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公开(公告)号：KR101804941B1
公开(公告)日：2017-12-05
申请号：KR1020160149992
申请日：2016-11-11
Applicant: 동국제강주식회사
CPC classification number: B21B1/163 , B21B37/74 , B21B2261/20 , C21D9/525 , C22C38/02 , C22C38/04 , C22C38/24 , E04C5/02
Abstract: 본발명은연신율과항복비가우수한철근및 그제조방법에관한것으로, 열간압연공정으로제조된철근형상의철근압연체를냉각하는냉각공정에서철근압연체를냉각중에베이나이트생성시작온도이하에서철근압연체를베이나이트생성시작온도이상으로복열하는복열단계와상기복열단계후 철근압연체를수냉하는강냉단계를포함하여철근의표면층에템퍼드마르텐사이트조직을감싸는템퍼드마르텐사이트와페라이트의이상조직을가지는제2외부층부을형성하여철근의연신율을높이고, 항복비를낮춰철근의품질을크게향상시키며, 별도의보온열처리(템퍼링) 공정없이제품자체의열전달을이용한자체복열상태를이용하여철근을제조하여철근의제조시간을단축시키고철근의생산성을크게향상시킨다.
Abstract translation: 本发明涉及伸长率和屈服比优异的钢筋及其制造方法，在对通过热轧工序制造的钢筋形状的钢筋进行冷却的冷却工序中， 以及将重建工序后的钢筋冷却至水冷工序的回火工序，其中，在钢筋的表层上涂覆回火马氏体和包围回火马氏体组织的铁素体组织， 钢筋是通过形成第二外层部分来增强钢筋的伸长率，并且通过降低屈服比来提高钢筋的质量，并且通过使用产品本身的热传递而不用单独的热处理工艺来制造钢筋， 由此缩短了钢筋的制造时间并大大提高了钢筋的生产率。
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公开(公告)号：KR101689155B1
公开(公告)日：2016-12-23
申请号：KR1020157015172
申请日：2013-11-26
Applicant: 에스엠에스 그룹 게엠베하
CPC classification number: B21B45/0218 , B21B37/74 , B21B45/0206 , B21B45/0209 , B21B45/0233 , B21B45/0281 , B21B2261/20
Abstract: 본발명은압연스톡(2)을냉각하기위한, 바람직하게는냉간압연동안냉각하기위한장치(3)에관한것이며, 상기장치는압연스톡(2) 상에냉각매체(34)를도포하기위한노즐(32)을포함하고, 압연스톡(2) 상에냉각매체(34)를도포하기위해노즐(32)과유체연통되어스트립이동평면(10)에대해실질적으로평행하게연장되는냉각챔버(4)가제공된다.
Abstract translation: 一种用于冷轧轧制坯料的装置，优选用于冷轧期间的冷却，包括用于向轧制坯料施加冷却介质的喷嘴，其中与喷嘴流体连通且基本平行于轧条运行平面延伸的冷却室被提供 用于将冷却介质施加到轧制坯料上。
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公开(公告)号：KR101546275B1
公开(公告)日：2015-08-21
申请号：KR1020140079736
申请日：2014-06-27
Applicant: 현대제철 주식회사
CPC classification number: B21B45/0209 , B21B37/76 , B21B38/006 , B21B2045/0212 , B21B2261/20
Abstract: 선재코일용 냉각장치에 대한 발명이 개시된다. 본 발명의 선재코일용 냉각장치는: 이송롤러를 따라 이동하는 선재코일의 온도를 측정하는 온도측정부와, 온도측정부의 측정값을 전달받는 제어부와, 제어부의 제어신호로 동작되어 선재코일을 향하여 냉각풍을 공급하는 송풍부 및 송풍부와 선재코일의 사이에 설치되며 송풍부에서 선재코일로 이동하는 냉각풍의 이동방향을 제어하는 풍향조절부를 포함하는 것을 특징으로 한다.
