Steel pipe for an airbag system and a method for its manufacture
    21.
    发明申请
    Steel pipe for an airbag system and a method for its manufacture 审中-公开
    用于气囊系统的钢管及其制造方法

    公开(公告)号:US20050000601A1

    公开(公告)日:2005-01-06

    申请号:US10848119

    申请日:2004-05-19

    申请人: Yuji Arai Kunio Kondo

    发明人: Yuji Arai Kunio Kondo

    摘要: A high strength steel pipe for an airbag system has a steel composition comprising C: 0.05-0.20%, Si: 0.1-1.0%, P; at most 0.025%, S: at most 0.010%, Cr: 0.05-1.0%, Al: at most 0.10% at least one of Ti and Mn satisfying (1) Ti≦0.02% and (2) 0.4%≦Mn+40Ti≦1.2%, and a remainder of Fe. The composition may further include one or more of (i) at least one of Mo: 0.05-0.50%, Ni: 0.05-1.5%, V: 0.01-0.2%, and B: 0.0003-0.005%, (ii) at least one of Cu: 0.05-0.5% and Nb: 0.003-0.1%, and (iii) at least one of Ca: 0.0003-0.01%, Mg: 0.0003-0.01%, and REM: 0.0003-0.01%. The steel pipe can be manufactured by forming a pipe from the above-described steel composition to obtain prescribed dimensions, heating to at least the Ac1 transformation point and quenching, and then tempering at the Ac1 transformation point or below.

    摘要翻译: 用于气囊系统的高强度钢管具有C:0.05-0.20%,Si:0.1-1.0%,P; 至少0.025%,S:0.010%以下,Cr:0.05〜1.0%,Al:0.10%以下,满足(1)Ti <0.02%的Ti和Mn中的至少一种,(2)0.4% + 40Ti <= 1.2%,余量为Fe。 所述组合物还可包括以下中的至少一种:(i)Mo:0.05-0.50%,Ni:0.05-1.5%,V:0.01-0.2%和B:0.0003-0.005%中的至少一种,(ii)至少 Cu:0.05〜0.5%,Nb:0.003〜0.1%,(iii)Ca:0.0003〜0.01%,Mg:0.0003〜0.01%,REM:0.0003〜0.01%中的至少一种。 钢管可以通过从上述钢组合物形成管而获得规定尺寸,至少加热至Ac1相变点并淬火,然后在Ac1相变点或更低温度下回火来制造。

    Seamless steel tubes and method for producing the same
    22.
    发明授权
    Seamless steel tubes and method for producing the same 有权
    无缝钢管及其制造方法

    公开(公告)号:US07316143B2

    公开(公告)日:2008-01-08

    申请号:US11592782

    申请日:2006-11-03

    申请人: Kunio Kondo Yuji Arai

    发明人: Kunio Kondo Yuji Arai

    IPC分类号: B21B19/04

    摘要: A seamless steel tube comprising, in mass %, C: 0.30 to 0.50%, Si: 0.5% or less, Mn: 0.3 to 2.0%, P: 0.025% or less, S: 0.005% or less, Cr: 0.15 to 1.0%, Al: 0.001 to 0.05%, Ti: 0.005 to 0.05%, N: 0.02% or less, B: 0.0005 to 0.01% and O (oxygen): 0.0050% or less, wherein Beff defined in following equation (a) or (b) takes a value of 0.0001 or more, where Beff=B−10.8×(N−14×Ti/47.9)/14—(a) when Neff=N−14×Ti/47.9≧0, and Beff=B—(b) when Neff=N−14×Ti/47.9

    摘要翻译: 1.一种无缝钢管,以质量%计含有C:0.30〜0.50%,Si:0.5%以下,Mn:0.3〜2.0%,P:0.025%以下,S:0.005%以下,Cr:0.15〜1.0 %,Al:0.001〜0.05%,Ti:0.005〜0.05%,N:0.02%以下,B:0.0005〜0.01%,O(氧):0.0050%以下, (b)取值为0.0001以上,当Neff = N-14xTi / 47.9> = 0时,Beff = B-10.8x(N-14xTi / 47.9)/ 14-(a),Beff = B- )当Neff = N-14xTi / 47.9 <0时,能够提供具有优异的冷加工性,淬透性,韧性和扭转疲劳强度的无缝钢管,并且最适合用于制造一体式中空驱动轴 以及。

    Method of manufacturing heavy-wall seamless steel pipe
    23.
    发明授权
    Method of manufacturing heavy-wall seamless steel pipe 有权
    重型无缝钢管制造方法

    公开(公告)号:US08845830B2

    公开(公告)日:2014-09-30

    申请号:US13354609

    申请日:2012-01-20

    申请人: Kunio Kondo Yuji Arai

    发明人: Kunio Kondo Yuji Arai

    摘要: A steel pipe with a wall thickness over 30 mm is subjected to heat treatment of quenching and tempering using a temperature range of at least not less than 750° C. during the heating stage, makes it possible to obtain a heavy-wall seamless steel pipe having excellent toughness by resulting grain refinement. Quenching is by performing water cooling after heating the steel pipe to a temperature in the range of not less than 900° C. to not more than 1000° C. by using, as a heating means, induction heating at a frequency of not more than 200 Hz. Tempering is performed at a temperature in the range of not less than 500° C. to not more than 750° C. Preferably, after the heating by induction heating, a soaking treatment is performed in the temperature range of not less than 900° C. to not more than 1000° C. for 10 minutes or less followed by water cooling.

