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    • 1. 发明申请
    • 고 청정 용강 제조 방법과 정련 장치
    • 高清洁钢铁生产方法和精炼装置
    • WO2013172613A1
    • 2013-11-21
    • PCT/KR2013/004222
    • 2013-05-13
    • 주식회사 포스코
    • 최자용한승민김선구이희호정상열서영종
    • C21C7/00
    • C21C7/00B22D1/00B22D11/116B22D11/118B22D41/00B22D41/08C21C7/0075C21C7/06C21C7/076Y02P10/242
    • 본 발명은 청정도가 우수한 용강을 제조하기 위한 방법과 정련장치에 관한 것으로, 특히 제강공정에서 연주공정의 전 공정에 걸쳐서 용강을 액적화하고 이를 슬래그에 낙하시켜 개재물을 정련하는 방법과 장치를 제공한다. 또한, 본 발명에서는 용강을 공급하는 용강 공급장치 및 상기 용강 공급장치에서 주입되는 용강을 수용하여 정련하는 용강 정련 장치를 포함하여 고 청정 용강을 제조하는 방법에서, 상기 용강 공급장치에서 용강 정련 장치로 용강을 주입하는 용강 주입 단계; 상기 주입된 용강을 용강 정련 장치에서 액적으로 형성하는 액적 형성 단계; 상기 액적화된 용강을 낙하시켜 슬래그를 통과시키는 슬래그 통과 단계; 및 상기 슬래그를 통과하는 동안 상기 액적화된 용강의 잔류 개재물이 제거되는 개재물 제거 단계를 포함하는 고 청정 용강 제조 방법을 제공한다.
    • 本发明涉及一种具有优异清洁度的钢水的制造方法和精制装置,更具体地说,提供了在连续铸造工序的预处理中,通过从钢水中形成液滴并将其滴入炉渣来精炼夹杂物的方法和装置 在炼钢过程中。 另外,本发明提供一种高清洁度钢水的制造方法,其特征在于,包括供给钢水的钢水供给装置和钢水供给装置的钢水精炼装置, 包括:钢水浇注步骤,其中钢水从钢水供应装置注入钢水精炼装置中; 在钢水精炼装置中,已投入的钢水形成液滴的液滴形成工序; 将已形成液滴的钢水落下以通过炉渣的渣渣通过工序; 以及夹杂物去除步骤,其中已经形成为液滴的钢水中的残留夹杂物在通过炉渣时被去除。
    • 3. 发明公开
    • 내산화성이 향상되는 페라이트계 스테인레스 광휘소둔냉연강판의 제조방법
    • 具有改善耐氧化性能的不锈钢轻质退火板的制造方法
    • KR1020020052737A
    • 2002-07-04
    • KR1020000082174
    • 2000-12-26
    • 주식회사 포스코
    • 김영호정상열
    • C21D1/74
    • PURPOSE: A method for manufacturing ferritic stainless steel bright annealing plates is provided to improve oxidation resistance by controlling cooling rate after cold rolling process. CONSTITUTION: In an annealing method of a cold rolled steel sheet comprising C 0.1 wt.% or less, Cr 10 to 20 wt.%, Ni 1.0 wt.% or less, N 0.1 wt.% or less, Si 1.0 wt.% or less, Mn 2.0 wt.% or less, Ti 0.5 wt.% or less, Nb 0.6 wt.% or less, Mo 2.0 wt.% or less, Cu 1.0 wt.% or less, a balance of Fe and other inevitable impurities at 900 to 120 0°C in a reductive atmosphere of hydrogen and nitrogen, the present invention is characterized in that when cooling the cold rolled steel sheet from annealing temperature to 300°C, the cooling rate of the cold rolled steel sheet is controlled to 20-30°C/sec.
