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71. 发明专利

JPH07299555A MANUFACTURE OF METAL BASED COMPOSITE MATERIAL 失效
公开(公告)号：JPH07299555A
公开(公告)日：1995-11-14
申请号：JP9357494
申请日：1994-05-02
申请人： KOBE STEEL LTD
发明人： NOMURA MASAHIRO , MORIMOTO HIROYUKI
IPC分类号： B22D19/14 , C22C1/10
摘要： PURPOSE:To provide a metal based composite material of high quality where the molten metal can be uniformly and efficiently stirred, and as a result, the reinforcing particles consisting of carbide and/or nitride are finely and uniformly dispersed manufacturing the metal based composite material by reaction- generating the carbide and nitride in the molten metal. CONSTITUTION:The reinforcing particles are reaction-generated in the molten metal while the molten metal in a heat resistant container 2 whose sectional shape is circular is stirred by a rotary plate-shaped stirrer 1 where the clearance d1 between the rotational locus on its outermost circumference side and the inner circumferential wall of the container is

72. 发明专利

JPH0641657A PRODUCTION OF AL OR AL ALLOY COMPOSITE 失效
公开(公告)号：JPH0641657A
公开(公告)日：1994-02-15
申请号：JP12720393
申请日：1993-05-28
申请人： KOBE STEEL LTD
发明人： MORIMOTO HIROYUKI , IWAMURA HIROSHI , NOMURA MASAHIRO
IPC分类号： C22C1/10
摘要： PURPOSE:To efficiently produce an Al alloy composite having excellent heat resistance and specific strength, etc., at a low cost by adding a carbide-forming metal and solid carbon source in molten Al, reacting at a specific high temp. while mechanically stirring and uniformly dispersing the carbide. CONSTITUTION:In the molten Al or Al alloy, the carbide-forming metal element (B, Si, Ti, etc., desirably about 5-40wt.%) and the solid carbon source (graphite, coal, etc., desirably about 1-20wt.%) are added. Successively, while stirring the molten metal by mechanical stirring or electromagnetic stirring, the molten metal is heated at 1100-1500 deg.C and reacted, and the carbide is generated and dispersed and cast. Then, the carbon and the carbide-forming metal element in the molten metal are added so as to satisfy the expression and a jig in contact with the molten metal uses the one containing no carbide-forming metal element and carbon. By this method, the Al or Al alloy composite having light wt. and the specific Young's modulus, wear resistance, etc., is obtd.

73. 发明专利

JP2002105588A IRON BASED HIGH RIGIDITY MATERIAL AND ITS PRODUCTION METHOD 审中-公开
公开(公告)号：JP2002105588A
公开(公告)日：2002-04-10
申请号：JP2001224727
申请日：2001-07-25
申请人： KOBE STEEL LTD
发明人： NOMURA MASAHIRO , KAKO HIROSHI
IPC分类号： C22C38/00
摘要： PROBLEM TO BE SOLVED: To obtain an iron based high rigidity material having high rigidity so as to satisfy the Young's modulus of >=210 GPa and further capable of stably exhibiting excellent toughness by attaining the fine uniformization of dispersed compounds and to provide a useful method for producing the same iron based high rigidity material. SOLUTION: In a pseudo-binary phase diagram of an iron based metal and the above dispersed compounds, when the volume fraction of the compounds in the composition in which the liquidus temperature is made the lowest one is defined as X(%), the volume fraction of the above compounds occupied in the iron based high rigidity material lies in the range of (X-5) to (X+3)(%), further, the ratio of the ones with a grain size of =80% by volume fraction, also, the concentration of oxygen in the iron based high rigidity material is =110 J/cm2, and the lowest value in the above measured values is >=50% of the above average value.

74. 发明专利

JPH1062153A METHOD AND DEVICE FOR PREDICTING FERRITE LAYER DEPTH 失效
公开(公告)号：JPH1062153A
公开(公告)日：1998-03-06
申请号：JP22113896
申请日：1996-08-22
申请人： KOBE STEEL LTD
发明人： NOMURA MASAHIRO , MORIMOTO HIROYUKI
IPC分类号： G01B21/08 , G01N33/20
摘要： PROBLEM TO BE SOLVED: To estimate ferrite decarburized depth non-destructively and effectively on the basis of heating conditions and the composition of steel to heat by using a prediction function obtained from an experiment, etc., in advance or from an established formula. SOLUTION: The composition of steel to heat is inputted by a steel composition inputting part 1 such as a keyboard to a predicted function determining part 2 to select a predicted function F. At this time, in the case that the predicted function F corresponding to the composition of steel is stored in a predicted function storing part 21, the predicted function F is selected and outputted to a function transforming part 4. In the case of not stored, the predicted function F is set at a predicted function coefficient computing part 22 by predetermined computation. Next, predetermined heating conditions are set to a heating condition setting part 3 and read in by the function transforming part 4. The values of the predicted function F according to parameters are computed and outputted to a computing part 5. After predetermined computational processing, the prediction of ferrite decarburized depth is completed.

