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    • 12. 发明授权
    • 연주기 몰드 테이퍼 측정기 영점교정장치
    • 用于校准铸造装置模具锥度测量仪零点的设备
    • KR100821132B1
    • 2008-04-11
    • KR1020010070552
    • 2001-11-13
    • 주식회사 포스코
    • 강희수김용환
    • B22D11/16
    • 본 발명은 연주기 몰드 테이퍼 측정기의 영점을 교정하기 위한 장치에 관한 것으로서, 본체를 지지하는 교정기 베이스와, 상기 교정기 베이스의 좌우측에 길이방향으로 형성되는 좌우측 가이드레일과, 상기 좌우측 가이드 레일을 따라 전후로 이동하는 좌우측 가이드와, 상기 좌우측 가이드의 상측에 각각 구비되는 좌우측 프레임과, 상기 좌우측 프레임 사이에 체결되는 안내봉과, 상기 안내봉에 체결되어 테이퍼 측정기의 위치를 잡아주는 행거와, 상기 행거에 연결되어 테이퍼 측정기의 측정위치를 고정하는 조정고리와, 상기 석정반(石井盤)을 지지하고 높이레벨을 조정하도록 레벨조정기를 하단 모서리에 각각 구비하는 정반 베이스와, 상기 석정반(石井盤)의 일측면에 밀착되는 테이퍼 측정기를 측면에서 잡아주도록 우측 프레임의 일측에 장착되는 클램프를 포함한다.
      본 발명에 의하면, 교정 오차 최소화로 슬라브 품질 및 조업 생산성의 향상을 가져오고, 특히 교정 작업자의 숙련도에 따라 발생하는 측정오차를 해소하여 테이퍼 측정기의 신뢰성을 확보하게 되어 연주조업(連珠操業)의 안정화를 이룰 수 있다.
      테이퍼 측정기, 영점교정장치, 연주기 몰드
    • 13. 发明公开
    • 몰리브덴강의 제조방법
    • 防止三氧化钼(MOO3)蒸发的方法
    • KR1020030050698A
    • 2003-06-25
    • KR1020010081204
    • 2001-12-19
    • 주식회사 포스코
    • 김용환
    • C21C5/52
    • Y02P10/216
    • PURPOSE: A method for adding a material comprising calcium oxide (CaO) or magnesium oxide (MgO) to molybdenum trioxide (MoO3) to prevent evaporation of molybdenum trioxide (MoO3) used in steelmaking process is provided. CONSTITUTION: In a method for suppressing evaporation of MoO3 by mixing MoO3 raw material with one or more CaO contained materials or MgO contained materials, thereby forming CaMoO4 or MgMoO4, the method is characterized in that evaporation loss of MoO3 is reduced by controlling a weight ratio of the CaO or MgO and MoO3 as in the following relational expressions during mixing of the CaO or MgO and MoO3: relational expressions: 0.38>weight of CaO/weight of MoO3>(100%-actual yield of MoO3 at an ordinary operation (%))/100x0.38, 0.28>weight of MgO/weight of MoO3>(100%-actual yield of MoO3 at an ordinary operation (%))/100x0.28, wherein the CaO contained materials or MgO contained materials are any one powder selected from CaO-SiO2 based flux, CaO-Al2O3 based flux, CaO or MgO contained waste slag, CaO or MgO contained steelmaking dust and dolomite (CaO-MgO), and evaporation loss of MoO3 is reduced by injecting compression molded material between electric furnace initial operation and heat booster after compression molding the CaO contained materials or MgO contained materials together with the MoO3 power.
