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1.发明授权公开(公告)号：US08852362B2
公开(公告)日：2014-10-07
申请号：US13486503
申请日：2012-06-01
IPC分类号： C22C38/18 , C21D11/00 , C22C38/40 , C21D7/06 , B21C37/30 , F28F21/08 , C22C38/04 , C21D9/00 , C22C38/00 , C22C38/42 , B21K21/00 , B21C37/06 , F16L9/02 , C22C38/02 , C21D6/00 , F22B37/10 , C22C38/48 , C21D8/10 , C21D9/08 , C22C38/44
CPC分类号： C21D6/004 , B21C37/06 , B21K21/00 , C21D7/06 , C21D8/105 , C21D9/0068 , C21D9/08 , C21D2211/001 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/48 , F16L9/02 , F22B37/10 , F28F21/083 , Y10S148/909 , Y10T29/479
摘要： There is provided an austenitic stainless steel pipe excellent in steam oxidation resistance. The austenitic stainless steel pipe excellent in steam oxidation resistance contains, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, and is configured so that a region satisfying the following Formula exists in a metal structure at a depth of 5 to 20 μm from the inner surface of the steel pipe: (α/β)×δ/ε×100≧0.3 where the meanings of symbols in the above Formula are as follows: α: sum total of the number of pixels of digital image in region in which orientation difference of adjacent crystals detected by electron backscattering pattern is 5 to 50 degrees β: the number of total pixels of digital image in region of measurement using electron backscattering pattern ε: analysis pitch width of electron backscattering pattern (μm) δ: grain boundary width (μm).
摘要翻译： 提供了耐蒸汽抗氧化性优异的奥氏体不锈钢管。 耐蒸汽抗氧化性优异的奥氏体系不锈钢管，以质量％计含有Cr的14〜28％，Ni含量为6〜30％，并且，在金属结构体的深度 从钢管的内表面5〜20μm：（α/＆bgr）×δ/＆egr;×100≥0.3上式中的符号的含义如下：α：像素数的总和 通过电子后向散射图案检测的相邻晶体的取向差为5〜50度的区域中的数字图像的数字图像：使用电子后向散射图案的测量区域中的数字图像的总像素数：电子后向散射的分析间距宽度 图案（μm）δ：晶界宽度（μm）。
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公开(公告)号：US20130130058A1
公开(公告)日：2013-05-23
申请号：US13429966
申请日：2012-03-26
申请人： Atsuro ISEDA , Yoshitaka Nishiyama , Masahiro Seto , Satomi Yamamoto , Hiroyuki Hirata , Yasutaka Noguchi , Mitsuru Yoshizawa , Hiroshi Matsuo
发明人： Atsuro ISEDA , Yoshitaka Nishiyama , Masahiro Seto , Satomi Yamamoto , Hiroyuki Hirata , Yasutaka Noguchi , Mitsuru Yoshizawa , Hiroshi Matsuo
IPC分类号： B32B15/01
CPC分类号： C22C38/42 , C21D6/004 , C21D7/06 , C21D9/08 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , Y10T428/12653
摘要： To provide an austenitic stainless steel which has an excellent high-temperature corrosion thermal fatigue cracking resistance.An austenitic stainless steel containing, by mass %, Cr: 15.0 to 23.0%, and Ni: 6.0 to 20.0%, wherein a near-surface portion is covered with a worked layer with high energy density having an average thickness of 5 to 30 μm.
摘要翻译： 提供具有优异的高温腐蚀热疲劳抗开裂性的奥氏体不锈钢。 一种奥氏体不锈钢，以质量％计含有Cr：15.0〜23.0％，Ni：6.0〜20.0％，其中表面部分被平均厚度为5〜30μm的能量密度高的加工层覆盖 。
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公开(公告)号：US20140234155A1
公开(公告)日：2014-08-21
申请号：US14237586
申请日：2012-07-31
IPC分类号： C22C19/05
CPC分类号： C22C19/056 , C22C19/05 , C22C19/051 , C22C19/055 , C22F1/10
摘要： A Ni-based heat resistant alloy as pipe, plate, rod, forgings and the like consists of C≦0.15%, Si≦2%, Mn≦3%, P≦0.03%, S≦0.01%, Cr: 15% or more and less than 28%, Mo: 3 to 15%, Co: more than 5% and not more than 25%, Al: 0.2 to 2%, Ti: 0.2% to 3%, Nd: fn to 0.08%, and O≦0.4Nd, further containing, as necessary, at least one kind of Nb, W, B, Zr, Hf, Mg, Ca, Y, La, Ce, Ta, Re and Fe of specific amounts, the balance being Ni and impurities, wherein, fn=1.7×10−5d+0.05{(Al/26.98)+(Ti/47.88)+(Nb/92.91)}. In the formula, d denotes an average grain size (μm), and each element symbol denotes the content (mass %) of that element. If the alloy contains W, Mo+(W/2)≦15% holds. The alloy has improved ductility after long-term use at high temperatures, and cracking due to welding can be avoided.