Abstract translation: 公开了一种用于线圈的冷却装置。 根据本发明，线圈冷却装置包括：温度测量单元，测量沿着转印辊移动的线圈的温度; 接收温度测量单元的测量值的控制单元; 吹风机单元，由所述控制单元的控制信号操作，以向所述线圈供应冷却风; 以及风向控制单元，其安装在所述鼓风机单元和所述线圈之间，控制在所述鼓风机单元中移动到所述线圈的冷却风的移动方向。
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公开(公告)号：KR101464093B1
公开(公告)日：2014-11-21
申请号：KR1020137007610
申请日：2011-09-05
Applicant: 미쯔비시 히다찌 세이떼쯔 기까이 가부시끼가이샤 , 신닛테츠스미킨 카부시키카이샤
CPC classification number: B21B1/26 , B21B37/76 , B21B38/02 , B21B39/006 , B21B39/08 , B21B45/0218 , B21B2261/20 , B21B2265/02 , B21C51/00
Abstract: 압연 직후의 급속 균일 냉각에 의해 원하는 재질이 얻어짐과 함께 조기의 판 장력 및 판 형상 계측에 의해 수율 향상이 가능한 열연 강대의 제조 장치 및 제조 방법을 제공하기 위해서, 마무리 압연기열 (11) 과, 그 마무리 압연기열의 출측 직후에 설치된 제 1 냉각 장치 (13) 와, 그 제 1 냉각 장치의 출측에 설치되어 스트립 (S) 의 상, 하 양면에 맞닿는 핀치 롤 (14) 을 구비함과 함께, 상기 제 1 냉각 장치와 핀치 롤 사이에 적어도 스트립 (S) 의 상방에 위치한 배수 롤 (15) 을 배치하고, 또한 그 배수 롤과 핀치 롤 사이에 스트립 (S) 의 장력 및 형상을 측정하는 장력/형상 측정 장치 (16) 를 설치하였다.
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公开(公告)号：KR1020120064729A
公开(公告)日：2012-06-19
申请号：KR1020127012104
申请日：2010-11-18
Applicant: 신닛테츠스미킨 카부시키카이샤
CPC classification number: B21C51/00 , B21B37/76 , B21B38/006 , B21B2261/20 , B21B2275/06
Abstract: 마무리 압연기내로부터의 냉각 가능한 냉각 장치가 배치되어도, 강판의 냉각 제어가 가능한 열연 강판의 제조 장치를 제공한다. 열간 마무리 압연기열의 최종 스탠드 내에 그 적어도 일부가 배치되고, 높은 수량 밀도로 냉각수를 분사 가능한 직후 급랭 장치(20)와, 최종 스탠드의 입측의 강판의 표면 온도를 측정하는 최종 스탠드 입측 온도 측정 장치(45)와, 최종 스탠드의 입측의 강판의 속도를 측정하는 강판 속도 측정 수단(47)과, 측정된 강판의 표면 온도, 강판 속도, 및 직후 급랭 장치의 급수량 또는 급수 압력에 기초하여 급랭 정지 예측 온도를 산출하는 급랭 정지 온도 예측 장치(51)와, 급랭 정지 예측 온도를, 목표로 하는 급랭 정지 온도에 일치시키도록 직후 급랭 장치의 급수량 또는 급수 압력을 수정하는 직후 급랭 제어 장치(52)를 구비한다.
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Patent Agency Ranking
公开(公告)号：KR1020050033708A
公开(公告)日：2005-04-13
申请号：KR1020030069554
申请日：2003-10-07
Applicant: 주식회사 포스코
Inventor： 장영상
IPC: B21B45/02
CPC classification number: B21B45/0203 , B21B1/26 , B21B15/0085 , B21B37/74 , B21B2261/04 , B21B2261/06 , B21B2261/12 , B21B2261/20
Abstract: Provided are a method for bonding both rolled strips at an even temperature by clearing a temperature difference between a top end of succeeding hot rolled strip and a tail end of preceding hot rolled strip in continuous hot rolling process, and a continuous hot rolling apparatus for improving rolling efficiency by installing a cooling unit between a coil box and a bonding machine. A hot rolling apparatus for continuous rolling comprises: a roughing mill(1) for rough rolling a cooled slab; a coil box(10) for storing the coils and supplying the hot rolled strip to a succeeding process after coiling a hot rolled strip(5) rough rolled in the roughing mill into a plurality of coils; a cooling unit(30) installed between the coil box and the bonding machine to cool a top end of succeeding hot rolled strip(9) by a cooling controller in a process of moving the uncoiled coil after continuously uncoil the coil; a bonding machine(20) for bonding a top end of the cooled succeeding hot rolled strip and a tail end of preceding hot rolled strip(7) to each other; and a finishing mill(50) for continuously finish rolling the bonded hot rolled strip.
