公开(公告)号：US5556561A

公开(公告)日：1996-09-17

申请号：US370108

申请日：1995-01-09

申请人： Kaneyasu Ishikawa ,  Fumio Mitsuura ,  Fujimitsu Masuyama

发明人： Kaneyasu Ishikawa ,  Fumio Mitsuura ,  Fujimitsu Masuyama

IPC分类号： B23K9/23 ,  B23K35/30 ,  C22C19/05 ,  C22C38/00 ,  C22C38/22 ,  C22C38/26 ,  B23K35/00 ,  C22C38/40

CPC分类号： C22C38/22 ,  B23K35/304 ,  B23K35/3086 ,  B23K9/232 ,  B23K2203/04 ,  B23K2203/05

摘要： A method of forming a weld joint between an austenitic stainless steel and a ferritic steel. The ferritic steel contains 0.03 to 0.12% carbon, 0.70% or less silicon, 0.10 to 1.50% manganese, 0.030% or less phosphorus, 0.015% or less sulphur, 1.50 to 3.50% chromium, 0.40% or less molybdenum, 1.00 to 3.00% tungsten, 0.10 to 0.35% vanadium, 0.01 to 0.10% niobium, 0.030% or less Sol. aluminum, 0.020% or less boron, and 0.030% or less nitrogen.

摘要翻译： 一种在奥氏体不锈钢和铁素体钢之间形成焊接接头的方法。 铁素体钢含有0.03〜0.12％的碳，0.70％以下的硅，0.10〜1.50％的锰，0.030％以下的磷，0.015％以下的硫，1.50〜3.50％的铬，0.40％以下的钼，1.00〜3.00％ 钨，0.10〜0.35％的钒，0.01〜0.10％的铌，0.030％以下的Sol。 铝，0.020％以下的硼和0.030％以下的氮。

公开(公告)号：US5268142A

公开(公告)日：1993-12-07

申请号：US875684

申请日：1992-04-28

申请人： Yasushi Hasegawa ,  Masahiro Ohgami ,  Hisashi Naoi ,  Shuichi Funaki ,  Fujimitsu Masuyama

发明人： Yasushi Hasegawa ,  Masahiro Ohgami ,  Hisashi Naoi ,  Shuichi Funaki ,  Fujimitsu Masuyama

IPC分类号： B22D23/00 ,  C21C7/00 ,  C22C38/00 ,  C22C38/24 ,  C22C38/22 ,  B22D1/00

CPC分类号： C22C38/24 ,  C22C38/00

摘要： A high-nitrogen ferritic heat-resisting steel with high vanadium content comprises, in weight percent, 0.01-0.30% C, 0.02-0.80% Si, 0.20-1.00% Mn, 8.00-13.00% Cr, 0.005-1.00% Mo, 0.20-1.50% W, 0.30-2.00% V, and 0.10-0.50% N and being controlled to include less than 0.020% Nb, the balance being Fe and unavoidable impurities. A method of producing the steel comprises melting and equilibrating the steel components in an atmosphere of a mixed gas of a prescribed nitrogen partial pressure or nitrogen gas and thereafter casting or solidifying the resulting melt in an atmosphere controlled to have a total pressure of not less than 2.77 bar and a nitrogen partial pressure of not less than 1.0 bar, with the relationship between the nitrogen partial pressure p and the total pressure P beingP>2.77pthereby obtaining sound ingot free of blowholes.

公开(公告)号：US5204056A

公开(公告)日：1993-04-20

申请号：US923214

申请日：1992-07-31

申请人： Yasushi Hasegawa ,  Peter Ernst ,  Fujimitsu Masuyama

发明人： Yasushi Hasegawa ,  Peter Ernst ,  Fujimitsu Masuyama

IPC分类号： C22C38/00 ,  C22C38/26

CPC分类号： C22C38/26 ,  C22C38/001

摘要： A high-nitrogen ferritic heat-resisting steel comprises, in weight percent, 0.01-0.30% C, 0.02-0.80% Si, 0.20-1.00% Mn, 8.00-13.00% Cr, 0.50-3.00% W, 0.005-1.00% Mo, 0.05-0.50% V, 0.02-0.12% Nb and 0.10-0.50% N and is controlled to include not more than 0.050% P, not more than 0.010% S and not more than 0.020% O, the balance being Fe and unavoidable impurities. The steel may optionally comprise (A) one or both of 0.01-1.00% Ta and 0.01-1.00% Hf and/or (B) one or both of 0.0005-0.10% Zr and 0.01-0.10% Ti. A method of producing the steel comprises melting and equilibrating the steel components in an atmosphere of a mixed gas of a prescribed nitrogen partial pressure or nitrogen gas and thereafter casting or solidifying the melt in an atmosphere controlled to have a nitrogen partial pressure of not less than 1.0 ata and a total pressure of not less than 4.0 ata, with the relationship between the partial pressure p and the total pressure P.sub.t being10.sup.P