摘要翻译： 作为管，板，棒，锻件等的Ni基耐热合金由C＆lt; Ll; 0.15％，Si＆NlE; 2％，Mn＆NlE; 3％，P＆NlE; 0.03％，S＆lt; 0.01％，Cr：15％ 多于28％，Mo：3〜15％，Co：5％以上25％以下，Al：0.2〜2％，Ti：0.2％〜3％，Nd：fn〜0.08％ O，nNE，0.4Nd，根据需要还含有特定量的Nb，W，B，Zr，Hf，Mg，Ca，Y，La，Ce，Ta，Re和Fe中的至少一种，其余为Ni和 杂质，其中，fn = 1.7×10-5d + 0.05 {（Al / 26.98）+（Ti / 47.88）+（Nb / 92.91）}。 式中，d表示平均粒径（μm），各元素符号表示该元素的含量（质量％）。 如果合金含有W，则Mo +（W / 2）＆nlE; 15％成立。 该合金在长期使用高温下具有改善的延展性，并且可以避免由于焊接引起的开裂。
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公开(公告)号：US09328403B2
公开(公告)日：2016-05-03
申请号：US14237586
申请日：2012-07-31
CPC分类号： C22C19/056 , C22C19/05 , C22C19/051 , C22C19/055 , C22F1/10
摘要： A Ni-based heat resistant alloy as pipe, plate, rod, forgings and the like consists of C≦0.15%, Si≦2%, Mn≦3%, P≦0.03%, S≦0.01%, Cr: 15% or more and less than 28%, Mo: 3 to 15%, Co: more than 5% and not more than 25%, Al: 0.2 to 2%, Ti: 0.2% to 3%, Nd: fn to 0.08%, and O≦0.4Nd, further containing, as necessary, at least one kind of Nb, W, B, Zr, Hf, Mg, Ca, Y, La, Ce, Ta, Re and Fe of specific amounts, the balance being Ni and impurities, wherein, fn=1.7×10−5d+0.05{(Al/26.98)+(Ti/47.88)+(Nb/92.91)}. In the formula, d denotes an average grain size (μm), and each element symbol denotes the content (mass %) of that element. If the alloy contains W, Mo+(W/2)≦15% holds. The alloy has improved ductility after long-term use at high temperatures, and cracking due to welding can be avoided.
摘要翻译： 作为管，板，棒，锻件等的Ni基耐热合金由C＆lt; Ll; 0.15％，Si＆NlE; 2％，Mn＆NlE; 3％，P＆NlE; 0.03％，S＆lt; 0.01％，Cr：15％ 多于28％，Mo：3〜15％，Co：5％以上25％以下，Al：0.2〜2％，Ti：0.2％〜3％，Nd：fn〜0.08％ O，nNE，0.4Nd，根据需要还含有特定量的Nb，W，B，Zr，Hf，Mg，Ca，Y，La，Ce，Ta，Re和Fe中的至少一种，其余为Ni和 杂质，其中，fn = 1.7×10-5d + 0.05 {（Al / 26.98）+（Ti / 47.88）+（Nb / 92.91）}。 式中，d表示平均粒径（μm），各元素符号表示该元素的含量（质量％）。 如果合金含有W，则Mo +（W / 2）＆nlE; 15％成立。 该合金在长期使用高温下具有改善的延展性，并且可以避免由于焊接引起的开裂。
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5.发明授权Mandrel bar for high-alloy rolling, method for surface treating a mandrel bar, method for producing mandrel bar, and method for operating seamless pipe mill 有权高合金轧制用芯棒，芯棒的表面处理方法，芯棒的制造方法以及无缝管轧机的运转方法公开(公告)号：US08065901B2
公开(公告)日：2011-11-29
申请号：US12236970
申请日：2008-09-24
申请人： Sumio Iida , Yasuyoshi Hidaka , Mitsuru Yoshizawa , Koji Nakaike
发明人： Sumio Iida , Yasuyoshi Hidaka , Mitsuru Yoshizawa , Koji Nakaike
IPC分类号： B21B17/10
CPC分类号： B21B25/00 , B21B3/02 , B21B17/02 , B21B17/04 , B21B23/00 , B21B25/04 , C21D8/10 , C21D8/105 , C21D9/08 , Y10S72/70
摘要： A method for surface treating a mandrel bar used for hot rolling of high-alloy seamless steel pipe is provided. The method includes heat treating the mandrel bar to develop a scale, and after heat treatment, rolling ordinary steel comprising 8% or less of chromium for at least 50 passes. This achieves a mandrel bar for rolling high-alloy steel possessing both durability and superior resistance to seizure.
