公开(公告)号：KR100328069B1

公开(公告)日：2002-05-10

申请号：KR1019970070817

申请日：1997-12-19

申请人： 주식회사 포스코

发明人： 장용관 ,  채종섭 ,  이익균

IPC分类号： B21B3/00

摘要： PURPOSE: A method for manufacturing a wire rod for springs is provided to suppress the occurrence of a complex structure of martensite+bainite during cooling wire rod, thus produce wire rod having good ductility and fatigue resistance. CONSTITUTION: The method for manufacturing a wire rod for springs includes the steps of reheating a billet comprising C 0.51 to 0.59 wt.%, Si 1.20 to 1.60 wt.%, Mn 0.60 to 0.90 wt.%, Cr 0.6 to 0.90 wt.%, 0.035 wt.% or less of P, 0.035 wt.% or less of S, V 0.005 to 0.010 wt.%, a balance of Fe and incidental impurities to the temperature range of 900 to 1050°C, followed by hot rolling of wire rod; water quenching the wire rod; coiling the quenched wire rod in the temperature range of 760 to 800°C; cooling the wire rod coil to the temperature range of 625 to 675°C at a cooling rate of 1.3 to 1.9°C/sec; cooling the wire rod coil to the temperature range of 540 to 660°C at a cooling rate of 0.3 to 0.5°C/sec; and air cooling the wire rod to ambient temperature.

公开(公告)号：KR100949732B1

公开(公告)日：2010-03-25

申请号：KR1020030049807

申请日：2003-07-21

申请人： 주식회사 포스코

发明人： 채종섭 ,  강명권

IPC分类号： B21B37/44

摘要： 본 발명은 압연공정 동안 급냉구간과 최종 공형선재의 권취온도에 대응하여 순차별 노즐의 유량편차로 냉각수를 분사시켜 선재를 냉각시키는 제어압연선재의 냉각을 위한 복합냉각노즐 어셈블리에 관한 것으로서, 중심부에 선재경로 관통구(R)가 형성되면서, 상호 소정간격(g)을 가지도록 결합하는 입출구 가이드(21,22,23,24)와, 이들의 결합에 의하여 형성되는 상부노즐(100,100-1,100-2)과, 상기 상호 결합된 입출구 가이드(21,22,23,24)의 상부에 밀착 고정되는 냉각수 유출방지판(28)과, 상기 입출구 가이드(21,22,23,24)에 형성된 축 받침대(20P)로 이루어지는 상부 덮개판(20)과; 상기 축 받침대(20P)와 회전축(20H)에 의하여 회전개폐 가능하도록 고정되는 축 받침대(20P')가 일측면부에 형성되면서, 중심부에 선재경로 관통구(R)가 형성되면서, 상호 소정간격(g)을 가지도록 결합하는 입출구 가이드(21',22',23',24')와, 이들의 결합에 의하여 형성되는 하부노즐(100',100'-1,100'-2)과, 상기 상호 결합된 입출구 가이드(21',22',23',24')의 하부에 밀착 고정되는 필터(27)로 구성되어 상기 상부 덮개판(20)과 상호 대칭적 구조로 이루어지는 하부 베이스판(20')과; 상기 하부 베이스판(20')을 고정하면서, 이에 형성되는 하부노즐(100',100'-1,100'-2)에 냉각수를 공급하도록 냉각수 유통구(30-1,2,3)를 형성되고, 상기 냉각수 유통구(30-1,2,3)에 배관되어 냉각수를 공급하는 냉각수 유입구(W)가 형성된 장치프레임(30)으로 구성되는 것을 특징으로 하는 제어압연선재의 냉각을 위한 복합냉각노즐 어셈 블리를 제공한다.
제어압연선재, 상부덮개판, 하부베이스판, 입출구가이드, 냉각수유통구

公开(公告)号：KR100685048B1

公开(公告)日：2007-02-20

申请号：KR1020050129368

申请日：2005-12-26

申请人： 주식회사 포스코

发明人： 김홍수 ,  채종섭 ,  정호창

IPC分类号： B23P15/00

摘要： A method of manufacturing a grooved roll for rough rolling is provided to increase roll hardness value to prolong lifespan of the roll. A method of manufacturing a grooved roll for rough rolling includes the steps of grinding a flat roll to obtain a spherical roll, annealing the ground spherical roll at a temperature of 590~620 degrees, and polishing the spherical roll. During the annealing step, the spherical roll is heated to the temperature of 590~620 degrees and then annealed and cooled to a temperature of 480~520 degrees, and then, heated to a temperature of 900~930 degrees. The grinding step is performed until a margin of 3~7mm from a dimension of the polished spherical roll remains. The annealing step is performed for ten hours or more, preferably 20~50 hours.