75. 发明专利

JPH03207832A HIGHLY CORROSION-RESISTANT AND HIGH STRENGTH ZR ALLOY 失效
公开(公告)号：JPH03207832A
公开(公告)日：1991-09-11
申请号：JP79390
申请日：1990-01-05
申请人： NUCLEAR FUEL IND LTD , TOKYO ELECTRIC POWER CO , KOBE STEEL LTD
发明人： FURUYA TAKEMI , GOTO MASAKAZU , ITAGAKI NOBORU , NOMURA MASAHIRO , KAWAI KIMIHISA , ABE KATSUHIRO , HARADA MAKOTO
IPC分类号： C22C16/00
摘要： PURPOSE:To obtain the high strength Zr alloy excellent in nodular corrosion resistance and mechanical characteristics by incorporating Zr with specified amounts of Sn, Fe, Cr, Ni and O or furthermore with Nb. CONSTITUTION:Zr is incorporated with, by weight,

76. 发明专利

JP2002243724A METHOD OF ESTIMATING DEPTH OF DECARBONIZED LAYER, METHOD OF CONTROLLING DEPTH OF DECARBONIZED LAYER, DEVICE FOR ESTIMATING DEPTH OF DECARBONIZED LAYER, AND METHOD OF DETERMINING HEAT PATTERN 失效
公开(公告)号：JP2002243724A
公开(公告)日：2002-08-28
申请号：JP2001035259
申请日：2001-02-13
申请人： KOBE STEEL LTD
发明人： NOMURA MASAHIRO , KAKO HIROSHI , TOYAMA MASAO , KOIZUMI FUJIO
IPC分类号： G01N33/20 , C21D1/00
摘要： PROBLEM TO BE SOLVED: To estimate not only a depth of a decarbonized layer in ferrite but also a depth of the whole decarbonized layer. SOLUTION: The depth of the decarbonized layer is calculated based on a decarbonization model corresponding to a low temperature area where decarbonization in the ferrite is generated from a substantial surface of a steel material to a depth ξ, an intermediate temperature area where the decarbonization in the ferrite is generated from the substantial surface of the steel material to the depth ξ, and where decarbonization in austenite is generated in a zone deeper than the depth ξ, or a high temperature area where the decarbonization in the austenite is generated from the substantial surface of the steel material. A property that a decarbonization concentration comes to c0, Calpha, or Cgamma in the depth ξ of the ferrite decarbonized layer is used in the calculation hereinbefore.

77. 发明专利

JP2002126809A METHOD FOR PREDICTING QUALITY OF MATERIAL OF HOT-ROLLED STEEL PLATE AND METHOD FOR CORRECTING PASS SCHEDULE 失效
公开(公告)号：JP2002126809A
公开(公告)日：2002-05-08
申请号：JP2000322237
申请日：2000-10-23
申请人： KOBE STEEL LTD
发明人： MURAKAMI SHOGO , NOMURA MASAHIRO , MAKII KOICHI , KAWANO HARUYA
IPC分类号： G01N33/20 , B21B37/00 , C21D8/02
摘要： PROBLEM TO BE SOLVED: To provide a method for predicting the quality of materials of steel plates capable of obtaining a high accuracy of materials prediction at a high speed and a method for correcting a pass schedule capable of using the results of the materials prediction. SOLUTION: A method for predicting the quality of materials of hot-rolled steel plates manufactured by repeatedly rolling billet in γ single-phase area and an aggregate average γ particle size and an aggregate average residual distortion in all the areas of a re-crystallized section and a raw re-crystallized section obtained after the final pass are found, and based on the data obtained, the quality of materials of steel plates are directly predicted. By separating the re-crystallized section A from the raw re-crystallized section B in the former pass, the computation to find a γsystem of partial re-crystallized construction constituting the re-crystallized section A3 having the average γ particle size of No.1 re-crystallized section A1 and No.2 re-crystallized section B1 generated from each region A, B and the raw re-crystallized section B3 having the average γ particle size and the average residual distortion of No.1 raw re-crystallized section A2 and No.2 raw re-crystallized section B2 generated from each region A, B is repeatedly executed until the final pass to find a γcomposition (an average γparticle size and average residual distortion) after the final pass.