    • 目的:提供一种制造铁素体不锈钢光亮退火板的方法,通过控制冷轧后的冷却速度来提高耐氧化性。 构成:在C为0.1重量%以下,Cr为10〜20重量%,Ni为1.0重量%以下,Ni为0.1重量%以下的冷轧钢板的退火方法中,Si为1.0重量% 以下,Mn 2.0重量%以下,Ti:0.5重量%以下,Nb:0.6重量%以下,Mo 2.0重量%以下,Cu:1.0重量%以下,余量由Fe和其他不可避免的 在氢和氮的还原气氛中在900〜120℃的杂质,本发明的特征在于,当将冷轧钢板从退火温度冷却至300℃时,控制冷轧钢板的冷却速度 至20-30℃/秒。
    • 4. 发明公开
    • 내식성이향상된오스테나이트계스테인레스강판의제조방법
    • 具有改善耐腐蚀性的奥氏体不锈钢冷轧钢板的明显退火方法
    • KR1020000019207A
    • 2000-04-06
    • KR1019980037182
    • 1998-09-09
    • 주식회사 포스코
    • 정상열김영호
    • C21D8/02C21D1/74
    • PURPOSE: A method for bright annealing of cold rolled steel sheet of austenite stainless is provided for improving the corrosion-resistance of the steel sheet without the decrease of brightness. CONSTITUTION: A cold rolled steel sheet of austenite stainless is bright annealed by cold rolling the steel sheet comprising carbon less than 0.1 percent by weight; chromium in a range of 10-20 percent by weight; nickel in a range of 5-12 percent by weight; nitrogen less than 0.1 percent by weight; silicon less than 1.0 percent by weight; manganese less than 2.0 percent by weight; titanium less than 0.5 percent by weight; niobium less than 0.6 percent by weight, molybdenum less than 2.0 percent by weight; copper less than 1.0 percent by weight; and iron and inevitable impurities being the balance, and annealing it under the reduction atmosphere wherein nitrogen is contained in amount of more than 25% and the dew point is below -60°C at a temperature of 1000-1250°C to form chromic nitrides onto the passive state coated film of the surface.
    • 目的:提供一种奥氏体不锈钢冷轧钢板的光亮退火方法,用于提高钢板的耐腐蚀性而不会降低亮度。 构成:将奥氏体不锈钢的冷轧钢板通过冷轧包含小于0.1重量%的碳的钢板进行光亮退火; 在10-20重量%的范围内的铬; 镍在5-12重量%的范围内; 氮少于0.1重量%; 硅小于1.0重量%; 锰小于2.0重量%; 钛小于0.5重量%; 铌小于0.6重量%,钼小于2.0重量%; 铜小于1.0重量%; 铁和不可避免的杂质为平衡物,并在还原气氛下退火,其中氮含量大于25%,露点低于-60℃,在1000-1250℃的温度下形成铬氮化物 到表面的被动状态涂膜上。
    • 9. 发明公开
    • 고 청정 용강 제조 방법과 정련 장치
    • 制造高纯度钢及其精制装置的方法
    • KR1020130127240A
    • 2013-11-22
    • KR1020120051019
    • 2012-05-14
    • 주식회사 포스코
    • 최자용한승민김선구이희호정상열
    • C21C7/00
    • C21C7/076B22D11/116B22D11/118B22D41/08C21C7/0075C21C7/06
    • The present invention relates to a high purity molten steel manufacturing method and a high purity molten steel refining apparatus, and, more specifically, to a method and an apparatus which make molten steel into liquid droplet and refine insertion by dropping the liquid droplet in slag. A method comprises a molten steel supply device supplying molten steel and a molten steel refining device containing and refining the molten steel which is supplied by the molten steel supply device for making high purity molten steel. A high purity molten steel manufacturing method comprises: a step for inputting molten steel from a molten steel supply unit to a molten steel refining device; a liquid droplet forming step for forming liquid droplet in a molten steel refining apparatus; a slag passing-through step for passing slag through by dropping the liquid-drop type molten steel; and an insertion removal step for removing remaining insertion in the liquid-drop type molten steel.
    • 本发明涉及一种高纯度钢水制造方法和高纯度钢水精炼装置,更具体地说,涉及一种通过将液滴滴入炉渣中而使钢液变成液滴并精细化插入的方法和装置。 一种包括供给钢水的钢水供给装置和钢水精炼装置,该钢水精炼装置含有由钢水供给装置供给的用于制造高纯度钢水的钢水。 高纯度钢水制造方法包括:将钢水从钢水供给单元输入到钢水精炼装置的工序; 用于在钢水精炼设备中形成液滴的液滴形成步骤; 通过滴落液滴型钢水使炉渣通过的炉渣通过步骤; 以及用于去除液滴型钢水中剩余插入的插入去除步骤。