摘要翻译： 高氮铁素体耐热钢以重量％计含有0.01-0.30％C，0.02-0.80％Si，0.20-1.00％Mn，8.00-13.00％Cr，0.50-3.00％W，0.005-1.00％Mo ，0.05-0.50％V，0.02-0.12％Nb和0.10-0.50％N，并且控制为不大于0.050％P，不大于0.010％S和不大于0.020％O，余量为Fe和不可避免的 杂质。 钢可以任选地包含（A）0.01-1.00％的Ta和0.01-1.00％的Hf中的一种或两种，和/或（B）0.0005-0.10％的Zr和0.01-0.10％的Ti中的一种或两者。 钢的制造方法包括在预定的氮分压或氮气的混合气体的气氛中熔融和平衡钢组分，然后在控制为具有不小于等于或等于氮的分压的气氛中浇铸或固化熔体 1.0 ata，总压力不低于4.0 ata，分压p和总压力Pt之间的关系为10P

公开(公告)号：US06935552B2

公开(公告)日：2005-08-30

申请号：US10256137

申请日：2002-09-27

申请人： Nobuyoshi Komai ,  Fujimitsu Masuyama ,  Masahiro Kobayashi

发明人： Nobuyoshi Komai ,  Fujimitsu Masuyama ,  Masahiro Kobayashi

IPC分类号： G01N23/203 ,  G01M99/00 ,  G01N15/10 ,  G01N17/00 ,  G01N23/225 ,  G01N33/20 ,  B23K31/12

CPC分类号： G01N23/2251 ,  G01N17/006

摘要： A high-precision method for evaluating creep damage of high tension heat resistant steel used in high temperature exposed apparatuses involves comparing particle size behavior varying with creep damage progress of crystal grains having a crystal orientation difference of about 2 degrees or more, preferably 3 degrees or more at an evaluated part on the basis of a working curve or a working map prepared in advance by looking for the relation of grain sizes to creep damage extent. A high-precision apparatus evaluates the creep damage of high tension heat resistant steel used in high temperature exposed apparatuses. A measuring device measures particle size variation behavior of crystal grains or sub grains having a crystal orientation difference of about 2 degrees or more with regard to a specimen at the evaluated part of high tension heat resistant steel and a working curve or a working map prepared in advance by looking for the relation of the grain sizes with respect to the creep damage extent (including creep damage rates) at every level of loaded stress. The creep damage extent is evaluated by comparing the grain size variation behavior measured by the measuring device with a working curve or a working map selected on the basis of loaded stress.

摘要翻译： 用于评估在高温暴露设备中使用的高张力耐热钢的蠕变损伤的高精度方法包括比较晶体取向差为约2度以上，优选为3度的晶粒的蠕变损伤进展变化的粒径行为，或 基于工作曲线或预先准备的工作图，通过查找颗粒尺寸与蠕变损伤程度的关系，更多地在评估部分。 高精度设备评估高温暴露设备中使用的高张力耐热钢的蠕变损伤。 测量装置测量在高耐力钢的评估部分的试样和具有约2度或更高的晶体取向差的晶粒或亚晶粒的粒度变化行为，以及制备的工作曲线或工作图 通过寻找在每个负载应力水平下的颗粒尺寸与蠕变损伤程度（包括蠕变损伤率）的关系。 通过将测量装置测量的粒度变化行为与基于加载应力选择的工作曲线或工作图进行比较来评估蠕变损伤程度。