    • 目的:提供将含有氧化钙(CaO)或氧化镁(MgO)的材料添加到三氧化钼(MoO 3)中以防止在炼钢过程中使用的三氧化钼(MoO 3)蒸发的方法。 构成:在通过将MoO 3原料与一种或多种含CaO物质或含MgO材料混合来抑制MoO 3的蒸发的方法中,由此形成CaMoO 4或MgMoO 4,其特征在于通过控制MoO 3的重量比 的CaO或MgO和MoO 3,如CaO或MgO和MoO 3的混合时的关系式:关系式:CaO的重量/ MoO 3的重量>(通常的MoO 3的100%实际收率(% ))/ 100×0.38,0.28重量%的MgO / MoO 3的重量(通常的操作下的100%的MoO 3的收率(%))/ 100×0.28,其中含CaO的材料或含MgO的材料是任何一种 选自CaO-SiO2基助熔剂,CaO-Al2O3基助熔剂,CaO或MgO的废渣,含有炼钢粉尘和白云石(CaO-MgO)的CaO或MgO,MoO3的蒸发损失通过在电 炉初始运行和加热 在含有CaO的材料或包含MgO的材料与MoO3功率一起压缩成型后,增压剂。
    • 14. 发明公开
    • 고니켈 함유 용강의 탈류 방법
    • 含镍高锰钢的脱硫方法
    • KR1020020045317A
    • 2002-06-19
    • KR1020000074738
    • 2000-12-08
    • 주식회사 포스코
    • 김용환변선민
    • C21C7/00
    • PURPOSE: A desulfurization method for high nickel containing molten steel is provided to remove sulfur in molten steel to a target concentration in a short period of time without desulfurization in ladle furnace or preliminary desulfurization treatment of molten pig iron. CONSTITUTION: The method includes the steps of decarburization and dephosphorization of high nickel containing molten steel and then maintaining the temperature of the molten steel higher than 1550°C and S content in the molten steel less than 0.008%; injection of a heat elevation agent to the molten steel in VOD until temperature of the molten steel approach up to 1700°C and then bottom bubbling of Ar gas in vacuum atmosphere of less than 70 mbar while injecting oxygen for 20-30 minutes; conducting Al-deoxidation in vacuum atmosphere until dissolved oxygen concentration in the molten steel approach 20 ppm and then secondary bottom bubbling of Ar gas while pouring quicklime for basicity and slag adjustment; and desulfurization for 20-40 minutes.
    • 目的:提供高含镍钢水的脱硫方法,在钢包炉中进行脱硫或熔融生铁的初步脱硫处理,在短时间内将钢水中的硫除去至目标浓度。 构成方法:该方法包括高含镍钢液的脱碳和脱磷,然后保持钢水温度高于1550℃,钢水S含量小于0.008%。 将注射剂注入到VOD中的钢水中,直到钢水温度达到1700℃,然后在小于70毫巴的真空气氛中氩气底部鼓泡,同时注入氧气20-30分钟; 在真空气氛中进行Al脱氧,直至钢水中的溶解氧浓度达到20ppm,然后再次生成Ar气,同时倾注生石灰进行碱化和渣调整; 脱硫20-40分钟。
    • 15. 发明公开
    • 고티타늄 첨가 스테인레스강 연속 주조시의 침지노즐 막힘방지방법
    • 高钛不锈钢连续铸造中预防喷淋喷嘴的方法
    • KR1020020023584A
    • 2002-03-29
    • KR1020000055978
    • 2000-09-23
    • 주식회사 포스코
    • 김용환안병용
    • B22D11/10
    • B22D11/108C21C5/005
    • PURPOSE: A method for preventing clogging of a submerged nozzle in continuous casting of high titanium added stainless steel is provided which fundamentally prevents clogging of the submerged nozzle when continuously casting stainless steel. CONSTITUTION: In a method for preventing clogging of a submerged nozzle injecting molten steel into a mold when continuously casting stainless steel to which high content of titanium is added, the method for preventing clogging of a submerged nozzle in continuous casting of high titanium added stainless steel comprises the steps of forming slag formed in molten steel finishing the decarburization step in a refining furnace into second slag through double slag method; deoxidizing the molten steel by injecting aluminum having a concentration of 100 to 300 ppm after the step of forming the second slag; and injecting a high content of titanium into the molten steel that is tapped into a ladle after the step of deoxidizing the molten steel.
    • 目的:提供一种在连续铸造不锈钢的情况下防止浸入式喷嘴堵塞连续铸造高钛添加不锈钢的方法,从根本上防止浸入式喷嘴堵塞。 构成:在连续铸造添加了高含量钛的不锈钢的情况下,防止将钢水注入模具中的浸没喷嘴堵塞的方法,防止浸入式喷嘴在高钛添加不锈钢的连续铸造中堵塞的方法 包括以下步骤:通过双渣法将精炼炉中脱碳步骤中形成的炉渣形成第二炉渣; 在形成第二炉渣的步骤之后,通过注入浓度为100〜300ppm的铝来对钢水进行脱氧; 并且在脱硫钢水步骤之后,将高含量的钛注入钢水中,该钢水被浸入钢包中。