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1. 发明专利

JP2002356737A DUCTILE CAST IRON TUBE BY CENTRIFUGAL CASTING METHOD AND PRODUCTION METHOD THEREFOR 审中-公开
公开(公告)号：JP2002356737A
公开(公告)日：2002-12-13
申请号：JP2002085120
申请日：2002-03-26
申请人： KURIMOTO LTD , HORIE AKIRA
发明人： MAEKAWA KEIICHI , MICHIURA YOSHISADA , KITAGAWA MASAYOSHI , NAKAMOTO KOJI , TAKAHARA WATARU , HORIE AKIRA
IPC分类号： B22D13/02 , C21C1/10 , C22C33/10 , C22C37/04
摘要： PROBLEM TO BE SOLVED: To attain the improvement of quality of ductile cast iron tube by a centrifugal casting method and the simplification of the process. SOLUTION: The cast iron tube has components containing 3.0 to 4.0% C, 1.5 to 3.0% Si, 0.1 to 0.4% Mn, =90%, so that ferritizing annealing after casting can be performed at a lower temperature, and/or can be performed in a short time.

2. 发明专利

JP2000246466A FRICTION AGITATION WELDING OF GRAPHITE CAST IRON 失效
公开(公告)号：JP2000246466A
公开(公告)日：2000-09-12
申请号：JP4375999
申请日：1999-02-22
申请人： KURIMOTO LTD , HORIE AKIRA
发明人： KITAGAWA MASAYOSHI , MICHIURA YOSHISADA , MAEKAWA KEIICHI , HORIE AKIRA , KO BUNSHIYOKU
IPC分类号： B23K20/12 , B23K103/06 , B23K103/18
摘要： PROBLEM TO BE SOLVED: To provide a friction agitation welding method to strongly join in no defect even for a graphite cast iron having a solid round bar shape. SOLUTION: A cross sectional face of a joining face 11 of at least either one of joining materials 1, which is formed to a recessed groove 13 with taking a rotation axis as an apex, is butted on the joining face 12 of the other joining material through a gap void 10, one of the materials to be joined is fixed, the other is coaxially rotated, a graphite deformed layer produced due to mutual friction force is discharged to the outside of the joining face, the materials are subjected to upset joining. In an actual state, in a fracture test, as being contrary to a conventional technology, there is no case of the fracture at a boundary, all are fractured at a base material or a heat affected zone, the tensile strength is extremely high, sound joining of no defect made of the matrix toughened higher than the base material is obtained.

3. 发明专利

JP2001276983A FRICTION WELDING MATERIAL MADE OF DUCTILE CAST IRON AND PRODUCTION METHOD THEREOF 失效
公开(公告)号：JP2001276983A
公开(公告)日：2001-10-09
申请号：JP2000093412
申请日：2000-03-30
申请人： KURIMOTO LTD , HORIE AKIRA
发明人： KITAGAWA MASAYOSHI , MICHIURA YOSHISADA , MAEKAWA KEIICHI , HORIE AKIRA
IPC分类号： B23K20/12 , B23K101/06 , B23K103/06 , C22C37/00 , C22C37/10
摘要： PROBLEM TO BE SOLVED: To solve the prolem that ductile cast iron metal materials, conventional friction welding cannot assure the resultant base metal of even strength and elongation. SOLUTION: Two ductile cast iron materials, either or both of which contain 2.5% or more silicon are set to make a tip-to-tip contact. Then, they are subjected to friction force to generate welding heat under the friction pressure of 10-60 MPa, at the friction speed of 4 to 8 meter per second and at the burn- off speed of 0.15-0.7 mm per second, and thereafter are held under the upset pressure of 20-80 MPa. While this prevents the production of pearlite in the base metal, ductile ferrite phase can also be retained in the base metal to maintain necessary strength and elongation.

4. 发明专利

JP2002356736A FRICTION WELDING MATERIAL OBTAINED FROM DUCTILE CAST IRON AND PRODUCTION METHOD THEREFOR 审中-公开
公开(公告)号：JP2002356736A
公开(公告)日：2002-12-13
申请号：JP2002086889
申请日：2002-03-26
申请人： KURIMOTO LTD , HORIE AKIRA
发明人： MAEKAWA KEIICHI , MICHIURA YOSHISADA , KITAGAWA MASAYOSHI , TAKAHARA WATARU , HORIE AKIRA
IPC分类号： B23K20/12 , B23K103/06 , C22C37/04
摘要： PROBLEM TO BE SOLVED: To provide a joint with mechanical properties equal to or more excellent than those of original metals by friction welding of ductile cast iron. SOLUTION: The joint is obtained by applying friction welding to the ductile cast iron materials either or both of which contain 0.0005 to 0.05% Bi, and, more desirably, contain 0.0001 to 0.05% Ca and the joint maintains mechanical properties equal to or above those of the original base metals even without undergoing heat treatment after welding. The number of graphite grains to be crystallized extremely increases, and extremely fine graphite is dispersedly crystallized onto a dense base. Further, it is estimated that the exhaust of graphite in the process of the welding is efficiently performed as well, and the induction of the improvement of strength after the welding is sufficiently expected. In a high temperature state, Ca and Bi form an intermetallic compound to check the wear of Bi due to vaporization, and the original action of Bi is secured, so that its mechanical properties, particularly, elongation can further be improved.

