公开(公告)号：KR100457235B1

公开(公告)日：2004-11-16

申请号：KR1020010065153

申请日：2001-10-22

Applicant: 재단법인 포항산업과학연구원 ,  철강융합신기술연구조합 ,  주식회사 세아창원특수강 ,  주식회사 포스코

Inventor： 남궁정 ,  김문철

IPC: B22D7/10

Abstract: PURPOSE: A casting method of large stainless steel ingot is provided to reduce casting defects inside the steel ingot considering solidification characteristics of the stainless steel ingot during the solidification process of the steel ingot after injecting molten steel into a steel ingot mold. CONSTITUTION: The casting method of large stainless steel ingot (2) comprises the processes of manufacturing a mixed heat generating and reserving material (8) by mixing metal aluminum powder that is a heat generating source with porous thermal insulating material (9) as a heat generating and reserving material supplied onto the surface of a steel ingot hot-top (3) after filling molten steel into mold when casting a large stainless steel ingot; coating the manufactured mixed heat generating and reserving material on the surface of the molten steel filled into the mold (1); coating the porous thermal insulating material (9) on the mixed heat generating and reserving material; coating the mixed heat generating and reserving material (8) on the porous thermal insulating material; and coating the porous thermal insulating material on the mixed heat generating and reserving material again so that heat generating and reserving effects of the mixed heat generating and reserving material are extended.

Abstract translation: 目的：考虑到钢锭在将钢水注入钢锭模后凝固过程中不锈钢锭的凝固特性，提供了一种大型不锈钢锭的铸造方法，以减少钢锭内部的铸造缺陷。 构成：大型不锈钢锭（2）的铸造方法包括通过将作为发热源的金属铝粉与多孔绝热材料（9）混合作为热量来制造混合发热和储存材料（8）的过程 当铸造大型不锈钢锭时，在将钢水充入铸模之后，产生并储存供应到钢锭热顶部（3）的表面上的材料; 将所制造的混合发热保存材料涂覆在填充到模具（1）中的钢水表面上; 将多孔绝热材料（9）涂覆在混合发热和储存材料上; 将混合发热保存材料（8）涂布在多孔绝热材料上; 再将多孔绝热材料涂布在混合发热保存材料上，使混合发热保存材料的发热保存效果延长。

公开(公告)号：KR100446684B1

公开(公告)日：2004-09-01

申请号：KR1020020051930

申请日：2002-08-30

Applicant: 주식회사 포스코 ,  철강융합신기술연구조합 ,  재단법인 포항산업과학연구원 ,  주식회사 포스콘

Inventor： 이기범 ,  민춘기 ,  노영훈 ,  김중구 ,  오동근 ,  류창우

IPC: H04L12/00

Abstract: PURPOSE: A profibus unit with an input/output one body type is provided to install an input and output unit and a power unit in one unit. CONSTITUTION: A 24V power unit(4) receives 24 voltages from the outside, and generates a 5V power for driving a profibus unit. An input and output process/connection unit(8) processes data transmitted and received from a profibus network as discrete output data and analog output data, and outputs the discrete output data and the analog output data to an external terminal block. The input and output process/connection unit(8) processes discrete input data and analog input data inputted from the external terminal block, and transmits the processed data to a CPU(6).

Abstract translation: 目的：提供一个具有输入/输出一体型的Profibus单元，用于将输入和输出单元以及电源单元安装在一个单元中。 构成：24V电源装置（4）从外部接收24个电压，并产生用于驱动Profibus单元的5V电源。 输入和输出处理/连接单元（8）处理作为离散输出数据和模拟输出数据从Profibus网络发送和接收的数据，并将离散输出数据和模拟输出数据输出到外部端子块。 输入和输出处理/连接单元（8）处理从外部端子块输入的离散输入数据和模拟输入数据，并且将处理后的数据发送到CPU（6）。

