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81. 发明专利

JPS6112981B2 JPS6112981B2 - 失效
公开(公告)号：JPS6112981B2
公开(公告)日：1986-04-11
申请号：JP6455181
申请日：1981-04-27
申请人： Kubota Ltd
发明人： SUGITANI JUNICHI , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C33/00 , C22C33/04 , C22C38/00 , C22C38/48 , F16L9/02

82. 发明专利

JPS60165346A HEAT RESISTANT CAST ALLOY HAVING HIGH CREEP BREAKING STRENGTH AND CARBURIZING RESISTANCE 失效
公开(公告)号：JPS60165346A
公开(公告)日：1985-08-28
申请号：JP2250584
申请日：1984-02-08
申请人： KUBOTA LTD
发明人： TAKAHASHI MAKOTO
IPC分类号： C22C19/05 , C22C30/00 , C22C38/00 , C22C38/54
摘要： PURPOSE:To provide the titled heat resistant cast alloy having good weldability, obtained by specifying a composition consisting of C, Si, Mn, P, S, Cr, Ni, Nb, W, Al, B, Zr, Ti and Fe. CONSTITUTION:A heat resistant cast alloy contains 0.07-0.2% C, 3.0% or less Si, 2.0% or less Mn, 0.03% or less P, 0.03% or less S, 18.0-27.0% Cr, 20.0- 40.0% Ni, 0.3-1.8% Nb, 0.3-4.0% W, 0.02-0.4% Al and 0.0005-0.01% B and additionally contains 0.02-0.5% Zr and/or 0.02-0.5% Ti and comprises the remainder of substantially Fe and has high creep breaking strength in a high temp. region, excellent carburizing resistance and good weldability, therefore, the above stated alloy is most suitable as the material of a reformer tube used in a petrochemical industry.

83. 发明专利

JPS60165342A HEAT RESISTANT CAST ALLOY HAVING HIGH CREEP BREAKING STRENGTH AND CARBURIZING RESISTANCE 失效
公开(公告)号：JPS60165342A
公开(公告)日：1985-08-28
申请号：JP2250184
申请日：1984-02-08
申请人： KUBOTA LTD
发明人： TAKAHASHI MAKOTO
IPC分类号： C22C19/05 , C22C30/00 , C22C38/00 , C22C38/54
摘要： PURPOSE:To provide the titled heat resistant cast alloy having good weldability, obtained by specifying a composition consisting of C, Si, Mn, P, S, Cr, Ni, W, Al, B, Zr, Ti, and Fe. CONSTITUTION:A heat resistant cast alloy contains 0.3-0.55% C, 3.0% or less Si, 2.0% or less Mn, 0.30% or less P, 0.03% or less S, 20.0-40.0% Ni, 0.5-0.6% W, 0.02-0.6% Al and 0.0005-0.01% B and additionally contains 0.02-0.5% Zn or 0.02-0.5% Zr 0.02-0.5% Ti and comprises the remainder of substantially Fe and has high creep breaking strength in a high temp. region, excellent carburizing resistance and good weldability.

84. 发明专利

JPS5935429B2 JPS5935429B2 - 失效
公开(公告)号：JPS5935429B2
公开(公告)日：1984-08-28
申请号：JP9137081
申请日：1981-06-13
申请人： Kubota Ltd
发明人： SUGITANI JUNICHI , YOSHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/54

85. 发明专利

JPS5935426B2 JPS5935426B2 - 失效
公开(公告)号：JPS5935426B2
公开(公告)日：1984-08-28
申请号：JP9137181
申请日：1981-06-13
申请人： Kubota Ltd
发明人： SUGITANI JUNICHI , YOSHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/50

86. 发明专利

JPS5919985B2 失效
公开(公告)号：JPS5919985B2
公开(公告)日：1984-05-10
申请号：JP11884180
申请日：1980-08-28
申请人： KUBOTA LTD
发明人： TAKAHASHI MAKOTO
IPC分类号： C22C38/00 , C22C38/44

87. 发明专利

JPS596908B2 JPS596908B2 - 失效
公开(公告)号：JPS596908B2
公开(公告)日：1984-02-15
申请号：JP360381
申请日：1981-01-12
申请人： Kubota Ltd
发明人： SUGITANI JUNICHI , YOSHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/54

88. 发明专利

JPS5864361A HEAT RESISTANT CAST STEEL 失效
公开(公告)号：JPS5864361A
公开(公告)日：1983-04-16
申请号：JP16248281
申请日：1981-10-12
申请人： KUBOTA LTD
发明人： SUGITANI JIYUNICHI , YOSHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/54
摘要： PURPOSE:To enhance the creep rupture strength at high temp., thermal impact resistance and carburization resistance by adding prescribed amounts of C, Si, Mn, Cr, Ni, W, N, Ti, Al, B and Fe. CONSTITUTION:This heat resistant cast steel consists of 0.3-0.6% C,