摘要翻译： 提供了一种用于表面处理用于高合金无缝钢管的热轧的芯棒的方法。 该方法包括热处理芯棒以形成刻度，并且在热处理之后，将包含8％或更少的铬的普通钢轧制至少50次。 这实现了具有耐久性和优异的抗咬合性的用于轧制高合金钢的芯棒。
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公开(公告)号：US20100086430A1
公开(公告)日：2010-04-08
申请号：US12631307
申请日：2009-12-04
CPC分类号： C22C38/24 , C22C38/001 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/26 , C22C38/30 , C22C38/32
摘要： There is provided a heat resistant ferritic steel, excellent in the weld crack resistance of the HAZ and creep strength. A high-Cr heat resistant ferritic steel is characterized by consisting of, by mass %, Si: more than 0.1% and not more than 1.0%, Mn: 2.0% or less, Co: 1 to 8%, Cr: 7 to 13%, V: 0.05 to 0.4%, Nb: 0.01 to 0.09%, either one or both of Mo and W: 0.5 to 4% as a total, B: 0.005 to 0.025%, Al: 0.03% or less, and N: 0.003 to 0.06%, and containing C in an amount satisfying Expression (1), the balance being Fe and impurities, and O, P and S as impurities being such that O: 0.02% or less, P: 0.03% or less, and S: 0.02% or less, respectively, 0.005≦C≦(−5/3)×B+0.085 (1) in which C and B represent the content of each element (mass %). Furthermore, the high-Cr heat resistant ferritic steel may contain one or more kinds selected from the group consisting of Nd, Ta, Ca and Mg.
摘要翻译： 提供耐热铁素体钢，HAZ的耐焊缝龟裂性和蠕变强度优异。 高Cr耐热铁素体钢的特征在于以质量％计含有Si：大于0.1％且不大于1.0％的Mn：2.0％以下，Co：1〜8％，Cr：7〜13 ％，V：0.05〜0.4％，Nb：0.01〜0.09％，Mo和W中的任一种或两者：总计为0.5〜4％，B：0.005〜0.025％，Al：0.03％以下，N： 0.003〜0.06％，含有满足式（1）的量的C，余量为Fe和杂质，作为杂质的O，P和S为O：0.02％以下，P：0.03％以下，P：0.03％以下， S：0.02％以下，分别为0.005＆nlE; C＆NlE;（ - 5/3）×B + 0.085（1）其中C和B表示各元素的含量（质量％）。 此外，高Cr耐热铁素体钢可以含有选自Nd，Ta，Ca和Mg中的一种或多种。
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公开(公告)号：US07662244B2
公开(公告)日：2010-02-16
申请号：US10443821
申请日：2003-05-23
IPC分类号： C22C38/18
CPC分类号： C22C38/02 , C21D1/19 , C21D1/84 , C21D6/002 , C21D2211/001 , C21D2211/008 , C22C38/002 , C22C38/04 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46
摘要： A martensitic stainless steel provided includes C: 0.01-0.1% and Cr: 9-15%, and the retained austenite phase has a thickness not more than 100 nm in such a manner that the X-ray integral intensities of 111γ and 110α satisfy the following formula (a): 0.005≦111γ/(111γ+110α)≦0.05 (a) Such a metal structure can be obtained by the following procedure: the steel is heated at a temperature of the Ac3 point or more, and then cooled from 800° C. to 400° C. at a cooling rate of not less than 0.08° C./sec and further cooled down to 150° C. at a cooling rate of not more than 1° C./sec. The martensitic stainless steel according to the present invention has a relatively high carbon content and a greater toughness in spite of a high mechanical strength, and further exhibits an excellent corrosion resistance, so that it is particularly effective as the material for constructing a deep oil well.