摘要翻译： 提供一种制造用于粗轧的开槽辊的方法以增加辊硬度值以延长辊的使用寿命。 一种制造用于粗轧的开槽辊的方法包括以下步骤：研磨平辊以获得球形辊;在590〜620度的温度下对所述研磨的球形辊进行退火;以及抛光所述球形辊。 在退火步骤中，将球形辊加热至590〜620度的温度，然后退火并冷却至480〜520度的温度，然后加热至900〜930度的温度。 研磨步骤一直进行到抛光球形辊的尺寸留有3〜7mm的余量。 退火步骤进行10小时以上，优选20〜50小时。

公开(公告)号：KR1020050010580A

公开(公告)日：2005-01-28

申请号：KR1020030049807

申请日：2003-07-21

申请人： 주식회사 포스코

发明人： 채종섭 ,  강명권

IPC分类号： B21B37/44

CPC分类号： B21B45/0233 ,  B21B1/16 ,  B21B45/0224

摘要： PURPOSE: To provide a complex cooling nozzle assembly in which a plural nozzles are formed in one body, injection pressure of sequential nozzles is different, the outer circumference of the nozzles is vertically divided into opening and sealing types, the nozzles are disposed for single application, and a through hole of the nozzles is shortly formed to easily control injection and naturally buffer high pressure water during the initial injection. CONSTITUTION: The complex cooling nozzle assembly for cooling control rolled wire rod comprises an upper cover plate(20) comprising input/output guides(21-24) in a central part of which a wire rod path penetration hole is formed, and which are connected to each other in such a way that they are spaced apart from each other in a certain gap, upper nozzles(100,100-1,100-2) formed by connection of the input/output guides, a cooling water outflow prevention plate(28) closely adhered to an upper part of the input/output guides, and a shaft support formed on the input/output guides; a lower base plate(20') comprising input/output guides(21'-24') on one side surface of which a shaft support(20'P) is formed in such a way that the shaft support(20'P) is rotatably fixed to the shaft support by a rotary shaft(20h), in a central part of which a wire rod path penetration hole is formed, and which are connected to each other in such a way that they are spaced apart from each other in a certain gap, lower nozzles(100',100'-1,100'-2) formed by connection of the input/output guides, and a filter(27) closely adhered to a lower part of the input/output guides; and an unit frame comprising cooling water circulation ports for supplying cooling water to the lower nozzles, and a cooling water inflow port piped to the cooling water circulation ports to supply cooling water to the cooling water circulation ports.

摘要翻译： 目的：为了提供一个复杂的冷却喷嘴组件，其中在一个体内形成多个喷嘴，顺序喷嘴的喷射压力不同，喷嘴的外周被纵向分为开口和密封类型，这些喷嘴设置为单次使用 并且喷嘴的通孔不久形成，以容易地控制喷射，并且在初始喷射期间自然缓冲高压水。 构成：用于冷却控制轧制线材的复杂冷却喷嘴组件包括上盖板（20），其包括在其中心部分中形成有线材通孔的输入/输出引导件（21-24），并且连接 彼此间隔开的方式彼此间隔开，通过输入/输出引导件的连接形成的上喷嘴（100,100-1,100-2），紧密粘附的冷却水流出防止板（28） 到输入/输出引导件的上部，以及形成在输入/输出引导件上的轴支撑件; 在一个侧表面上包括输入/​​输出引导件（21'-24'）的下基板（20'）以轴支撑件（20'P）的形式形成轴支撑件（20'P） 通过旋转轴（20h）可旋转地固定到轴支撑件，在其中心部分形成有线材通孔，并且它们彼此连接，使得它们彼此间隔开 一定的间隙，通过输入/输出引导件的连接形成的下部喷嘴（100'，100'-1,100'-2）和紧密地粘附到输入/输出引导件的下部的过滤器（27） 以及单元框架，其包括用于向下喷嘴供给冷却水的冷却水循环端口，以及管道输送到冷却水循环端口的冷却水流入口，以向冷却水循环端口供应冷却水。