5. 发明专利

JP2001276982A FRICTION WELDING METHOD FOR DUCTILE CAST IRON MATERIAL 失效
公开(公告)号：JP2001276982A
公开(公告)日：2001-10-09
申请号：JP2000093413
申请日：2000-03-30
申请人： KURIMOTO LTD , HORIE AKIRA
发明人： KITAGAWA MASAYOSHI , MICHIURA YOSHISADA , MAEKAWA KEIICHI , HORIE AKIRA
IPC分类号： B23K20/12 , B23K20/22 , B23K20/227 , B23K20/24 , B23K103/06
摘要： PROBLEM TO BE SOLVED: To provide a friction welding method for ductile cast iron, in which a friction welding portion of ductile cast iron maintains almost the same level of elongation of the original base material without heat treatment. SOLUTION: Metal powder 2 containing at least 30% of silicone is coated on one side or both sides of connecting surfaces of two pieces of materials having the same diameter in advance, and then, a friction welding is applied to two pieces of the materials. In the friction welding method, a coated volume of the metal powder 2 is at least one-tenth and over of the product that multiplies a connecting surface area by a friction upset distance F during the friction welding. Further, a concave portion 3 is provided on the connection surface 1 so that the metal powder 2 mixing a combining agent is filled in the concave portion 3, in which the surface of the filled metal powder is the same level with the connecting surface 1. Furthermore, the deepest distance H sinking from the connecting surface 1 in the concave portion 3 does not exceed the friction upset distance F during friction welding.

