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1. 发明专利

JP2004331996A Sponge iron for reducing agent, its production method and its application 审中-公开
公开(公告)号：JP2004331996A
公开(公告)日：2004-11-25
申请号：JP2003124806
申请日：2003-04-30
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： ONO TOMOSHIGE , UENOSONO SATOSHI , SONOBE AKIO , SUGIHARA YUTAKA , KOHIDA TOMOYUKI
IPC分类号： A62D3/37 , A62D101/22 , A62D101/24 , A62D101/28 , B09C1/02 , B09C1/08 , C02F1/70 , C07B35/06 , C07C21/10 , C21B13/04 , C22C38/00 , A62D3/00
摘要： PROBLEM TO BE SOLVED: To provide a sponge iron (reduced iron) which has excellent capacity of reducing organic haloid compounds and heavy metals being harmful environmental pollution materials to a human body and excellent durability and which is suitable as an environmental cleaning agent which utilizes this reducing action, and a method for producing the sponge iron which can simply produce such sponge iron at a low cost. SOLUTION: This sponge iron for a reducing agent contains 0.03 to 2 mass% sulfur. This sulfur-containing sponge iron can be produced by heating an iron source (iron oxide) at a temperature not higher than the melting point of the iron source and leaving the sulfur originating from the iron source and/or carbonaceous powder by the above content in the produced sponge iron. COPYRIGHT: (C)2005,JPO&NCIPI

2. 发明专利

JP2006089829A Iron-base powdery mixture for powder metallurgy 有权
标题翻译：用于粉末冶金的铁基粉末混合物
公开(公告)号：JP2006089829A
公开(公告)日：2006-04-06
申请号：JP2004279335
申请日：2004-09-27
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： OZAKI YUKIKO , UENOSONO SATOSHI , SUGIHARA YUTAKA
IPC分类号： B22F1/00
CPC分类号： C22C33/0228 , B22F1/0059
摘要： PROBLEM TO BE SOLVED: To provide an iron-base powdery mixture with which the machinability can be improved without bringing about the deterioration of mechanical characteristic of a sintered material.
SOLUTION: In the iron-base powdery mixture mixing the iron-base powder, powder for alloy, powder for improving the machinability and further, lubricant, as the powder for improving the machinability, manganese sulfide powder and further, calcium phosphate powder and/or hydroxyapatite powder are added. The content of the powder for improving the machinability is made to be the total 0.1-1.0 mass% to the total content of the iron-base powder, powder for alloy and the powder for improving the machinability. The calcium phosphate powder is desirable to use one or more kinds selected among tricalcium phosphate, calcium hydrogen phosphate and calcium dihydrogen phosphate. Further, a part or the whole of the iron-base powder can be used as the iron-base powder applying a segregation-preventive treatment, in which the powder for alloy and/or the powder for improving the machinability, are stuck on the surface with a binder.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种铁基粉末混合物，其可以改善可加工性，而不会导致烧结材料的机械特性的劣化。解决方案：在铁基粉末混合物中，混合铁基粉末，合金粉末，提高机械加工性的粉末，进一步地，作为提高机械加工性的粉末的润滑剂，硫化锰粉末和磷酸钙粉末和/或羟基磷灰石粉末。将用于提高切削性的粉末的含量与铁基粉末，合金粉末和用于提高切削性的粉末的总含量相比，总计为0.1-1.0质量％。磷酸钙粉末优选使用选自磷酸三钙，磷酸氢钙和磷酸二氢钙的一种或多种。此外，可以使用铁基粉末的一部分或全部作为铁基粉末，其进行防分离处理，其中用于合金和/或用于提高机械加工性的粉末的粉末粘附在表面上用粘合剂。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2004351256A Environment cleaning iron powder and its manufacturing method 审中-公开
公开(公告)号：JP2004351256A
公开(公告)日：2004-12-16
申请号：JP2003149064
申请日：2003-05-27
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： SUGIHARA YUTAKA , SONOBE AKIO , ONO TOMOSHIGE
IPC分类号： A62D3/37 , A62D101/22 , A62D101/28 , B09C1/02 , B09C1/08 , B22F1/00 , B22F9/20 , C02F1/70 , C21B13/00 , A62D3/00
摘要： PROBLEM TO BE SOLVED: To provide iron powder for cleaning the environment, which has the function of dehalogenating/decomposing an halogenated organic compound harmful to the human body in a short period of time and to provide a method for manufacturing the iron powder.
SOLUTION: This iron powder for cleaning the environment is the reduced one having the composition of ≥70 mass% and

