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61. 发明专利

JP2000297335A HIGH STRENGTH TITANIUM ALLOY 失效
公开(公告)号：JP2000297335A
公开(公告)日：2000-10-24
申请号：JP10274299
申请日：1999-04-09
申请人： DAIDO STEEL CO LTD
发明人： SUZUKI AKIHIRO , OKABE MICHIO
IPC分类号： A63B53/04 , A63B102/32 , C22C14/00
摘要： PROBLEM TO BE SOLVED: To impart high strength to the alloy, to increase its ductility as well and to improve a balance of both by preparing a Ti alloy contg. specified ratios of Cr, V, Al and O. SOLUTION: A Ti alloy contg., by weight, 10 to 15% Cr, >12 to 24% V, 4 to 10% Al, 0.01 to 0.4% O, and the balance Ti with inevitable impurities is prepd. In this way, a Ti alloy to form into a useful material in the case the situation that working is particularly easy is desired as the material for the head of a golf club or the material for machine parts (such as the valve retainer of an automotive engine) for which light weight and high strength are required is obtd. Moreover, Cr centers into solid solution in the β phase to strengthen this. V is an element which enters into the β phase to strengthen it similarly to Cr and plays an important role for securing ductility. A relatively small amt. of Al forms solid solution into the β phase and is useful for the strengthening of the β phase. O is the component for strengthening the α phase as well, and it also forms solid solution into the β phase and is useful for strengthening it.

62. 发明专利

JP2000144286A TOUGH TITANIUM ALLOY 失效
公开(公告)号：JP2000144286A
公开(公告)日：2000-05-26
申请号：JP32098298
申请日：1998-11-11
申请人： DAIDO STEEL CO LTD
发明人： SUZUKI AKIHIRO , OKABE MICHIO
IPC分类号： C22C14/00
摘要： PROBLEM TO BE SOLVED: To provide a more tough titanium alloy capable of dealing with the need of further thinning. SOLUTION: This alloy has a compsn. contg., by weight, 4 to 10% Cr, 10 to 24% V, 2 to 6% Al, >0 to 0.2% 0 and >0 to 0.05% C+N, contg. >0 to 4% Sn+Zr according to circumstances, contg. > 0 to 2% Fe according to circumstances, contg. >0 to 2% Si according to circumstances, and the balance Ti with impurities.

63. 发明专利

JP2000087187A NON-MAGNETIC STAINLESS STEEL WITH EXCELLENT CORROSION RESISTANCE AND HIGH STRENGTH, AND ITS PRODUCTION 失效
公开(公告)号：JP2000087187A
公开(公告)日：2000-03-28
申请号：JP26078598
申请日：1998-09-16
申请人： DAIDO STEEL CO LTD
发明人： SHIMIZU TETSUYA , OKABE MICHIO
IPC分类号： C21D8/00 , C22C38/00 , C22C38/42 , C22C38/44 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a non-magnetic stainless steel excellent in corrosion resistance and strength and capable of producing sound steel ingots and products by incorporating stably large amounts of N. SOLUTION: This non-magnetic stainless steel has a composition consisting of, by weight, =13 [wt.%Cr]+19[wt.%Mo]+9[wt.% W]+2[wt.%Mn].

64. 发明专利

JPH11323506A MARTENSITIC HEAT RESISTANT STEEL 失效
公开(公告)号：JPH11323506A
公开(公告)日：1999-11-26
申请号：JP12933798
申请日：1998-05-12
申请人： DAIDO STEEL CO LTD
发明人： UEDA SHIGENORI , NODA TOSHIHARU , OKABE MICHIO
IPC分类号： C22C38/00 , C21D1/18 , C21D6/00 , C22C38/22 , C22C38/26 , C22C38/34
摘要： PROBLEM TO BE SOLVED: To provide martensitic heat resistant steel in which heat resistance is improved while various physical properties of the known martensitic heat resistant steel are maintained, and the maximum temp. in continuous use is increased from the conventional 600 deg.C to 700 deg.C and to substitute a part of the use of austenitic heat resistant steel. SOLUTION: This steel has a compsn. contg., by weight, 0.35 to 0.60% C, 1.0 to 2.5% Si, 0.1 to = two kinds of additional elements in the following groups: (1) 0.1 to 1.0% Nb+Ta, (2) 0.1 to 1.0% V and (3)

65. 发明专利

JPH11140596A PRODUCTION OF HIGH STRENGTH FREE CUTTING STAINLESS STEEL FOR COLD FORGING, EXCELLENT IN DELAYED FRACTURE CHARACTERISTIC, AND PARTS 失效
公开(公告)号：JPH11140596A
公开(公告)日：1999-05-25
申请号：JP30755697
申请日：1997-11-10
申请人： DAIDO STEEL CO LTD
发明人： SHIMIZU TETSUYA , OKABE MICHIO
IPC分类号： C21D6/00 , C22C38/00 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To provide a high strength free cutting martensitic stainless steel for cold forging, capable of setting aging temp. at a value selected from a wide range of temps. from 450 to 640 deg.C and exhibiting excellent delayed fracture characteristic. SOLUTION: This free cutting stainless steel can be obtained by subjecting a stainless steel, having an alloy composition consisting of, by weight,

