公开(公告)号：EP3394874A1

公开(公告)日：2018-10-31

申请号：EP16880096.9

申请日：2016-12-22

申请人： Thermatool Corp.

发明人： IGNATOWSKI, Thomas G. ,  NALLEN, Michael A. ,  FRAME, Lesley D.

IPC分类号： H01J19/16 ,  H02M7/48

CPC分类号： H02M5/458 ,  B23K11/0873 ,  B23K11/241 ,  B23K13/025 ,  B23K13/08 ,  B23K2101/04 ,  H02M7/5387 ,  Y02B70/1441

摘要： A high frequency power supply system provides highly regulated power and frequency to a workpiece load where the highly regulated power and frequency can be independent of the workpiece load characteristics by inverter switching control and an inverter output impedance adjusting and frequency control network that can include precision variable reactors with a geometrically-shaped moveable insert core section and a stationary split-bus section with a complementary geometrically-shaped split bus section and split electric terminal bus section where the insert core section can be moved relative to the stationary split-bus section to vary the inductance of the variable reactors.

公开(公告)号：EP3239316A1

公开(公告)日：2017-11-01

申请号：EP15872198.5

申请日：2015-12-15

申请人： JFE Steel Corporation

发明人： GOTO, Sota ,  OKABE, Takatoshi ,  OKAZAKI, Yukihiko

IPC分类号： C22C38/00 ,  B21C37/08 ,  C21D8/02 ,  C21D9/08 ,  C21D9/50 ,  C22C38/14 ,  C22C38/58

CPC分类号： C21D9/50 ,  B21B19/14 ,  B21B23/00 ,  B21C37/08 ,  B23K11/0873 ,  B23K2101/06 ,  B23K2103/04 ,  C21D6/001 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0263 ,  C21D9/08 ,  C21D9/46 ,  C21D2211/002 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  F16L9/17

摘要： A high-strength high-toughness electric-resistance-welded steel pipe having high resistance to post-weld heat treatment is provided.
A hot-rolled steel plate serving as a material is subjected to roll forming so as to have a generally circular cross section and is subjected to electric resistance welding to form an electric-resistance-welded steel pipe. The electric-resistance-welded portion of the electric-resistance-welded steel pipe is then subjected to in-line heat treatment. The electric-resistance-welded steel pipe is then subjected to reducing rolling such that the circularity of an end portion of the steel pipe is 0.6% or less. The hot-rolled steel plate serving as a material has a composition containing C: 0.01% to 0.12%, Si: 0.05% to 0.50%, Mn: 1.0% to 2.2%, P: 0.03% or less, S: 0.005% or less, Al: 0.001% to 0.10%, N: 0.006% or less, Nb: 0.010% to 0.100%, and Ti: 0.001% to 0.050% and has a structure composed of 90% or more by volume of a bainitic ferrite phase as a main phase and 10% or less (including 0%) by volume of a second phase, the bainitic ferrite phase having an average grain size of 10 µm or less, the structure containing fine Nb precipitates having a particle size of less than 20 nm dispersed in a base material portion, the ratio (%) of the fine Nb precipitates to the total amount of Nb being more than 75% on a Nb equivalent basis. A thick-walled electric-resistance-welded steel pipe thus manufactured can have high strength and toughness and high resistance to post-weld heat treatment and is less likely to be broken while placed as a deep-well conductor casing.

摘要翻译： 提供一种耐焊接后热处理性高的高强度高韧性电阻焊钢管。 用作材料的热轧钢板经过辊轧成型以具有大致圆形的横截面并且经受电阻焊接以形成电阻焊接钢管。 然后对电阻焊钢管的电阻焊接部分进行在线热处理。 然后对电阻焊钢管进行减径轧制，以使钢管端部的圆形度为0.6％以下。 作为材料的热轧钢板具有含有C：0.01〜0.12％，Si：0.05〜0.50％，Mn：1.0〜2.2％，P：0.03％以下，S：0.005％或 ，Al：0.001〜0.10％，N：0.006％以下，Nb：0.010〜0.100％，Ti：0.001〜0.050％，具有贝氏体铁素体相的90体积％以上的组织 作为主相且含有10％以下（包含0％）的第2相的平均结晶粒径为10μm以下的贝氏体铁素体相，含有粒径小于20μm的微细Nb析出物的组织 nm分散在基材部分中的情况下，以Nb当量为基准，微细Nb析出物相对于Nb总量的比例（％）大于75％。 如此制造的厚壁电阻焊钢管可以具有高强度和韧性，并且对焊接后热处理具有高耐受性，并且在作为深井导体外壳放置时不太可能被破坏。

