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    • 2. 发明公开
    • 딥드로잉성 및 내이차가공취성이 우수한 페라이트계스테인리스강판 및 그 제조방법
    • 具有优异的深度可拉伸性和耐二次加工性的脆性不锈钢板及其制造方法
    • KR1020030035972A
    • 2003-05-09
    • KR1020020065729
    • 2002-10-28
    • 제이에프이 스틸 가부시키가이샤
    • 야자와요시히로후루끼미오사무가또야스시오자끼요시히로
    • C22C38/18
    • C22C38/26C21D8/0405C21D8/0463C21D8/0473C22C38/002C22C38/004C22C38/24C22C38/28C22C38/32
    • PURPOSE: A cold rolled ferritic stainless steel sheet having excellent deep drawability, brittle resistance to secondary processing, compatibility with overcoating, and corrosion resistance suitable for use in outer panels and strengthening members of automobiles and the like is provided, and a method for making the cold rolled ferritic stainless steel sheet is provided. CONSTITUTION: The ferritic stainless steel sheet comprises about 0.01 percent by mass or less of carbon; about 1.0 percent by mass or less of silicon; about 1.5 percent by mass or less of manganese; about 11 to 23 percent by mass of chromium; about 0.06 percent by mass or less of phosphorous; about 0.03 percent by mass or less of sulfur; about 1.0 percent by mass or less of aluminum; about 0.04 percent by mass or less of nitrogen; about 0.0005 to 0.01 percent by mass of boron; about 0.3 percent by mass or less of vanadium; about 0.8 percent by mass or less of niobium and/or 1.0 percent by mass or less of titanium, wherein 18≤Nb/(C+N)+2(Ti/(C+N))≤60; and the balance being iron and unavoidable impurities, wherein the average crystal grain diameter is about 40 μm or less and the average surface roughness is about 0.3 μm or less. The method for making a ferritic stainless steel sheet comprises the steps of hot rolling a steel slab comprising about 0.01 percent by mass or less of carbon, about 1.0 percent by mass or less of silicon, about 1.5 percent by mass or less of manganese, about 11 to about 23 percent by mass of chromium, about 0.06 percent by mass or less of phosphorous, about 0.03 percent by mass or less of sulfur, about 1.0 percent by mass or less of aluminum, about 0.04 percent by mass or less of nitrogen, about 0.0005 to about 0.01 percent by mass of boron, about 0.3 percent by mass or less of vanadium, about 0.8 percent by mass or less of niobium and/or about 1.0 percent by mass or less of titanium, wherein 18≤Nb/(C+N)+2(Ti/(C+N))≤60, and the balance being iron and unavoidable impurities to form a hot rolled sheet; annealing the hot rolled sheet to form an annealed sheet; cold rolling the annealed sheet either once or at least two times with intermediate annealing to form a cold rolled sheet; and finish annealing and pickling the cold rolled sheet to form a pickled steel sheet containing crystal grains having an average crystal grain diameter of about 40 μm or less and has an average surface roughness of about 0.3 μm or less.