    摘要翻译: 在加热阶段期间,使用壁厚30mm以上的钢管进行淬火回火热处理,至少不低于750℃的温度范围,可以获得厚壁无缝钢管 由于晶粒细化而具有优异的韧性。 淬火是在将钢管加热至不低于900℃至不超过1000℃的温度下进行水冷,通过以加热方式使用频率不大于 200 Hz。 回火在不低于500℃至不超过750℃的温度下进行。优选地,在通过感应加热加热之后,在不低于900℃的温度范围内进行均热处理 在1000℃以上10分钟以下,然后水冷却。

    STEEL PIPE WITH EXCELLENT EXPANDABILITY AND METHOD FOR PRODUCING THE SAME
    24.
    发明申请
    STEEL PIPE WITH EXCELLENT EXPANDABILITY AND METHOD FOR PRODUCING THE SAME 审中-公开
    具有优异的可扩展性的钢管和用于生产它的方法

    公开(公告)号:US20100065166A1

    公开(公告)日:2010-03-18

    申请号:US12575028

    申请日:2009-10-07

    申请人: Kunio Kondo Yuji Arai

    发明人: Kunio Kondo Yuji Arai

    摘要: A steel pipe with excellent expandability, comprises, by mass %, C: 0.1 to 0.45%, Si: 0.3 to 3.5%, Mn: 0.5 to 5%, P: less than or equal to 0.03%, S: less than or equal to 0.01%, soluble Al: 0.01 to 0.8% (more than or equal to 0.1% in case Si content is less than 1.5%), N: less than or equal to 0.05%, O: less than or equal to 0.01%, and balance being Fe and impurities, having a mixed microstructure comprising ferrite and one or more selected from fine pearlite, bainite and martensite, and has a tensile strength of more than or equal to 600 MPa and a uniform elongation satisfying the following formula u-el≧28−0.0075 TS, wherein u-el is uniform elongation (%) and TS is tensile strength (MPa).

    摘要翻译: 具有优异的膨胀性的钢管以C:0.1〜0.45%,Si:0.3〜3.5%,Mn:0.5〜5%,P:小于或等于0.03%,S:小于或等于 至0.01%,可溶性Al:0.01〜0.8%(Si含量小于1.5%时大于等于0.1%),N:小于等于0.05%,O:0.01以下, 余量为Fe和杂质,具有包含铁素体和选自细珠光体,贝氏体和马氏体中的一种或多种的混合显微组织,并且具有大于或等于600MPa的拉伸强度和满足下式u-el的均匀伸长率 ≧28-0.0075 TS,其中u-el为均匀伸长率(%),TS为拉伸强度(MPa)。

    Method for producing steel pipe with excellent expandability
    26.
    发明授权
    Method for producing steel pipe with excellent expandability 有权
    具有优异膨胀性的钢管生产方法

    公开(公告)号:US08852366B2

    公开(公告)日:2014-10-07

    申请号:US13017087

    申请日:2011-01-31

    申请人: Kunio Kondo Yuji Arai

    发明人: Kunio Kondo Yuji Arai

    摘要: A steel pipe with excellent expandability, comprising, by mass %, C: 0.1 to 0.45%, Si: 0.3 to 3.5%, Mn: 0.5 to 5%, P: less than or equal to 0.03%, S: less than or equal to 0.01%, soluble Al: 0.01 to 0.8% (more than or equal to 0.1% in case Si content is less than 1.5%), N: less than or equal to 0.05%, O: less than or equal to 0.01%, and balance being Fe and impurities, having a mixed microstructure comprising ferrite and one or more selected from fine pearlite, bainite and martensite, and having a tensile strength of more than or equal to 600 MPa and a uniform elongation satisfying following formula (1).This steel pipe, having the above described chemical composition, can be obtained, for example, by being heated at temperatures from 700 to 790° C., then being forced-cooled down to a temperature of lower than or equal to 100° C. with the cooling rate of greater than or equal to 100° C./min at the temperature from 700 to 500° C. u-el≧28−0.0075TS  (1), wherein u-el means uniform elongation (%), and TS means tensile strength (MPa).

