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    • 55. 发明申请
    • TWO-PHASE STAINLESS STEEL
    • 两相不锈钢
    • WO1995027090A1
    • 1995-10-12
    • PCT/JP1995000647
    • 1995-04-04
    • SUMITOMO METAL INDUSTRIES, LTD.IGARASHI, MasaakiKONDO, KunioOGAWA, KazuhiroUEDA, MasakatsuMORI, Tomoki
    • SUMITOMO METAL INDUSTRIES, LTD.
    • C22C38/00
    • C22C38/44C22C38/001
    • A two-phase stainless steel which is a super two-phase stainless steel which is less susceptible to cracking upon execution of welding and has a good executing quality of welding and which can exhibit good stress corrosion cracking resistance and tenacity at welds. Accordingly, it is used in a wide range of fields as a material for heat exchangers making use of seawater, and machinery and instruments, structures, for which a quality of seawater resistance is required, pipes for various chemical plants, line pipes, oil well pipes and the like. The steel has a main feature in that it contains 2.0 % or less Si by weight, 2.0 % or less Mn by weight, 22.0 to 24.0 % Cr by weight, 4.5 to 6.5 % Ni by weight, 4.0 to 4.8 % Mo by weight, 0.001 to 0.15 % Al by weight, 0.25 to 0.35 % N by weight and the remainder of Fe and inevitable impurities, and has in index RVS of 7 or less for evaluation of the susceptibility to cracking upon execution of welding and an index PREW of more than 40 for pitting corrosion resistance.
    • 一种两相不锈钢,它是一种超级两相不锈钢,在执行焊接时不易开裂,具有良好的焊接执行质量,可显示良好的抗应力腐蚀开裂性和焊缝韧性。 因此,作为用于使用海水的热交换器的材料的广泛领域使用,需要耐海水性的机械和仪器,结构,各种化工厂的管道,管线管,油井 管道等。 该钢的主要特征在于,其含有2.0重量%以下的Si,2.0重量%以下的Mn,22重量%〜24.0重量%的Cr,4.5重量%〜6.5重量%的Ni,4.0重量%〜4.8重量% 0.001重量%至0.15重量%的Al,0.25重量%至0.35重量%的N,剩余的Fe和不可避免的杂质,并且具有7或更小的指数RVS用于评估在执行焊接时的开裂敏感性和更多的指数PREW 40以上耐点腐蚀性。
    • 56. 发明申请
    • H-STEEL MANUFACTURING METHOD
    • H钢制造方法
    • WO1995017269A1
    • 1995-06-29
    • PCT/JP1994002123
    • 1994-12-16
    • SUMITOMO METAL INDUSTRIES, LTD.KUSABA, Yoshiaki
    • SUMITOMO METAL INDUSTRIES, LTD.
    • B21B01/08
    • B21B1/088B21B1/0886
    • This invention relates to a method of manufacturing H-steel used for building. The method according to the present invention is used for the intermediate rolling of H-steel in a mill unit UT in which a universal roughing mill UR and a universal edger mill UE are arranged close to each other, characterized by pressing down free end portions of a flange by a horizontal roll of the UE with the width of the horizontal roll set smaller than that of a corresponding roll of the UR and with an outer surface of the flange held by a vertical roll of the UE, and pressing down the flange in the direction of the thickness thereof with the horizontal roll of the UE set width-variable and with a bore mold formed by the horizontal roll and vertical roll. This enables the buckling of the flange during the pressing of the flange in the widthwise direction thereof by the UE will to be prevented, and H-steel having a dimensional precision/comparable to that of welded H-steel to be manufactured by hot rolling.
    • 本发明涉及一种制造用于建筑的H型钢的方法。 根据本发明的方法用于轧制单元UT中的H钢的中间轧制,其中通用粗轧机UR和通用磨边机UE彼此靠近地布置,其特征在于, UE的水平卷轴的凸缘,水平卷轴的宽度小于UR的对应辊的宽度,并且凸缘的外表面由UE的垂直辊保持,并且将凸缘按压在 其厚度的方向与UE的水平辊宽度可变,并且具有由水平辊和垂直辊形​​成的孔模。 由此,能够防止在法兰沿其宽度方向按压法兰时法兰的弯曲,并且通过热轧制造具有与焊接H型钢的尺寸精度相当的尺寸精度的H型钢。