专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2004181527A Wire for mig welding of martensitic stainless steel pipe and welding method for the same pipe 审中-公开
公开(公告)号：JP2004181527A
公开(公告)日：2004-07-02
申请号：JP2003048530
申请日：2003-02-26
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Nippon Welding Rod Kk , 日本ウエルディング・ロッド株式会社
发明人： MIYATA YUKIO , KIMURA MITSUO , TOYOOKA TAKAAKI , YASUDA KOICHI , SANGO TETSUYA , TAKATSU TAMAO , SAITO TEIICHIRO
IPC分类号： B23K9/23 , B23K9/028 , B23K35/30 , B23K101/06 , C22C38/00 , C22C38/44 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To propose a wire for MIG (metal inert gas) welding of a martensitic stainless steel pipe and a welding method for the martensitic stainless steel pipe which provides an excellent bead profile in all-position welding and can present a weld zone having high toughness.
SOLUTION: The wire for welding contains 0.02% or less C+N, 1.0% or less Si, 0.2-3.0% Mn, 11-15% Cr, 2-10% Ni, 0.01-0.30% REM, 0.01% or less O and comprises Fe and unavoidable impurities as the remainder, and is plated with Ni on its surface and with Cu on its upper layer. In addition, the wire for welding may contain either or both of Cu and Mo, either or both of V and Ti, either or both of Co and W, and one or more of Nb, Zr, Ta and B. With the use of such wires, the martensitic stainless pipes are welded on their circumference by MIG welding using shielding gas as inert gas in a state that the ends of the martensitic stainless pipes are made to butt against each other.
COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2003266194A WIRE FOR MIG WELDING OF MARTENSITIC STAINLESS STEEL TUBE AND METHOD OF WELDING MARTENSITIC STAINLESS STEEL TUBE 审中-公开
公开(公告)号：JP2003266194A
公开(公告)日：2003-09-24
申请号：JP2003005516
申请日：2003-01-14
申请人： JFE STEEL KK , NIPPON WELDING ROD KK
发明人： MIYATA YUKIO , KIMURA MITSUO , TOYOOKA TAKAAKI , ISHII HIDEAKI , YASUDA KOICHI , SANGO TETSUYA , TAKATSU TAMAO , SAITO TEIICHIRO
IPC分类号： B23K9/173 , B23K9/23 , B23K35/02 , B23K35/30 , B23K101/06 , B23K103/04 , C22C38/00 , C22C38/40
摘要： PROBLEM TO BE SOLVED: To provide a wire for MIG (metal inert gas) welding of a martensitic stainless steel tube by which a weld zone having an excellent bead shape in all positioned welding and high toughness can be obtained, and to provide a method of welding a martensitic stainless steel tube. SOLUTION: The wire for welding has a composition containing ≤0.02% C+N, ≤1.0% Si, 0.2 to 3.0% Mn, 11 to 15% Cr, 2 to 10% Ni, 0.01 to 0.30% rare earth metals and ≤0.01% O, or further containing one or two kinds of metals selected from ≤2% Cu and ≤4% Mo, and/or one or two kinds of metals selected from Co and W by ≤4% in total, and/or proper amounts of one or more kinds of metals selected from Nb, Zr, Ta and B, and the balance Fe with inevitable impurities, and is obtained by applying plating to the surface. The edge parts of a martensitic stainless steel tube are butted by using the wire, and circumference welding is performed by MIG welding with a shield gas as an inert gas. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2001246494A WELDING MATERIAL FOR LOW CARBON MARTENSITIC STAINLESS STEEL AND ARC WELDING METHOD FOR LOW CARBON MARTENSITIC STAINLESS STEEL 失效
公开(公告)号：JP2001246494A
公开(公告)日：2001-09-11
申请号：JP2000262578
申请日：2000-08-31
申请人： KAWASAKI STEEL CO , NIPPON WELDING ROD KK
发明人： MIYATA YUKIO , KIMURA MITSUO , TOYOOKA TAKAAKI , ISHII HIDEAKI , YASUDA KOICHI , SANGO TETSUYA , TAKATSU TAMAO , OMAE TAKASHI
IPC分类号： B23K9/173 , B23K9/23 , B23K35/30 , C22C38/00 , C22C38/44
摘要： PROBLEM TO BE SOLVED: To provide a welding material for low carbon martensitic stainless steel capable of obtaining weld alloy having high toughness and excellent in corrosion resistance and to provide an arc welding method. SOLUTION: This welding material has a composition containing, by mass,

4. 发明专利

JP2007321181A Method for forming martenstic stainless steel material welded part 审中-公开
标题翻译：形成不锈钢材料焊接部分的方法
公开(公告)号：JP2007321181A
公开(公告)日：2007-12-13
申请号：JP2006150945
申请日：2006-05-31
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYATA YUKIO , KIMURA MITSUO
IPC分类号： C21D9/50 , B23K9/23 , B23K31/00 , B23K103/04 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for forming a martenstic stainless steel material welded part excellent in the intergranular stress corrosion cracking (IGSCC) resistance and the hydrogen embrittlement resistance in the heat affective zone (HAZ).
