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31. 发明公开

KR1020130120345A 강판 제조 방법 有权
标题翻译：钢板和制造热轧钢板的方法
公开(公告)号：KR1020130120345A
公开(公告)日：2013-11-04
申请号：KR1020120043523
申请日：2012-04-25
申请人： 현대제철 주식회사
发明人： 정준호 , 박영국 , 김민수 , 임갑수 , 장진영 , 천부현
IPC分类号： C21D8/02 , C22C38/00 , C21D9/46 , C22C38/18
CPC分类号： C21D8/0226 , C21D8/0263 , C21D8/0273 , C21D2211/003 , C21D2211/009 , C22C38/02 , C22C38/04 , C22C38/18
摘要： Disclosed is a steel sheet which has excellent wear resistance by raising the hardness of the steel sheet and that is manufactured by spheroidizing heat-treatment, and a steel sheet manufacturing method. The steel sheet manufacturing method according to the present invention comprises: (a) a step for reheating a slab sheet material at 1150-1250; (b) a step for finishing-hot-rolling the reheated sheet material at 840-880; (c) a step for winding the hot-rolled sheet material at 600-660 after cooling the hot-rolled sheet material; and (d) a step for spheroidizing-heat-treating the wound sheet material at 680-720; wherein the slab sheet material is composed of, in wt%: C: 0.8-1.2; Si: 0.15-0.30; Mn: 0.6-1.0; C: 0.2-2.0; P: 0.03 or less; S: 0.005 or less; and the remainder Fe and other inevitable impurities. [Reference numerals] (AA) Start;(BB) End;(S110) Slab reheating (SRT: 1150-1250);(S120) Hot rolling (FDT: 840-880);(S130) Cooling/Winding (CT: 600-660);(S140) Spheroidizing annealing (680-720)
摘要翻译：公开了通过提高钢板的硬度并且通过球化热处理制造的耐磨性优异的钢板，以及钢板的制造方法。根据本发明的钢板制造方法包括：（a）在1150-1250再加热板坯材料的步骤; （b）在840-880℃下对再热片材进行精加工热轧的工序; （c）在冷轧热轧板材之后，以600-660卷绕热轧板材的工序; 和（d）在680-720的球状球体热处理的步骤; 其中所述板坯材料以重量％：C：0.8-1.2; Si：0.15-0.30; Mn：0.6〜1.0; C：0.2-2.0; P：0.03以下 S：0.005以下余量为Fe等不可避免的杂质。（标号）（AA）开始;（BB）端;（S110）板坯再加热（SRT：1150-1250）;（S120）热轧（FDT：840-880）;（S130）冷却/绕组 -660）;（S140）球化退火（680-720）

32. 发明公开

KR1020130120342A 열연강판 표면의 적스케일 저감 방법 및 이를 이용한 열연강판 제조 방법 无效
标题翻译：减少热轧钢板表面红色比例的方法及使用其制造热轧钢板的方法
公开(公告)号：KR1020130120342A
公开(公告)日：2013-11-04
申请号：KR1020120043520
申请日：2012-04-25
申请人： 현대제철 주식회사
发明人： 정준호 , 이관영 , 김민수 , 박영국 , 임갑수 , 장진영
IPC分类号： B21B1/26 , C21D8/02 , C22C38/00
CPC分类号： B21B1/26 , C21D8/0226 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
摘要： A method for reducing red scale on the surface of a hot-rolled steel sheet and a method for manufacturing a hot-rolled steel sheet using the same are disclosed. A method for reducing red scale on the surface of a hot-rolled steel sheet according to the present invention re-heats a slab which contains 0.1 weight% or more of silicone (Si) based on the total weight at 1170 or lower temperatures and subsequently hot-rolls the slab. [Reference numerals] (AA) Start;(BB) End;(S110) Reheat a slab;(S120) Hot-roll (FDT: 850~900);(S130) Cool and wind (CT: 600~680)
摘要翻译：公开了一种减少热轧钢板表面的红色刻度的方法和使用该方法的热轧钢板的制造方法。根据本发明的用于减少热轧钢板表面上的红色刻度的方法将基于总重量在1170或更低温度下含有0.1重量％或更多的硅氧烷（Si）的板坯再加热，随后热轧板坯。（标号）（AA）开始;（BB）结束;（S110）对板坯再加热;（S120）热轧（FDT：850〜900）;（S130）冷却风（CT：600〜680）