Abstract translation: 提供了一种通过在连续热轧过程中清除后续热轧带材的顶端和前端热轧带材的尾端之间的温差来均匀地粘合两个轧制带材的方法，以及用于改进的连续热轧装置 通过在线圈箱和粘合机之间安装冷却单元来实现轧制效率。 一种用于连续轧制的热轧装置包括：用于粗轧冷却板坯的粗轧机（1） 在将粗轧机中粗轧的热轧带材（5）卷绕成多个线圈之后，用于存储线圈并将热轧带材供给到后续工序的线圈箱（10） 安装在所述线圈箱和所述接合机之间的冷却单元（30），用于在连续地将所述线圈解开之后，使所述未卷绕的线圈移动的过程中通过冷却控制器来冷却后续热轧带材（9）的顶端; 粘结机（20），用于将冷却的后续热轧带材的顶端和前热轧带材（7）的尾端彼此粘合; 以及用于对粘结的热轧带材进行连续精轧的精轧机（50）。
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公开(公告)号：KR1020040057351A
公开(公告)日：2004-07-02
申请号：KR1020020084061
申请日：2002-12-26
Applicant: 주식회사 포스코
IPC: B21B37/16
CPC classification number: B21B37/22 , B21B3/02 , B21B2261/04 , B21B2261/06 , B21B2261/20 , C22C38/02 , C22C38/04
Abstract: PURPOSE: A width rolling method of strip in the hot rolled strip manufacturing process is provided which is capable of controlling accurate width margin in width control of rough rolling by predicting width change behavior in the finish rolling process. CONSTITUTION: The width rolling method comprises a step of calculating width margin calculation values (WMGN) per product divided according to thickness by judging whether order thickness (PCTHK) of inputted bar is larger or smaller than reference thickness; a step of obtaining a variable K by designating linear expansion coefficient (A1) of ferrite zone, linear expansion coefficient (A2) of phase transformation section and linear expansion coefficient (A3) of austenite zone and applying carbon content (IC), silicon content (ISI) and manganese content (IMN) of width rolling bar; a step of obtaining bar expansion length (ETH) at a target temperature T by multiplying a rough rolling target temperature (RDTAIM) by the linear expansion coefficient of austenite zone; a step of calculating a bar length (ETO) at a room temperature(25 deg.C) by applying the linear expansion coefficient of ferrite zone and the linear expansion coefficient of phase transformation section; a step of calculating a linear expansion coefficient (ET) by operating the calculated bar length at a room temperature and the bar expansion length at the target temperature T as (ETH-ETO)/(1+ETO); a step of predicting a linear expansion ratio calculation value (EXECRC) by operating(1+ETxRDTAIM) from the calculated linear expansion coefficient, wherein the RDTAIM is a rough rolling target temperature; and a step of calculating a width calculation setting value (R2WGM) by operating the predicted width margin calculation values and the linear expansion ratio calculation value as PCWIDxEXHCRC+WMGN, wherein the PCWID is an order width.
