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    • 74. 发明授权
    • 극저온 특성이 우수한 고 망간강의 제조방법
    • 高MN钢制造工艺
    • KR1019920004941B1
    • 1992-06-22
    • KR1019890020003
    • 1989-12-28
    • 주식회사 포스코재단법인 포항산업과학연구원
    • 김숙환유호천한재광
    • C21D7/00C21D8/00
    • In producing method for low temperature steel, the method is characterized by, its composition of 0.1-0.5 C, 0.02-1.5 Si, 16-35 Mn, 1-8 Al, 0.02-0.15 Ti, 0.05-0.15 Nb and at most 0.05 Cu, in wt.%, forming it by hot rolling at temperature of 900 deg.C and below under conditions of its integral reduction ratio of 60-90 % and finish temperature of 750-850 deg.C. In this method, Mn is a autenite forming element, Al has effects of promoting toughness and strength, Cu increases corrosion-resistance property, and Ti and Nb form fine distributed precipitates by controlled rolling. It can lowered manufacturing costs of low temperature steel by substituting cheap Mn and Al for expensive Ni and Cr.
    • 在低温钢的制造方法中,其特征在于,其组成为0.1-0.5℃,0.02-1.5Si,16-35Mn,1-8Al,0.02-0.15Ti,0.05-0.15Nb,最多为0.05 Cu,重量%,在其整体减速比为60-90%,最终温度为750-850℃的条件下,在900℃及以下的温度下通过热轧形成。 在这种方法中,Mn是一种成核元素,Al具有促进韧性和强度的作用,Cu增加了耐腐蚀性,而Ti和Nb通过控制轧制形成细分散的沉淀物。 通过用廉价的Mn和Al代替昂贵的Ni和Cr可以降低低温钢的制造成本。