公开(公告)号：KR1020040040872A

公开(公告)日：2004-05-13

申请号：KR1020020069211

申请日：2002-11-08

申请人： 주식회사 포스코

发明人： 채종섭 ,  이상훈

IPC分类号： B21B38/00

CPC分类号： B21B38/02 ,  B21B2263/04

摘要： PURPOSE: An apparatus for sorting and checking position of hot bloom with non-allowable camber is provided to promptly and accurately measure whether camber generation degree of the hot bloom does exceed a preset camber amount and accurately measure position of the hot bloom. CONSTITUTION: The apparatus comprises a piston(20) moved forward by high pressure air and moved backward by spring(22); a camber measuring rod(30) which is integrally formed at the piston and has a long length in a direction in which the piston is moved forward; a high pressure supply pipe(54) which supplies high pressure air to move forward the piston, and on which a valve(52) is formed; a valve(60) connected to the piston to receive pressure of the rear side of the piston so that the valve is opened and closed by a preset pressure; a striker(76) moved in one direction when the valve(60) is opened and returned to an original position of the striker by spring(74); and a limit switch(80) operated by the striker to generate an electrical signal, wherein the apparatus further comprises a cooling air injection hole formed by penetrating the piston and the camber measuring rod; and a cooling air supply pipe(55) which connects front and rear sides of the valve(52), and on which a valve(53) is formed.

摘要翻译： 目的：提供一种用于分配和检查不允许弧度的热油的位置的装置，以及时准确地测量热油的曲面发生程度是否超过预设的外倾量，并准确地测量热盛的位置。 构成：该装置包括通过高压空气向前移动并通过弹簧（22）向后移动的活塞（20）。 整体地形成在活塞上并且在活塞向前移动的方向上具有长的长度的弯度测量杆（30） 提供高压空气以向前移动的高压供应管道（54），其上形成有阀（52）; 连接到所述活塞以接收所述活塞的后侧的压力以使所述阀以预定压力打开和关闭的阀门（60）; 当阀（60）打开时，冲头（76）在一个方向上移动，并通过弹簧（74）返回到撞针的原始位置; 以及由撞针操作以产生电信号的限位开关（80），其中所述装置还包括通过穿透所述活塞和所述外倾测量杆而形成的冷却空气喷射孔; 以及连接阀（52）的前后侧并形成有阀（53）的冷却空气供给管（55）。

公开(公告)号：KR1019990051474A

公开(公告)日：1999-07-05

申请号：KR1019970070817

申请日：1997-12-19

申请人： 주식회사 포스코

发明人： 장용관 ,  채종섭 ,  이익균

IPC分类号： B21B3/00

摘要： 본 발명은 자동차의 밸브 등에 이용되는 스프링용 선재의 제조방법에 관한 것이며; 그 목적은 선재 냉각시 저온조직(베이나이트+마르텐사이트)이 발생하지 않아 신선가공성이 우수한 스프링용 선재의 제조방법을 제공함에 있다.
상기 목적을 달성하기 위한 본 발명은, 중량%로 C: 0.51-0.59%, Si: 1.20-1.60%, Mn: 0.60-0.90%, Cr:0.6-0.90%, P:0.035%이하, S: 0.035%이하, V: 0.005-0.010% 및 나머지 Fe와 기타 불가피하게 함유되는 불순물로 조성되는 강편을 900-1050℃로 가열하여 선재압연하고, 이어 물분사에 의해 급속냉각하여 760-800℃의 온도에서 권취한 다음, 1.3-1.9℃/sec의 냉각속도로 625-675℃의 온도로 냉각하고, 이어 0.3-0.5℃/sec의 냉각속도로 540-660℃의 온도로 냉각한 후 상온까지 공냉하여 이루어지는 스프링용 선재의 제조방법에 관한 것을 그 요지로 한다.