公开(公告)号：KR1020040056249A

公开(公告)日：2004-06-30

申请号：KR1020020082824

申请日：2002-12-23

Applicant: 주식회사 포스코 ,  철강융합신기술연구조합 ,  재단법인 포항산업과학연구원 ,  주식회사 포스코건설

Inventor： 강영훈 ,  정희돈

IPC: C21B7/10

CPC classification number: C21B7/106

Abstract: PURPOSE: A device and method for cooling hearth bottom of blast furnace are provided to minimize deformation of metal case on the circumference of the hearth bottom of the blast furnace by uniformly maintaining temperature distribution on the hearth bottom of the blast furnace. CONSTITUTION: The device comprises a lengthwise cooling pipe(10) installed at a middle point of the hearth bottom of the blast furnace; a plurality of crosswise cooling pipes(11) communicated with each other and integrally connected to the lengthwise cooling pipe; and a vertical directional cooling pipe(12) which is installed at a middle point of the lengthwise cooling pipe in such a way that the vertical directional cooling pipe is communicated with the lengthwise cooling pipe, and a vertical direction of which corresponds to a central line of the blast furnace so that cooling water is flown in the lengthwise cooling pipe and the vertical directional cooling pipe, and cooling water flows out through the crosswise cooling pipes, wherein flow rate control valves(11a) for controlling flow rate of cooling water are respectively installed at cooling water inlet and cooling water outlet of the lengthwise cooling pipe, the crosswise cooling pipes and the vertical directional cooling pipe, and wherein diameter of the lengthwise cooling pipe is the same as that of the vertical directional cooling pipe, and diameter of the crosswise cooling pipes is less than that of the lengthwise cooling pipe and the vertical directional cooling pipe.

Abstract translation: 目的：提供一种用于冷却高炉炉底的装置和方法，以通过均匀地保持高炉底部的温度分布来最小化高炉炉底底部的金属外壳的变形。 构成：该装置包括安装在高炉炉底底部的中点的纵向冷却管（10） 多个横向冷却管道（11）彼此连通并与纵向冷却管道一体连接; 以及垂直方向冷却管（12），其安装在纵向冷却管的中点处，使得垂直方向冷却管与纵向冷却管连通，并且其垂直方向对应于中心线 使冷却水在纵向冷却管和垂直方向冷却管中流动，冷却水通过横向冷却管流出，其中分别控制冷却水的流量的流量控制阀（11a） 安装在纵向冷却管，横向冷却管和垂直方向冷却管的冷却水入口和冷却水出口处，其中纵向冷却管的直径与垂直方向冷却管的直径相同， 横向冷却管小于纵向冷却管和垂直方向冷却管。

公开(公告)号：KR1020040056100A

公开(公告)日：2004-06-30

申请号：KR1020020082644

申请日：2002-12-23

Applicant: 철강융합신기술연구조합 ,  재단법인 포항산업과학연구원 ,  주식회사 세아창원특수강 ,  주식회사 포스코

Inventor： 정재영 ,  박재철 ,  마봉열

IPC: C22C38/12

Abstract: PURPOSE: A high speed tool steel containing trace of cobalt is provided which controls hardness according to hardening temperature by controlling Co content and improves hardness by adding Si at the same time, and a method for manufacturing the same is provided. CONSTITUTION: The high hardness high speed tool steel containing trace of cobalt by controlling Co and Si contents comprises 0.75 to 1.1 wt.% of C, 0.1 to 1.0 wt.% of Si, 0.5 wt.% or less of Mn, 3.7 to 4.5 wt.% of Cr, 0.30 wt.% or less of Ni, 0.3 to 0.8 wt.% of Co, 4.5 to 5.5 wt.% of Mo, 5.5 to 6.8 wt.% of W, 1.7 to 2.2 wt.% of V, 0.6 wt.% or less of Cu and a balance of Fe and other inevitable impurities, wherein the high speed tool steel comprises 0.32 to 1.0 wt.% of Si, and wherein the high speed tool steel has 64 or more of Rockwell hardness. The method for manufacturing the high hardness high speed tool steel containing trace of cobalt by controlling Co and Si contents comprises the process of performing hot working on the homogenization treated steel slab by homogenization treating a steel slab comprising 0.75 to 1.1 wt.% of C, 0.1 to 1.0 wt.% of Si, 0.5 wt.% or less of Mn, 3.7 to 4.5 wt.% of Cr, 0.30 wt.% or less of Ni, 0.3 to 0.8 wt.% of Co, 4.5 to 5.5 wt.% of Mo, 5.5 to 6.8 wt.% of W, 1.7 to 2.2 wt.% of V, 0.6 wt.% or less of Cu and a balance of Fe and other inevitable impurities at a temperature of 1,100 to 1,150 deg.C.