89. 发明专利

JPS57116763A Heat resistant cast steel 失效
标题翻译：耐热铸钢
公开(公告)号：JPS57116763A
公开(公告)日：1982-07-20
申请号：JP9137081
申请日：1981-06-13
申请人： Kubota Ltd
发明人： SUGITANI JIYUNICHI , ASHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/54
摘要： PURPOSE: To obtain a heat resistant cast steel with excellent creep rupture strength at ≥ about 1,000°C high temp., excellent thermal impact resistance, etc. by adding N, Ti and Al or B to a heat resistant cast steel contg. Cr, Ni, Nb and W.
CONSTITUTION: This heat resistant cast steel consists of, by wt., 0.3W0.6% c, ≤2.0% Si, ≤2.0% Mn, 20W30% Cr, 30W40% Ni, 0.3W1.5% Nb, 0.5W3.0% W, 0.04W0.15% N, 0.04W0.15% Ti, 0.02W0.07% Al or 0.0002W0.004% B and the balance essentially Fe. N stabilizes and strengthens the austenite phase in the form of solubilized nitrogen, and it forms nitride together with Ti, etc., makes the grains fine, and inhibits the growth in the presence of Al or B, thereby improving the strength at high temp. and the thermal impact characteristics. B strengthens the grain boundaries of the steel matrix, and it prevents a Ti-base precipitate from coarsening, contributes to the formation of such a fine precipitate, and retards the cohesion and coarsening after the precipitation, thereby enhancing the creep rupture strength.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过将N，Ti和Al或B添加到耐热铸钢件中，获得具有优异的蠕变断裂强度的耐热铸钢，在> =约1000℃高温下，优异的耐热冲击性等。 Cr，Ni，Nb和W.构成：该耐热铸钢由以重量计为0.3-0.6％c，≤2.0％Si，≤2.0％Mn，20-30％Cr，30-40％ Ni，0.3-1.5％Nb，0.5-3.0％W，0.04-0.15％N，0.04-0.15％Ti，0.02-0.07％Al或0.0002-0.004％B，余量基本上为Fe。 N稳定并加强以溶解氮的形式的奥氏体相，与Ti等一起形成氮化物，使晶粒细化，并抑制Al或B存在下的生长，从而提高高温下的强度。和热冲击特性。 B加强钢基体的晶界，防止Ti基沉淀物粗大化，有助于形成这样的微细沉淀物，并在沉淀后延缓内聚和粗化，从而提高蠕变断裂强度。

90. 发明专利

JPS57116745A Heat resistant cast steel 失效
标题翻译：耐热铸钢
公开(公告)号：JPS57116745A
公开(公告)日：1982-07-20
申请号：JP360481
申请日：1981-01-12
申请人： Kubota Ltd
发明人： SUGITANI JIYUNICHI , ASHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/54
摘要： PURPOSE: To obtain a heat resistant cast steel with remarkably improved creep rupture strength at ≥ about 1,000°C high temp., remarkably improved thermal impact resistance, etc. by adding N, Ti, Al and B to a heat resistant austenite cast steel contg. Cr, Ni, Nb, W and Mo.
CONSTITUTION: This heat resistant cast steel consists of, by wt., 0.3W0.6% C, ≤2.0% Si, ≤2.0% Mn, 20W30% Cr, 30W40% Ni, 0.3W1.5% Nb, 0.5W3.0% W, 0.2W0.8% Mo, 0.04W0.15% N, 0.04W0.15% Ti, 0.02W0.07% Al, 0.0002W0.004% B and the balance essetntially of Fe. This steel is maximally characterized by the combined addition of N, Ti, Al and B, and a great improvement in the characteristics at high temp. is attained by the addition. Even if any one of them is not added, the effect is not produced. Ti forms carbonitride together with C and N in the steel, and B and Al disperse the compound finely, strengthen the grain boundaries, and increase the intergranular cracking resistance. Thus, the characteristics at high temp. are improved remarkably.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过在耐热奥氏体铸件中添加N，Ti，Al和B，获得具有显着改善的蠕变断裂强度，耐热冲击强度> = 1000℃，耐热冲击性显着提高的耐热铸钢钢筋 Cr，Ni，Nb，W和Mo组成：该耐热铸钢由以重量计为0.3-0.6％C，<= 2.0％Si，<= 2.0％Mn，20-30％Cr， 40％Ni，0.3-1.5％Nb，0.5-3.0％W，0.2-0.8％Mo，0.04-0.15％N，0.04-0.15％Ti，0.02-0.07％Al，0.0002-0.004％B及其余量铁这种钢通过N，Ti，Al和B的组合添加最大限度地表征，并且在高温下的特性有很大的改善。通过添加获得。即使没有添加任何一个，也不会产生效果。 Ti与钢中的C和N一起形成碳氮化物，B和Al细化分散，强化晶界，提高晶间的抗龟裂性。因此，高温特性。显着改善。

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