公开(公告)号：US06919534B2

公开(公告)日：2005-07-19

申请号：US10140261

申请日：2002-05-08

申请人： Nobuyoshi Komai ,  Fujimitsu Masuyama ,  Yasuhiro Ukeguchi ,  Fumio Nishi

发明人： Nobuyoshi Komai ,  Fujimitsu Masuyama ,  Yasuhiro Ukeguchi ,  Fumio Nishi

IPC分类号： B23K9/23 ,  B23K9/00 ,  B23K9/02 ,  B23K9/095 ,  B23K31/00 ,  B23K33/00

CPC分类号： B23K33/004 ,  B23K9/0026 ,  B23K9/0216

摘要： A welding method and a welded joint for high strength, temperature resistant steels produce the same strength as the base metal in the welded joint, thereby resolving strength problems in the heat affected area by making a simple change to the welding method. Additionally, this advantage is extended to high strength ferrite heat resistant steels by providing a multi-pass buildup welding method for such high strength ferrite heat resistant steels. A multi-layered cap 15a fusion area extends past the heat affected area 13 that lies outside groove 11, and the surface area of the foregoing extension that is required to impart the same level of creep strength as is inherent in the base metal is based on the relationship between the groove width and the base metal thickness shown as hatched area in FIG. 1(B).

摘要翻译： 用于高强度耐热钢的焊接方法和焊接接头产生与焊接接头中的贱金属相同的强度，从而通过简单地改变焊接方法来解决热影响区域的强度问题。 另外，通过对这种高强度的铁氧体耐热钢提供多通道积层焊接方法，可以将这种优点扩展到高强度的铁素体耐热钢。 多层盖15的融合区域延伸穿过位于凹槽11外部的热影响区域13，并且所需延伸部分所需的表面积与基底金属中固有的相同程度的蠕变强度基于 关于槽宽度和基体金属厚度之间的关系，如图1中阴影区域所示。 1（B）。

公开(公告)号：US5945064A

公开(公告)日：1999-08-31

申请号：US57813

申请日：1998-04-09

申请人： Nobuyoshi Komai ,  Takayuki Kawano ,  Fujimitsu Masuyama ,  Iwami Ishihara ,  Tomomitsu Yokoyama

发明人： Nobuyoshi Komai ,  Takayuki Kawano ,  Fujimitsu Masuyama ,  Iwami Ishihara ,  Tomomitsu Yokoyama

IPC分类号： C22C38/00 ,  B23K35/30 ,  C22C38/22 ,  C22C38/32 ,  C22C38/54 ,  F28F21/08 ,  C22C38/44 ,  C22C38/48

CPC分类号： F28F21/082 ,  B23K35/308 ,  C22C38/22 ,  C22C38/32

摘要： This invention provides a welding material for low chromium (Cr) ferritic heat-resisting steel having high toughness, wherein the chemical composition of welding metal comprises, in weight %, carbon (c) 0.04-0.1%, silicon (Si) 0.1-0.6%, manganese (Mn) 0.1-0.6%, phosphorus (P) 0.0005-0.03%, sulfur (S) 0.0005-0.015%, chromium (Cr) 1.75-2.5%, nickel (Ni) 0.01-0.8%, molybdenum (Mo) 0.05-1.5%, vanadium (V)0.01-0.5%, tungsten (W) 0.05-2%, niobium (Nb) 0.01-0.2%, tantalum (Ta) 0.01-0.5%, aluminum (Al) 0.003-0.05%, boron (B) 0.0001-0.01%, nitrogen (N) 0.003-0.03%, and the remainder comprises iron and inevitable impurities. The welding material satisfies the following formula: C+Cr/20+Mo/15+V/10+W/7+5B.ltoreq.0.8%. According to this invention, the welding material is suitable for welding low Cr ferritic heat-resisting steels having high strength such as those used in steam generators and heat exchangers of boilers, etc. which are exposed to high temperatures and high pressures, more particularly, at a high temperature of 500.degree. C. or more.

摘要翻译： 本发明提供一种具有高韧性的低铬（Cr）铁素体耐热钢的焊接材料，其中焊接金属的化学组成按重量％计含有碳（c）0.04-0.1％，硅（Si）0.1-0.6 ％，锰（Mn）0.1-0.6％，磷（P）0.0005-0.03％，硫（S）0.0005-0.015％，铬（Cr）1.75-2.5％，镍（Ni）0.01-0.8％ ）0.05-1.5％，钒（V）0.01-0.5％，钨（W）0.05-2％，铌（Nb）0.01-0.2％，钽（Ta）0.01-0.5％，铝（Al）0.003-0.05％ ，硼（B）0.0001-0.01％，氮（N）0.003-0.03％，其余为铁和不可避免的杂质。 焊接材料满足下列公式：C + Cr / 20 + Mo / 15 + V / 10 + W / 7 + 5B≤0.8％。 根据本发明，焊接材料适用于焊接高温度的低Cr铁素体耐热钢，例如在高温高压的蒸汽发生器和锅炉等的热交换器中使用的低铁素体耐热钢，更具体地说， 在500℃以上的高温下。

