 to 0.1% of Co, 0.1 to 1.0% of Cr, 0.1% or less of Ni, 0.02 to 0.1% of Nb, and the balance of Fe and other inevitable impurities. The Mn, Cr, Ni, and Nb as weight percentage satisfy the relation, (Mn+Cr+Nb)/Ni>=20. A method for manufacturing a sulfuric acid corrosion resistant steel excellent in sulfuric acid corrosion resistance comprises: hot rolling a steel comprising, by weight percent, 0.15% or less of C, 1.0% or less of Si, 2.0% or less of Mn, 0.03% or less of S, 0.02% or less of P, 0.01 to 0.1% of Al, 0.2 to 1.0% of Cu, 0.02 to 0.1% of Co, 0.1 to 1.0% of Cr, 0.1% or less of Ni, 0.02 to 0.1% of Nb, and the balance of Fe and other inevitable impurities; subjecting the hot rolled steel to accelerated cooling; coiling the accelerated cooled steel at a temperature of 500 to 660 deg.C to manufacture a sulfuric acid corrosion resistant steel with the low temperature structure.
摘要翻译：提供了具有更好的硫酸耐腐蚀性和在低温低浓度部分中具有优异强度的钢，并且在室温至不高于500度的温度范围内具有优异的机械性能的保证的高强度钢提供了一种用于制造保证的高强度钢的方法。硫酸耐腐蚀性优异的硫酸耐腐蚀钢包含C：0.15％以下，Si：1.0％以下，Mn：2.0％以下，S：0.03％以下，0.02％以下的P，0.01〜0.1％的Al，0.2〜1.0％的Cu，0.02〜0.1％的Co，0.1〜1.0％的Cr，0.1％以下的Ni，0.02〜0.1％的Nb，余量为Fe 和其他不可避免的杂质。 Mn，Cr，Ni和Nb的重量百分比满足关系式（Mn + Cr + Nb）/ Ni> = 20。一种耐硫酸耐腐蚀性优异的硫酸耐腐蚀性钢的制造方法，其特征在于，对所述钢进行热轧，所述钢包含C：0.15％以下，Si：1.0％以下，Mn：2.0％以下，0.03以下％以下的S，0.02％以下的P，0.01〜0.1％的Al，0.2〜1.0％的Cu，0.02〜0.1％的Co，0.1〜1.0％的Cr，0.1％以下的Ni，0.02〜 0.1％的Nb，余量为Fe等不可避免的杂质; 对热轧钢加热冷却; 在500〜660℃的温度下卷取加速冷却钢，制造低温结构的硫酸耐腐蚀钢。

5. 发明授权

KR100815799B1 내후성이 우수한 고항복비형 냉연강판 有权
标题翻译：高耐磨性和耐候性优异的冷轧钢板
公开(公告)号：KR100815799B1
公开(公告)日：2008-03-20
申请号：KR1020060126488
申请日：2006-12-12
申请人： 주식회사 포스코
发明人： 김재익 , 정기조 , 김종화 , 이수희
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/48 , C22C38/52 , C22C38/54 , C21D8/0226 , C21D8/0236
摘要： A high yield ratio type cold-rolled steel sheet with excellent weather resistance and a manufacturing method thereof are provided to secure a cold-rolled steel sheet having excellent weather resistance and formability while maintaining a high strength of at least 80 kg/cm^2 and a high yield ratio. A high yield ratio type weather resistant cold-rolled steel sheet has a composition comprising, by weight percent, 0.08 to 0.20% of carbon(C), 0.1 to 0.5% of silicon(Si), 0.9 to 2.0% of manganese(Mn), 0.02% or less of phosphorous(P), 0.01% or less of sulfur(S), 0.02 to 0.07% of aluminum(Al), 0.03 to 0.06% of niobium(Nb), 0.05 to 0.30% of nickel(Ni), 0.2 to 0.5% of copper(Cu), 0.3 to 0.6% of chromium(Cr), 0.001 to 0.004% of boron(B), and 0.02 to 0.08% of cobalt(Co) with the balance of Fe and other inevitable impurities. The cold-rolled steel sheet has a tensile strength of 80 kg/mm^2 or more.
摘要翻译：提供耐候性优异的高屈服比型冷轧钢板及其制造方法，以确保耐候性和成形性优异的冷轧钢板，同时保持至少80kg / cm 2的高强度，高产率。高产率型耐候冷轧钢板具有以碳（C）0.08〜0.20％，硅（Si）0.1〜0.5％，锰（Mn）为0.9〜2.0％的重量％，磷（P）0.02％以下，硫（S）0.01％以下，铝（Al）0.02〜0.07％，铌（Nb）0.03〜0.06％，镍（Ni）0.05〜0.30％，铜（Cu）0.2〜0.5％，铬（Cr）0.3〜0.6％，硼（B）0.001〜0.004％，钴（Co）0.02〜0.08％，余量为Fe等不可避免的杂质。冷轧钢板的拉伸强度为80kg / mm ^ 2以上。