78. 发明专利

JP2000303132A ALUMINUM ALLOY BRAZING SHEET EXCELLENT IN EROSION CHARACTERISTIC 失效
公开(公告)号：JP2000303132A
公开(公告)日：2000-10-31
申请号：JP11171699
申请日：1999-04-20
申请人： KOBE STEEL LTD , SHINKO ARUKOA YUSO KIZAI KK
发明人： NOMURA MASAHIRO , NANBA SHIGENOBU , UEDA TOSHIKI
IPC分类号： C22C21/00
摘要： PROBLEM TO BE SOLVED: To provide an Al alloy brazing sheet excellent in erosion characteristics and used, e.g. for automobile heat-exchanger parts material. SOLUTION: A brazing filler metal 2, composed of an Al alloy containing 6.0-13.5% (by weight, the same applies to the following) Si or 0.4-5.5% Ge, is laminated on one side or both sides of a core material 1 composed of an Al alloy containing 0.05-2.0% Mn. The core material 1 is composed of an Al alloy further containing, besides Mn, 0.1-5.0% Ca, 0.1-10.0% Li, 0.05-0.8% Sr, 0.05-0.8% Sc, and 0.05-1.0% Y, and further one kind among prescribed amounts of Ti, Zr, V, Nb, Co, Ni, Ba, Be, and Ta. Because Be, etc., precipitate and fix, as compounds, Si and Ge which infiltrate from the brazing filler metal into the core material at the time of brazing, erosion can be controlled and prevented.

79. 发明专利

JPH1068048A HIGH RIGIDITY AND HIGH TOUGHNESS STEEL AND ITS PRODUCTION 失效
公开(公告)号：JPH1068048A
公开(公告)日：1998-03-10
申请号：JP22858496
申请日：1996-08-29
申请人： KOBE STEEL LTD
发明人： NOMURA MASAHIRO , NANBA SHIGENOBU , MORIMOTO HIROYUKI
IPC分类号： C22C38/00 , C22C33/04
摘要： PROBLEM TO BE SOLVED: To produce a high rigidity and high toughness steel having >=220Gpa Young's modulus, in which deterioration in toughness and machinability caused by the dispersion of compounds having high rigidity is suppressed and high in toughness and excellent in machinability by uniformly dispersing compounds having high rigidity into a steel by using a melting method in which the production cost is inexpensive. SOLUTION: This high rigidity and high toughness steel is the one in which, in a matrix composed of iron or an iron alloy, the carbides or borides of the group 4a and 5a elements or their compounds having >=300GPa Young's modulus by 5 to 50vol.%, and melting is executed. In this case, in the range of observation within 1mm in the high rigidity and high toughness steel, the number of the aggregates of the compounds is regulated to

80. 发明专利

JPH0978222A GAS CARBURIZING METHOD FOR STEEL 失效
公开(公告)号：JPH0978222A
公开(公告)日：1997-03-25
申请号：JP23039695
申请日：1995-09-07
申请人： KOBE STEEL LTD
发明人： NOMURA MASAHIRO , MORIMOTO HIROYUKI , MATSUSHIMA YOSHITAKE , YASUKI SHINICHI , YASUNAGA KEIICHI
IPC分类号： C23C8/22
摘要： PROBLEM TO BE SOLVED: To easily produce a steel in which the desired carburizing quantity can be obtd. by subjecting a steel composed of various alloy compsns. to carburizing treatment in a gaseous atmosphere having a carbon potential shown by the specified formula. SOLUTION: At the time of subjecting a steel composed of various alloy compsn. to gas carburizing treatment, the carbon potential CP (mass%) is decided by the formula CP=α(Cs-β.CR), and the carburizing treatment is executed by a gaseous atmosphere having the above carbon potential. Furthermore, in the formula, Cs denotes the objective carbon concn. (mass%) in the surface of the steel, CR denotes chromium equivalent (mass%), α denotes the coefficient by a carburizing furnace and β denotes the constant decided by considering the treating temp. Moreover, the carbon potential CP is shown by the contained carbon concn. in the surface of the steel after pure iron or steel contg. no alloy element other than carbon is subjected to carburizing treatment till an equilibrium can be attained. Thus, the carbon potential CP as a carburizing treatment condition can easily and precisely be decided.

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