4. 发明专利

JP2005325416A Method of compacting raw material powder for powder metallurgy 审中-公开
标题翻译：用于粉末冶金原料粉末的方法
公开(公告)号：JP2005325416A
公开(公告)日：2005-11-24
申请号：JP2004144910
申请日：2004-05-14
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： FUJINAGA MASASHI , SUGIHARA YUTAKA , SHOJI NOBUYOSHI
IPC分类号： B30B11/00 , B22F3/02
摘要： PROBLEM TO BE SOLVED: To provide a method of compacting raw material powder for powder metallurgy where, even when raw material powder is compressed under a pressure lower than the ordinary one, a compact having high density equal to that of the conventional one can be obtained.
SOLUTION: In the improvement of a powder metallurgy technique where raw material powder for powder metallurgy is packed into a die, and is compressed to form the compact, water of 0.01 to 2.0 mass% is added to the raw material powder. In this case, the addition of water is performed preferably by spraying to the metal powder or mixing therein. It can be also performed by bringing the raw material powder into contact with water vapor or with a gas having a dew point higher than the temperature of the raw material powder, or by passing the gas into the layer of the raw material powder.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种粉碎冶金原料粉末的压实方法，其中即使当原料粉末在比普通压力低的压力下被压缩时，具有与常规密度相同的高密度的压块可以获得。解决方案：在粉末冶金技术的改进中，将粉末冶金原料粉末装入模具中，并压缩成型，将原料粉末加入0.01〜2.0质量％的水。在这种情况下，优选通过喷射到金属粉末或混合其中来进行水的添加。还可以通过使原料粉末与水蒸汽或露点高于原料粉末的温度的气体接触，或者将气体通入原料粉末层来进行。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2005325373A Method for casting iron powder for magnetic material 审中-公开
标题翻译：铸造用于磁性材料的粉末的方法
公开(公告)号：JP2005325373A
公开(公告)日：2005-11-24
申请号：JP2004141950
申请日：2004-05-12
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： SONOBE AKIO , SUGIHARA YUTAKA , TAKAO TANSEI , SUZUKI YOSHITOMO
IPC分类号： C21B13/00 , B22F9/22 , H01F1/20
摘要： PROBLEM TO BE SOLVED: To provide a method for producing iron powder effectively achieving a miniaturization of a pressed-powder magnetic core at high productivity by displaying an excellent magnetic permeability in high frequency region.
SOLUTION: Mixed material of iron oxide powder and mill-scale powder, is mixed so that the iron oxide powder becomes 5-30 mass%, and the obtained mixed material 2 together with a solid-reducing agent 3 are filled into a thermal-resistant vessel 1. This is heated and a primary-reduction is performed to produce sponge iron, and this sponge iron is primarily crushed and further, screening is performed and fine granular powder having ≤75μm grain diameter is primarily classified. After finish-reducing the fine granular powder under hydrogen atmosphere, the finish-crushing is performed and further, the iron powder having ≤75μm, is finish-classified by screening.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过在高频区域显示优异的磁导率，提供一种生产铁粉的方法，其有效地实现了压粉磁心的小型化。解决方案：将氧化铁粉末和磨粒粉末的混合物混合，使得氧化铁粉末变成5-30质量％，将所得混合材料2与固体还原剂3一起填充到耐热容器1.将其加热并进行一次还原以制造海绵铁，并将该海绵铁主要压碎，进一步进行筛分，并且主要分级具有≤75μm粒径的细粒状粉末。在氢气氛下精细粉碎后，进行精细粉碎，进一步通过筛选对≤75μm的铁粉进行精细分级。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2007169713A Iron-based powdery mixture for powder metallurgy 有权
标题翻译：用于粉末冶金的基于铁的粉末混合物
公开(公告)号：JP2007169713A
公开(公告)日：2007-07-05
申请号：JP2005368835
申请日：2005-12-21
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： OZAKI YUKIKO , UENOSONO SATOSHI , SUGIHARA YUTAKA
IPC分类号： B22F1/00 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide an iron-based powdery mixture with which machinability of a sintered compact can be improved without bringing about deterioration in its mechanical properties. SOLUTION: The iron-based powdery mixture is obtained by mixing iron-based powder with powder for alloy, powder for improving machinability and further, a lubricant. As the powder for improving machinability, manganese sulfide powder with the average particle diameter of 1 to 60 μm and/or calcium fluoride powder with the average particle diameter of 1 to 60 μm is used. The powder for improving machinability is comprised by 0.1 to 1.5 mass% to the total content of the iron-based powder, the powder for alloy and the powder for improving machinability. Further, the powder for improving machinability has a grain size distribution similar to the grain size distribution of holes in an iron-based sintered compact obtained by subjecting an iron-based powdery mixture mixed with iron-based powder, powder for alloy and a lubricant to pressure-compacting and sintering. In this way, the holes in the sintered compact can be reduced, intermittent impact to a tool is reduced, and the service life of the tool is prolonged. Further, a part or the whole of the iron-base powder can be used as the iron-based powder applying a segregation-preventive treatment, in which the powder for alloy and/or the powder for improving the machinability, are stuck on the surface with a binder. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种铁基粉末混合物，其可以改善烧结体的机械加工性，而不会导致其机械性能的劣化。解决方案：铁基粉末混合物通过将铁基粉末与合金粉末，用于提高机械加工性的粉末以及润滑剂混合而获得。作为提高机械加工性的粉末，使用平均粒径为1〜60μm的硫化锰粉末和/或平均粒径为1〜60μm的氟化钙粉末。用于提高机械加工性的粉末相对于铁基粉末，合金粉末和提高机械加工性的粉末的总含量为0.1〜1.5质量％。此外，用于提高机械加工性的粉末的粒度分布与通过将与铁基粉末，合金粉末和润滑剂混合的铁基粉末混合物获得的铁基烧结体中的孔的粒度分布相似，压力压实和烧结。以这种方式，可以减少烧结体中的孔，减少对工具的间歇性冲击，延长工具的使用寿命。此外，铁基粉末的一部分或全部可以用作施加偏析防止处理的铁基粉末，其中用于合金和/或用于提高机械加工性的粉末的粉末粘附在表面上用粘合剂。版权所有（C）2007，JPO＆INPIT

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