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1. 发明专利

DE3671247D1 未知
公开(公告)号：DE3671247D1
公开(公告)日：1990-06-21
申请号：DE3671247
申请日：1986-07-18
申请人： KOBE STEEL LTD
发明人： SEKI YOSHIKAZU , WATANABE RYO , NISHIDA REIJIRO , IMANISHI NOBUYUKI
IPC分类号： C21B13/00 , C21B11/00 , C21B13/02 , C21B13/14

2. 发明专利

CA2287783C METHOD FOR THE COMPACTION OF POWDERS FOR POWDER METALLURGY 未知
公开(公告)号：CA2287783C
公开(公告)日：2005-09-20
申请号：CA2287783
申请日：1999-10-29
申请人： KOBE STEEL LTD
发明人： SATO MASAAKI , AKAGI NOBUAKI , SEKI YOSHIKAZU , TSUCHIDA TAKEHIRO , SAWAYAMA TETSUYA , YAGUCHI HIROSHI
IPC分类号： B22F1/02 , B22F3/14 , H01F1/24 , H01F41/02 , B22F3/02 , B22F1/00
摘要： A method for compacting powders for powder metallurgy comprises packing powders for powder metallurgy formulated with a lubricant in a compacting die applied with a lubricant on inner wall surfaces thereof, and subjecting the powders to warm or hot compaction. The powders contain the lubricant in an amount up to 0.2 wt%, non-inclusive of 0%, based on the total of the powders and the lubricant.

3. 发明专利

CA2287783A1 METHOD FOR THE COMPACTION OF POWDERS FOR POWDER METALLURGY 未知
公开(公告)号：CA2287783A1
公开(公告)日：2000-05-05
申请号：CA2287783
申请日：1999-10-29
申请人： KOBE STEEL LTD
发明人： SAWAYAMA TETSUYA , YAGUCHI HIROSHI , TSUCHIDA TAKEHIRO , SEKI YOSHIKAZU , AKAGI NOBUAKI , SATO MASAAKI
IPC分类号： B22F1/02 , B22F3/14 , H01F1/24 , H01F41/02 , B22F3/02 , B22F1/00
摘要： A method for compacting powders for powder metallurgy comprises packing powders for powder metallurgy formulated with a lubricant in a compacting die applied with a lubricant on inner wall surfaces thereof, and subjecting the powders to warm or hot compaction. The powders contain the lubricant in an amount up to 0.2 wt%, non-inclusive of 0%, based on the total of the powders and the lubricant.

4. 发明专利

CA1287982C METHOD FOR MELT-REDUCING IRON ORE 未知
公开(公告)号：CA1287982C
公开(公告)日：1991-08-27
申请号：CA514166
申请日：1986-07-18
申请人： KOBE STEEL LTD
发明人： SEKI YOSHIKAZU , WATANABE RYO , NISHIDA REIJIRO , IMANISHI NOBUYUKI
IPC分类号： C21B13/00 , C21B11/00 , C21B13/02 , C21B13/14
摘要： A process for direct iron making is disclosed for preventing clustering in a preliminary reducing furnace and attaining an improvement of reduction efficiency in the preliminary reducing furnace. A preliminary reduction is performed in a coated state of the iron ore surface with carbon, and H2 and hydrocarbon gas evolved in the coating treatment are fed to the preliminary reducing furnace to accelerate the reduction rate.

5. 发明专利

AU577954B2 TWO-STAGE REDUCTION OF PRECOATED IRON ORE PELLETS TO MOLTEN IRON 未知
公开(公告)号：AU577954B2
公开(公告)日：1988-10-06
申请号：AU6022186
申请日：1986-07-16
申请人： KOBE STEEL LTD
发明人： SEKI YOSHIKAZU , WATANABE RYO , NISHIDA REIJIRO , IMANISHI NOBUYUKI
IPC分类号： C21B13/00 , C21B11/00 , C21B13/02 , C21B13/14 , C21B11/02

6. 发明专利

DE10196860T1 未知
公开(公告)号：DE10196860T1
公开(公告)日：2003-12-04
申请号：DE10196860
申请日：2001-11-09
申请人： KOBELCO METAL POWDER OF AMERIC , KOBE STEEL LTD , HONDA MOTOR CO LTD
发明人： AKAGI NOBUAKI , KAWAI SHINYA , SATOH MASAAKI , SEKI YOSHIKAZU , AMANO MASAKI , USHIO HIDEAKI , SCOTT RUSSEL T
IPC分类号： B22F1/00 , B22F3/17 , C22C33/02 , C22C38/00 , C22C38/18 , B22F3/12
摘要： A mixture for a powder metallurgy product, including iron powder, graphite powder and copper (Cu) of about 3.0 to about 5.0 weight percent. Iron powder includes iron grains which contain MnS therein. The mixture contains the MnS of about 0.65 to about 1.40 weight percent. The graphite powder is contained in the mixture such that an amount of carbon (C) in the powder metallurgy product is about 0.3 to about 0.7 weight percent. An amount (wt % C) of the carbon and an amount (wt % Cu) of the copper is determined to obtain a target fatigue strength FS (MPa) and a target hardness HR (HRB) based on a relation