Abstract translation: 目的：提供热轧带材制造工艺中的带材的宽幅轧制方法，其能够通过预测精轧过程中的宽度变化行为来控制粗轧宽度控制中的精确宽度裕度。 构成：宽幅轧制方法包括通过判断输入棒的阶数厚度（PCTHK）是否大于或小于参考厚度，根据厚度计算每个产品的宽度余量计算值（WMGN）的步骤; 通过指定铁素体区的线性膨胀系数（A1），相变截面的线膨胀系数（A2）和奥氏体区的线膨胀系数（A3）以及碳含量（IC），硅含量（ ISI）和宽度轧制棒的锰含量（IMN）; 通过将粗轧目标温度（RDTAIM）乘以奥氏体区的线膨胀系数来获得目标温度T下的棒膨胀长度（ETH）的步骤; 通过施加铁素体区的线膨胀系数和相变部的线膨胀系数，计算室温（25℃）的条长度（ETO）的步骤; 通过将室温下的计算棒长度和目标温度T下的棒膨胀长度设为（ETH-ETO）/（1 + ETO））来计算线性膨胀系数（ET）的步骤; 通过从计算的线膨胀系数运算（1 + ETxRDTAIM）来预测线膨胀率计算值（EXECRC）的步骤，其中RDTAIM是粗轧目标温度; 以及通过将预测宽度裕度计算值和线膨胀比计算值作为PCWIDxEXHCRC + WMGN计算宽度计算设定值（R2WGM）的步骤，其中PCWID是订单宽度。
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公开(公告)号：KR1020040044325A
公开(公告)日：2004-05-28
申请号：KR1020020072889
申请日：2002-11-21
Applicant: 주식회사 포스코
IPC: B21B37/16
CPC classification number: B21B37/165 , B21B37/58 , B21B37/72 , B21B38/006 , B21B38/04 , B21B2261/04 , B21B2261/20 , B21B2271/02
Abstract: PURPOSE: A method for controlling thickness of top end part of hot rolled strip is provided to further improve thickness accuracy of the top end part of the rolled strip by controlling thickness of the top end part of the hot rolled strip using thickness of the intermediate part of the rolled strip during hot finish rolling of strip. CONSTITUTION: In a method for hot finish rolling a hot rolled strip using a hot finishing mill(10) consisting of a plurality of rolling stands(11), the method for controlling thickness of top end part of the hot rolled strip comprises a step of measuring temperature of the hot rolled strip using a thermometer(12) at the input side of the finishing mill, obtaining temperature of the input side of the respective stands using the measured temperature values, obtaining hot deformation resistance and rolling force from the obtained input side temperature values of the stands, and obtaining roll gap set values at the respective stands for obtaining target thickness using the obtained hot deformation resistance and rolling force; a step of setting roll gaps of the finishing mill according to the obtained roll gap set values; a step of finish rolling the rolled strip after setting the roll gaps, measuring thickness of the top end part of the hot rolled strip using an intermediate thickness gauge(14) in the intermediate region of the finishing mill, and obtaining a deviation between the measured thickness values and a target thickness; a step of obtaining a roll gap correction amount for at least final stand using the obtained thickness deviation of the top end part of the rolled strip; and a step of resetting a roll gap according to the obtained roll gap correction amount.
Abstract translation: 目的：提供一种控制热轧带材顶端厚度的方法，通过使用中间部分的厚度控制热轧带材的顶端部分的厚度，进一步提高轧制带材的顶端部分的厚度精度 的轧制条。 构成：在使用由多个轧制机架（11）构成的热精轧机（10）对热轧带材进行热精轧的方法中，用于控制热轧带材的顶端部分厚度的方法包括： 使用在精轧机的输入侧的温度计（12）测量热轧带材的温度，使用测量的温度值获得各机架的输入侧的温度，从所获得的输入侧获得热变形阻力和轧制力 使用所获得的热变形阻力和轧制力来获得各机架的辊间隙设定值以获得目标厚度; 根据获得的辊间隙设定值设定精轧机的轧辊间隙的步骤; 在设定辊间隙之后对轧制带进行精轧的步骤，使用中间厚度计（14）在精轧机的中间区域测量热轧带材的顶端部的厚度，并获得测量的 厚度值和目标厚度; 使用获得的轧制带材的顶端部分的厚度偏差获得至少最终机架的辊间隙校正量的步骤; 以及根据获得的辊间隙校正量来重新设定辊间隙的步骤。
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公开(公告)号：KR1020040020739A
公开(公告)日：2004-03-09
申请号：KR1020020053003
申请日：2002-09-03
Applicant: 주식회사 포스코
IPC: B21B37/22
CPC classification number: B21B37/22 , B21B2261/04 , B21B2261/20
Abstract: PURPOSE: A rolling method for compensating width variation by instantaneous coiling tension of hot rolled strip is provided to prevent width shortage of hot rolled strip generated during coiling in the hot rolling process by performing widthwise rolling of bar in such a way that width of width shortage part is larger than width of the other part. CONSTITUTION: The rolling method for compensating width variation by instantaneous coiling tension of hot rolled strip comprises a step (401) of setting a width increment (A) for compensating the width shortage part by collecting past actual results of width shortage per thickness of coiling completed strip in the coiling process; a step (402) of setting the section as a rolling lengthwise position at which width is to be increased after calculating a time it takes for hot working average strain resistance to be air cooled to the lowermost temperature from a target temperature at the rear side of final rolling mill; a step (403) of setting length (L1) of width increased part of bar; a step (404) of calculating control initiating time (t1) and completion time (t2) of width increase during width rolling based on the value set in the setting step; a step (405) of increasing the width as much as the set width increment from the control initiating time (t1) to the completion time (t2) calculated in the calculation step during widthwise rolling; and a step (406) of performing normal widthwise rolling up to a tail part of bar by restoring the width increment to the original state.