SOLUTION: When the welding part is formed by applying the welding to the martenstic stainless steel material contained by mass% of
摘要翻译：要解决的问题：提供一种形成在热感区（HAZ）中晶间应力腐蚀开裂（IGSCC）电阻和耐氢脆性优异的马氏体不锈钢材料焊接部分的方法。
解决方案：当焊接部分通过焊接到质量％<0.015％C，<0.015％N，10.0-14.0％Cr，1.0-8.0％Ni的马氏体不锈钢材料而形成时， Si，Mn，P，S，Al的合适含量，还有选自Mo，Cu，W中的一种或多种; 焊接后，通过固化P1 =（T + 273）ä20+ log（t / 3600）}定义P1的条件，施加焊后热处理（PWHT），其中， T：PWHT温度（℃），t：PWHT保持时间（s）≥15500，P2定义为P2 = 20 log t + T（A1 + 120），ä其中，A1：下限温度 C）在制造100体积％马氏体组织后，在加热保持20秒时形成≥1体积％的奥氏体相≤0，PWHT保持时间（t）在60〜100秒的范围内。这样，HAZ中的IGSCC电阻和耐氢脆性得到显着提高。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2007204789A High-strength seamless steel pipe and manufacturing method therefor 有权
标题翻译：高强度无缝钢管及其制造方法
公开(公告)号：JP2007204789A
公开(公告)日：2007-08-16
申请号：JP2006022548
申请日：2006-01-31
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： YAMAZAKI YOSHIO , MIYATA YUKIO , KIMURA MITSUO , TAKOJIMA KOZO
IPC分类号： C22C38/00 , B21B3/00 , B21B23/00 , C21D8/10 , C21D9/08 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength, high-toughness seamless steel pipe which does not need to be tempered after having been cold-worked.
SOLUTION: This seamless steel pipe has a composition including, by mass%, 0.02-0.07% C, 0.05-1.0% Si, 2.0% to 4.5% Mn, 0.030% or less P, 0.015% or less S, 0.01-0.06% Al, 0.007% or less N, 0.005% or less O, 0.05-1.0% Cr, 0.05-1.0% Mo, 0.005-0.20% Nb, 0.005% to 0.03% Ti and 0.001-0.004% B so as to satisfy the expression of (Mn+1.3Cr+1.5Mo+0.3Ni+0.6Cu)≥3.0; and has a single-phase structure of a bainitic structure, or a mixed structure including a bainitic structure of 90% or higher by an area rate and the balance a low-temperature transformation phase. The seamless steel pipe may further include one or more elements of Cu, Ni, V and Ca. Thus manufactured steel pipe shows a high tensile strength of 600 MPa or higher, high toughness and little degradation after having been cold-worked.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种在冷加工后不需要回火的高强度，高韧性的无缝钢管。解决方案：该无缝钢管具有以质量％计含有C：0.02-0.07％，Si：0.05-1.0％，Mn：2.0〜4.5％，P：0.030％以下，S：0.015％以下，S：0.01 -0.06％Al，0.007％以下N，0.005％以下O，0.05〜1.0％Cr，0.05〜1.0％Mo，0.005〜0.20％Nb，0.005％〜0.03％Ti和0.001-0.004％B，满足（Mn + 1.3Cr + 1.5Mo + 0.3Ni + 0.6Cu）≥3.0的表达式; 并且具有贝氏体结构的单相结构，或包含面积率为90％以上的贝氏体组织和余量为低温相变相的混合结构体。无缝钢管还可以包括一种或多种Cu，Ni，V和Ca元素。这样制造的钢管在冷加工后显示出600MPa以上的高抗拉强度，高韧性，降解少。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2005336601A Martensitic stainless steel tube 有权
标题翻译： MARTENSITIC不锈钢管
公开(公告)号：JP2005336601A
公开(公告)日：2005-12-08
申请号：JP2004329060
申请日：2004-11-12