公开(公告)号：US5158745A

公开(公告)日：1992-10-27

申请号：US655584

申请日：1991-02-15

申请人： Yasushi Hasegawa ,  Peter Ernst ,  Fujimitsu Masuyama

发明人： Yasushi Hasegawa ,  Peter Ernst ,  Fujimitsu Masuyama

IPC分类号： B22D23/00 ,  B22D27/04 ,  C22C33/04 ,  C22C38/00 ,  C22C38/26

CPC分类号： C22C38/001 ,  C22C38/26

摘要： A high-nitrogen ferritic heat-resisting steel comprises, in weight per cent, 0.01-0.30% C, 0.02-0.80% Si, 0.20-1.00% Mn, 8.00-13.00% Cr, 0.50-3.00% W, 0.005-1.00% Mo, 0.05-0.50% V, 0.02-0.12% Nb and 0.10-0.50% N and is controlled to include not more than 0.050% P, not more than 0.010% S and not more than 0.020% O, the balance being Fe and unavoidable impurities. The steel may optionally comprise (A) one or both of 0.01-1.00% Ta and 0.01-1.00% Hf and/or (B) or both of 0.0005-0.10% Zr and 0.01-0.10% Ti. A method of producing the steel comprises melting and equilibrating the steel components in an atmosphere of a mixed gas of a prescribed nitrogen partial pressure or nitrogen gas and thereafter casting or solidifying the melt in an atmosphere controlled to have a nitrogen partial pressure of not less than 1.0 ata and a total pressure of not less than 4.0 ata, with the relationship between the partial pressure p and the total pressure P.sub.t being10.sup.P

公开(公告)号：US4799972A

公开(公告)日：1989-01-24

申请号：US917502

申请日：1986-10-10

申请人： Fujimitsu Masuyama ,  Takashi Daikoku ,  Hisao Haneda ,  Kunihiko Yoshikawa ,  Hiroshi Teranishi ,  Atsuro Iseda

发明人： Fujimitsu Masuyama ,  Takashi Daikoku ,  Hisao Haneda ,  Kunihiko Yoshikawa ,  Hiroshi Teranishi ,  Atsuro Iseda

IPC分类号： C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C21D6/00

CPC分类号： C22C38/26 ,  C22C38/22 ,  C22C38/24

摘要： A high-strength high-Cr ferritic, heat-resistant steel exhibiting improved high-temperature, long-term creep strength and a process for producing the same are disclosed. The steel consists essentially of, by weight %:C: not more than 0.2%,Si: not more than 1.0%,Mn: 0.1-1.5%,P: not more than 0.03%,S: not more than 0.03%,Ni: not more than 1.0%,Cr: 5.0-15%,Mo: 0.02-3.0%,W: not more than 4.0%,sol. Al: 0.005-0.04%,N: not more than 0.07%,at least one of V: 0.01-0.4% and Nb: 0.01-0.3%,B: 0-0.02%,at least one of Ca, Ti, Zr, Y, La, and Ce: 0-0.2%, andthe balance Fe and incidental impurities, the A.sub.cl point defined by Formula (1) below being 820.degree. or higher.A.sub.cl (.degree.C.)=765-500 C-450N+30Si-25 Mn+25 Mo+15W+11Cr+50V+30Nb-30Ni+30 sol. Al (weight %).

摘要翻译： 公开了一种表现出改善的高温，长期蠕变强度的高强度高Cr铁素体耐热钢及其制造方法。 钢基本上由重量％组成：C：不大于0.2％，Si：不大于1.0％，Mn：0.1-1.5％，P：不大于0.03％，S：0.03％以下，Ni ：1.0％以下，Cr：5.0〜15％，Mo：0.02〜3.0％，W：4.0％以下。 Al：0.005〜0.04％，N：0.07％以下，V：0.01-0.4％，Nb：0.01-0.3％，B：0〜0.02％中的至少一种，Ca，Ti，Zr， Y，La和Ce：0〜0.2％，余量为Fe和附带杂质，由式（1）定义的Acl点为820°以上。 Acl（℃）= 765-500℃-450N + 30Si-25Mn + 25Mo + 15W + 11Cr + 50V + 30Nb-30Ni + 30溶胶。 Al（重量％）。

