公开(公告)号：US06250125B1

公开(公告)日：2001-06-26

申请号：US09526480

申请日：2000-03-15

申请人： Shigeharu Ukai ,  Shunji Mizuta ,  Tsunemitsu Yoshitake ,  Shigeki Hagi ,  Noriaki Hirohata ,  Katsuhiro Abe ,  Takanari Okuda

发明人： Shigeharu Ukai ,  Shunji Mizuta ,  Tsunemitsu Yoshitake ,  Shigeki Hagi ,  Noriaki Hirohata ,  Katsuhiro Abe ,  Takanari Okuda

IPC分类号： B21B2102

CPC分类号： B21B21/02 ,  B21B17/06 ,  B21B21/005

摘要： A method of producing an iron-based dispersion-strengthened alloy tube (2-1) by utilizing a rolling machine having grooved rolls (5, 5-1) and a mandrel (9)for forming the tube (2-1) from a raw rolling tube (2). In the method, a length of contact between a rolling surface (6, 6-1) of a caliber formed by the grooved rolls and an outer circumference of the rolling tube is set to be 0.9 times or more of a circumferential length of the rolling tube over the entire area of the rolling region. It is preferred that the method be performed by a Pilger type rolling machine.

摘要翻译： 通过利用具有开槽辊（5,5-1）的轧制机和用于从管（2-1）形成管（2-1）的心轴（9）从铁基分散强化合金管（2-1）制造铁基分散强化合金管 生轧管（2）。 在该方法中，由带槽辊形成的口径的滚动面（6,6-1）与轧制管的外周之间的接触长度设定为轧制的圆周长度的0.9倍以上 在轧制区域的整个区域上管。 该方法优选由皮尔格式滚压机进行。

公开(公告)号：US4960562A

公开(公告)日：1990-10-02

申请号：US436785

申请日：1989-11-15

申请人： Takanari Okuda ,  Shigeo Nomura ,  Itaru Shibahara ,  Yoshinori Tateishi ,  Susumu Hirano ,  Hiroshi Teranishi ,  Masayuki Fujiwara ,  Toshio Nishida

发明人： Takanari Okuda ,  Shigeo Nomura ,  Itaru Shibahara ,  Yoshinori Tateishi ,  Susumu Hirano ,  Hiroshi Teranishi ,  Masayuki Fujiwara ,  Toshio Nishida

IPC分类号： B22F7/04 ,  C22C32/00 ,  C22C33/02 ,  G21C3/07 ,  G21C3/20

CPC分类号： C22C32/0026 ,  C22C33/0228 ,  G21C3/07 ,  Y02E30/40 ,  Y10T29/49391 ,  Y10T29/531

摘要： A dispersion strengthened ferritic steel cladding tube for use in a nuclear reactor and having a double-layer structure is provided. The cladding tube comprises a tube body made of a dispersion strengthened ferritic steel having a ceramic dispersed therein and containing 8 to 13% by weight of chromium. The inner surface of the tube body is lined with a ferritic steel containing 18 to 30% by weight of chromium. The cladding tube has not only excellent compatibility with a mixed oxide fuel but also excellent high temperature strength and swelling resistance.A method of producing the cladding tube using powder metallurgy is also provided.

摘要翻译： 提供了一种用于核反应堆并具有双层结构的分散强化铁素体钢包层管。 包覆管包括由分散强化铁素体钢制成的管体，其中分散有陶瓷并含有8至13重量％的铬。 管体的内表面衬有含有18〜30重量％铬的铁素体钢。 包覆管不仅具有与混合氧化物燃料的良好的相容性，而且具有优异的高温强度和耐溶胀性。 还提供了使用粉末冶金制造包层管的方法。

公开(公告)号：US4963200A

公开(公告)日：1990-10-16

申请号：US338932

申请日：1989-04-11

申请人： Takanari Okuda ,  Shigeo Nomura ,  Itaru Shibahara ,  Yuji Enokido ,  Masayuki Fujiwara ,  Toshio Nishida ,  Hiroshi Teranishi ,  Susumu Hirano ,  Aturou Iseda ,  Motoharu Nakajima

发明人： Takanari Okuda ,  Shigeo Nomura ,  Itaru Shibahara ,  Yuji Enokido ,  Masayuki Fujiwara ,  Toshio Nishida ,  Hiroshi Teranishi ,  Susumu Hirano ,  Aturou Iseda ,  Motoharu Nakajima

IPC分类号： C22C32/00 ,  C22C33/02

CPC分类号： C22C33/0228 ,  C22C32/0026 ,  C22C33/0285 ,  B22F2003/208 ,  B22F2003/248 ,  B22F2009/041 ,  B22F2998/10

摘要： A dispersion strenghened ferritic steel having excellent ductility and toughness which has been heat treated to produce a matrix having a tempered martensitic structure composed of 0.05 to 0.25% by weight of carbon, 0.1% by weight or less of silicon , 0.1% by weight or less of manganese, 8 to 12% by weight of chromium, 0.1 to 4.0% by weight in total of molybdenum and tungsten, and 0.02% by weight or less of oxygen (exclusive of oxide particles) with the balance being iron and inevitable impurities and, homogeneously dispersed in the matrix, composite oxide particles comprising Y.sub.2 O.sub.3 and TiO.sub.2 in an amount of 0.1 to 1.0% by weight in total of Y.sub.2 O.sub.3 and TiO.sub.2 and a TiO.sub.2 to Y.sub.2 O.sub.3 molar ratio of 0.5 to 2.0.

摘要翻译： 分散强化了具有优异的延展性和韧性的铁素体钢，其经过热处理以制备具有由0.05-0.25重量％的碳，0.1重量％或更少的硅，0.1重量％以下的回火马氏体组成的基体 的锰，8〜12重量％的铬，0.1〜4.0重量％的钼和钨，0.02重量％以下的氧（不包含氧化物粒子），余量为铁和不可避免的杂质， 均匀分散在基质中，包含Y2O3和TiO2的总重量为0.1〜1.0重量％，TiO 2与Y 2 O 3摩尔比为0.5〜2.0的Y2O3和TiO2的复合氧化物粒子。