公开(公告)号：EP2839919B1

公开(公告)日：2017-11-01

申请号：EP13779048.1

申请日：2013-04-05

申请人： Nippon Steel & Sumitomo Metal Corporation

发明人： HASEGAWA, Noboru ,  FUKAMI, Toshisuke ,  MIZUHASHI, Nobuo ,  HAMATANI, Hideki ,  KARUBE, Yoshifumi ,  MIURA, Takao ,  TANAKA, Kimiharu ,  YAMAMOTO, Kazuto

IPC分类号： B23K13/00 ,  B21B37/74 ,  B21B37/78 ,  B21C37/08 ,  B23K13/02 ,  B23K13/08

CPC分类号： B23K11/253 ,  B21B37/74 ,  B21B37/78 ,  B21C37/08 ,  B23K11/0873 ,  B23K13/025 ,  B23K13/08

公开(公告)号：EP3199657A1

公开(公告)日：2017-08-02

申请号：EP15843336.7

申请日：2015-08-06

申请人： JFE Steel Corporation

发明人： MATSUKI, Yasuhiro

IPC分类号： C22C38/00 ,  B23K11/00 ,  C21D8/02 ,  C22C38/16 ,  C22C38/54 ,  B21B1/26

CPC分类号： F16L9/165 ,  B21B1/26 ,  B21C37/08 ,  B21C37/083 ,  B23K11/0873 ,  B23K11/16 ,  B23K2101/04 ,  B23K2101/06 ,  B23K2103/04 ,  C21D6/001 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/105 ,  C21D9/08 ,  C21D9/52 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  F16L9/17

摘要： A steel strip for an electric-resistance-welded steel pipe or tube having a strength of X70 grade or more and excellent HIC resistance and SSC resistance is provided. A steel strip for an electric-resistance-welded steel pipe or tube has a chemical composition containing, in mass%: C: 0.02% to 0.06%; Si: 0.1% to 0.3%; Mn: 0.8% to 1.3%; P: 0.01% or less; S: 0.001% or less; V: 0.04% to 0.07%; Nb: 0.04% to 0.07%; Ti: 0.01% to 0.04%; Cu: 0.1% to 0.3%; Ni: 0.1% to 0.3%; Ca: 0.001% to 0.005%; Al: 0.01% to 0.07%; and N: 0.007% or less, with a balance being Fe and incidental impurities, contents of C, Nb, V, and Ti satisfying the following Expression (1) C − 12 Nb / 92.9 + V / 50.9 + Ti / 47.9 ≤ 0.03 % wherein a ferrite area ratio is 90% or more.

摘要翻译： 本发明提供强度为X70级以上，耐HIC性，耐SSC性优异的电焊钢管用钢带。 本发明的电焊钢管用钢带的成分组成以质量％计含有C：0.02〜0.06％。 Si：0.1〜0.3％ Mn：0.8％至1.3％; P：0.01％以下; S：0.001％以下; V：0.04％至0.07％; Nb：0.04〜0.07％ Ti：0.01〜0.04％ Cu：0.1〜0.3％ Ni：0.1〜0.3％ Ca：0.001〜0.005％ Al：0.01％至0.07％; 及N：0.007％以下，余量为Fe和不可避免的杂质构成，C，铌，钒，和Ti的含量满足下述式（1）C-12NB / 92.9 + V / 50.9 +钛/47.9≤0.03％ 其中铁氧体面积比为90％以上。

