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81. 发明公开

KR1020100024833A 강재의 수소지연파괴 특성 평가를 위한 팔라듐(Ｐｄ) 코팅용 전해액, 이를 이용한 팔라듐(Ｐｄ) 코팅방법과 코팅용 도금조 有权
标题翻译：用于高强度钢的氢延迟断裂质量评估的电镀（PD）涂层电解质溶液，使用其的涂料方法和镀层
公开(公告)号：KR1020100024833A
公开(公告)日：2010-03-08
申请号：KR1020080083568
申请日：2008-08-26
申请人： 주식회사 포스코
发明人： 김동현 , 이유환 , 류근수 , 석병설
IPC分类号： C25D3/50 , C25D5/00
CPC分类号： C25D3/50 , C25D17/02
摘要： PURPOSE: A palladium coating electrolyte solution for hydrogen delayed fracture quality evaluation of a steel material, and a method and a plating bath for palladium coating using the same are provided to achieve excellent hydrogen release prevention characteristic compared to cadmium coating, secure data stably and reduce the risk of safety accidents. CONSTITUTION: A palladium coating electrolyte solution comprises potassium hydroxide(KOH) aqueous solution and/or sodium hydroxide(NaOH) aqueous solution, and palladium chloride(PdCl2). The concentration of PdCl2 is 0.008~0.015M. The concentration of KOH aqueous solution is 2~15M. The concentration of NaOH aqueous solution is 6~10M.
摘要翻译：目的：提供一种用于钢材的氢延迟断裂质量评价的钯涂层电解质溶液，以及使用其的钯涂层的方法和电镀浴，以实现与镉涂层相比优异的防氢特性，稳定且稳定的数据安全事故的风险。构成：钯电镀溶液包含氢氧化钾（KOH）水溶液和/或氢氧化钠（NaOH）水溶液和氯化钯（PdCl 2）。 PdCl2浓度为0.008〜0.015M。 KOH水溶液的浓度为2〜15M。 NaOH水溶液的浓度为6〜10M。

82. 发明授权

KR100931200B1 압출 공정을 이용한 고강도 볼트의 제조방법 및 장치 有权
标题翻译： 압출공정을이용한고강도볼트의제조방법및장
公开(公告)号：KR100931200B1
公开(公告)日：2009-12-10
申请号：KR1020070136660
申请日：2007-12-24
申请人： 주식회사 포스코
发明人： 이유환 , 석병설 , 김재환
IPC分类号： B21J13/02 , B21K1/44
摘要： A method and a device for manufacturing a high-strength bolt using an extrusion process are provided to improve the service life of a dies device while machining and to obtain a high-strength bolt with low energy and low expenses by manufacturing a bolt using a dies device having machining portions having different diameters. As a device for manufacturing a high-strength bolt using an extrusion process, a dies device comprises a dies member(302) including a cylindrical machining portion(304) having a two-stage diameter composed of a first diameter and a second diameter which is smaller than the first diameter, a reinforcing ring(301) surrounding and housing the dies member, and a pressure member(303) pressurizing a preform of a bolt placed in the machining portion. A method for manufacturing a high-strength bolt comprises the steps of placing a preform of a bolt into a machining portion, and pressurizing the preform of a bolt using a pressure member to manufacture a head and a body of a bolt.
摘要翻译：本发明提供一种利用挤压工艺制造高强度螺栓的方法和装置，以提高模具装置在加工时的使用寿命，并通过使用模具制造螺栓来获得低能量且低成本的高强度螺栓具有不同直径的加工部分的装置。作为使用挤压工艺制造高强度螺栓的装置，模具装置包括模具构件（302），该模具构件包括具有由第一直径和第二直径构成的两级直径的圆柱形加工部分（304）小于第一直径;加强环（301），围绕并容纳模具构件;以及压力构件（303），用于对置于加工部分中的螺栓的预制件进行加压。一种用于制造高强度螺栓的方法包括以下步骤：将螺栓的预成型件放置到加工部分中，并且使用加压部件对螺栓的预成型件加压以制造螺栓的头部和主体。

