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    • 93. 发明授权
    • Ferritic stainless steel plate with Ti and method for production thereof
    • 铁素体不锈钢板及其制造方法
    • US07494551B2
    • 2009-02-24
    • US10517886
    • 2003-06-16
    • Yoshihiro YazawaOsamu FurukimiYasushi Kato
    • Yoshihiro YazawaOsamu FurukimiYasushi Kato
    • C22C38/28C21D8/02
    • C22C38/004C21D2211/004C21D2211/005C22C38/44C22C38/50
    • A Ti-containing ferritic stainless steel sheet and a manufacturing method thereof include stainless steels being formed while a refining load is decreased and having a low yield strength which exhibits superior workability. The Ti-containing ferritic stainless steel sheet contains on mass percent basis: 0.01% or less of C; 0.5% or less of Si; 0.3% or less of Mn; 0.01% to 0.04% of P; 0.01% or less of S; 8% to 30% of Cr; 1.0% or less of Al; 0.05% to 0.5% of Ti; 0.04% or less of N, 8≦Ti/(C+N)≦30 being satisfied; and the balance being substantially Fe and incidental impurities, wherein a grain size number of ferrite grain is 6.0 or more, and an average diameter Dp of precipitation diameters, each being [(a long axis length of a Ti base precipitate+a short axis length thereof)/2], of the Ti base precipitates in the steel sheet is in the range of from 0.05 μm to 1.0 μm.
    • 含Ti的铁素体系不锈钢板及其制造方法包括不锈钢,同时精炼负荷降低,屈服强度低,显示出优异的加工性。 含钛铁素体系不锈钢板以质量%计,含有0.01%以下的C; 0.5%以下的Si; 0.3%以下的Mn; 0.01%〜0.04%P; 0.01%以下的S; 8%〜30%的Cr; 1.0%以下的Al; 0.05%〜0.5%的Ti; 0.04%以下的N,8 <= Ti /(C + N)<= 30满足; 余量基本上为Fe和杂质,其中铁素体晶粒的晶粒数为6.0以上,析出直径的平均直径Dp分别为[(Ti基析出物的长轴长度+短轴长度 )/ 2]在钢板中的Ti基析出物的量在0.05μm至1.0μm的范围内。
    • 99. 发明授权
    • Ferritic stainless steel plate excellent in deep drawability and
anti-ridging property and production method thereof
    • 铁素体不锈钢板具有优异的深冲性和抗皱性能及其制造方法
    • US6113710A
    • 2000-09-05
    • US269295
    • 1999-03-29
    • Yasushi KatoTakumi UjiroSusumu Satoh
    • Yasushi KatoTakumi UjiroSusumu Satoh
    • C21D9/48C21D8/04C22C38/00C22C38/18C22C38/24C22C38/26C22C38/28C22C38/54
    • C22C38/18C21D8/0405C22C38/24C22C38/26C22C38/28C21D8/0426
    • 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.gtoreq.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.degree. C. or lower, finishing rough hot rolling of the slab at a temperature range of 950.degree. C. or higher, and then carrying out hot finish-rolling.
    • PCT No.PCT / JP98 / 03469 Sec。 371 1999年3月29日第 102(e)1999年3月29日PCT PCT 1998年8月4日PCT公布。 公开号WO99 /​​ 07909 日期1999年2月18日本发明提供了一种改进深冲性和深冲压加工抗皱性能的铁素体不锈钢板及其制造方法。 本发明的实际构造是含有0.001〜0.015重量%的铁素体不锈钢板。 %C,不大于1.0wt。 %Si,不大于1.0wt。 %Mn,不大于0.05wt。 %P,不大于0.010重量% %S,8〜30wt。 %Cr,不大于0.08wt。 %Al,0.005〜0.015wt。 %N,不大于0.0080wt。 %O,不大于0.25wt。 %Ti,Ti / N> / = 12,和0.05〜0.10wt。 %(Nb + V),V / Nb为2〜5,如果需要,还含有选自不超过2.0重量%的一种或多种。 %Mo,不大于1.0wt。 %Ni,不大于1.0wt。 %Cu与选自0.0005至0.0030重量%的一种或多种。 %B,0.0007-0.0030wt。 %Ca和0.0005〜0.0030wt。 %Mg。 此外,在本发明的制造方法中,上述铁素体系不锈钢板是将由上述构成的钢坯加热至1170℃以下的温度范围, 在950℃以上的温度范围内进行热精轧。