Abstract translation: 目的：提供含有痕量钴的高速工具钢，其通过控制Co含量来控制硬度，同时通过加入Si来提高硬度，并提供其制造方法。 构成：通过控制Co和Si含量，含有痕量钴的高硬度高速工具钢包含C：0.75〜1.1％，Si：0.1〜1.0％，Mn：0.5％（重量）以下，3.7〜4.5 Cr的重量％，Ni的0.30重量％或更少，Co的0.3至0.8重量％，Mo的4.5至5.5重量％，W的5.5至6.8重量％，V的1.7至2.2重量％ ，0.6重量％以下的Cu和余量的Fe等不可避免的杂质，其中高速工具钢含有0.32〜1.0重量％的Si，其中高速工具钢的洛氏硬度为64以上。 通过控制Co和Si含量来制造含有痕量钴的高硬度高速工具钢的方法包括对均质处理的钢板进行热处理，通过均化处理含有0.75-1.1重量％的C的钢坯， 0.1〜1.0重量％的Si，0.5重量％以下的Mn，3.7〜4.5重量％的Cr，0.30重量％以下的Ni，0.3〜0.8重量％的Co，4.5〜5.5重量％ 温度为1100〜1150℃，Mo为5.5〜6.8重量％，V为1.7〜2.2重量％，Cu为0.6重量％以下，余量由Fe和其他不可避免的杂质构成。

公开(公告)号：KR1020040056099A

公开(公告)日：2004-06-30

申请号：KR1020020082643

申请日：2002-12-23

Applicant: 철강융합신기술연구조합 ,  재단법인 포항산업과학연구원 ,  주식회사 세아창원특수강 ,  주식회사 포스코

Inventor： 이종렬 ,  조윤현

IPC: C02F11/00 ,  C02F11/12

Abstract: PURPOSE: A pretreatment apparatus for high efficient dehydration of sludge is provided which shortly concentrates sludge even when sludge particles are small, or sludge density is low and substantially improves dehydration efficiency of sludge by enabling high efficiency concentration of sludge even in a small sized dehydrator. CONSTITUTION: The pretreatment apparatus(1) comprises a mixing tank for receiving sludge to be treated from precipitation tank(100) and mixing sludge with sulfuric acid and inorganic coagulant; a sulfuric acid supply tank(12) for supplying sulfuric acid for adjusting pH into the mixing tank; a coagulant supply tank(20) for supplying inorganic coagulant into the mixing tank; a thickener(30) for concentrating the sludge by remaining sludge discharged from the mixing tank for a certain time, supplying concentrated sludge to dehydrator(200) and discharging supernatant to wastewater treating facility(250); and a controller(70) for controlling quantities of sludge, sulfuric acid and inorganic coagulant flown in the mixing tank so that controlled quantities of the sludge, sulfuric acid and inorganic coagulant are mixed, and automatically controlling the thickener so that concentrated sludge is supplied to the dehydrator by concentrating sludge in the thickener.

Abstract translation: 目的：提供一种高效脱水污泥的预处理装置，即使在污泥颗粒小，污泥密度低的情况下也能即时浓缩污泥，即使在小型脱水机中也能实现污泥的高效浓缩，从而大大提高污泥的脱水效率。 构成：预处理装置（1）包括：用于从沉淀罐（100）接收待处理污泥并将污泥与硫酸和无机凝结剂混合的混合槽; 硫酸供应罐（12），用于供应用于将pH调节到混合罐中的硫酸; 用于向混合罐供给无机凝结剂的凝结剂供应罐（20） 用于通过将从所述混合罐排出的残留污泥一定时间浓缩所述污泥的增稠剂（30），向脱水器（200）供给浓缩污泥并向上述废水处理设备（250）排出上清液; 以及控制器（70），用于控制在混合罐中流动的污泥，硫酸和无机凝结剂的量，从而混合污泥，硫酸和无机凝结剂的受控量，并自动控制增稠剂，使浓缩污泥供应至 脱水器通过将污泥浓缩在增稠剂中。

