PROCESS FOR MANUFACTURING A STEEL TUBE FOR AIR BAGS
    1.
    发明申请
    PROCESS FOR MANUFACTURING A STEEL TUBE FOR AIR BAGS 审中-公开
    制造用于气囊的钢管的方法

    公开(公告)号:US20130086965A1

    公开(公告)日:2013-04-11

    申请号:US13690818

    申请日:2012-11-30

    IPC分类号: B21C29/00

    摘要: A seamless steel tube for air bag use is formed from a steel comprising, in mass percent, C: 0.04-0.20%, Si: 0.10-0.50%, Mn: 0.10-1.00%, P: at most 0.025%, S: at most 0.005%, Al: at most 0.10%, Cr: 0.01-0.50%, Cu: 0.01-0.50%, Ni: 0.01-0.50%, a remainder of Fe and unavoidable impurities. The tube is cold drawn at least one time with a working ratio so that reduction in area is greater than 40% to obtain predetermined dimensions. The tube is then quench hardened by heating to at least the Ac3 point at a temperature rate increase of at least 50° C. per second followed by cooling at a cooling rate of at least 50° C. per second at least in a temperature range of 850-500° C. Tempering is done at a temperature of at most the Ac1 point.

    摘要翻译: 用于气囊使用的无缝钢管由钢组成,以质量%计含有C:0.04-0.20%,Si:0.10-0.50%,Mn:0.10-1.00%,P:0.025%以下,S: 最多0.005%,Al:0.10%以下,Cr:0.01-0.50%,Cu:0.01-0.50%,Ni:0.01-0.50%,余量为Fe和不可避免的杂质。 将管冷却至少一次,工作比例使得面积的减小大于40%以获得预定的尺寸。 然后通过以至少50℃/秒的温度速率升高加热至少至少Ac 3点来冷却管,然后至少在温度范围内以至少50℃/秒的冷却速率冷却 的温度为850-500℃。回火在最高Ac1点的温度下进行。

    STEEL TUBE FOR AIRBAGS AND A PROCESS FOR MANUFACTURING SAME
    3.
    发明申请
    STEEL TUBE FOR AIRBAGS AND A PROCESS FOR MANUFACTURING SAME 有权
    用于安全气囊的钢管及其制造方法

    公开(公告)号:US20120205016A1

    公开(公告)日:2012-08-16

    申请号:US13438956

    申请日:2012-04-04

    IPC分类号: C21D9/08 C22C38/54

    摘要: A steel tube for an airbag which has a low alloy cost and a strength of at least 1000 MPa and vTrs100 of −80° C. or below and a process for its manufacture which can minimize the number of times that softening annealing treatment is performed in a cold drawing step are provided. Stable properties are obtained even when quench hardening is carried out by high frequency induction heating on a large scale. The steel tube has a steel composition which comprisise, in mass percent, C: 0.05-0.20%, Si: 0.10-0.50%, Mn: 0.10-1.00%, P: at most 0.025%, S: at most 0.005%, Al: 0.005-0.10%, Ca: 0.0005-0.0050%, Nb: 0.005-0.050%, Ti: 0.005-0.050%, Cu: 0.01-0.50%, Ni: 0.01-0.50%, Cr: 0.01-0.50%, B: 0.0005-0.0050%, N: 0.002-0.010%, and a remainder of Fe and unavoidable impurities.

    摘要翻译: 一种用于气囊的钢管,其具有低合金成本和至少1000MPa的强度和-80℃或更低的vTrs100,以及其制造方法,其可以使软化退火处理的次数最少化 提供冷拔步骤。 即使通过高频感应加热大规模进行淬火硬化,也获得了稳定的性能。 钢管具有以质量%计含有C:0.05-0.20%,Si:0.10-0.50%,Mn:0.10-1.00%,P:0.025%以下,S:0.005%以下的钢组成 :0.005-0.10%,Ca:0.0005-0.0050%,Nb:0.005-0.050%,Ti:0.005-0.050%,Cu:0.01-0.50%,Ni:0.01-0.50%,Cr:0.01-0.50%,B: 0.0005-0.0050%,N:0.002-0.010%,余量为Fe和不可避免的杂质。