33. 发明公开

KR1020130110644A 중탄소 열연강판 및 그 제조 방법 无效
标题翻译：带中碳的热轧钢板及其制造方法
公开(公告)号：KR1020130110644A
公开(公告)日：2013-10-10
申请号：KR1020120032758
申请日：2012-03-29
申请人： 현대제철 주식회사
发明人： 정준호 , 박영국 , 이승하 , 장진영
IPC分类号： C21D8/02 , C22C38/00 , C21D9/46 , C22C38/04
CPC分类号： C21D8/0226 , C21D1/18 , C21D8/0263 , C21D2211/005 , C21D2211/009 , C22C38/02 , C22C38/04
摘要： PURPOSE: A medium carbon hot-rolled steel sheet and a manufacturing method thereof are provided to allow the same to have hardenability proper to a hollow material and fine grains through alloy elements and process controls. CONSTITUTION: A manufacturing method of a medium carbon hot-rolled steel sheet includes: a hot-rolling a slab sheet material at a finish rolling temperature of 850 to 900°C; and a step of cooling the hot-rolled sheet material, and then coiling the sheet material at a temperature of 600 to 680°C. Before the step of hot-rolling the sheet material, the sheet material is reheated at a temperature of 1150 to 1250°C for one to three hours. The sheet material comprises 0.22 to 0.27 wt% of C, 0.15 to 0.25 wt% of Si, 1.6 to 2.0 wt% of Mn, below 0.03 wt% of P, below 0.01 wt% of S, 0.001 to 0.0025 wt% of B, and remnants Fe and inevitable impurities.
摘要翻译：目的：提供一种中碳热轧钢板及其制造方法，使其能够通过合金元素和工艺控制使其具有适合中空材料的淬透性和细晶粒。构成：中碳热轧钢板的制造方法包括：在850〜900℃的终轧温度下热轧板坯材料; 以及冷却热轧板材的步骤，然后在600〜680℃的温度下卷取片材。在热轧片材的步骤之前，片材在1150〜1250℃的温度下再加热1〜3小时。片材为C：0.22〜0.27重量％，Si：0.15〜0.25重量％，Mn：1.6〜2.0重量％，P：0.03重量％以下，S：0.01重量％以下，B：0.001〜0.0025重量％并残留Fe和不可避免的杂质。

34. 发明授权

KR101290485B1 비조질 열연 고탄소강 제조방법 有权
标题翻译：高碳非热处理钢的制造方法
公开(公告)号：KR101290485B1
公开(公告)日：2013-07-26
申请号：KR1020110063272
申请日：2011-06-28
申请人： 현대제철 주식회사
发明人： 정준호 , 장진영 , 김성주
IPC分类号： C21D8/00 , C22C38/00 , C21D9/46 , B21B3/00
摘要： 탄소(C) 0.45 중량% 이상을 포함하는 고탄소강 제조방법에 관한 것으로, 보다 상세하게는 페라이트 분율을 향상시켜 미세한 펄라이트-페라이트 조직을 갖는 고탄소강 제조방법에 관하여 개시한다.
본 발명은 탄소(C) : 0.43 ~ 0.47 중량%, 실리콘(Si) : 0.15 ~ 0.35 중량%, 망간(Mn) : 1.10 ~ 1.30 중량%, 인(P) : 0.03 중량% 이하, 황(S) : 0.04 중량% 이하, 알루미늄(Al) : 0.02 중량% 이하, 니켈(Ni) : 0.2 중량% 이하, 크롬(Cr) : 0.10 ~ 0.20 중량%, 몰리브덴(Mo) : 0.05 중량% 이하, 바나듐(V) : 0.08~0.15 중량%, 구리(Cu) 0.3 중량% 이하 를 포함하며, 나머지 철(Fe)과 불가피한 불순물로 이루어지는 슬라브 강재를, 1000~1200℃ 영역에서 고온 압축 변형한 후, 850~950℃ 영역까지 급속 냉각 한 후, 850~950℃ 영역에서 저온 압축 변형하는 비조질 열연 고탄소강 제조방법을 제공한다.

35. 发明授权

KR101277886B1 인장강도 1ＧＰａ급 고장력강 및 상기 고장력강의 연화부 감소를 위한 용접 방법 失效
标题翻译： 1GPa钢筋钢筋和钢筋焊接方法
公开(公告)号：KR101277886B1
公开(公告)日：2013-06-21
申请号：KR1020110063267
申请日：2011-06-28
申请人： 현대제철 주식회사
发明人： 장진영 , 정준호 , 김성주
IPC分类号： C22C38/00 , C22C38/38 , B23K26/242
摘要： 본 발명의 일 실시예에 따른 인장강도 1GPa급 고장력강은 중량%로, 탄소(C): 0.07 ~ 0.13%, 망간(Mn): 1.4 ~ 1.9%, 인(P): 0.014% ~ 0.01, 황(S): 0.004 ~ 0.006%, 규소(Si): 0.03 ~ 0.1%, 알루미늄(Al): 0.04 ~ 0.06%, 세륨(Ce): 0.27 ~ 0.47%를 포함하고, 나머지 철(Fe) 및 기타 불가피한 불순물로 이루어진다.

