• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An alloy comprising, by weight, 0,1-0,6% C, up to 2% Si, 5-15% Mn, 5-15% Cr, 5-13% Ni, 1-3% V, and at least one of up to 1% Mo and up to 2% Nb, the balance being substantially Fe and inevitable impurities. The alloy has an outstanding non-magnetic property of up to about 1.004 in magnetic permeability and high hardness of above about 215 in Vickers hardness and is useful for electro- magnetic stirrer rolls for continuous casting equipment.
    公开号:SU1322985A3
    申请号:SU823497984
    申请日:1982-10-11
    公开日:1987-07-07
    发明作者:Хираиси Хисаси；Ямаками Есиаки；Синтани Атсунобу
    申请人:Кубота Лтд (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to meta-alurgy, in particular to non-metallic alloys used for the manufacture of stick-using tools for the continuous casting of steel,
    The aim of the invention is to reduce the magnetic permeability while maintaining a hardness level of at least 215 units. on Vickers non-magnetic alloy,
    The content of components in the proposed alloy due to the following: tsim.
    Carbon is a useful element for the formation of an austential structure, which gives the alloy non-magnetic properties, and is also necessary for obtaining increased hardness. If the carbon content is less than 0.1 May,%, its effectiveness in increasing hardness is low. An excess of carbon leads to a decrease in hardness and an increase in permeability through coarse carbides, therefore the carbon content should not exceed 0.6 wt.%.
    Silicon, which is used as a scavenger, also serves as a ferrite forming element and increases magnetic permeability, if present in large quantities. In order to avoid undesirable effects, the silicon content should not exceed 1 wt.%.
    Manganese is important for the alloy as a deoxidizing and desulfurizing element, as well as an element contributing to the formation of an austenitic structure. In order to stabilize the austenite phase, it is desirable that the amount of manganese, and in the alloy, not less than 5 wt.%. With an excessive amount of manganese, the alloy is more susceptible to oxidation at high temperatures, and in addition, its hardness decreases, therefore the upper limit of the content of Marglich HI- must exceed 15 mag.,%,
    Chromium gives the alloy a higher antioxidant capacity and strength, so that the efficiency of chromium is complete, its content in the alloy should beat at least 5 wt.%. At an elevated: -, chromium content, which forms the fergate phase, makes the austenitic phases unstable.
    five
    0
    five
    Therefore, it is desirable that the chromium content does not exceed 15 wt.%,
    For the formation and stabilization of the austenitic phase, the nickel content in the alloy must be at least 5 May. iS oh) s nickel content leads to a decrease in hardness, so the upper limit of nickel content should be no more than 13 wt.%.
    Vanadium contributes to a fine-grained structure, which increases strength. In addition, vanadium is hard due to extra-carbides. This element does not give the desired effect when the content is less than wt.%. the efficiency does not increase; the mgkitna permeability1 of the alloy increases dramatically if the content of van l exceeds 3 mass%.
    Ms libden and niobium increase hardness. However, these ferrite structures, if used in large quantities, break the crust (the strength of the austenitic phase. The molybdenum content should not exceed 1 wt.% And the niobium content 2 wt.%.
    Example. Various compositions of the proposed alloy are subjected to heat treatment for solid solution according to the following mode: holding at 1100 ° C for 3 h, cooling in water. Magnetic permeability is measured by a Förster sensor on an apparatus for determining magnetic permeability. Hardness is measured on a Vickers instrument with a load of 10 kg.
    The compositions and properties of the proposed and known alloys are given in the table,
    As follows from the above data, the trans-alloy non-magnetic alloy provides, in comparison with the known, a reduction in magnetic permeability by 0.003-0.007 while maintaining a hardness level of 215 U, according to Vickers.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    Nonmagnetic alloy containing Q iron, carbon, silicon, manganese, hrog--., Nickel, vanadium, at least one metal from the group including molybdenum and niobium, that is, , with the goal of i-; magnetic permeability while maintaining a hardness level of at least 215 units. according to Vickers, ok contains compites in the following ratio, May.%:
    0
    0
    Sost “you are an experienced spl“ m contain the compo tm, koranecTW) which is quiet and prvdatgvvvv pradvpi.
    VShPI Order 2884/59
    Random polygons pr-tie, Uzhgorod, st. Project, 4
    At least one metal from the group including
    molybdenum0,4-0,6
    niobium 1.5 iron Else
    Circulation 604 Subscription
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    SU885333A1|1981-11-30|Steel
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    SU952996A1|1982-08-23|Composition of steel
    SU1139766A1|1985-02-15|Cast iron
    SU1337437A1|1987-09-15|Steel
    SU1341240A1|1987-09-30|Steel
    同族专利:
    公开号 | 公开日
    FI823419L|1983-04-15|
    JPS5864362A|1983-04-16|
    EP0077079B1|1985-09-11|
    AU535205B2|1984-03-08|
    CA1198912A|1986-01-07|
    EP0077079A3|1983-09-21|
    FI73470C|1987-10-09|
    ZA826625B|1983-07-27|
    US4441926A|1984-04-10|
    DE3266215D1|1985-10-17|
    FI73470B|1987-06-30|
    AU8802882A|1983-05-12|
    EP0077079A2|1983-04-20|
    FI823419A0|1982-10-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1032296B|1952-08-22|1958-06-19|East Hecla Works|Use of an austenitic steel alloy as a material for non-magnetic objects of high strength and yield strength|
    US3017266A|1960-06-02|1962-01-16|United Steel Companies Ltd|Austenitic steel and articles made therefrom|
    FR1299535A|1961-04-12|1962-07-27|Universal Cyclops Steel Corp|Ferrous alloys and articles obtained from these alloys|
    US3151979A|1962-03-21|1964-10-06|United States Steel Corp|High strength steel and method of treatment thereof|
    US3366472A|1963-12-31|1968-01-30|Armco Steel Corp|Stainless steel|
    SE324904C|1967-11-27|1977-11-17|Bofors Ab|SEPARATION HARDENING AUSTENITIC STEEL|
    US3574605A|1968-06-24|1971-04-13|Albert M Hall|Weldable,nonmagnetic austenitic manganese steel|
    SE343892B|1969-02-10|1972-03-20|Bofors Ab|
    JPS497117A|1972-05-12|1974-01-22|WO1984001175A1|1982-09-15|1984-03-29|Vickers Australia Ltd|Abrasion wear resistant steel|
    US5092393A|1989-03-14|1992-03-03|Nippon Steel Corporation|Process for producing cold-rolled strips and sheets of austenitic stainless steel|
    US5242655A|1990-02-26|1993-09-07|Sandvik A.B.|Stainless steel|
    JP5667504B2|2011-04-14|2015-02-12|日本高周波鋼業株式会社|Nonmagnetic stainless steel|
    BR112016029291A2|2014-06-16|2017-08-22|Abb Schweiz Ag|non-magnetic steel frame, cast metal vessel and electromagnetic stirrer or electromagnetic brake|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP56163721A|JPS5864362A|1981-10-14|1981-10-14|High hardness nonmagnetic alloy|
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