Steel having excellent vibration-dampening properties and weldability
    3.
    发明授权
    Steel having excellent vibration-dampening properties and weldability 失效
    钢具有优异的抗振性和可焊性

    公开(公告)号:US5173254A

    公开(公告)日:1992-12-22

    申请号:US787028

    申请日:1991-11-04

    IPC分类号: C22C38/00 C22C38/06 C22C38/16

    CPC分类号: C22C38/06

    摘要: Steel having excellent vibration-damping properties and weldability includes about 0.02 wt % or less of C, about 0.02 wt % or less of Si, and about 0.08 wt % or less of Mn. This steel also includes about 0.05 to 1.5 wt % of Cu, about 1.0 to 7.0 wt % of Al, about 0.008 wt % or less of N, and Fe and incidental impurities which together constitute the remaining wt %.

    摘要翻译: 具有优异的阻尼性和焊接性的钢包括约0.02重量%以下的C,约0.02重量%以下的Si和约0.08重量%以下的Mn。 该钢还包括约0.05-1.5wt%的Cu,约1.0-7.0wt%的Al,约0.008wt%或更少的N,以及Fe和附带的杂质一起构成剩余的wt%。

    Method of manufacturing high chromium martensite steel pipe having
excellent pitting resistance
    4.
    发明授权
    Method of manufacturing high chromium martensite steel pipe having excellent pitting resistance 失效
    具有优异耐点蚀性的高铬马氏体钢管的制造方法

    公开(公告)号:US6136109A

    公开(公告)日:2000-10-24

    申请号:US181829

    申请日:1998-10-28

    摘要: A high-Cr martensite steel pipe having excellent pitting resistance and method for manufacturing the same, which involves forming a pipe of steel including C: about 0.03 wt % or less, Si: about 0.5 wt % or less, Mn: about 0.5-3.0 wt %, Cr: about 10.0-14.0 wt %, Ni: about 0.2-2.0 wt %, Cu: about 0.2-1.0 wt % and N: about 0.03 wt % or less with the balance being Fe and incidental impurities, and having a value X shown as defined in the following formula (1) of about 12.2 or more. The pipe is quenched after austenitizing it at a temperature substantially equal to an A.sub.C3 point or higher, and the pipe is annealed in a temperature range from about 550.degree. C. or higher to a temperature lower than an A.sub.C1 point.value X=(Cr%)+3(Cu%)-3(C%) (1)The high-Cr martensite steel pipe made by this method exhibits excellent pitting resistance and overall surface corrosion resistance even in an environment containing a carbonic acid gas, and further exhibits excellent weldability and toughness in the welding-heat-affected zones.

    摘要翻译: 具有优异的耐点蚀性的高Cr马氏体钢管及其制造方法,其特征在于,包括形成C:约0.03重量%以下,Si:约0.5重量%以下,Mn:约0.5-3.0的钢管 重量%,Cr:约10.0〜14.0重量%,Ni:约0.2〜2.0重量%,Cu:约0.2〜1.0重量%,N:约0.03重量%以下,余量为Fe及附带杂质, 如下述式(1)所示的值X为约12.2以上。 在基本上等于AC3点以上的温度奥氏体化后,管道淬火,管道在约550℃以上至低于AC1点的温度范围内进行退火。值X =(Cr %)+ 3(Cu%)-3(C%)(1)通过该方法制造的高Cr马氏体钢管即使在含有碳酸气体的环境中也具有优异的耐点蚀性和整体表面耐腐蚀性, 焊接热影响区的焊接性和韧性优良。

    Martensitic steel for line pipe having excellent corrosion resistance
and weldability
    5.
    发明授权
    Martensitic steel for line pipe having excellent corrosion resistance and weldability 失效
    管线管马氏体钢具有优良的耐腐蚀性和焊接性