36. 发明公开

KR1020130046936A 원전용 강관 제조 방법 有权
标题翻译：热轧钢板，制造热轧钢板的方法和使用热轧钢板制造油管国家产品的方法
公开(公告)号：KR1020130046936A
公开(公告)日：2013-05-08
申请号：KR1020110111617
申请日：2011-10-28
申请人： 현대제철 주식회사
发明人： 정준호 , 장진영 , 김성주
IPC分类号： C21D8/02 , C22C38/00 , C22C38/40 , C21D9/46
CPC分类号： C21D8/0226 , C21D1/28 , C21D8/0263 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/42
摘要： PURPOSE: A hot-rolled steel plate, a manufacturing method thereof, and a steel pipe manufacturing method using the same are provided to manufacture a hot-rolled steel plate which excellently prevents particle cracks and crack damages by controlling the alloy components and processing conditions. CONSTITUTION: A method for manufacturing a hot-rolled steel comprises: a slab reheating step(S110) for reheating a slab steel plate comprising 0.17-0.23 wt% of C, 0.25-0.35 wt% of Si, 0.5-0.7 wt% of Mn, 0.008 wt% or less of P, 0.025 wt% or less of S, 0.4-0.5 wt% of Cr, 0.015-0.025 wt% of Ni, 0.002-0.015 wt% of Cu, and the rest of Fe and unavoidable impurities; a hot-rolling step(S120) for hot-rolling the reheated slab steel plate at an FDT(Finishing Delivery Temperature) of 800- 850°C; and a cooling/coiling step(S130) for coiling the hot-rolled slab steel plate after cooling the same at a CT(Coiling Temperature) of 550-650°C. [Reference numerals] (AA) Start; (BB) End; (S110) Slab reheating(SRT: 1150-1250°C); (S120) Hot-rolling(FDT: 800-850°C); (S130) Cooling/coiling(CT: 520-600°C)
摘要翻译：目的：提供一种热轧钢板及其制造方法和使用该热轧钢板的钢管制造方法，以制造通过控制合金成分和加工条件优异地防止颗粒裂纹和裂纹损伤的热轧钢板。构成：热轧钢的制造方法包括：对钢坯进行再加热的板坯再加热工序（S110），其包含0.17〜0.23重量％的C，0.25〜0.35重量％的Si，0.5〜0.7重量％的Mn ，0.008重量％以下的P，0.025重量％以下的S，0.4〜0.5重量％的Cr，0.015〜0.025重量％的Ni，0.002〜0.015重量％的Cu，余量的Fe和不可避免的杂质; 热轧步骤（S120），用于在800-850℃的FDT（整理输送温度）下热轧再热板坯板; 以及冷却/卷绕步骤（S130），用于在热轧板坯在其温度为550-650℃的CT（卷取温度）下冷却之后卷取。（附图标记）（AA）开始; （BB）结束; （S110）板坯再加热（SRT：1150-1250℃）; （S120）热轧（FDT：800-850℃）; （S130）冷却/卷取（CT：520-600℃）

37. 发明公开

KR1020130023723A 탄소강 및 그 제조 방법 有权
标题翻译：碳钢和制造碳钢的方法
公开(公告)号：KR1020130023723A
公开(公告)日：2013-03-08
申请号：KR1020110086677
申请日：2011-08-29
申请人： 현대제철 주식회사
发明人： 정준호 , 김성주 , 장진영
IPC分类号： C21D8/00 , C22C38/00 , C21D9/46 , B21B3/00
CPC分类号： C21D8/0226 , C21D1/18 , C21D8/0263 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/40
摘要： PURPOSE: A carbon steel and a manufacturing method thereof are provided to obtain extra fine ferrite grains less than 4 micrometers in order to have excellent mechanical properties without adding alloying elements or process facilities. CONSTITUTION: A method for manufacturing carbon steels includes a step for reheating a steel slab in which 0.2-0.3 wt.% of carbon is added(S110); a step for primarily rolling the reheated steels in an austenite recrystallization section(S120); a step for secondarily rolling the primarily rolled steels in an austenite non-recrystallization section(S130); a step for cooling and winding the secondarily rolled steels to 550-650 deg. C. as a CT(Coiling Temperature); and a step for finally rolling below T0 in which the free energy of ferrite and the austenite are same in order to guide dynamic massive transformation. A slab reheating temperature is 1,200-1,300 deg. C.. The final rolled temperature(T0) is 1-30 deg. C.. The secondary rolling is implemented in a rolling stand having 5 to 10 rolling passes in order to make an average reduction ratio less than 5-15%. [Reference numerals] (AA) Start; (BB) End; (S110) Reheating slab(SRT: 1200-1300°C); (S120) Fist rolling; (S130) Second rolling(FDT: T0-1°C to T0-30°C); (S140) Cooling/coiling(CT: 550-650°C)
摘要翻译：目的：提供一种碳钢及其制造方法，以获得小于4微米的细小的铁素体晶粒，以便在不添加合金元素或加工设备的情况下具有优异的机械性能。构成：碳钢的制造方法包括对添加了0.2〜0.3重量％的碳的钢坯进行再加热的工序（S110）。在奥氏体再结晶段中主要轧制再热钢的步骤（S120）; 在奥氏体非再结晶段中二次轧制主要轧制钢的步骤（S130）; 将二次轧制钢冷却并卷绕到550-650度的步骤。 C.作为CT（卷取温度）; 并且在铁素体和奥氏体的自由能相同的情况下在T0以下最终轧制的步骤，以引导动态大规模转化。板坯再加热温度为1200-1300度。最终轧制温度（T0）为1-30度。在具有5〜10次轧制道次的轧制机架中进行二次轧制，以使平均压下率小于5-15％。（附图标记）（AA）开始; （BB）结束; （S110）再热板（SRT：1200-1300℃）（S120）拳头滚动; （S130）二次轧制（FDT：T0-1℃〜T0-30℃）; （S140）冷却/卷取（CT：550-650℃）