    摘要翻译: 具有优异膨胀性的钢管,以质量%计含有C:0.1〜0.45%,Si:0.3〜3.5%,Mn:0.5〜5%,P:小于或等于0.03%,S:小于或等于 至0.01%,可溶性Al:0.01〜0.8%(Si含量小于1.5%时大于等于0.1%),N:小于等于0.05%,O:0.01以下, 余量为Fe和杂质,具有包含铁素体和选自细珠光体,贝氏体和马氏体中的一种或多种的混合显微组织,并且具有大于或等于600MPa的拉伸强度和满足下式(1)的均匀伸长率。 具有上述化学组成的钢管可以例如通过在700〜790℃的温度下加热而被强制冷却至低于或等于100℃的温度。 在700至500℃的温度下,冷却​​速率大于或等于100℃/ min。u-el≥28-0.0075TS(1),其中u-el表示均匀伸长率(%),以及 TS表示拉伸强度(MPa)。

    Method for manufacturing seamless pipes
    27.
    发明授权
    Method for manufacturing seamless pipes 有权
    无缝管制造方法

    公开(公告)号:US08696834B2

    公开(公告)日:2014-04-15

    申请号:US13236702

    申请日:2011-09-20

    IPC分类号: C21D9/08 C22C38/22 C21D11/00

    摘要: A method for suppressing shock and storage cracking when manufacturing seamless steel pipes comprises hot piercing and hot rolling a billet consisting of, by mass percent controlled amounts of C, Si, Mn, Cr, Mo, Ti, and Al, with the balance being Fe and impurities of Ni, P, S, N, and O also in controlled amounts. Further heat treatment is performed, wherein a hot rolled steel pipe is direct quenched from a temperature of not lower than the Ar3 transformation point and the pipe is then subjected to heat treatment at a temperature of not lower than 450° C. and not higher than the Ac1 transformation point in heat treatment equipment for performing direct quenching. The steel pipe subjected to the heat treatment is reheated, quenched from a temperature of not lower than the Ac3 transformation point, and tempered at a temperature of not higher than the Ac1 transformation point.

    摘要翻译: 制造无缝钢管时的冲击和储存裂纹的抑制方法,其特征在于,以C,Si,Mn,Cr,Mo,Ti,Al的质量百分比计,由热刺穿和热轧制成的坯料,余量为Fe 和Ni,P,S,N和O的杂质也是受控量的。 进行进一步的热处理,其中热轧钢管从不低于Ar 3相变点的温度直接淬火,然后在不低于450℃的温度下对管进行热处理, 用于直接淬火的热处理设备的Ac1转换点。 进行热处理的钢管从不低于Ac 3相变点的温度再加热淬火,并在不高于Ac1相变点的温度下回火。

    Steel pipe for an airbag system
    28.
    发明授权
    Steel pipe for an airbag system 有权
    用于气囊系统的钢管

    公开(公告)号:US07727463B2

    公开(公告)日:2010-06-01

    申请号:US11266265

    申请日:2005-11-04

    申请人: Yuji Arai Kunio Kondo

    发明人: Yuji Arai Kunio Kondo

    IPC分类号: C22C38/18 C22C38/00 C21D1/00

    摘要: A high strength steel pipe for an airbag system has a steel composition comprising C: 0.05-0.20%, Si: 0.1-1.0%, P: at most 0.025%, S: at most 0.010%, Cr: 0.05-1.0%, Al: at most 0.10%, at least one of Ti and Mn satisfying (1) Ti≦0.02% and (2) 0.4%≦Mn+40Ti≦1.2%, and a remainder of Fe. The composition may further include one or more of (i) at least one of Mo: 0.05-0.50%, Ni: 0.05-1.5%, V: 0.01-0.2%, and B: 0.0003-0.005%, (ii) at least one of Cu: 0.05-0.5% and Nb: 0.003-0.1%, and (iii) at least one of Ca: 0.0003-0.01%, Mg: 0.0003-0.01%, and REM: 0.0003-0.01%. The steel pipe can be manufactured by forming a pipe from the above-described steel composition to obtain prescribed dimensions, heating to at least the Ac1 transformation point and quenching, and then tempering at the Ac1 transformation point or below.

