ELECTRON-BEAM WELDED JOINT, STEEL FOR ELECTRON-BEAM WELDING, AND MANUFACTURING METHOD
    11.
    发明申请
    ELECTRON-BEAM WELDED JOINT, STEEL FOR ELECTRON-BEAM WELDING, AND MANUFACTURING METHOD 有权
    电子束焊接接头,电子束焊接用钢和制造方法

    公开(公告)号:US20130279971A1

    公开(公告)日:2013-10-24

    申请号:US13988737

    申请日:2011-10-27

    IPC分类号: B23K35/30

    摘要: An electron-beam welded joint including, by mass %, C: 0.02% to 0.1%, Si: 0.03% to 0.30%, Mn: 1.5% to 2.5%, Ti: 0.005 to 0.015%, N: 0.0020 to 0.0060%, O: 0.0010% to 0.0035%, Nb: 0% to 0.020%, V: 0% to 0.030%, Cr: 0% to 0.50%, Mo: 0% to 0.50%, Cu: 0% to 0.25%, Ni: 0% to 0.50%, B: 0% to 0.0030%, S: limited to 0.010% or less, P: limited to 0.015% or less, Al: limited to 0.004% or less, and a balance consisting of iron and unavoidable impurities, wherein an index value CeEB is 0.49% to 0.60%, a number of oxides having an equivalent circle diameter of 1.0 μm or more is 20 pieces/mm2 or less, and a number of oxides having an equivalent circle diameter of 0.05 μm or more and less than 0.5 μm is 1×103 pieces/mm2 to 1×105 pieces/mm2 at a thickness center portion.

    摘要翻译: 1.一种电子束焊接接头,以质量%计含有C:0.02〜0.1%,Si:0.03〜0.30%,Mn:1.5〜2.5%,Ti:0.005〜0.015%,N:0.0020〜0.0060% O:0.0010〜0.0035%,Nb:0〜0.020%,V:0%〜0.030%,Cr:0〜0.50%,Mo:0〜0.50%,Cu:0〜0.25% 0%〜0.50%,B:0%〜0.0030%,S:限制在0.010%以下,P:0.015%以下,Al:0.004%以下,余量由铁和不可避免的杂质 其中,指数值CeEB为0.49〜0.60%,当量圆直径为1.0μm以上的氧化物数为20个/ mm 2以下,当量圆直径为0.05μm以上的氧化物数 在厚度中心部分,小于0.5μm为1×103个/ mm 2〜1×105个/ mm 2。

    High tensile steel excellent in high temperature strength and method for production thereof
    14.
    发明申请
    High tensile steel excellent in high temperature strength and method for production thereof 审中-公开
    耐高温性优异的高强度钢及其制造方法

    公开(公告)号:US20060065335A1

    公开(公告)日:2006-03-30

    申请号:US10509647

    申请日:2003-03-28

    IPC分类号: C22C38/12

    摘要: The present invention relates to a high-tensile-strength low alloy carbon steel (in the form of a steel sheet, a steel pipe, a section steel or a wire rod), for a building structure, said high-tensile-strength steel being excellent in high temperature strength during a relatively short span of about one hour in the temperature from 600° C. to 800° C. and being used in the field of building construction, civil engineering, an offshore structure, shipbuilding, a reservoir tank or the like; and, more specifically, is a high-tensile-strength steel excellent in high temperature strength, characterized by containing, in mass, C at not less than 0.005% to less than 0.08%, Si at not more than 0.5%, Mn at 0.1 to 1.6%, P at not more than 0.02%, S at not more than 0.01%, Mo at 0.1 to 1.5%, Nb at 0.03 to 0.3%, Ti at not more than 0.025%, B at 0.0005 to 0.003%, Al at not more than 0.06%, and N at not more than 0.006%, with the balance consisting of Fe and unavoidable impurities and satisfying the expression p≧−0.0029×T+2.48 when the steel temperature T (° C.) is within the range from 600° C. to 800° C., wherein p is a stress drop ratio (a yield stress at a high temperature/a yield stress at room temperature) that is obtained by converting a yield stress normalized by using a yield stress at room temperature.