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYATA YUKIO , KIMURA MITSUO , ITAKURA NORITSUGU , SHOMURA KATSUMI
IPC分类号： C22C38/00 , C22C38/40 , C22C38/58
CPC分类号： C22C38/44 , C21D1/25 , C21D6/004 , C21D9/14 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/40 , C22C38/46 , C22C38/48 , C22C38/50 , Y10T428/13
摘要： PROBLEM TO BE SOLVED: To provide a martensitic stainless steel tube excellent in the resistance to grain boundary stress corrosion cracking in a heat affected zone. SOLUTION: The martensitic stainless steel tube has a chemical composition, in mass%, wherein C: less than 0.0100%, N: less than 0.0100%, Cr: 10 to 14% and Ni: 3 to 8%, or further suitable amounts of Si, Mn, P, S and Al are contained, and further one or more of Cu: 4% or less, Co: 4% or less, Mo: 4% or less and W: 4% or less and one or more of Ti: 0.15% or less, Nb: 0.10% or less, V: 0.10% or less, Zr: 0.10% or less, Hf: 0.20% or less and Ta: 0.20% or less are contained in such a manner that Csol defined by Csol=C-1/3×Cpre is less than 0.0050%, where Cpre=12.0äTi/47.9+1/2(Nb/92.9+Zr/91.2)+1/3(V/50.9+Hf/178.5+Ta/180.9)-N/14.0}, provided that Cpre=0 is taken when Cpre COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供在热影响区域中耐晶界应力腐蚀开裂性优异的马氏体不锈钢管。解决方案：马氏体不锈钢管具有质量％的化学组成，其中C：小于0.0100％，N：小于0.0100％，Cr：10〜14％，Ni：3〜8％，或进一步包含适量的Si，Mn，P，S和Al，进一步的Cu：4％以下，Co：4％以下，Mo：4％以下，W：4％以下，以下的Ti：0.15％以下，Nb：0.10％以下，V：0.10％以下，Zr：0.10％以下，Hf：0.20％以下，Ta：0.20％以下 Csol = C-1/3×Cpre定义的C sol小于0.0050％，其中Cpre =12.0äTi/ 47.9 + 1/2（Nb / 92.9 + Zr / 91.2）+1/3（V / 50.9 + Hf / 178.5 + Ta / 180.9）-N / 14.0}，条件是当Cpre <0时取CpRe = 0。磁性不锈钢管还可以含有Ca，Mg，REM和B中的一种或多种。上述组合物可以防止在热影响区域中出现的晶界应力腐蚀开裂。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005060795A Method for producing high strength and high toughness seamless steel tube for air bag 有权
标题翻译：用于生产用于空气袋的高强度和高韧性无缝钢管的方法
公开(公告)号：JP2005060795A
公开(公告)日：2005-03-10
申请号：JP2003294458
申请日：2003-08-18
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYATA YUKIO , YAMAZAKI YOSHIO , ARAYA MASATOSHI , KIMURA MITSUO
IPC分类号： B21C1/22 , B60R21/26 , B60R21/268 , C21D8/10 , C21D9/08 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a high strength, high toughness and high workability seamless steel tube as a inflater having ≥900 MPa tensile strength and the high toughness showing ductility in a drop hammer test at -40°C to semi-cut steel tube. SOLUTION: A cold-drawing treatment is applied to the seamless steel tube having the composition containing, by mass%, 0.05-0.15% C, ≤2.0% Si, 2.0-5.0% Mn, ≤0.1% P, ≤0.01% S, ≤0.1% Al, ≤0.01% N and further, one or more kinds among ≤0.1% Ti, ≤0.1% Nb and ≤0.1% V. Then, before or after cold-drawing treatment, an annealing treatment for heating to the temperature in the range of 860-1,000°C and air-cooling, can be applied. Further, one or more kinds among Cu, Ni, Cr, Mo, B and/or one or two kinds of Ca and REM, can be contained. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种制造高强度，高韧性和高加工性的无缝钢管作为具有≥900MPa拉伸强度的充气机和在-40°的跌落锤试验中显示延展性的高韧性的方法 C到半切钢管。解决方案：对具有以质量％计含有0.05-0.15％C，≤2.0％Si，2.0-5.0％Mn，≤0.1％P，≤0.01的组成的无缝钢管进行冷拉伸处理％S，≤0.1％Al，≤0.01％N，另外，≤0.1％Ti，≤0.1％Nb和≤0.1％V中的一种或多种。然后，在冷拉伸处理之前或之后，进行加热退火处理在860-1000℃的范围内的温度和空气冷却，可以应用。此外，可以含有Cu，Ni，Cr，Mo，B中的一种或多种，和/或一种或两种Ca和REM。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2004027351A Method for producing high strength and high toughness martensitic stainless steel seamless pipe 有权
公开(公告)号：JP2004027351A
公开(公告)日：2004-01-29
申请号：JP2002221633
申请日：2002-07-30
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYATA YUKIO , KIMURA MITSUO , TOYOOKA TAKAAKI
IPC分类号： C21D8/10 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a martensitic stainless steel seamless pipe having high strength and high toughness and little anisotropy.
SOLUTION: A martensitic stainless steel base stock is heated to austenitic zone and cooled after forming to a pipe stock with a piercing and a extension-rolling to substantially make this structure to martensite. Successively, the pipe stock is reheated to temperature in two phase region, and cooled after applying a finish-rolling at the starting temperature T of rolling in the range of the Ac
1 transforming point-Ac
3 transforming point to make the product pipe, and successively, a tempering is applied at not higher than the Ac
1 transforming point. Then, it is desirable that the finish-rolling satisfying 800 ≤ T - 0.625R ≤ 850 to the starting temperature T of rolling in the temperature of the Ac
1 transforming point-the Ac
3 transforming point and a cross sectional area reducing ratio R at 10-90%.
COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2006110585A Method for manufacturing circumferential welding joint of martensitic stainless steel pipe having excellent inter-granular stress corrosion cracking resistance 有权
标题翻译：具有优异的颗粒间应力腐蚀破坏电阻的马氏体不锈钢管的制造焊接接头的方法
公开(公告)号：JP2006110585A
公开(公告)日：2006-04-27
申请号：JP2004299279
申请日：2004-10-13
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYATA YUKIO , KIMURA MITSUO
IPC分类号： B23K9/00 , B23K9/23 , B23K101/10 , B23K103/04 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a circumferential welding joint of a steel pipe having excellent inter-granular stress corrosion cracking resistance.