    摘要翻译: 用于气囊系统的高强度钢管具有C:0.05-0.20%,Si:0.1-1.0%,P:0.025%以下,S:0.010%以下,Cr:0.05〜1.0%,Al :至多0.10%,Ti和Mn中的至少一种满足(1)Ti&nlE; 0.02%和(2)0.4%&amp; Mn; + 40Ti&nlE; 1.2%,余量为Fe。 所述组合物还可包括以下中的至少一种:(i)Mo:0.05-0.50%,Ni:0.05-1.5%,V:0.01-0.2%和B:0.0003-0.005%中的至少一种,(ii)至少 Cu:0.05〜0.5%,Nb:0.003〜0.1%,(iii)Ca:0.0003〜0.01%,Mg:0.0003〜0.01%,REM:0.0003〜0.01%中的至少一种。 钢管可以通过从上述钢组合物形成管而获得规定尺寸,至少加热至Ac1相变点并淬火,然后在Ac1相变点或更低温度下回火来制造。

    Seamless steel tubes and method for producing the same
    29.
    发明申请
    Seamless steel tubes and method for producing the same 有权
    无缝钢管及其制造方法

    公开(公告)号:US20070101789A1

    公开(公告)日:2007-05-10

    申请号:US11592782

    申请日:2006-11-03

    申请人: Kunio Kondo Yuji Arai

    发明人: Kunio Kondo Yuji Arai

    IPC分类号: C22C38/32 B21B19/04

    摘要: A seamless steel tube comprising, in mass %, C: 0.30 to 0.50%, Si: 0.5% or less, Mn: 0.3 to 2.0%, P: 0.025% or less, S: 0.005% or less, Cr: 0.15 to 1.0%, Al: 0.001 to 0.05%, Ti: 0.005 to 0.05%, N: 0.02% or less, B: 0.0005 to 0.01% and O (oxygen): 0.0050% or less, wherein Beff defined in following equation (a) or (b) takes a value of 0.0001 or more, where Beff=B−10.8×(N−14×Ti/47.9)/14 - - - (a) when Neff=N−14×Ti/47.9≧0, and Beff=B - - - (b) when Neff=N−14×Ti/47.9

    摘要翻译: 1.一种无缝钢管,以质量%计含有C:0.30〜0.50%,Si:0.5%以下,Mn:0.3〜2.0%,P:0.025%以下,S:0.005%以下,Cr:0.15〜1.0 %,Al:0.001〜0.05%,Ti:0.005〜0.05%,N:0.02%以下,B:0.0005〜0.01%,O(氧):0.0050%以下, (b)当Neff = N-14xTi / 47.9> = 0时,Beff = B-10.8x(N-14xTi / 47.9)/ 14 - - (a)的值为0.0001以上,Beff = B- - - (b)当Neff = N-14xTi / 47.9 <0时,能够提供具有优异的冷加工性,淬透性,韧性和扭转疲劳强度的无缝钢管,并且最适用于制造一件式的中空轴坯 型中空驱动轴。

    Steel pipe for an airbag system and a method for its manufacture
    30.
    发明申请
    Steel pipe for an airbag system and a method for its manufacture 有权
    用于气囊系统的钢管及其制造方法

    公开(公告)号:US20060130945A1

    公开(公告)日:2006-06-22

    申请号:US11266265

    申请日:2005-11-04

    申请人: Yuji Arai Kunio Kondo

    发明人: Yuji Arai Kunio Kondo

    IPC分类号: C21D9/08

    摘要: A high strength steel pipe for an airbag system has a steel composition comprising C: 0.05-0.20%, Si: 0.1-1.0%, P: at most 0.025%, S: at most 0.010%, Cr: 0.05-1.0%, Al: at most 0.10%, at least one of Ti and Mn satisfying (1) Ti≦0.02% and (2) 0.4%≦Mn+40Ti≦1.2%, and a remainder of Fe. The composition may further include one or more of (i) at least one of Mo: 0.05-0.50%, Ni: 0.05-1.5%, V: 0.01-0.2%, and B: 0.0003-0.005%, (ii) at least one of Cu: 0.05-0.5% and Nb: 0.003-0.1%, and (iii) at least one of Ca: 0.0003-0.01%, Mg: 0.0003-0.01%, and REM: 0.0003-0.01%. The steel pipe can be manufactured by forming a pipe from the above-described steel composition to obtain prescribed dimensions, heating to at least the Ac1 transformation point and quenching, and then tempering at the Ac1 transformation point or below.

    摘要翻译: 用于气囊系统的高强度钢管具有C:0.05-0.20%,Si:0.1-1.0%,P:0.025%以下,S:0.010%以下,Cr:0.05〜1.0%,Al :至多0.10%,Ti和Mn中的至少一种满足(1)Ti <= 0.02%和(2)0.4%<= Mn + 40Ti <= 1.2%,余量为Fe。 所述组合物还可包括以下中的至少一种:(i)Mo:0.05-0.50%,Ni:0.05-1.5%,V:0.01-0.2%和B:0.0003-0.005%中的至少一种,(ii)至少 Cu:0.05〜0.5%,Nb:0.003〜0.1%,(iii)Ca:0.0003〜0.01%,Mg:0.0003〜0.01%,REM:0.0003〜0.01%中的至少一种。 钢管可以通过从上述钢组合物形成管而获得规定的尺寸,加热到至少相变点和淬火,然后在Ac&lt; 1 转换点或以下。