6. 发明授权

KR100928774B1 황산 및 염산 내식성이 우수한 내황산 및 내염산 부식강과그 제조방법 有权
标题翻译：我的最爱我的最爱
公开(公告)号：KR100928774B1
公开(公告)日：2009-11-25
申请号：KR1020070138183
申请日：2007-12-27
申请人： 주식회사 포스코
发明人： 정기조 , 이수희 , 김정철
IPC分类号： C22C38/00 , C22C38/04 , C21D8/02
摘要： A sulfuric acid hydrochloric acid resistant corrosion steel and manufacturing method thereof are provided to manufacture the steel with a superior in sulfuric acid and hydrochloric acid resistant anticorrosion property at the low temperature - low sulphuric acid concentration section within the desulfurization equipment. A sulfuric acid hydrochloric acid resistant corrosion steel comprises followings. The sulfuric acid corrosion resistance and welding property are degraded, if C content exceeds 0.15 weight%. When P content exceeds 0.02 weight%, the intensity increase effect can be expected but sulfuric acid resistance and complex anticorrosion property are lowered. Al is added for the deoxidation in order to suppress the generation of the crack in the continuous casting process. When considering sulfuric acid resistance and complex part type property, Cu is the element which it certainly has to be added. Sb improves the corrosion resistance by forming the corrosion product on the steel surface.
摘要翻译：本发明提供一种耐硫酸盐腐蚀钢及其制造方法，用于制造脱硫设备内的低温 - 低硫酸浓缩部的硫酸耐盐酸耐蚀性优异的钢。一种硫酸耐盐酸腐蚀钢，具体包括：如果C含量超过0.15重量％，则耐硫酸腐蚀性和焊接性降低。当P含量超过0.02重量％时，可以预期强度增加效果，但是耐硫酸性和复合抗腐蚀性降低。为了抑制连续铸造过程中裂纹的产生，添加Al进行脱氧。在考虑耐硫酸性和复合型部件性能时，Cu是必须添加的元素。 Sb通过在钢表面形成腐蚀产物来提高耐腐蚀性。

7. 发明授权

KR100847045B1 항복강도 및 냉간압연성이 우수한 고탄소 강판 및 그 제조방법 有权
标题翻译：高碳钢高强度及冷加工及其制造方法
公开(公告)号：KR100847045B1
公开(公告)日：2008-07-17
申请号：KR1020060134943
申请日：2006-12-27
申请人： 주식회사 포스코
发明人： 신한철 , 박기철 , 이수희 , 김성진
IPC分类号： C22C38/00 , C21D8/02
摘要： 중량%로 탄소(C): 0.75∼0.95%, 규소(Si): 1.8% 이하, 망간(Mn): 0.1~1.5%, 크롬(Cr): 0.1∼1.0%, 인(P): 0.02% 이하, 및 황(S): 0.02% 이하를 포함하고, 잔부 Fe 및 기타 불가피한 불순물로 이루어진 고탄소 강판을 제공한다.
고탄소 강판, 스프링용 강판, 항복강도, 냉간압연성

8. 发明授权

KR100840287B1 잔류 오스테나이트와 ＨＣＰ 마르텐사이트 조직이 혼합된복합조직강 및 그의 열처리 방법 有权
标题翻译：保留奥斯汀和HCP马氏体的复合钢及其热处理方法
公开(公告)号：KR100840287B1
公开(公告)日：2008-06-20
申请号：KR1020060133661
申请日：2006-12-26
申请人： 주식회사 포스코
发明人： 신한철 , 김성진 , 이수희 , 박기철
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C22C38/04 , C21D8/0226 , C21D2211/001 , C21D2211/008
摘要： A composite steel of residual austenite and hexagonal close packed martensite and a method for treating the same with heat are provided to improve toughness and strength by lowering transformation temperature of martensite while restraining components other than manganese. A composite steel of residual austenite and hexagonal close packed martensite comprises less than 0.5 weight percent of C, not less than 15 and not more than 35 weight percent of Mn, equal to or less than 3 weight percent of at least one Co, Ti, Al and W, equal to or less than 10 of at least one of Cr, Cu, Mo, Ni, Nb Si and V, balance of Fe, and unavoidable impurities. The contents of components in the alloy satisfy an MS equation described below. The value of MS equation is 50 to 120. MS=260-330C+2Al+7Co-14Cr-13Cu-19(Mn-15)-5Mo-4Nb-13Ni-7Si+3Ti-4V.
摘要翻译：提供残余奥氏体和六方密堆积马氏体的复合钢及其热处理方法，通过降低马氏体的相变温度，同时抑制锰以外的成分，来提高韧性和强度。残余奥氏体和六方密堆积马氏体的复合钢包含小于0.5重量％的C，不小于15重量％且不大于35重量％的Mn，等于或小于3重量％的至少一种Co，Ti， Al，W等于或少于Cr，Cu，Mo，Ni，NbSi和V中的至少一种，余量为Fe和不可避免的杂质。合金中组分的含量满足下述MS方程式。 MS方程的值为50至120.MS = 260-330℃+ 2Al + 7Co-14Cr-13Cu-19（Mn-15）-5Mo-4Nb-13Ni-7Si + 3Ti-4V。