    公开(公告)号:US5985209A

    公开(公告)日:1999-11-16

    申请号:US821512

    申请日:1997-03-21

    CPC分类号: C22C38/44

    摘要: A martensitic steel for a line pipe having excellent corrosion resistance and weldability is disclosed. The martensitic steel contains about:0.02 wt % or less of C, 0.50 wt % or less of Si,0.2 to 3.0 wt % of Mn, 10 to 14 wt % of Cr,0.2 to 7.0 wt % of Ni, 0.2 to 5.0 wt % of Mo,0.1 wt % or less of Al, 0.07 wt % or less of N, andthe balance being Fe and incidental impurities; andthese elements satisfy substantially the following equations:(Cr %)+(Mo %)+0.1(N %)-3(C %).gtoreq.12.2,(Cr %)+3.5(Mo %)+10(N %)+0.2(Ni %)-20(C %).gtoreq.14.5, and150(C %)+100(N %)-(Ni %)-(Mn %).ltoreq.4.The martensitic steel may further contain at least one element selected from the group consisting ofabout 2.0 wt % or less of Cu, about 0.15 wt % or less of Ti, about 0.15 wt % or less of Zr, about 0.15 wt % or less of Ta andabout 0.006 wt % or less of Ca, andthese elements satisfy substantially the following equations:(Cr %)+(Mo %)+0.1(N %)+3(Cu %)-3(C %).gtoreq.12.2,(Cr %)+3.5(Mo %)+10(N %)+0.2(Ni %)-20(C %).gtoreq.14.5,150(C %)+100(N %)-(Ni %)-(Mn %).ltoreq.4.

    摘要翻译: 公开了一种具有优异的耐腐蚀性和焊接性的线管的马氏体钢。 马氏体钢的含量为:0.02重量%以下的C,0.50重量%以下的Si,0.2〜3.0重量%的Mn,10〜14重量%的Cr,0.2〜7.0重量%的Ni,0.2〜5.0重量% 的Mo,0.1重量%以下的Al,0.07重量%以下的N,余量为Fe和附带的杂质; 这些元素基本上满足以下等式:(Cr%)+(Mo%)+ 0.1(N%)-3(C%)> / = 12.2,(Cr%)+ 3.5(Mo%)+ 10(N% )+0.2(Ni%)-20(C%)> / = 14.5,150(C%)+ 100(N%) - (Ni%) - (Mn%)4。 马氏体钢还可以含有选自Cu:2.0重量%以下,Ti:0.15重量%以下,Zr:0.15重量%以下,Zr:0.15重量%以下,0.15重量%以下 Ta和约0.006重量%以下的Ca,这些元素基本上满足以下等式:(Cr%)+(Mo%)+ 0.1(N%)+ 3(Cu%)-3(C%)> 12.2,(Cr%)+ 3.5(Mo%)+10(N%)+ 0.2(Ni%)-20(C%)> = 14.5,150(C%)+ 100(N%) - (Ni% ) - (Mn%)

    High chromium martensitic steel pipe having excellent pitting resistance
and method of manufacturing
    6.
    发明授权
    High chromium martensitic steel pipe having excellent pitting resistance and method of manufacturing 失效
    具有优异耐点蚀性的高铬马氏体钢管及其制造方法

    公开(公告)号:US5858128A

    公开(公告)日:1999-01-12

    申请号:US634860

    申请日:1996-04-19

    摘要: A high-Cr martensitic steel pipe having excellent pitting resistance and method for manufacturing the same, which involves forming a pipe of steel including C: about 0.03 wt % or less, Si: about 0.5 wt % or less, Mn: about 0.5-3.0 wt %, Cr: about 10.0-14.0 wt %, Ni: about 0.2-2.0 wt %, Cu: about 0.2-1.0 wt % and N: about 0.03 wt % or less with the balance being Fe and incidental impurities, and having a value X shown as defined in the following formula (1) of about 12.2 or more. The pipe is quenched after austenitizing it at a temperature substantially equal to an Ac.sub.3 point or higher, and the pipe is tempered in a temperature range from about 550.degree. C. or higher to a temperature lower than an Ac.sub.1 point.value X=(Cr %)+3(Cu %)-3(C %) (1)The high-Cr martensitic steel pipe made by this method exhibits excellent pitting resistance and general corrosion resistance even in an environment containing a carbonic acid gas, and further exhibits excellent weldability and toughness in the heat-affected zones.