公开(公告)号：EP2891537B1

公开(公告)日：2016-12-28

申请号：EP12883858.8

申请日：2012-08-31

申请人： Nippon Steel & Sumitomo Metal Corporation

发明人： HAMATANI, Hideki ,  WATANABE, Fuminori ,  TSUKAKOSHI, Kazumoto ,  MIZUHASHI, Nobuo ,  ASANO, Takuya ,  MIURA, Takao ,  MOTOYOSHI, Takashi ,  YAMAMOTO, Kazuto ,  TANAKA, Kimiharu

IPC分类号： B23K13/06 ,  B23K11/00

CPC分类号： B23K13/06 ,  B23K11/0006 ,  B23K11/0873 ,  B23K11/36 ,  B23K13/046 ,  B23K2201/06 ,  B23K2201/10 ,  B23K2203/04

公开(公告)号：EP2902519A4

公开(公告)日：2016-06-01

申请号：EP13840703

申请日：2013-09-27

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： SHINOHARA YASUHIRO ,  NAGAI KENSUKE ,  OZAKI MASAKAZU

IPC分类号： C22C38/00 ,  B21B3/00 ,  B21C37/08 ,  B23K13/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/14 ,  C22C38/58

CPC分类号： F16L9/02 ,  B23K11/002 ,  B23K11/0873 ,  B23K35/38 ,  C21D9/46 ,  C21D9/50 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/26 ,  C22C38/28 ,  Y10T428/12292

摘要： An electric resistance welded steel pipe which has sufficient strength and low-temperature toughness and a low yield ratio and which is suitable as a line pipe to be laid in depths of the sea, characterized in that: the composition of the base material contains, in mass%, 0.05 to 0.10% of C, 1.00 to 1.60% of Mn, and 0.005 to less than 0.035% of Nb, and has a Ceq value of 0.23 to 0.38; and the metal microstructure of the base material contains 3 to 13% of martensite in area fraction with the balance being ferrite.

公开(公告)号：EP2123389B1

公开(公告)日：2016-04-13

申请号：EP08711419.5

申请日：2008-02-08

申请人： JFE Steel Corporation

发明人： INOUE, Tomohiro ,  SAKASHITA, Shigeto ,  YUASA, Daijiro ,  YOKOYAMA, Hiroyasu ,  KENMOCHI, Kazuhito ,  IIZUKA, Yukinori

IPC分类号： B23K11/08 ,  B21C37/083 ,  B21C51/00 ,  B23K11/25 ,  G01B11/25 ,  B23K11/34 ,  B23K33/00

CPC分类号： G01B11/25 ,  B21C37/08 ,  B21C37/0826 ,  B21C37/083 ,  B23K11/0873 ,  B23K11/252 ,  B23K11/34 ,  B23K33/006 ,  B23K2201/06 ,  B23K2203/04

公开(公告)号：EP2837708A4

公开(公告)日：2015-08-12

申请号：EP13775345

申请日：2013-04-11

申请人： JFE STEEL CORP

发明人： TOYODA SHUNSUKE ,  GOTO SOTA ,  OKABE TAKATOSHI ,  INOUE TOMOHIRO ,  EGI MOTOHARU ,  YONEMOTO ATSUSHI

IPC分类号： C22C38/04 ,  B21B3/00 ,  B21C37/08 ,  C21D1/00 ,  C21D8/02 ,  C21D8/10 ,  C21D9/08 ,  C21D9/50 ,  C22C38/14 ,  C22C38/58

CPC分类号： F16L9/02 ,  B21B3/00 ,  B21B27/06 ,  B21B27/08 ,  B21C37/08 ,  B23K11/0073 ,  B23K11/0873 ,  B32B1/08 ,  C21D1/00 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/105 ,  C21D9/08 ,  C21D9/085 ,  C21D9/50 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/58 ,  F16L9/17 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/13