Abstract translation: 目的：提供一种用于通过热轧带材的瞬时卷绕张力来补偿宽度变化的轧制方法，以防止在热轧过程中卷取期间产生的热轧带材的宽度短缺，通过以宽度不足的宽度进行钢筋的横向轧制 部分大于其他部分的宽度。 构成：用于通过热轧带材的瞬时卷绕张力来补偿宽度变化的轧制方法包括步骤（401），其通过收集完成的每个卷取厚度的宽度短缺的实际结果来设定用于补偿宽度不足部分的宽度增量（A） 卷取过程中的条带; 将所述部分设定为在将热风平均应变阻力从空气冷却到最低温度所需的时间从目标温度的后侧设定为要在其上增加宽度的轧制纵向位置的步骤（402） 最终轧机; 设置条的宽度增加部分的长度（L1）的步骤（403） 基于在设定步骤中设定的值，计算宽度轧制期间的宽度增加的控制开始时间（t1）和完成时间（t2）的步骤（404） 在宽度方向轧制中，在计算步骤中计算出的从控制开始时间（t1）到完成时间（t2）的宽度增加到设定宽度增量的步骤（405） 以及通过将宽度增量恢复到原始状态来执行正常横向卷曲到杆的尾部的步骤（406）。
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公开(公告)号：KR1020030054974A
公开(公告)日：2003-07-02
申请号：KR1020010085415
申请日：2001-12-26
Applicant: 주식회사 포스코
IPC: B21B45/02
CPC classification number: B21B45/0218 , B21B45/0233 , B21B45/0278 , B21B2015/0057 , B21B2015/0064 , B21B2261/20
Abstract: PURPOSE: A method for cooling hot rolled coil is provided to cool strip of the hot rolled coil to secure retained austenite fraction uniformed in width and length directions of the strip in manufacturing transformation induced plasticity hot rolled coil. CONSTITUTION: In a method for manufacturing strip by rapidly cooling strip of hot rolled coil that is rolled to a certain thickness through hot rolling mill(2), primarily rapidly cooled in water cooling section(3) and coiled in a coil shape in down coiler(4), the method for cooling the hot rolled coil comprises a step of uncoiling the coiled hot rolled coil in a direction at uncoiler(5); a step of furnishing upper and lower cooling headers having a plural nozzles in a width direction of the strip at upper and lower sides of the strip proceeded in a direction after being uncoiled in the above step and forcibly rapidly cooling the strip to a temperature of 100 deg.C or less using cooling water sprayed from the headers one or more of which are installed in a length direction of the strip; a step of drying moisture remained on the surface of the strip rapidly cooled in the rapid cooling step in dryer(12) using a heat source of high temperature; and a step of recoiling the strip dried in the drying step at recoiler(7).
Abstract translation: 目的：提供一种用于冷却热轧卷材的方法，以冷却热轧卷材的带材，以确保在制造转变诱导的可塑性热轧卷材中条带宽度和长度方向上均匀的残留奥氏体分数。 构成：在通过热轧线圈的快速冷却条（通过热轧机（2））轧制成一定厚度的方法来制造带材的方法中，主要是在水冷部分（3）中快速冷却并在卷取机中卷成线圈形状 （4）中，用于冷却热轧卷材的方法包括在卷绕机（5）的方向上卷绕卷取的热轧卷材的步骤。 在上述步骤中，在条带的上侧和下侧沿着条带的宽度方向设置具有多个喷嘴的上下冷却集管的步骤，并且在上述步骤中展开后的方向上进行强制快速冷却至100℃ 使用从集管喷射的冷却水，其一个或多个安装在条带的长度方向上; 使用高温热源在干燥器（12）的快速冷却步骤中快速冷却的带材表面上的干燥水分的步骤; 以及在再生器（7）中在干燥步骤中干燥的条带的回收步骤。
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