7. 发明专利

AU6022186A PRECOAT IRON ORE WITH CARBON BEFORE 2-STAGE REDUCTION 未知
公开(公告)号：AU6022186A
公开(公告)日：1987-01-22
申请号：AU6022186
申请日：1986-07-16
申请人： KABUSHIKI KAISHA KOBE SEIKO SHO ALSO KNOWN AS KOBE STEEL LTD
发明人： SEKI YOSHIKAZU , WATANABE RYO , NISHIDA REIJIRO , IMANISHI NOBUYUKI
IPC分类号： C21B13/00 , C21B11/00 , C21B13/02 , C21B13/14 , C21B11/02

8. 发明专利

JP2001223107A METHOD OF COMPRESSION MOLDING SOFT MAGNETIC POWDER 失效
公开(公告)号：JP2001223107A
公开(公告)日：2001-08-17
申请号：JP2000032309
申请日：2000-02-09
申请人： KOBE STEEL LTD
发明人： MITANI HIROYUKI , TSUCHIDA TAKEHIRO , SEKI YUICHI , KAGAWA MASAHIKO , SAWAYAMA TETSUYA , SEKI YOSHIKAZU , SATO MASAAKI
IPC分类号： H01F1/24 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a method of compression molding a soft magnetic power, with which the density and strength of a compression mold can be increased and a compression mold that has excellent mechanical and magnetic characteristics and does not lower electrical resistance can be manufactured. SOLUTION: An inner wall surface of a forming die is coated with a lubricate by using soft magnetic powder having a surface covered with a glass-like insulating layer containing P, Mg, B and Fe as essential components. The soft magnetic powder is compression molded at room temperature of higher, but lower than 50 deg.C without mixing with the lubricate and then the mold is annealed at 50 to 400 deg.C.

9. 发明专利

JPH11229002A COMPOSITE LUBRICANT FOR POWDER METALLURGY, POWDERY MIXTURE FOR POWDER METALLURGY EXCELLENT IN DIMENSIONAL STABILITY AND PRODUCTION OF SINTERED PRODUCT USING THE POWDERY MIXTURE 失效
公开(公告)号：JPH11229002A
公开(公告)日：1999-08-24
申请号：JP3768298
申请日：1998-02-19
申请人： KOBE STEEL LTD
发明人： AKAGI NOBUAKI , SEKI YOSHIKAZU , FUJISAWA KAZUHISA
IPC分类号： C10M105/24 , B22F3/02 , C10M127/00 , C10N40/20
摘要： PROBLEM TO BE SOLVED: To reduce the dispersion of dimensions in a sintering stage among the batches of powdery mixtures for powder metallurgy and to increase the dimensional stability therein by blending higher fatty acid metallic salt powder with a wax lubricant as a dewaxing promoter. SOLUTION: As for a wax lubricant, the one showing viscosity lower than that of higher fatty acid metallic salt in a sintering process to promote dewaxing, and the one in which, in metallic powder, higher fatty acid metallic salt powder is contained as a lubricant, and furthermore, a wax lubricant is contained as a dewaxing promoter for higher fatty acid metallic salt powder are preferable. As for the production of the sintered product, sintering is executed preferably in an atmosphere of a denatured gas essentially consisting of a town gas and/or a natural gas after compacting. It is required that, ordinarily, dewaxing is completed in a low temp. region before the arrival to a dewaxing temp. region of about 600 deg.C. For this purpose, in the case, together with stearic acid metallic salt powder, the wax lubricant of an amt. less than the equivalent to that of the stearic acid metallic salt powder is used, the dewaxing is accelerated by the wax lubricant to suppress the dispersion of the rate of the dimensional change.

10. 发明专利

JPS63149307A PRODUCTION OF HIGH-NITROGEN HIGH-ALLOY STEEL POWDER 失效
公开(公告)号：JPS63149307A
公开(公告)日：1988-06-22
申请号：JP29424286
申请日：1986-12-10
申请人： KOBE STEEL LTD
发明人： FURUTA SEISHI , SEKI YOSHIKAZU , HIRANO MINORU , KAWAI NOBUYASU
IPC分类号： B22F9/08
摘要： PURPOSE:To permit production of high-nitrogen high-alloy steel powder without requiring specific stages by melting a raw material metal in gaseous nitrogen or mixed gaseous atmosphere composed nitrogen and ammonia of the atm. pressure or above and atomizing the metal with the gaseous nitrogen. CONSTITUTION:The raw material is charged into a melting furnace 2 provided in a tank 1 and the inside of the furnace is evacuated to remove the air and moisture from the tank 1 inside. The high-purity gaseous nitrogen or the gaseous mixture composed of the nitrogen and 0.01-5% ammonia is introduced under the pressure above the atm. pressure into the furnace through an atmosphere introducing valve 4a and the melting furnace is heated up to melt the raw material metal. The molten metal is dropped from a tundish 5 by a molten metal nozzle 6 to form the falling molten metal flow, to which the high-pressure gaseous nitrogen is injected from an injection nozzle 7 to produce the powder instantaneously. While the powder falls in an atomization chamber 8, the powder is cooled and is captured by a cyclone separator 10.

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