9. 发明授权

KR100946148B1 황산 내식성이 우수한 내황산 부식강과 그 제조방법 有权
标题翻译：耐硫酸腐蚀性优良的钢及其制造方法
公开(公告)号：KR100946148B1
公开(公告)日：2010-03-10
申请号：KR1020070118472
申请日：2007-11-20
申请人： 주식회사 포스코
发明人： 이수희 , 정기조 , 김교성 , 김재익 , 김성환
IPC分类号： C22C38/04 , C22C38/00 , C21D8/02
CPC分类号： C22C38/20 , C21D8/021 , C21D8/0226 , C21D9/085 , C21D9/46 , C21D2211/002 , C21D2211/005 , C22C38/26 , C22C38/30
摘要： 황산 응축에 의한 부식특성이 뛰어난 강과 그 제조방법이 제공된다.
내황산 부식강은, 중량%로, C: 0.15%이하(0%는 제외), Si: 1.0%이하(0%는 제외), Mn: 2.0%이하(0%는 제외), S: 0.03%이하, P: 0.02%이하, Al: 0.01~0.1%, Cu: 0.2~1.0%, Co: 0.02~0.1%, Cr: 0.1~1.0%, Ni: 0.1%이하(0%는 제외), Nb: 0.02~0.1%, 나머지 Fe와 기타 불가피한 불순물로 조성된다. 이 강은 폴리고날 페라이트의 조직을 갖을 수 있으며, 또는 엑시쿨러 페라이트(accicular ferrite), 베이니틱 페라이트(bainitic ferrite), 베이나이트(bainite)의 저온조직에서 선택되는 적어도 1종이 포함될 수 있다. 저온조직이 포함되는 경우에 상온에서부터 500℃까지의 다양한 온도영역에서 우수한 기계적 성질을 발휘한다.
내황산부식강, 저온조직, 고온강도

10. 发明公开

KR1020070067887A 섀도우 마스크용 강판 및 그 제조 방법 无效
标题翻译：用于阴影掩模的钢板及其制造方法
公开(公告)号：KR1020070067887A
公开(公告)日：2007-06-29
申请号：KR1020050129342
申请日：2005-12-26
申请人： 주식회사 포스코
发明人： 이수희 , 김교성 , 이규영
IPC分类号： H01J29/07
CPC分类号： H01J29/07 , H01J9/142 , H01J2229/0733
摘要： A steel sheet for a shadow mask and a fabrication method of the same are provided to eliminate a decarburization process by removing doped carbon in an annealing process. A steel sheet for a shadow mask includes C of 0.004 weight percent and below, Mn of 0.03 to 0.35 weight percent, Al of 0.001 to 0.1 weight percent, N of 0.004 weight percent and below, S of 0.012 weight percent and below, Ti of [N(weight percent)x(48/14)+C(weight percent)x(48/12)] to 0.08 weight percent, F of the remaining weight percent, and necessary impurities. The steel sheet includes a micro-structure which is formed only with a cold rolled high strength structure.
摘要翻译：提供一种用于荫罩的钢板及其制造方法，以通过在退火工艺中除去掺杂碳来消除脱碳过程。荫罩用钢板包括0.004重量％以下的C，0.03〜0.35重量％的Mn，0.001〜0.1重量％的Al，0.004重量％以下的N，0.012重量％以下的S，0.012重量％以下的S [N（重量％）x（48/14）+ C（重量百分数）×（48/12）]至0.08重量％，剩余重量百分数F和必需杂质。钢板包括仅由冷轧高强度结构形成的微结构。

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