摘要翻译： 提供的马氏体不锈钢包括C：0.01-0.1％和Cr：9-15％，并且残留奥氏体相的厚度不大于100nm，使得111gamma和110alpha的X射线积分强度满足 下式（a）：0.005 <= 111gamma /（111gamma + 110alpha）这样的金属结构可以通过以下步骤获得：将钢在Ac 3点以上的温度下加热，然后从800℃冷却。 至400℃，冷却速度不低于0.08℃/秒，并以不超过1℃/秒的冷却速度进一步冷却至150℃。 本发明的马氏体系不锈钢虽然具有较高的机械强度，但具有较高的碳含量和较高的韧性，并且还具有优异的耐腐蚀性，因此作为构成深油井的材料特别有效 。
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8.发明申请Mandrel Bar for High-Alloy Rolling, Method for Surface Treating a Mandrel Bar, Method for Producing Mandrel Bar, and Method for Operating Seamless Pipe Mill 有权用于高合金轧制的芯棒，用于表面处理芯棒的方法，用于生产芯棒的方法以及操作无缝管铣的方法公开(公告)号：US20090071221A1
公开(公告)日：2009-03-19
申请号：US12236970
申请日：2008-09-24
申请人： Sumio Iida , Yasuyoshi Hidaka , Mitsuru Yoshizawa , Koji Nakaike
发明人： Sumio Iida , Yasuyoshi Hidaka , Mitsuru Yoshizawa , Koji Nakaike
CPC分类号： B21B25/00 , B21B3/02 , B21B17/02 , B21B17/04 , B21B23/00 , B21B25/04 , C21D8/10 , C21D8/105 , C21D9/08 , Y10S72/70
摘要： A method for surface treating a mandrel bar used for hot rolling of high-alloy seamless steel pipe is provided. The method includes heat treating the mandrel bar to develop a scale, and after heat treatment, rolling ordinary steel comprising 8% or less of chromium for at least 50 passes. This achieves a mandrel bar for rolling high-alloy steel possessing both durability and superior resistance to seizure
摘要翻译： 提供了一种用于表面处理用于高合金无缝钢管的热轧的芯棒的方法。 该方法包括热处理芯棒以形成刻度，并且在热处理之后，将包含8％或更少的铬的普通钢轧制至少50次。 这实现了具有耐久性和优异的抗咬合性的用于轧制高合金钢的芯棒
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公开(公告)号：US20080112837A1
公开(公告)日：2008-05-15
申请号：US11905877
申请日：2007-10-05
IPC分类号： C22C38/40
摘要： Heat-resistant steel excellent in high-temperature long-term creep strength and creep-fatigue strength is provided. This heat-resistant steel comprises C: 0.01 to 0.13%, Si: 0.15 to 0.50%, Mn: 0.2 to 0.5%, P: not higher than 0.02%, S; not higher than 0.005%, Cr: exceeding 8.0% but lower than 12.0%, Mo: 0.1 to 1.5%, W: 1.0 to 3.0%, V: 0.1 to 0.5%, Nb: 0.02 to 0.10%, sol. Al: not higher than 0.015%, N: 0.005 to 0.070%, Nd: 0.005 to 0.050% and B: 0.002 to 0.015%, with the balance Fe and impurities; the content of Ni is lower than 0.3%, the content of Co is lower than 0.3% and the content of Cu is lower than 0.1% among the impurities; the steel contains Nd inclusions at a Nd inclusion density of not lower than 10000 inclusions/mm3. This steel may contain, in addition to the above-specified components, one or more elements of Ta, Hf, Ti, Ca and Mg.
摘要翻译： 提供了耐高温长期蠕变强度和蠕变疲劳强度优异的耐热钢。 该耐热钢包含C：0.01〜0.13％，Si：0.15〜0.50％，Mn：0.2〜0.5％，P：0.02以下，S： 不超过0.005％，Cr：超过8.0％但低于12.0％，Mo：0.1〜1.5％，W：1.0〜3.0％，V：0.1〜0.5％，Nb：0.02〜0.10％ Al：0.015％以下，N：0.005〜0.070％，Nd：0.005〜0.050％，B：0.002〜0.015％，余量为Fe和杂质; Ni的含量低于0.3％，Co含量低于0.3％，Cu含量低于0.1％。 钢含有Nd夹杂物，Nd含量密度不低于10000夹杂物/ mm 3。 除了上述规定的成分之外，该钢还含有Ta，Hf，Ti，Ca，Mg中的一种以上的元素。
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公开(公告)号：US08808473B2
公开(公告)日：2014-08-19
申请号：US13472640
申请日：2012-05-16
申请人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
发明人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
IPC分类号： C22C19/05
CPC分类号： C22C19/055
摘要： An austenitic heat resistant alloy includes, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 10.14 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 0.05%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 1.36% or less, Ti: 3% or less, and Nb: 3% or less, and the balance being Fe and impurities. The contents of P and S in the impurities are P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1≦4×Al+2×Ti+Nb≦12 and P+0.2×Cr×B≦0.035, where an element in the Formulas represents the content by mass percent.
摘要翻译： 奥氏体系耐热合金的质量百分比含有：C：0.15％以下，Si：2％以下，Mn：3％以下，Ni：40〜60％，Co：10.14〜25％，Cr：15％ 以上且小于28％，Mo：12％以下，W：小于0.05％，其总含量为0.1〜12％，Nd：0.001〜0.1％，B：0.0005〜0.006％ ，N：0.03％以下，O：0.03％以下，Al：1.36％以下，Ti：3％以下，Nb：3％以下中的至少一种，余量为Fe和杂质。 杂质中P和S的含量为P：0.03％以下，S：0.01％以下。 合金满足1＆nlE; 4×Al + 2×Ti + Nb＆nlE; 12和P + 0.2×Cr×B＆nlE; 0.035，式中的元素表示质量百分含量。
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