公开(公告)号：KR100428890B1

公开(公告)日：2004-04-29

申请号：KR1020010082979

申请日：2001-12-21

Applicant: 재단법인 포항산업과학연구원 ,  철강융합신기술연구조합 ,  주식회사 포스콘 ,  주식회사 포스코

Inventor： 이기범 ,  이진수 ,  한찬동

IPC: G05B19/05

Abstract: PURPOSE: A method for drawing a ladder diagram using a petri net is provided to form a PLC(Programmable logic Controller) program by converting a petri net to a ladder diagram. CONSTITUTION: A petri net is drawn by analyzing operations and states requested from a controlled system(S101). All activated places are obtained from input places connected to a normal arc and an enabling arc on the basis of input transition in the petri net(S102). All places which do not have tokens are obtained from the input places connected to a prohibition arc in the petri net(S103). Each state condition of the obtained places, conditional inputs and event inputs of the input transition are obtained(S106). The tokens are added to the corresponding place if the input transitions related to the conditional inputs of the corresponding place are started(S107,S108). The number of the activated transitions is obtained from the output transitions satisfying a starting condition connected to the normal arc of the corresponding place(S109). The tokens are removed from the corresponding place if the output transitions are started(S110,S111). A Boolean numerical expression for the corresponding place is obtained(S112). A ladder diagram is drawn by using the Boolean numerical expression for the corresponding place(S115).

Abstract translation: 目的：提供一种使用Petri网绘制梯形图的方法，通过将Petri网转换为梯形图来形成PLC（可编程逻辑控制器）程序。 构成：通过分析受控系统请求的操作和状态绘制Petri网（S101）。 根据Petri网中的输入转换，从连接到正常弧和使能弧的输入位置获得所有激活位置（S102）。 所有没有令牌的地方是从Petri网中与禁止弧相连的输入位置获得的（S103）。 获得所获得的地点的每个状态条件，条件输入和输入转变的事件输入（S106）。 如果与相应地点的条件输入相关的输入转换开始（S107，S108），则令牌被添加到相应的地方。 根据满足与对应地点的正常圆弧连接的开始条件的输出转移，获得激活的转移的次数（S109）。 如果开始输出转换，则令牌从相应位置移除（S110，S111）。 获得相应位置的布尔数值表达式（S112）。 通过使用相应位置的布尔数值表达式绘制梯形图（S115）。

公开(公告)号：KR100409195B1

公开(公告)日：2003-12-12

申请号：KR1020000080012

申请日：2000-12-22

Applicant: 재단법인 포항산업과학연구원 ,  철강융합신기술연구조합

Inventor： 이기범 ,  정희돈 ,  김중구 ,  목임수

IPC: G06N7/02

Abstract: PURPOSE: A method for forecasting a durability of a PLC system using a fuzzy technique is provided to prevent a working line from being stopped caused by a PLC(Programmable Logic Controller) system and prevent an unexpected accident by judging a trouble grade of the PLC system exactly through an algorithm. CONSTITUTION: A trouble generation cycle of a PLC system is investigated(S1). A main cause is analyzed according to trouble places(S2). A main cause is analyzed according to trouble generations(S3). A main cause is analyzed according to trouble units(S4). The analyzed data are collected, and a database is constructed using the collected data(S5). A standard table with respect to a replacing time of each unit is prepared using the database(S6). A fuzzy forecast algorithm is developed by applying the data(S7). A life span of the PLC system is forecasted by applying the fuzzy forecast algorithm to the PLC system(S8).

Abstract translation: 目的：提供一种使用模糊技术预测PLC系统耐用性的方法，以防止由PLC（可编程逻辑控制器）系统导致的工作线路停止，并通过判断PLC系统的故障等级来防止意外事故 完全通过算法。 构成：调查PLC系统的故障产生周期（S1）。 根据故障地点（S2）分析一个主要原因。 根据故障世代分析主要原因（S3）。 根据故障单元（S4）分析一个主要原因。 收集分析的数据，并使用收集的数据构建数据库（S5）。 使用数据库准备关于每个单元的更换时间的标准表（S6）。 通过应用数据开发模糊预测算法（S7）。 通过将模糊预测算法应用于PLC系统（S8）预测PLC系统的使用寿命。

公开(公告)号：KR100405514B1

公开(公告)日：2003-11-14

申请号：KR1020000082182

申请日：2000-12-26

Applicant: 재단법인 포항산업과학연구원 ,  철강융합신기술연구조합

Inventor： 박대규 ,  임춘성 ,  손진삼

IPC: F23G7/05

Abstract: PURPOSE: A method for burning waste oil of an emulsion phase and an apparatus for performing the same are provided to easily treat mixture containing wet having the emulsion phase while pressurizing COG gas. CONSTITUTION: An emulsion phase mixture(11) containing wet and impurities is collected in a reservoir(10). The first steam-heating type water/oil separating vessel(20) is connected to the reservoir(10). An oil removing apparatus(25) for separating waste oil from condensing water is attached to the steam-heating type water/oil separating vessel(20). The second steam-heating type water/oil separating vessel(50) is connected to a steam-heating type oil reservoir(30) which stores waste oil. An air pump(60) for conveying high pressurized oil is installed in the steam-heating type oil reservoir(30). The air pump(60) is connected to a cokes oven gas range(61) through an oil receiving nozzle formed on an air pipe of a COG gas supplying line.