    摘要翻译: 本发明涉及一种用于建筑结构的高强度低合金碳素钢(以钢板,钢管,截面钢或线材的形式),所述高强度钢为 在600℃至800℃的温度下,在相当短的约1小时内具有优异的高温强度,并且用于建筑施工,土木工程,海上结构,造船,储存罐或 类似; 更具体地说,是高温强度优异的高强度钢,其特征在于,以质量计含有不低于0.005%的Si至少为0.08%的C,0.1%以下的Mn 至1.6%,P不大于0.02%,S为0.01%以下,Mo为0.1〜1.5%,Nb为0.03〜0.3%,Ti为0.025%以下,B为0.0005〜0.003%,Al为Al 不大于0.06%,N为0.006%以下,余量由Fe和不可避免的杂质构成,当钢的温度T(℃)在...内时,满足p> = 0.0029×T + 2.48的表达式 范围为600℃至800℃,其中p为通过使用屈服应力归一化的屈服应力转换得到的应力下降率(在高温下的屈服应力/室温下的屈服应力) 室内温度。

    Steel plate for line pipe excellent in strength and ductility and method of production of same
    15.
    发明授权
    Steel plate for line pipe excellent in strength and ductility and method of production of same 有权
    钢管钢管强度和延展性优良,生产方法相同

    公开(公告)号:US08641836B2

    公开(公告)日:2014-02-04

    申请号:US13138310

    申请日:2009-10-28

    摘要: The present invention provides steel plate for line pipe excellent in strength and ductility and a method of production of the same. The steel plate has a steel composition containing, by mass %, C: 0.04 to 0.15%, Si: 0.05 to 0.60%, Mn: 0.80 to 1.80%, P: 0.020% or less, S: 0.010% or less, Nb: 0.01 to 0.08%, and Al: 0.003 to 0.08%, having a balance of iron and unavoidable impurities, and having a value of Ceq shown by the following formula of 0.48 or less, comprised of a mixed structure of ferrite and pearlite or ferrite and pearlite partially containing bainite in which a ferrite percentage is 60 to 95%, having a yield strength of 450 MPa or more, and having an amount of hydrogen contained in the steel of 0.1 ppm or less: Ceq=C+Mn/6+(Cu+Ni)/15+(Cr+Mo+Nb+V+Ti)/5+5B   .

    摘要翻译: 本发明提供强度和延展性优异的管线用钢板及其制造方法。 该钢板的组成为:以质量%计含有C:0.04〜0.15%,Si:0.05〜0.60%,Mn:0.80〜1.80%,P:0.020%以下,S:0.010%以下,Nb: 0.01〜0.08%,Al:0.003〜0.08%,余量由铁和不可避免的杂质构成,并且由铁氧体和珠光体的混合结构构成的下述通式1所示的Ceq值为0.48以下 或部分含有铁素体百分比为60〜95%的贝氏体的铁素体和珠光体,屈服强度为450MPa以上,钢中含有的氢的量为0.1ppm以下:Ceq = C + Mn / 6+(Cu + Ni)/ 15 +(Cr + Mo + Nb + V + Ti)/ 5 + 5B 1。

    High-strength steel for welded structures excellent in high temperature strength and method of production of the same
    16.
    发明申请
    High-strength steel for welded structures excellent in high temperature strength and method of production of the same 审中-公开
    用于高温强度优异的焊接结构的高强度钢及其制造方法

    公开(公告)号:US20060016526A1

    公开(公告)日:2006-01-26

    申请号:US11215413

    申请日:2005-08-29

    IPC分类号: C21D8/00 C22C38/22

    摘要: The present invention provides a high-strength steel for welded structures excellent in strength at a high temperature of a temperature range of 600° C. to 800° C. and a method of production of the same, in particular 490 MPa class high-strength steel for welded structures excellent in high temperature strength containing C: 0.005% to less than 0.040%, Si: 0.5% or less, Mn: 0.1 to less than 0.5%, P:0.02% or less, S: 0.01% or less, Mo: 0.3 to 1.5%, Nb: 0.03 to 0.15%, Al: 0.06% or less, and N: 0.006% or less and in accordance with need one or more of Cu, Ni, Cr, V, Ti, Ca, REM, and Mg, having a weld crack susceptible formulation PCM defined as PCM=C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B of 0.15% or less, substantially not containing B, and a remainder Fe and unavoidable impurities, the microstructure being mainly composed of a mixed structure of ferrite and bainite, and the fraction of bainite being 20 to 90%.