    摘要翻译: 具有优异的耐点蚀性的高Cr马氏体钢管及其制造方法,其特征在于,包括形成C:约0.03重量%以下,Si:约0.5重量%以下,Mn:约0.5-3.0的钢管 重量%,Cr:约10.0〜14.0重量%,Ni:约0.2〜2.0重量%,Cu:约0.2〜1.0重量%,N:约0.03重量%以下,余量为Fe及附带杂质, 如下述式(1)所示的值X为约12.2以上。 在基本等于Ac3点以上的温度奥氏体化之后,管道被淬火,并且在约550℃以上的温度范围内回火到低于Ac1点的温度。值X =(Cr %)+ 3(Cu%)-3(C%)(1)通过该方法制造的高Cr马氏体钢管即使在含有碳酸气体的环境中也具有优异的耐点蚀性和一般的耐腐蚀性,并且还显示出优异的 热影响区的焊接性和韧性。

    Centrifugal cast roll shell material
    7.
    发明授权
    Centrifugal cast roll shell material 失效
    离心铸辊外壳材质

    公开(公告)号:US5738734A

    公开(公告)日:1998-04-14

    申请号:US737070

    申请日:1996-10-29

    CPC分类号: C22C37/06 B21B27/00

    摘要: A centrifugal cast roll shell material composed of a granular MC carbide, graphite and C: 2.5 to 4.7%, Si: 0.8 to 3.2%, Mn: 0.1 to 2.0%, Cr: 0.4 to 1.9%, Mo: 0.6 to 5%, V: 3.0 to 10.0% and Nb: 0.6 to 7.0%, satisfying the following formulae (1), (2), (3) and (4): 2.0+0.715 V+0.10 Nb.ltoreq.C (%) (1) 1.1.ltoreq.Mo/Cr (2) Nb/V.ltoreq.0.8 (3) 0.2.ltoreq.Nb/V (4), the remainder being Fe and inevitable impurities, wherein the pouring temperature is 1,400.degree. C. or higher.

    摘要翻译: PCT No.PCT / JP96 / 00544 Sec。 371日期1996年10月29日第 102(e)日期1996年10月29日PCT 1996年3月6日PCT公布。 公开号WO96 / 27688 日期1996年9月12日由粒状MC碳化物,石墨和C:2.5〜4.7%,Si:0.8〜3.2%,Mn:0.1〜2.0%,Cr:0.4〜1.9%,Mo: 0.6〜5%,V:3.0〜10.0%,Nb:0.6〜7.0%,满足下式(1),(2),(3)和(4):2.0 + 0.715 V + 0.10 Nb < (%)(1)1.1

    Roll for hot rolling having enhanced abrasion resistance and reduced
carbide segregation
    8.
    发明授权
    Roll for hot rolling having enhanced abrasion resistance and reduced carbide segregation 失效
    具有增强的耐磨性和降低的碳化物偏析的热轧辊

    公开(公告)号:US6095957A

    公开(公告)日:2000-08-01

    申请号:US011152

    申请日:1998-01-29

    IPC分类号: B21B27/00 B32B15/01 B23P15/00

    CPC分类号: B21B27/00 B32B15/011

    摘要: High-quality high-speed steel roll which is markedly excellent in abrasion resistance and free of carbide segregation even in the case of production by centrifugal casting of economical benefit; it comprises an outer layer containing, by all weight ratios, C; 2.4-2.9%, Si; not more than 1%, Mn; not more than 1%, Cr; 12-18%, Mo; 3-9%, V; 3-8% and Nb; 0.5-4%, and meeting with the following equations (1) and (2) at one time,0.27.gtoreq.Mo (%)/Cr (%).ltoreq.0.7 (1)C (%)+0.2.multidot.Cr (%).ltoreq.6.2 (2)the outer layer further containing as the balance Fe and unavoidable impurities.