摘要： There is provided a high-strength thick-walled electric resistance welded steel pipe having excellent low-temperature toughness and excellent HIC resistance and having a yield strength of 400 MPa or more. Steel is heated to and held at a temperature in the range of 1200°C to 1280°C. The steel has a chemical composition consisting of C: 0.025% to 0.084%, Si: 0.10% to 0.30%, Mn: 0.70% to 1.80%, controlled amounts of P, S, Al, N, and O, Nb: 0.001% to 0.065%, V: 0.001% to 0.065%, Ti: 0.001% to 0.033%, and Ca: 0.0001% to 0.0035% on a mass percent basis and the remainder being Fe and incidental impurities, and satisfies Pcm of 0.20 or less. The steel is hot-rolled at a rolling reduction of 20% or more in an unrecrystallization temperature range. After the completion of the hot-rolling, the steel is cooled to a finish cooling temperature of 630°C or less at a cooling rate in the range of 7°C/s to 49°C/s and is coiled at 400°C or more and less than 600°C to form a hot-rolled steel strip. The hot-rolled steel strip is subjected to roll-forming and electric resistance welding to produce an electric resistance welded steel pipe. The welded portion of the electric resistance welded steel pipe is then subjected to a heat treatment in which the welded portion is heated to a temperature in the range of 800°C to 1150°C over the total wall thickness and is then cooled to 630°C or less at an average cooling rate in the range of 7°C/s to 49°C/s. The base steel portion and the electric resistance welded portion of the resulting high-strength thick-walled electric resistance welded steel pipe have excellent low-temperature toughness and excellent HIC resistance.

公开(公告)号：EP2837708A1

公开(公告)日：2015-02-18

申请号：EP13775345.5

申请日：2013-04-11

申请人： JFE Steel Corporation

发明人： TOYODA, Shunsuke ,  GOTO, Sota ,  OKABE, Takatoshi ,  INOUE, Tomohiro ,  EGI, Motoharu ,  YONEMOTO, Atsushi

IPC分类号： C22C38/00 ,  B21B3/00 ,  B21C37/08 ,  C21D1/00 ,  C21D8/02 ,  C21D9/08 ,  C21D9/50 ,  C22C38/14 ,  C22C38/58

CPC分类号： F16L9/02 ,  B21B3/00 ,  B21B27/06 ,  B21B27/08 ,  B21C37/08 ,  B23K11/0073 ,  B23K11/0873 ,  B32B1/08 ,  C21D1/00 ,  C21D8/00 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/105 ,  C21D9/08 ,  C21D9/085 ,  C21D9/50 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/58 ,  F16L9/17 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/13

摘要： There is provided a high-strength thick-walled electric resistance welded steel pipe having excellent low-temperature toughness and excellent HIC resistance and having a yield strength of 400 MPa or more.
Steel is heated to and held at a temperature in the range of 1200°C to 1280°C. The steel has a chemical composition consisting of C: 0.025% to 0.084%, Si: 0.10% to 0.30%, Mn: 0.70% to 1.80%, controlled amounts of P, S, Al, N, and O, Nb: 0.001% to 0.065%, V: 0.001% to 0.065%, Ti: 0.001% to 0.033%, and Ca: 0.0001% to 0.0035% on a mass percent basis and the remainder being Fe and incidental impurities, and satisfies Pcm of 0.20 or less. The steel is hot-rolled at a rolling reduction of 20% or more in an unrecrystallization temperature range. After the completion of the hot-rolling, the steel is cooled to a finish cooling temperature of 630°C or less at a cooling rate in the range of 7°C/s to 49°C/s and is coiled at 400°C or more and less than 600°C to form a hot-rolled steel strip. The hot-rolled steel strip is subjected to roll-forming and electric resistance welding to produce an electric resistance welded steel pipe. The welded portion of the electric resistance welded steel pipe is then subjected to a heat treatment in which the welded portion is heated to a temperature in the range of 800°C to 1150°C over the total wall thickness and is then cooled to 630°C or less at an average cooling rate in the range of 7°C/s to 49°C/s. The base steel portion and the electric resistance welded portion of the resulting high-strength thick-walled electric resistance welded steel pipe have excellent low-temperature toughness and excellent HIC resistance.