83. 发明公开

KR1020090057564A 냉간압조용 고인성 열처리생략 선재 및 그 제조방법 有权
标题翻译：具有用于冷锻的高韧度热管的线条及其制造方法
公开(公告)号：KR1020090057564A
公开(公告)日：2009-06-08
申请号：KR1020070124194
申请日：2007-12-03
申请人： 주식회사 포스코
发明人： 이유환 , 박용식 , 손일헌
IPC分类号： C22C38/04 , C22C38/00
CPC分类号： C22C38/14 , C21D8/065 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/12
摘要： A non-annealed high toughness wire rod for cold forging and a method for manufacturing the same are provided to form organization of banitic ferrite and martensite-retained austenite mixture, thereby securing high toughness without heat treatment. A non-annealed high toughness wire rod for cold forging has organization of banitic ferrite 85~90% and martensite-retained austenite mixture 10~15% in area fraction. The wire rod contains C: 0.05~0.20 weight%, Si: 0.01~0.1 weight%, Mn: 1.0~2.0 weight%, Nb: 0.01~0.05 weight%, Mo: 0.01~0.1 weight%, N: 0.003~0.03 weight%, P: 0.035 weight% or less, S: 0.040 weight% or less, one or two selected from the group consisting of B: 0.001~0.004 weight% and Ti: 0.01~0.1 weight%, and the rest Fe and impurities. The mean grain size of the banitic ferrite is 200mum or less. The wire rod has a tensile strength of 800MPa or more and an impact toughness of 150J or more.
摘要翻译：提供一种用于冷锻的非退火高韧性线材及其制造方法，以形成银盐铁素体和马氏体残留奥氏体混合物的组织，从而确保高韧性而不进行热处理。一种用于冷锻的非退火高韧性线材具有85％〜90％的银盐铁素体和马氏体残留奥氏体混合物的面积分数为10〜15％。线材含有C：0.05〜0.20重量％，Si：0.01〜0.1重量％，Mn：1.0〜2.0重量％，Nb：0.01〜0.05重量％，Mo：0.01〜0.1重量％，N：0.003〜0.03重量％％，P：0.035重量％以下，S：0.040重量％以下，选自B：0.001〜0.004重量％和Ti：0.01〜0.1重量％的一种或两种，其余的Fe和杂质。银盐铁矿的平均粒径为200μm以下。线材的拉伸强度为800MPa以上，冲击韧性为150J以上。

84. 发明授权

KR100856313B1 가공성이 우수한 고강도 부품용 보론강 선재 및 그제조방법 有权
标题翻译：线材具有优异的成形性能及其制造方法
公开(公告)号：KR100856313B1
公开(公告)日：2008-09-03
申请号：KR1020060133196
申请日：2006-12-22
申请人： 주식회사 포스코
发明人： 이상윤 , 이유환 , 이주동
IPC分类号： C22C38/00 , C21D8/02
摘要： 가공성이 우수한 고강도 부품용 보론강 선재가 제공된다.
본 발명의 보론강 선재는 중량%로 C:0.15-0.3%, Si:0.05-1.5%, Mn:0.1-1.5%, P:0.015%이하, S:0.015%이하, O:0.005% 이하, B:0.001-0.004%, Cr:0.3-1.5%를 함유하고, 여기에, Nb 0.01-0.5% 및 Ti 0.02-0.1%로 이루어진 그룹에서 선택된 1종 또는 2종 이상을 포함하고, 나머지 Fe 및 기타 불순물로 조성되며, 그 미세조직이 70%이상의 페라이트와 나머지는 펄라이트로 이루어진다.
또한 본 발명의 보론강 선재의 제조방법은 ,상기 조성의 빌릿을 Ae3~Ae3+80℃에서 제어압연하는 단계, 상기 압연된 선재를 0.8℃/S이하로 냉각하는 단계를 포함하여 이루어진다.
보론강, 연질, 냉간압조성, 열처리 생략, 선재

85. 发明授权

KR100833079B1 냉간압조특성이 우수한 연질 보론강 선재의 제조방법 有权
标题翻译：制造具有优良冷锻特性的软质材料的方法
公开(公告)号：KR100833079B1
公开(公告)日：2008-05-27
申请号：KR1020060133197
申请日：2006-12-22
申请人： 주식회사 포스코
发明人： 이유환 , 이상윤 , 이주동
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C22C38/32 , C21D8/065 , C22C38/02 , C22C38/04 , C22C38/28
摘要： A soft boron steel wire that has excellent cold forgeability, and can omit spheroidizing heat treatment is provided, and a manufacturing method of the soft boron steel wire is provided. A method for manufacturing a soft boron steel wire having excellent cold forgeability comprises the steps of: heating a billet comprising, by weight percent, 0.17 to 0.22% of carbon, 0.15 to 0.35% of silicon, 0.70 to 0.90% of manganese, 0.70 to 0.90% of chromium, 0.035% or less of phosphorous, 0.040% or less of sulfur, 0.005% or less of oxygen, 0.001 to 0.004% of boron, and 0.01 to 0.1% of titanium with the balance of Fe and other impurities in a temperature range of Ae3+150 deg.C to Ae3-250 deg.C for 30 minutes or more; cooling the heated billet to a temperature range of Ar3+50 deg.C to Ar3+100 deg.C in a cooling rate of 1 to 3 deg.C/sec, and rolling the cooled billet into a wire in the temperature range; and cooling the rolled wire in a cooling rate of 0.1 to 1 deg.C/sec.
摘要翻译：提供了具有优异的冷锻性，并且可以省略球化热处理的软硼钢丝，并且提供了软硼钢线的制造方法。制造具有优异的冷锻性的软硼钢丝的方法包括以下步骤：加热坯料，其重量百分比为0.17至0.22％的碳，0.15至0.35％的硅，0.70至0.90％的锰，0.70至 0.90％的铬，0.035％以下的磷，0.040％以下的硫，0.005％以下的氧，0.001〜0.004％的硼，0.01〜0.1％的钛，余量为Fe和其他杂质温度范围为Ae3 + 150℃〜Ae3-250℃30分钟以上; 以1〜3℃/秒的冷却速度将加热后的坯料冷却至Ar3 + 50℃〜Ar3 + 100℃的温度范围，在该温度范围内将冷却后的坯料轧制成钢丝; 并以0.1〜1℃/秒的冷却速度冷却轧制线。

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