SOLUTION: When the circumferential welding joint is formed by butting ends of martensitic stainless steel pipes to each other and by carrying out the welding operation composed of multilayer welding passes in the circumferential direction, the composition of the steel pipe is limited to 0.010 mass% P. By this composition, the generation of the inter-granular stress corrosion cracking in the welding heat affected zone of the circumferential welding joint can be easily prevented. Further, it is preferable that the martensitic stainless steel pipes to be employed contain 0.015 mass% or less C, 0.015 mass% or less N, 10 to 14 mass% Cr, 3 to 8 mass% Ni, and an appropriate quantity of Si, Mn, S, and Al, and further contain one or more elements of 1 to 4 mass% Cu, 1 to 4 mass% Co, 1 to 4 mass% Mo, and 1 to 4 mass% W, one or more elements of 0.15 mass% or less Ti, 0.10 mass% or less Nb, 0.10 mass% or less V, 0.10 mass% or less Zr, 0.20 mass% or less Hf, and 0.20 mass% or less Ta, one or more elements of Ca, Mg, rare earth metal (REM), and B, and the balance of Fe and unavoidable impurities.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有优异的颗粒间应力腐蚀开裂性的钢管的圆周焊接接头。解决方案：当圆周焊接由马氏体不锈钢管的对接端构成并且通过在圆周方向上执行由多层焊道组成的焊接操作，钢管的组成被限制为0.010 通过该组成，可以容易地防止在周向焊接接头的焊接热影响区域产生颗粒间应力腐蚀开裂。另外，优选使用马氏体系不锈钢管，C：0.015质量％以下，N：0.015质量％以下，Cr：10〜14质量％，Ni：3〜8质量％，Si： Mn，S和Al，还含有1〜4质量％Cu，1〜4质量％Co，1〜4质量％Mo和1〜4质量％W的1种以上的元素，0.15以上的1种以上的元素质量％以下Ti，0.10质量％以下Nb，0.10质量％以下V，0.10质量％以下Zr，0.20质量％以下Hf和0.20质量％以下Ta，一种以上的Ca，Mg ，稀土金属（REM）和B，余量为Fe和不可避免的杂质。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2006068757A Manufacturing method of circumferential weld joint of martensitic stainless steel tube 有权
标题翻译：马氏体不锈钢管的圆周焊接接头的制造方法
公开(公告)号：JP2006068757A
公开(公告)日：2006-03-16
申请号：JP2004253106
申请日：2004-08-31
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYATA YUKIO , KIMURA MITSUO , SHOMURA KATSUMI
IPC分类号： B23K9/23 , B23K9/00 , B23K9/028 , B23K9/095 , B23K31/00 , B23K101/06 , B23K103/04 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a circumferential weld joint of a steel tube having a heat-affected zone with excellent intergranular stress corrosion cracking resistance.
SOLUTION: When forming a circumferential weld by butting ends of martensitic stainless steel tubes to each other, and performing the welding consisting of a plurality of weld passes in the circumferential direction, the welding is performed while adjusting the subsequent weld pass so that the heat cycle to improve the intergranular stress corrosion cracking resistance is applied to a HAZ (heat affected zone) heated so that the peak temperature Tp of an inner surface layer of the steel tubes is ≥950°C by the welding heat cycle based on at least one welding pass. More specifically, the weld pass of the final layer is the weld pass exceeding A1 point which is the lower limit temperature of generating the austenitic phase of ≥1vol.%. Further, at least one weld pass out of the subsequent weld pass is the weld pass with Tp exceeding A1 point and ≤950°C, and the following weld pass is the weld pass with Tp not exceeding A1 point. The subsequent weld passes are the weld passes with Tp not exceeding A1 point, and the total heat input parameter Ptotal of the subsequent weld passes is ≤12,500 or ≥14,500.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有优异的晶间应力腐蚀开裂性的具有热影响区的钢管的圆周焊接接头的制造方法。解决方案：当通过马氏体不锈钢管的对接端形成周向焊接，并且在圆周方向上执行由多个焊道组成的焊接时，进行焊接，同时调整随后的焊道，使得将加热的HAZ（热影响区）的热循环施加到被加热的HAZ（热影响区），使得通过焊接热循环，钢管的内表面层的峰值温度Tp为≥950℃ 至少一个焊接通道。更具体地说，最终层的焊接通道是超过A1点的焊道，其是产生≥1vol％的奥氏体相的下限温度。此外，随后的焊接通道中的至少一个焊缝通过Tp超过A1点和≤950℃的焊缝，并且随后的焊道通过为Tp不超过A1点。随后的焊接通道是Tp不超过A1点的焊接通道，后续焊道的总热输入参数Ptotal≤12,500或≥14,500。版权所有（C）2006，JPO＆NCIPI

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式