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    • 6. 发明申请
    • METHOD FOR PRODUCING MAGNESIUM ALLOY SHEET AND MAGNESIUM ALLOY COIL STOCK
    • 镁合金板和镁合金线圈生产方法
    • US20120244373A1
    • 2012-09-27
    • US13511898
    • 2010-11-15
    • Nobuyuki MoriYukihiro Oishi
    • Nobuyuki MoriYukihiro Oishi
    • B21B27/06C22C23/02
    • B21B3/00B21B38/006B21B2003/001B21B2267/12Y10T428/12333
    • There are provided a method for producing a magnesium alloy sheet having good press formability and a magnesium alloy coil stock obtained by coiling the magnesium alloy sheet. After a raw material sheet 1 composed of a magnesium alloy is preheated to 280° C. or less, the heated raw material sheet 1 is rolled with a reduction roll 3 and the obtained long rolled sheet is coiled. The surface temperature of the reduction roll 3 is set to be 230° C. or more and 290° C. or less. The preheating, rolling, and coiling are repeatedly performed in a continuous manner. By setting both the temperatures of the raw material sheet 1 and reduction roll 3 to be certain temperatures, the rolling property of the raw material sheet can be improved and the raw material sheet can be properly rolled in a continuous manner. In addition, a variation in temperature in the width direction of the reduction roll can be suppressed and uniform rolling can be performed, resulting in the production of a long magnesium alloy sheet. In this magnesium alloy sheet, working strain is sufficiently introduced by rolling and an increase in the size of crystal grains is suppressed. Thus, the magnesium alloy sheet has good press formability. Furthermore, a coil stock in which telescoping is not easily caused and that has good appearance is obtained.
    • 提供了一种制造具有良好压制成形性的镁合金板的方法和通过卷绕镁合金板而获得的镁合金线圈坯料。 将由镁合金构成的原料片1预热至280℃以下后,用还原辊3轧制被加热的原料片1,将所得的长卷材卷成。 还原辊3的表面温度设定为230℃以上290℃以下。 以连续的方式重复进行预热,轧制和卷取。 通过将原料片1和还原辊3的温度均设定为一定温度,能够提高原料片的卷曲性,并且可以连续地适当地卷曲原料片。 此外,可以抑制还原辊的宽度方向的温度变化,并且可以进行均匀的轧制,从而制造长的镁合金板。 在该镁合金板中,通过轧制充分地引入加工应变,并且抑制了晶粒尺寸的增加。 因此,镁合金板具有良好的压制成形性。 此外,获得了不容易引起伸缩并且具有良好外观的线圈架。
    • 10. 发明授权
    • Method for producing martensitic stainless steel pipe
    • 制造马氏体不锈钢管的方法
    • US08021502B2
    • 2011-09-20
    • US12314727
    • 2008-12-16
    • Mutsumi TanidaNobuyuki MoriKeiichi Nakamura
    • Mutsumi TanidaNobuyuki MoriKeiichi Nakamura
    • C21D9/14C21D8/10
    • C21D9/08C21D2211/008
    • A martensitic stainless steel pipe, which comprises specified quantities of C, Si, Mn, P, S, Cr, Ni, Al, N, Cu, Ti, V, Mo, Nb, B and Ca, and the balance being Fe and impurities, has satisfactory toughness at a high strength of 650 MPa or more by yield strength and also excellent hot workability. Therefore, it can be used as a high-strength martensitic stainless steel pipe for carbon dioxide gas corrosion resistant use, to be used in oil and/or gas well environments containing no hydrogen sulfide but carbon dioxide gas. This high-strength martensitic stainless steel pipe is an inexpensive martensitic stainless steel pipe, which does not require an addition of large quantities of expensive elements such as Ni and Mo, and moreover does not require the control of the content of P to a value less than 0.010% by mass.
    • 马氏体不锈钢管,其含有规定量的C,Si,Mn,P,S,Cr,Ni,Al,N,Cu,Ti,V,Mo,Nb,B和Ca,余量为Fe和杂质 在650MPa以上的高强度下,通过屈服强度和热加工性优异,具有令人满意的韧性。 因此,可用作耐高温二氧化碳气体的高强度马氏体不锈钢管,用于不含硫化氢或二氧化碳气体的油井和/或气井环境中。 这种高强度马氏体不锈钢管是廉价的马氏体不锈钢管,其不需要添加大量昂贵的元素如Ni和Mo,而且不需要将P的含量控制在较小的值 大于0.010质量%。