Nissan Motor Company Limited

Other

Hitachi Global Storage Technologies Netherlands B.v.

Nippon Light Metal Company, Ltd.

Kojiro Kobayashi

Shigeyuki Nakagawa

Kenji Miyamoto

Minoru Kasukawa

Masayuki Inoue

Akio Hirose

Hiroshi Sakurai

Tetsuji Morita

Toshikazu Nanbu

Chika Yamamoto

Sadao Yanagida

Akira Fukushima

Makoto Ono

Takashi Miyamoto

Noriko Uchiyama

Kenji Kanamori

Yoshitaka Uehara

Hiroshi Fukuyama

Hirotaka Miwa

Koji Itakura

Satoru Suzuki

Ryou Murakami

Yasunori Nishimoto

Yusuke Nagaishi

Masao Aihara

Haruyasu Katto

Chika Sugi

A method for incrementally forming includes: preparing a tool T disposed on one side of a metal plate W, a fixing jigto hold a periphery of the metal plate W, and a template Pincluding a molded edge E that follows at least a part of a contour of a part to be processed F; arranging the template Pon the other side of the metal plate W; holding the periphery of the metal plate W together with the template Pby the fixing jigto fix the metal plate W and the template P; and moving the tool T while pressing the tool T against the metal plate W, to incrementally form the part to be processed F having a three-dimensional shape of the metal plate W. The method enables to form the part to be processed F in high precision with no use of a molding die and thus, is effective in bringing about reducing cost of equipment and manufacturing.

Method for incrementally forming

Disclosed herein are bonded structures and methods of forming the same. One embodiment of a bonded structure comprises first and second metallic layers and a bonding interface between the first and second metallic layers formed by diffusion and comprising a layer of at least one intermetallic compound. The intermetallic compound layer is formed in an area 52% or greater of an area of the bonding interface and has a thickness of 0.5 to 3.2 &#x3bc;m.

Bonded structure of dissimilar metallic materials and method of joining dissimilar metallic materials

In joining members to be joined () by heating the members to be joined () that are mated with intervening an insert () while applying opposing loads to the members to be joined (), so as to allow eutectic reaction to occur between the members to be joined () and the insert () to discharge a eutectic melt from a joining plane along with an oxide film () of the members to be joined, the members to be joined () are brought into contact with the insert () so that the oxide film () is broken by a stress concentrating means previously provided at least one of joining portions breaks to produce a starting point of the eutectic reaction.

Joining method and joining component

A method for joining metal materials, which joins a first member with at least a joining face made of Metal A, the Metal A being mainly composed of at least one selected from the group consisting of Al, Cu, Ag and Au, to a second member with at least a joining face made of Metal B, the Metal B being mainly composed of at least one selected from the group consisting of Al Cu, Ag and Au, includes interposing an insert between the joining faces of the first and second members, wherein the insert contains Zn as a metal capable of causing an eutectic reaction with at least one metal except for Au in Metal A as well as at least one metal except for Au in Metal B.

Method for joining metal materials

There is provided an aluminum alloy casting consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn and the balance being Al and unavoidable impurities, or consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn, 0.3 to 1.0 mass % of Cu and the balance being Al and unavoidable impurities, and containing eutectic Si grains having an aspect ratio of 2.0 or smaller and an average grain size of 1.0 micrometer or smaller. There is also provided an automotive part formed with the aluminum alloy casting and a production method of the aluminum alloy casting.

Aluminum alloy casting and production method thereof

[Object] To provide a joining method for dissimilar metals which are magnesium alloy and steel and difficult to be metallurgically directly joined to each other while oxide film is present at a joining surface. [Solving Means] In order to join magnesium alloy materialand steel plateto each other, a galvanized steel plate to which Zn&#x2014;Al&#x2014;Mg alloy plating (a third material) is applied is used as the steel plate. When joining is made, ternary eutectic melting of Al&#x2014;Mg&#x2014;Zn is caused, so that it is discharged together with oxide filmand impurities from the joining interface while Al&#x2014;Mg intermetallic compound such as AlMgand Fe&#x2014;Al intermetallic compound such as FeAlare formed, thereby joining the newly generated surfaces of the magnesium alloy materialand the steel plateto each other through a compound layercontaining these intermetallic compounds.

Dissimilar metal joining method for magnesium alloy and steel

Disclosed is a bonding method for dissimilar materials made from metals and its resulting structures. The materials to be bonded are formed by layering three or more sheets such that a dissimilar material interface and a same material interface are formed. A first current is conducted between a three-sheet layered plate material wherein an aluminum alloy plate, a zinc plated steel plate and a bare steel plate, for example, are layered in order. A nugget is formed in an interface between the zinc plated steel plate and the bare steel plate, which are the same materials. Then, a second current greater than the first current is conducted, and a nugget is formed in an interface between the aluminum alloy plate and the zinc plated steel plate.

Bonding method of dissimilar materials made from metals and bonding structure thereof

In joining a magnesium alloy material(first material) and a steel material (second material), a zinc-plated steel plateplated with zinc (metal C) is used as a steel material, Al (metal D) is added to the magnesium alloy material. Next, eutectic melting of Mg and Zn is caused so as to remove a product produced by the eutectic melting with an oxide filmand impurities from a joint interface. Moreover, an Al&#x2014;Mg system intermetallic compound such as AlMgand an Fe&#x2014;Al system intermetallic compound such as FeAlare produced, whereby regenerated surfaces of both materialsandare joined via a compound layercontaining those intermetallic compounds.

Joining method and joint structure of dissimilar metal

A method of bonding dissimilar metals, a bonding structure formed by such a method and a bonding apparatus for performing such a method. The resulting bond is capable of preventing corrosion (e.g., electric corrosion) resulting from contact of the dissimilar metals and obtains a dissimilar material joint exhibiting anti-corrosive property and bonding strength at low costs. The method includes overlapping two materials made from dissimilar metals having a seal material interposed therebetween and discharging the seal material from a bonding interface and bonding the two materials in direct contact with each other.

Method for bonding a seal member and dissimilar materials made from metals

According to a metal joining method of the present invention, first and second dissimilar metals are joined together by interposing between the first and second metal materials a third metal material dissimilar to the first and second metal materials and causing eutectic melting at least either at an interface between the first and third metal materials or at an interface between the second and third metal materials.

Dissimilar metal joining method

A method of joining dissimilar materials of the present invention has a step of lapping a high melting point material on a low melting point material with a third material interposed therebetween. The third material is different from the high and low melting point materials. Further, the method has a step of irradiating an energy beam onto the high melting point material and a step of pressing the high and low melting point materials to cause eutectic melting between at least one of the high and low melting point materials and the third material and to join the high and low melting point materials in the form of a line.

Joining method, joining machine, and joint structure of dissimilar material

Embodiments of the present invention provide a data group for each parameter that is classified into a first group and a second group, based on the performance of the products, a base point of a distribution of the data group is calculated, based on the distribution, and a distance range from the base point is decided. The number of data within this range belonging to the first group is counted and substituted for variable FX, the number of data belonging to the second group is counted and substituted for variable SX, the number of data outside this certain range belonging to the first group is counted and substituted for variable FY, and the number of data belonging to the second group is counted and substituted for variable SY. Moreover, a failure content ratio is calculated from variables FX, FY, SX and SY, and the yield impact is calculated.

Growing community of inventors

Yokosuka, Japan

Shigeyuki Nakagawa