66. 发明专利

JPH1122427A MANUFACTURE OF DIESEL ENGINE VALVE 失效
公开(公告)号：JPH1122427A
公开(公告)日：1999-01-26
申请号：JP17811397
申请日：1997-07-03
申请人： DAIDO STEEL CO LTD
发明人： NAGASHIMA TOMOTAKA , OKABE MICHIO , NODA TOSHIHARU
IPC分类号： C22C19/05 , C22F1/00 , C22F1/10 , F01L3/02
摘要： PROBLEM TO BE SOLVED: To provide a diesel engine valve with higher strength and excellent corrosion resistance by using a high precipitation hardening heat resisting allay as a material, hot forging it into a valve form, partially cold working a face part, and then enhancing the hardness of the cold-worked part by aging treatment. SOLUTION: In the manufacture of a suction and exhaust valve 1 for diesel engine excellent in corrosion resistance and strength, a high precipitation hardening heat resisting alloy is used, and it is hot forged into a valve form. A face part 2 is then partially cold-worked and then aged to enhance the hardness of the cold-worked part. The used high precipitation hardening heat resisting allay consists of a heat resisting alloy of Ni group or Fe group, and as the Ni-group heat resisting alloy, an alloy containing Ti, Al and Nb in addition to C, Si and Cr with the remainder of Ni is preferably used. As the Fe-group heat resisting alloy, an alloy containing Ti, Al and Mo in addition to C, Si and Cr with the remainder of Fe is preferably used.

67. 发明专利

JPH10195563A TI ALLOY EXCELLENT IN HEAT RESISTANCE AND TREATMENT THEREOF 失效
公开(公告)号：JPH10195563A
公开(公告)日：1998-07-28
申请号：JP34964896
申请日：1996-12-27
申请人： DAIDO STEEL CO LTD
发明人： SUZUKI AKIHIRO , NODA TOSHIHARU , OKABE MICHIO
IPC分类号： C22F1/00 , C22C14/00 , C22F1/18
摘要： PROBLEM TO BE SOLVED: To improve the high temp. proof stress, creep strength and fatigue strength of a Ti alloy excellent in lightness, corrosion resistance and heat resistance and to furthermore improve its heat resistance. SOLUTION: This alloy has a chemical componental compsn. contg., by weight, 5.0 to 7.0% Al, 3.0 to 5.0% Sn, 2.5 to 6.0% Zr, 2.0 to 4.0% Mo, 0.05 to 0.80% Si, 0.001 to 0.200% C and 0.05 to 0.20%, preferably, 0.08 to 0.13% C, furthermore contg. one or two kinds of Nb and Ta according to necessary, and the balance Ti with impurities.

68. 发明专利

JPH10193174A FILLER METAL FOR WELDING OXIDE DIFFUSION REINFORCEMENT ALLOY 失效
公开(公告)号：JPH10193174A
公开(公告)日：1998-07-28
申请号：JP35926396
申请日：1996-12-27
申请人： DAIDO STEEL CO LTD
发明人： HAMANO SHUJI , OKABE MICHIO
IPC分类号： B23K9/23 , B23K35/30 , C22C19/05
摘要： PROBLEM TO BE SOLVED: To provide the filler metal for oxide diffusion reinforcement type alloy welding by containing C, Si, Mn, Cr, Mo, Fe, Ti, Al, Nb, Co, P, S, Cu and Ni of the prescribed quantity. SOLUTION: The alloy has the composition consisting of, by weight, 0.001-0.15% C,

69. 发明专利

JPH10130790A HEAT RESISTANT ALLOY EXCELLENT IN COLD WORKABILITY AND OVERAGING CHARACTERISTIC 失效
公开(公告)号：JPH10130790A
公开(公告)日：1998-05-19
申请号：JP30122496
申请日：1996-10-25
申请人： DAIDO STEEL CO LTD
发明人： UEDA SHIGENORI , NODA TOSHIHARU , OKABE MICHIO
IPC分类号： C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a precipitation hardening heat resistant alloy excellent in cold workability and capable of manufacturing heat resistant parts such as exhaust value for automobile engine by means of cold working, capable of direct aging treatment without application of solid solution heat treatment after cold working, capable of reducing manufacturing costs of heat resistant parts, and also capable of inhibiting overaging state even after long use in a high temp. state and, as a result, free from deterioration in properties. SOLUTION: This heat resistant alloy has a composition consisting of, by weight, 0.01-0.1% C,

70. 发明专利

JPH09314276A MANUFACTURE OF HIGH STRENGTH STAINLESS BOLT 失效
公开(公告)号：JPH09314276A
公开(公告)日：1997-12-09
申请号：JP12815596
申请日：1996-05-23
申请人： SHINKO BOLT KK , NISSEI SEIKO KK , DAIDO STEEL CO LTD
发明人： SHIMIZU TETSUYA , OKABE MICHIO , TAKAGI YASUMICHI , NAGASAKI EIJI , SHIMIZU MASAYUKI , MORI SADAFUMI
IPC分类号： F16B35/00 , B21J1/06 , B21K1/44 , C21D9/00 , C22C38/00 , C22C38/48
摘要： PROBLEM TO BE SOLVED: To prevent internal cracking of a bolt head part which is generated in forming a bolt through cold forging or hot forging of the martensitic precipitation hardening stainless steel to which solution heat treatment is applied in advance. SOLUTION: After martensitic precipitation hardening stainless steel in which the martensitic phase is >=90vol.% through the solution heat treatment is formed into a bolt stock through the cold forging, the steel is gradually cooled until the surface temperature of the bolt stock reaches

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