6. 发明专利

JP2004332070A System for analyzing combinedness of substrate to organic coating film 审中-公开
公开(公告)号：JP2004332070A
公开(公告)日：2004-11-25
申请号：JP2003131885
申请日：2003-05-09
申请人： Kenji Azuma , Kurimoto Ltd , 健司東 , 株式会社栗本鐵工所
发明人： TORII HIDEYA , MICHIURA YOSHISADA , KITAGAWA MASAYOSHI , AZUMA KENJI
IPC分类号： C23C14/12 , C23C14/54 , C23C26/00
摘要： PROBLEM TO BE SOLVED: To provide a system for analyzing a combining state between an organic film and a substrate by a computer simulation.
SOLUTION: This system is provided with: an input device, in which a designing condition of molecular structures of the organic film as an analyzing objective and the substrate forming this film; a numerical calculation/analyzing device, in which a molecular designing program moved with an instruction from this input device and a simulation program calculating the organic film combined state on the surface of the substrate, are composed, a data storing /extracting device, in which the numerical value data of the molecular structures of the substrate and the film, are classified and stored to make the data base; and an output device, in which the data extracted from this data storing/extracting device, is outputed.
COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2004301535A Method for analyzing bonding state of organic film on surface of metal 审中-公开
公开(公告)号：JP2004301535A
公开(公告)日：2004-10-28
申请号：JP2003091809
申请日：2003-03-28
申请人： Kenji Azuma , Kurimoto Ltd , 健司東 , 株式会社栗本鐵工所
发明人： TORII HIDEYA , MICHIURA YOSHISADA , KITAGAWA MASAYOSHI , AZUMA KENJI
IPC分类号： G01N33/20
摘要： PROBLEM TO BE SOLVED: To provide a more accurate and rapid behavior analyzing and evaluating method in relation to a process for forming an organic film on the surface of a metal before the synthesis of an organic film compound and a film forming experiment.
SOLUTION: The potential energies in an atomic or molecular unit of the surface of the metal to be analyzed and the organic film on the surface of the metal are respectively calculated on the basis of a molecular dynamic method by a computer to culculate the most stable structures being the minimum energy values thereof. This calculation is performed using a monomer model as a unit in relation to the organic film and performed in relation to the surface of the metal by constructing the periodic boundary model of a crystal state. Next, the total energy value (=the potential energy value of the periodic boundary model of the surface of the metal-the potential energy value of the monomer model of the organic film) of the most stable structure model wherein the organic film and the periodic boundary model are combined is repeatedly calculated on the basis of molecular kinetics so as to be converged to a definite value to simulate the most stable structure model by the computer. When the total energy value is converged to the definite value, the organic film on the surface of the metal is determined to be stable and the bonded state of the organic film at this time of the behavior reaching the bonded state is analyzed.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2004268118A Method of producing iron based shape memory alloy pipe, and pipe produced thereby 审中-公开
公开(公告)号：JP2004268118A
公开(公告)日：2004-09-30
申请号：JP2003065219
申请日：2003-03-11
申请人： Hiroshi Kubo , Kurimoto Ltd , 紘久保 , 株式会社栗本鐵工所
发明人： UMEMOTO KOSAKU , NAKAMURA KIMIO , MICHIURA YOSHISADA , KITAGAWA MASAYOSHI , KUBO HIROSHI
IPC分类号： B22D1/00 , B22D13/02 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To increase the ratio of columnar crystals in a pipe fitting made of an iron based shape memory alloy, and to improve the fastening force of the pipe.
SOLUTION: In the method of producing an iron based shape memory alloy pipe, at the time when a pipe formed of an iron based shape memory alloy as the stock of a pipe fitting is cast, Ti as an element more easily bonded with N than the case of Al is added to the molten metal of an iron based shape memory alloy in a range where it is bonded with the whole N contained in the alloy, and also the amount of titanium compounds disturbing the formation of columnar crystals is regulated within an allowable range. Thus, the precipitation of AlN on the solidification of the alloy is suppressed to obtain a columnar crystal ratio of ≥50%, so that the inside diameter shrinkage rate of the pipe fitting using the pipe as the stock is increased to improve the fastening force of the pipe.
COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JP2004195493A Joining material, production method therefor, structure of traffic transportation means, and structure of railway vehicle 有权
公开(公告)号：JP2004195493A
公开(公告)日：2004-07-15
申请号：JP2002365377
申请日：2002-12-17
申请人： Kenji Azuma , Kurimoto Ltd , Railway Technical Res Inst , 健司東 , 株式会社栗本鐵工所 , 財団法人鉄道総合技術研究所
发明人： MORI HISASHI , TSUJIMURA TARO , SAKAMOTO YOSHIO , KITAGAWA MASAYOSHI , MICHIURA YOSHISADA , MAEKAWA KEIICHI , AZUMA KENJI
IPC分类号： B61D17/00 , B23K20/00 , B32B3/12 , B32B15/01
摘要： PROBLEM TO BE SOLVED: To provide a joining material whose lightening can be attained while maintaining its strength and rigidity, to provide a production method therefor, to provide a structure of a traffic transportation means, and to provide a structure of a railway vehicle. SOLUTION: The joining material 3 is used for a structure of a traffic transportation means such as a railway vehicle. The joining material 3 is a clad plate with a sandwich structure obtained by joining a metal 3a and a metal 3b with an adhesive agent layer 3c. The metal 3a is an alloy bulk material such as an aluminum alloy, a titanium alloy and stainless steel. As the aluminum alloy, the one for elongation is preferable, and a heat treatment type alloy such as a 6,000 series aluminum alloy which has excellent strength and corrosion resistance and can obtain prescribed strength by age hardening is particularly preferable. The metal 3b is a magnesium alloy, and is a magnesium alloy extruded material subjected to extrusion working. As the adhesive agent layer 3c, a powerful adhesive such as an epoxy adhesive is preferable in the case heating treatment is performed after coating. COPYRIGHT: (C)2004,JPO&NCIPI

10. 发明专利

JP2004176180A Threaded fastener 审中-公开
公开(公告)号：JP2004176180A
公开(公告)日：2004-06-24
申请号：JP2004010322
申请日：2004-01-19
申请人： Kenji Azuma , Kishiwada Stainless Kk , Kurimoto Ltd , 岸和田ステンレス株式会社 , 健司東 , 株式会社栗本鐵工所
发明人： KITAGAWA MASAYOSHI , MICHIURA YOSHISADA , MAEKAWA KEIICHI , OBARA MITSUAKI , AZUMA KENJI , ASAOKA TAKESHI
IPC分类号： F16B35/00 , C22C1/10 , C22C23/02 , C22C23/04 , C22C49/04 , C22C101/02 , C22C101/06 , C22C101/10 , C22C101/12 , C22C101/16
摘要： PROBLEM TO BE SOLVED: To provide threaded fasteners which have light weight and excellent productivity and by which manufacturing steps can be decreased and manufacturing costs can be reduced.
SOLUTION: The threaded fasteners can be obtained by subjecting industrial pure magnesium or a magnesium alloy or a composite material using these as a matrix, each having a fine-grained superplastic structure of ≤100μm grain size, to heating to 250 to 400°C where a superplastic phenomenon occurs and carrying out forming by warm forging utilizing the superplastic phenomenon.
COPYRIGHT: (C)2004,JPO

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