    • 目的:提供一种具有优良的深冲性,二次加工的耐脆性,与外涂层的兼容性以及适用于外板和汽车加固件等的耐腐蚀性的冷轧铁素体系不锈钢板, 提供冷轧铁素体不锈钢板。 构成:铁素体系不锈钢板的碳含量为0.01质量%以下, 约1.0质量%以下的硅; 约1.5质量%以下的锰; 约11〜23质量%的铬; 约0.06质量%以下的磷; 约0.03质量%以下的硫; 约1.0质量%以下的铝; 约0.04质量%以下的氮气; 约0.0005〜0.01质量%的硼; 约0.3质量%以下的钒; 约0.8质量%以下的铌和/或1.0质量%以下的钛,其中18≤Nb/(C + N)+2(Ti /(C + N))≤60; 余量为铁和不可避免的杂质,其中平均晶粒直径为约40μm以下,平均表面粗糙度为约0.3μm以下。 制造铁素体系不锈钢板的方法包括以下步骤:将含有约0.01质量%以下的碳,约1.0质量%以下的硅,约1.5质量%以下的锰,约 11〜23质量%的铬,约0.06质量%以下的磷,约0.03质量%以下的硫,约1.0质量%以下的铝,约0.04质量%以下的氮, 约0.0005〜约0.01质量%的硼,约0.3质量%以下的钒,约0.8质量%以下的铌和/或约1.0质量%以下的钛,其中,18≤Nb/(C + N)+2(Ti /(C + N))≤60,余量为铁和不可避免的杂质,形成热轧板; 对热轧板进行退火以形成退火板; 对退火板进行一次或至少两次冷轧,中间退火以形成冷轧板; 并且对冷轧板进行最终退火和酸洗以形成含有平均晶粒直径为约40μm以下且平均表面粗糙度为约0.3μm以下的晶粒的酸洗钢板。
    • 6. 发明授权
    • 딥드로잉성과 내리징성이 우수한 페라이트계 스테인레스강판 및 그 제조방법
    • 딥드로잉과과내징징우페페계계계계그그그그그법법법법법법법
    • KR100380833B1
    • 2003-04-18
    • KR1019997002897
    • 1998-08-04
    • 제이에프이 스틸 가부시키가이샤
    • 가또야스시우지로다꾸미사또스스무
    • C22C38/28
    • C22C38/18C21D8/0405C21D8/0426C22C38/24C22C38/26C22C38/28
    • The present invention provides a ferritic stainless steel plate improved in the deep drawability and the anti-ridging property at deep drawing work and the production technique thereof. The practical construction of the present invention is a ferritic stainless steel plate containing from 0.001 to 0.015 wt.% C, not more than 1.0 wt.% Si, not more than 1.0 wt.% Mn, not more than 0.05 wt.% P, not more than 0.010 wt.% S, from 8 to 30 wt.% Cr, not more than 0.08 wt.% Al, from 0.005 to 0.015 wt.% N, not more than 0.0080 wt.% O, not more than 0.25 wt.% Ti with Ti/N ≥ 12, and from 0.05 to 0.10 wt.% (Nb + V) with V/Nb being from 2 to 5, and, if necessary, further containing one or more kinds selected from not more than 2.0 wt.% Mo, not more than 1.0 wt.% Ni, and not more than 1.0 wt.% Cu together with one or more kinds selected from from 0.0005 to 0.0030 wt.% B, from 0.0007 to 0.0030 wt.% Ca and from 0.0005 to 0.0030 wt.% Mg. Furthermore, in the production method of the present invention, the above-described ferritic stainless steel plate is produced by heating the steel slab made up of the above-described components to a temperature range of 1170 DEG C or lower, finishing rough hot rolling of the slab at a temperature range of 950 DEG C or higher, and then carrying out hot finish-rolling.
    • 本发明提供一种深拉深加工时的深冲性和抗起皱性及其制造技术的铁素体系不锈钢板。 本发明的实际结构是铁素体不锈钢板,其含有0.001-0.015重量%的C,不超过1.0重量%的Si,不超过1.0重量%的Mn,不超过0.05重量%的P, 不多于0.010重量%的S,8-30重量%的Cr,不多于0.08重量%的Al,0.005-0.015重量%的N,不多于0.0080重量%的O,不多于0.25重量% %Ti与Ti / N& ge; 12和0.05-0.10重量%(Nb + V),V / Nb为2-5,并且如果需要还含有选自不超过2.0重量%Mo中的一种或多种,​​不超过 1.0重量%的Ni和不多于1.0重量%的Cu以及选自0.0005-0.0030重量%的B,0.0007-0.0030重量%的Ca和0.0005-0.0030重量%的Mg中的一种或多种。 此外,在本发明的制造方法中,上述铁素体系不锈钢板通过将由上述成分构成的钢坯加热至1170℃以下的温度范围来制造, 板坯在950℃或更高的温度范围内,然后进行热精轧。 <图像>