Abstract translation: 目的：提供一种用于燃烧乳化相的废油的方法和用于执行该方法的设备，以在加压COG气体的同时容易地处理含有具有乳液相的湿混合物。 构成：将含有湿和杂质的乳液相混合物（11）收集在储存器（10）中。 第一蒸汽加热式水油分离容器（20）连接到储存器（10）。 用于从冷凝水中分离废油的除油装置（25）连接到蒸汽加热式水油分离容器（20）。 第二蒸汽加热式水油分离器（50）连接到储存废油的蒸汽加热式储油器（30）。 用于输送高压油的空气泵（60）安装在蒸汽加热式储油器（30）中。 气泵60通过形成在COG气体供应管线的气管上的油接收喷嘴连接到焦炭炉气体范围61。

公开(公告)号：KR100393673B1

公开(公告)日：2003-08-06

申请号：KR1020000049762

申请日：2000-08-25

Applicant: 재단법인 포항산업과학연구원 ,  철강융합신기술연구조합

Inventor： 위현곤

IPC: G01B11/02

Abstract: PURPOSE: An apparatus for measuring width and thickness is provided to accurately measure the width and thickness of an object by capturing the signals outputted from a CCD(Charge Coupled Device) camera as the unit of a frame and analyzing the image signals. CONSTITUTION: An apparatus for measuring width and thickness comprises a CCD camera(21) to pick up the image of the side of an object(22), a feed screw(24) to move the CCD camera upward and downward to the side of the object, an encoder(26) connected to the feed screw to measure the moving distance of the CCD camera, a frame grabber(27) to receive the output signal of the CCD camera and the output pulse of the encoder and to capture the output signals of the CCD camera by the unit of a frame, and an operating and controlling device(28) to calculate the width of the object by analyzing the images of the frames offered from the frame grabber.

Abstract translation: 目的：提供一种测量宽度和厚度的设备，通过捕获从CCD（电荷耦合器件）照相机输出的信号作为帧的单位并分析图像信号来精确测量物体的宽度和厚度。 用于测量宽度和厚度的设备包括：CCD摄像机（21），用于拾取物体（22）侧面的图像;进给螺杆（24），用于将CCD摄像机上下移动到 物体，连接到进给螺杆以测量CCD摄像机的移动距离的编码器（26），用于接收CCD摄像机的输出信号和编码器的输出脉冲并捕获输出信号的帧抓取器（27） 以及一个操作和控制装置（28），用于通过分析从图像采集器提供的帧的图像来计算对象的宽度。

公开(公告)号：KR1020030054394A

公开(公告)日：2003-07-02

申请号：KR1020010084536

申请日：2001-12-24

Applicant: 철강융합신기술연구조합 ,  재단법인 포항산업과학연구원 ,  주식회사 포스코 ,  (주)포스코켐텍

Inventor： 전웅 ,  이성영

IPC: C04B35/04 ,  C04B35/10

CPC classification number: C04B35/043 ,  C04B35/101 ,  C04B2111/28

Abstract: PURPOSE: Provided is a basic castable refractory, non-chrome castable refractory, which has no harmful materials, and high thermal shock resistance and corrosion resistance. CONSTITUTION: The non-chrome castable refractory comprises 15-25wt.% of MgO-Al2O3(spinel) materials with a size less than 1mm and more than 40wt.% of MgO-based materials with a size more than 1mm, wherein the spinel materials contain 20-30wt.% of MgO and 80-90wt.% of Al2O3.

Abstract translation: 目的：提供不含有害材料，耐热冲击性和耐腐蚀性的基础浇铸耐火材料，非铬浇铸耐火材料。 构成：非铬铸造耐火材料包括15-25重量％的尺寸小于1mm的MgO-Al2O3（尖晶石）材料和大于40重量％的尺寸大于1mm的MgO基材料，其中尖晶石材料 含有20-30重量％的MgO和80-90重量％的Al2O3。