    摘要翻译: PCT No.PCT / JP97 / 02062 Sec。 371日期1998年1月29日 102(e)日期1998年1月29日PCT提交1997年6月16日PCT公布。 出版物WO97 / 48505 日期1997年12月24日即使在离心铸造生产的经济效益的情况下,耐磨性显着优异且没有碳化物偏析的高品质高速钢辊; 它包括一个外层,其中所有的重量比都是C; 2.4-2.9%,Si; 不超过1%,Mn; 不超过1%,Cr; 12-18%,Mo; 3-9%,V; 3-8%和Nb; 0.5-4%,并同时符合下列公式(1)和(2):0.27> / = Mo(%)/ Cr(%)

    Method of manufacturing roll for hot rolling
    9.
    发明授权
    Method of manufacturing roll for hot rolling 失效
    制造轧制辊的方法

    公开(公告)号:US5839495A

    公开(公告)日:1998-11-24

    申请号:US932691

    申请日:1997-09-18

    摘要: A roll outer layer material for hot rolling includes, as analyzed in weight percent, of 2.5-4.0% C, 6.0-20% Cr, 3.0-10.0% V, 0.6-5.0% Nb, 2.0-15% Mo, 3.0% or below Si, 3.0% or below Mn, C, V, Nb and Cr satisfying a following formula (1), 10.5(%).ltoreq.6.5.C(%)-1.3.V(%)-0.7.Nb(%).ltoreq.2.Cr(%)-2(%)(1) , and the balance being Fe and incidental impurities. A method of manufacturing a roll for hot rolling includes the steps of centrifugally casting an outer layer material having the above composition, centrifugally casting graphite steel containing 0.5% or above of C as an intermediate layer, and casting an axis material which is a spheroidal graphite cast iron, a flake graphite cast iron or a graphite steel. C is present in the intermediate layer in an amount which satisfies a following formula (2), C (intermediate layer).gtoreq.2.0-0.5 (C-0.2 V-0.11 Nb)(outer layer)(2)

    摘要翻译: 用于热轧的辊外层材料包括如重量百分比为2.5-4.0%C,6.0-20%Cr,3.0-10.0%V,0.6-5.0%Nb,2.0-15%Mo,3.0%或 低于Si,3.0%以下的Mn,C,V,Nb和Cr满足下​​式(1),10.5(%)≤6.5.C(%)-1.3.V(%)-0.7。Nb(% ) / = 2.0-0.5(C-0.2V-0.11 Nb)(外层)(2)的量存在于中间层中。

    Process for producing extra high tensile steel having excellent stress
corrosion cracking resistance
    10.
    发明授权
    Process for producing extra high tensile steel having excellent stress corrosion cracking resistance 失效
    具有优异的耐应力腐蚀开裂性的超高强度钢的制造方法

    公开(公告)号:US5827379A

    公开(公告)日:1998-10-27

    申请号:US785717

    申请日:1997-01-17

    IPC分类号: C21D1/18 C21D8/02 C21D6/00

    摘要: An extra high tensile steel having an excellent stress corrosion cracking resistance in sea water and a yield strength of 1080 MPa or more is provided. A slab comprising, in terms of % by weight, 0.04 to 0.09% of C, 0.01 to 0.10% of Si, 0.05 to 0.65% of Mn, 8.0 to 11.0% of Ni, 0.5 to 1.5% of Mo, 0.2 to 1.5% of Cr, 0.02 to 0.20% of V and 0.01 to 0.08% of Al with the balance consisting of iron and unavoidable impurities is heated to a temperature between 1000.degree. C. and 1250.degree. C., hot rolled at a temperature of Ar' point or above, air-cooled, reheated at a rate of 120.degree. C./min or less to a temperature region of from (A.sub.C3 point--40.degree. C.) to (A.sub.C3 point+40.degree. C.), quenched and subsequently tempered at a temperature of the A.sub.C1 point or below.

    摘要翻译: 提供了一种在海水中具有优异的耐应力腐蚀开裂性和1080MPa以上的屈服强度的超高强度钢。 一种板坯,以重量%计,C:0.04〜0.09%,Si:0.01〜0.10%,Mn:0.05〜0.65%,Ni:8.0〜11.0%,Mo:0.5〜1.5%,Mo:0.2〜1.5% 的Cr,0.02〜0.20%的V和0.01〜0.08%的Al余量由铁和不可避免的杂质组成的混合物加热至1000℃至1250℃的温度,在Ar'点的温度下热轧 或以上,空气冷却,以120℃/分钟以下的速度加热至(AC3-40℃)至(AC3点+ 40℃)的温度区域,淬火并随后在 AC1点以下的温度。