STEEL PIPE FOR AIR BAG INFLATOR AND METHOD FOR PRODUCTION THEREOF
    1.
    发明公开
    STEEL PIPE FOR AIR BAG INFLATOR AND METHOD FOR PRODUCTION THEREOF 有权
    钢管用于生产安全气囊气体发生器和过程

    公开(公告)号:EP1816227A4

    公开(公告)日:2008-08-27

    申请号:EP05795706

    申请日:2005-10-24

    摘要: A steel pipe for an air bag inflator which has a high strength of a tensile strength of 900 MPa or more, preferably 1000 MPa or more, together with high toughness, and exhibits good burst resistance wherein no cracks develop in a burst test at -40˚C or lower is produced by a method comprising providing a raw steel pipe containing, in mass %, 0.05 to 0.20 % of C, 0.1 to 1.0 % of Si, 0.025 % or lower of P, 0.010 % or lower of S, 0.05 to 1.45 % of Cr, 0.10 % or less of Al, 0.02 % or less of Ti, and one or both of Ti and Mn satisfying 0.4 ≤ Mn + 40 X Ti ≤ 1.2, rapidly cooling the raw steel pipe from a temperature of Ac1 transformation temperature or higher, tempering the resultant steel pipe at a temperature lower than Ac1 transformation temperature, subjecting the tempered steel pipe to a cold working wherein a reduction of area is 65 % or less, and then subjecting the worked steel pipe to a stress relief annealing at a temperature lower than Ac1 transformation temperature. The L/T ratio of X ray integral intensity ratios of {110} face measured in the cross section perpendicular to the axis direction (L) and the cross section perpendicular to the periphery direction (T) of the above steel pipe is 50 or lass.

    TUBE D'ACIER POUR SYSTEME DE COUSSIN DE SECURITE GONFLABLE ET PROCEDE DE PRODUCTION ASSOCIE
    2.
    发明公开
    TUBE D'ACIER POUR SYSTEME DE COUSSIN DE SECURITE GONFLABLE ET PROCEDE DE PRODUCTION ASSOCIE 有权
    钢管用于生产气囊系统及工艺

    公开(公告)号:EP1637619A4

    公开(公告)日:2008-08-06

    申请号:EP04734119

    申请日:2004-05-20

    发明人: ARAI YUJI KONDO KUNIO

    摘要: L'invention concerne un tube d'acier haute résistance destiné à un système de coussin de sécurité gonflable qui comprend une composition chimique en pourcentage en poids selon laquelle les éléments suivants sont compris entre les valeurs suivantes: C: entre 0,05 et 0,20 %, Si: entre 0,1et 1,0 %, P: 0,025 % ou moins, S: 0,010 % ou moins, Cr: entre 0,05 et 1,0 %, Al: 0,10 % ou moins, Ti et/ou Mn: une ou des quantités satisfaisant aux conditions (1) Ti = 0,02 % et (2) 0,4 = Mn + 40 X Ti = 1,2; et en complément: Fe. La composition d'acier de l'invention peut contenir en outre (i) un ou plusieurs des éléments suivants: Mo: entre 0,05 et 0,50 %, Ni: entre 0,05 et 1,5 %, V: entre 0,01 et 0,2 %; et B: entre 0,0003 et 0,005 %; (ii) un ou plusieurs des éléments suivants: Cu: entre 0,05 et 0,5 %; et Nb: entre 0,003 et 0,1 %; et/ou (iii) un ou plusieurs des éléments suivants: Ca: entre 0,0003 et 0,01 %, Mg: entre 0,0003 et 0,01 %; et REM: entre 0,0003 et 0,01 %. L'invention concerne également un procédé de production dudit tube en acier qui consiste: à former un tube d'acier comprenant ladite composition; à écrouir ledit tube de manière à lui donner une forme prédéterminée; à chauffer le tube obtenu à une température de transformation Ac1 ou à une temperature supérieure; à procéder au refroidissement, puis au revenu du tube à une température de transformation Ac1 ou à une temperature inférieure.

    SEAMLESS STEEL PIPE FOR LINE PIPE AND METHOD FOR PRODUCING SAME
    4.
    发明公开
    SEAMLESS STEEL PIPE FOR LINE PIPE AND METHOD FOR PRODUCING SAME 有权
    无缝钢管管线管及其制造方法

    公开(公告)号:EP1918397A4

    公开(公告)日:2009-08-19

    申请号:EP06782899

    申请日:2006-08-22

    摘要: Disclosed is a seamless steel pipe for line pipes which is suitable for flowlines or risers since it has high strength, excellent toughness and good corrosion resistance even when it is formed thick. This seamless steel pipe for line pipes has a chemical composition consisting of, in mass%, 0.02-0.08% of C, not more than 0.5% of Si, 1.5-3.0% of Mn, 0.001-0.10% of Al, more than 0.4% and not more than 1.2% of Mo, 0.002-0.015% of N, 0.0002-0.007% of Ca and one or two of REM in total, and the balance of Fe and impurities. In the impurities, P is not more than 0.05%, S is not more than 0.005%, and O is not more than 0.005%. The seamless steel pipe for line pipes satisfies the following formula: 0.8 = [Mn] × [Mo] = 2.6 (wherein [Mn] and [Mo] represent values equivalent to respective contents of Mn and Mo in mass%).

    SEAMLESS STEEL PIPE FOR LINE PIPE AND METHOD FOR PRODUCING SAME
    9.
    发明公开
    SEAMLESS STEEL PIPE FOR LINE PIPE AND METHOD FOR PRODUCING SAME 有权
    NAHTLOSES STAHLROHRFÜRLEITUNGSROHR UND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号:EP1918398A4

    公开(公告)日:2009-08-19

    申请号:EP06782902

    申请日:2006-08-22

    摘要: Disclosed is a seamless steel pipe for line pipes which has high strength and stable toughness while exhibiting good sulfide corrosion cracking resistance over a temperature range from low temperature to room temperature. The seamless steel pipe has a chemical composition consisting of, in mass%, 0.03-0.08% of C, 0.05-0.5% of Si, 1.0-3.0% of Mn, more than 0.4% and not more than 1.2% of Mo, 0.005-0.100% of Al, 0.001-0.005% of Ca and the balance of Fe and impurities including N, P, S, O and Cu. In the impurities, N is not more than 0.01%, P is not more than 0.05%, S is not more than 0.01%, O is not more than 0.01%, and Cu is not more than 0.1%. The seamless steel pipe has a microstructure composed of a bainite-martensite duplex structure.

    摘要翻译: 公开了一种用于管线管的无缝钢管,其具有高强度和稳定的韧性,同时在从低温到室温的温度范围内表现出良好的抗硫化物腐蚀开裂性。 该无缝钢管具有以质量%计含有C:0.03〜0.08%,Si:0.05〜0.5%,Mn:1.0〜3.0%,Mo:0.4%以上且1.2%以下,Mo:0.005 -0.100%的Al,0.001-0.005%的Ca和余量的Fe以及包括N,P,S,O和Cu的杂质。 在杂质中,N不大于0.01%,P不大于0.05%,S不大于0.01%,O不大于0.01%,Cu不大于0.1%。 无缝钢管具有由贝氏体 - 马氏体双相组织构成的显微组织。