摘要翻译： 本发明提供一种高强度厚壁电阻焊钢管具有优异的低温韧性和优良的耐HIC性，并且具有400MPa以上的屈服强度的管道。 钢被加热到并在1200℃范围内的温度为1280℃下保持 该钢的化学组成自由C：0.025％至0.084％以下，Si：0.10％〜0.30％至以下，Mn：0.70％〜1.80％，P，S，铝，N，和O，Nb的受控量：0.001％ 到0.065％，V：0.001％至0.065％以下，Ti：0.001％〜0.033％，及Ca：以质量％计，其余为的零时20分以下的Fe和不可避免的杂质，和SATIS外资企业的Pcm上0.0001％〜0.0035％。 钢进行热轧，在未再结晶在温度范围内的压下率的20％或更多英寸 热轧结束后，将钢中的7℃/ s的范围内的冷却速度冷却到630℃或更低的瓶口冷却温度至49℃/秒和在400℃下进行卷取 以上且小于600℃，以形成热轧钢带。 的热轧钢带进行辊轧成形和电阻焊接，以产生对电阻焊钢管。 电阻焊钢管的焊接部分然后进行热处理，其中所述焊接部被加热至800℃的范围内，以1150℃以上的总壁厚的温度，然后冷却至630℃ C.或在7℃/ s的范围内，以49℃/ s的平均冷却速度以下。 基体钢部分和所得到的高强度厚壁电阻焊钢管的电阻焊接部具有优异的低温韧性和优良的耐HIC性。

公开(公告)号：EP1758694A4

公开(公告)日：2007-09-19

申请号：EP05752331

申请日：2005-06-22

申请人： SMORGON STEEL LITESTEEL PRODUCTS PTY LTD

发明人： BARTLETT ROSS JOHN ,  NOLLER ALEXANDER ,  YOKOYAMA KEIJI

IPC分类号： B21D19/02 ,  B21D5/08 ,  B21D19/04 ,  B21D19/06 ,  B23K11/00 ,  B23K13/02

CPC分类号： B23K13/025 ,  B23K11/061 ,  B23K11/0873 ,  B23K2201/04 ,  E04C2003/0456

摘要： An apparatus for in-line ERW welding of hollow flange steel members in a cold forming mill comprises a seam roll stand (60) rotatably supporting at least one seam roll (68) adapted in use to guide a free edge (34a,34b) of a contoured metal strip (30) into linear alignment with a predetermined weld axis spaced from said free edge on a surface of the metal strip. The apparatus also includes a weld box stand (61) supporting at least one pair of squeeze rolls (84a,84b), in use, adapted to urge the free edge (34a,34b) when heated to a predetermined temperature into fused engagement with a correspondingly heated weld axis on the surface of the strip (30). The squeeze rolls (84a,84b) co-operate to guide the free edge through a predetermined linear trajectory substantially along an incidence axis of a subsequent weld junction between the free edge (34a,34b) and the surface of the metal strip (30) whereby energy imparted to the cold formed member is focussed by a proximity effect along the predetermined weld axis.

摘要翻译： 一种用于冷成形机中的空心法兰钢构件的在线ERW焊接的设备包括：可旋转地支撑至少一个缝合辊（68）的缝合辊支架（60），所述至少一个缝合辊（68）适用于引导以下材料的自由边缘（34a，34b）： 成型的金属带（30）与在金属带的表面上与所述自由边缘隔开的预定焊接轴线成直线对齐。 该设备还包括在使用时支撑至少一对挤压辊（84a，84b）的焊接台支架（61），其适于在加热到预定温度时推动自由边缘（34a，34b） 在条带（30）的表面上相应地加热焊接轴线。 挤压辊（84a，84b）配合以引导自由边缘基本沿着自由边缘（34a，34b）与金属带（30）的表面之间的后续焊接接头的入射轴线通过预定线性轨迹， 由此赋予冷成形构件的能量通过沿着预定焊接轴线的邻近效应而被聚焦。