    摘要翻译: 本发明提供一种在600℃〜800℃的高温下的强度优异的焊接结构体的高强度钢及其制造方法,特别是490MPa级的高强度 含有C:0.005〜小于0.040%,Si:0.5%以下,Mn:0.1〜小于0.5%,P:0.02%以下,S:0.01%以下的高温强度优异的焊接结构用钢, Mo:0.3〜1.5%,Nb:0.03〜0.15%,Al:0.06%以下,N:0.006%以下,根据需要Cu,Ni,Cr,V,Ti,Ca,REM, ,和具有焊接裂纹易受影响的制剂P< CM>定义为P CM + C + Si / 30 + Mn / 20 + Cu / 20 + Ni / 60 + Cr / 20 + Mo / 15 + V / 10 + 5B为0.15%以下,基本不含B,余量为Fe和不可避免的杂质,微观结构主要由铁素体和贝氏体组成,贝氏体组分 为20〜90%。

    Evaluation apparatus for cleanliness of metal and method thereof
    17.
    发明授权
    Evaluation apparatus for cleanliness of metal and method thereof 有权
    金属清洁度评价装置及其方法

    公开(公告)号:US06555063B1

    公开(公告)日:2003-04-29

    申请号:US09374826

    申请日:1999-08-13

    IPC分类号: G01N3300

    摘要: In order to quickly and economically evaluate cleanliness of a metal with high representativity when quantities, compositions, etc., of non-metallic inclusion particles existing in a metal and resulting in product defects are evaluated by a sample collected during the production process of the metal, the present invention provides an evaluation method involving the steps of levitation-melting a metal piece for a predetermined time by cold crucible levitation-melting means, discharging non-metallic inclusion particles contained in the metal piece to the surface of a molten metal, and directly analyzing a curved and non-smooth sample surface after solidification by a fluorescent X-ray analysis method using an energy dispersion type spectroscope, or by other chemical or physical measurements, to measure or analyze the quantities of elements constituting the non-metallic inclusion particles and to determine quantity of the non-metallic inclusions.

    摘要翻译: 为了快速,经济地评估具有高代表性的金属的清洁度,当金属中存在的非金属夹杂物颗粒的数量,组成等等,并且由金属制造过程中收集的样品评估产品缺陷时 本发明提供一种评价方法,包括以下步骤:通过冷坩埚悬浮熔化装置将金属片悬浮熔融预定时间,将包含在金属片中的非金属夹杂物颗粒排出到熔融金属表面;以及 通过使用能量分散型分光器的荧光X射线分析方法或通过其他化学或物理测量直接分析固化后的弯曲和非平滑样品表面,以测量或分析构成非金属夹杂物颗粒的元素的量 并确定非金属夹杂物的数量。

    Ti-Al intermetallic compound with Se
    19.
    发明授权
    Ti-Al intermetallic compound with Se 失效
    Ti-Al金属间化合物

    公开(公告)号:US5348594A

    公开(公告)日:1994-09-20

    申请号:US58840

    申请日:1993-05-06

    IPC分类号: C22C14/00

    CPC分类号: C22C14/00

    摘要: A Ti--Al intermetallic compound has a compressibility of at least 25% at room temperature and a superior high temperature oxidation resistance and consists essentially of about 40 to 52 atomic percent of Ti, about 48 to 60 atomic percent of Al, and 10 to 1000 atomic ppm of at least one of P, As, Se, or Te.

    摘要翻译: Ti-Al金属间化合物在室温下具有至少25%的压缩性和优异的高温抗氧化性,并且基本上由约40至52原子%的Ti,约48至60原子%的Al和10至1000 P,As,Se或Te中的至少一个的原子ppm。