公开(公告)号：US06379611B1

公开(公告)日：2002-04-30

申请号：US09641683

申请日：2000-08-18

申请人： Nobuyoshi Komai ,  Fujimitsu Masuyama ,  Tomomitsu Yokoyama ,  Hiroyuki Hirata ,  Kaori Kawano ,  Takao Kan

发明人： Nobuyoshi Komai ,  Fujimitsu Masuyama ,  Tomomitsu Yokoyama ,  Hiroyuki Hirata ,  Kaori Kawano ,  Takao Kan

IPC分类号： C22C3822

CPC分类号： B23K35/308 ,  B23K35/3093 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28

摘要： A high strength, low alloy, heat resistant steel having excellent weldability has an average crystal grain diameter of at most 110 &mgr;m and consists essentially of, by mass %: C: 0.03-0.15%, Si: at most 1%, Mn: at most 2%, P: at most 0.03%, S: at most 0.03%, Ni: at most 0.5%, Cu: at most 0.5%, Cr: 1.8-2.8%, V: 0.1-0.3%, Nb: 0.01-0.08%, Mo: 0.05-0.35%, W: 1.2-1.8%, Ti: 0.001-0.05%, B: 0-0.02%, Al: at most 0.1%, O: at most 0.1%, N: in an amount satisfying the formula [%N]≦[%Ti]+5[%B]+0.004, and a remainder of unavoidable impurities.

摘要翻译： 焊接性优异的高强度，低合金，耐热钢的平均结晶粒径为110μm以下，质量％以C：0.03〜0.15％，Si：1％以下，Mn：at 最多2％，P：0.03％以下，S：0.03％以下，Ni：0.5％以下，Cu：0.5％以下，Cr：1.8〜2.8％，V：0.1-0.3％，Nb： 0.08％，Mo：0.05-0.35％，W：1.2-1.8％，Ti：0.001-0.05％，B：0-0.02％，Al：至多0.1％，O：0.1％以下，N： 满足公式[％N] <= [％Ti] +5 [％B] +0.004，剩余的不可避免的杂质。

公开(公告)号：US5814274A

公开(公告)日：1998-09-29

申请号：US803595

申请日：1997-02-21

申请人： Nobuyoshi Komai ,  Fujimitsu Masuyama ,  Tomomitsu Yokoyama

发明人： Nobuyoshi Komai ,  Fujimitsu Masuyama ,  Tomomitsu Yokoyama

IPC分类号： C22C38/46 ,  C22C38/48 ,  C22C38/54 ,  C22C38/44

CPC分类号： C22C38/48 ,  C22C38/46 ,  C22C38/54

摘要： This invention provides low-Cr ferritic steels and low-Cr ferritic cast steels having excellent high-temperature strength and weldability. These low-Cr ferritic steels and low-Cr ferritic cast steels consist essentially of, on a weight percentage basis, 0.03 to 0.12% C, 0.05 to 0.7% Si, 0.05 to 1% Mn, 0.002 to 0.025% P, 0.001 to 0.015% S, 0.3 to 3% Cr, 0.01 to 1% Ni, 0.05 to 3% Mo, 0.01 to 0.5% V, 0.1 to 3% W, 0.01 to 0.2% Nb, 0.02 to 1.5% Re, 0.003 to 0.05% Al, 0.0001 to 0.01% B, 0.003 to 0.03% N, and the balance being Fe and incidental impurities, and have excellent high-temperature strength and weldability.

摘要翻译： 本发明提供具有优异的高温强度和可焊性的低Cr铁素体钢和低Cr铁素体铸钢。 这些低Cr铁素体钢和低Cr铁素体铸钢基本上由重量百分比组成，0.03〜0.12％C，0.05〜0.7％Si，0.05〜1％Mn，0.002〜0.025％P，0.001〜0.015 ％S，0.3〜3％Cr，0.01〜1％Ni，0.05〜3％Mo，0.01〜0.5％V，0.1〜3％W，0.01〜0.2％Nb，0.02〜1.5％Re，0.003〜0.05％ ，0.0001〜0.01％B，0.003〜0.03％N，余量为Fe和杂质，具有优异的高温强度和焊接性。