38. 发明公开

KR1020130002205A 비조질 열연 고탄소강 제조방법 有权
标题翻译：高碳非热处理钢的制造方法
公开(公告)号：KR1020130002205A
公开(公告)日：2013-01-07
申请号：KR1020110063272
申请日：2011-06-28
申请人： 현대제철 주식회사
发明人： 정준호 , 장진영 , 김성주
IPC分类号： C21D8/00 , C22C38/00 , C21D9/46 , B21B3/00
CPC分类号： C21D8/0226 , C21D8/005 , C21D8/0263 , C21D2211/005 , C21D2211/009 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46
摘要： PURPOSE: A method for producing non-normalized hot-rolled high carbon steel is provided to obtain high strength and toughness by implementing hot rolling in multiple stages of different temperature regions and super cooling a hot-deformed structure to low temperatures. CONSTITUTION: A method for producing non-normalized hot-rolled high carbon steel comprises the steps of: compressively transforming a steel slab, which comprises 0.43-0.47 wt% of C, 0.15-0.35 wt% of Si, 1.10-1.30 wt% of Mn, 0.03 wt% or less of P, 0.04 wt% or less of S, 0.02 wt% or less of Al, 0.2 wt% or less of Ni, 0.10-0.20 wt% of Cr, 0.05 wt.% or less of Mo, 0.08-0.15 wt% of V, 0.3 wt% or less of Cu, and the remaining amount of Fe and inevitable impurities, in a high temperature range of 1000-1200°C, rapidly cooling the transformed steel slab to a temperature range of 850-950°C, and compressively transforming the steel slab in a low temperature range of 850-950°C.
摘要翻译：目的：提供一种生产非标准化的热轧高碳钢的方法，通过在不同温度区域的多个阶段实施热轧并将热变形结构超冷却至低温来获得高强度和韧性。构成：非标准化的热轧高碳钢的制造方法包括以下步骤：对钢坯进行压缩变形，该钢坯包含C：0.43〜0.74重量％，Si：0.15〜0.35重量％，Si：1.10〜1.30重量％ Mn，0.03重量％以下的P，0.04重量％以下的S，0.02重量％以下的Al，0.2重量％以下的Ni，0.10〜0.20重量％的Cr，0.05重量％以下的Mo ，0.08-0.15重量％的V，0.3重量％以下的Cu和余量的Fe和不可避免的杂质，在1000-1200℃的高温范围内，将转化的钢坯快速冷却至 850-950℃，在850-950℃的低温范围内对钢坯进行压缩变形。

39. 发明授权

KR102100059B1 철근 및 그 제조방법 有权
公开(公告)号：KR102100059B1
公开(公告)日：2020-04-10
申请号：KR1020180127872
申请日：2018-10-25
申请人： 현대제철 주식회사
发明人： 이주상 , 정준호 , 김태형
IPC分类号： C22C38/44 , C22C38/42 , C22C38/46 , C22C38/06 , C22C38/00 , C22C38/04 , C22C38/02 , C21D8/02

40. 发明授权

KR101950597B1 철근 및 이의 제조 방법 有权
公开(公告)号：KR101950597B1
公开(公告)日：2019-02-20
申请号：KR1020170107252
申请日：2017-08-24
申请人： 현대제철 주식회사
发明人： 김태형 , 박정욱 , 이주상 , 정준호
IPC分类号： C21D8/06 , B21B3/00 , B21B1/46 , C22C38/02 , C22C38/04 , C22C38/24 , B21B37/74

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