摘要:
A friction stir welding includes a main body for holding a tool and a hot air and cool air separating unit. The separating unit is disposed at the main body and separates a supplied gas into hot air hotter than the gas and cool air cooler than the gas in a tube portion and ejects the cool air from a first end of the tube portion and ejects hot air from a second end of the tube portion. The hot air is supplied to a front side of a movement direction of the tool in the surface of the work piece from a tool side of the friction stir welding apparatus and the cool air is supplied to a rear side of the movement direction of the tool in the surface of the work piece from the tool side of the friction stir welding apparatus.
摘要:
A member support of a friction stir spot welding device has a backing piece having a bearing surface that contacts work-pieces, and a supporting body that supports the backing piece. In the backing piece, the amount of change (δ) in the position of the bearing surface on the extension line of the central axis of rotation between a state in which the bearing surface is in a reference state perpendicular to the central axis of rotation (Ac) of a rotary tool) and a state in which the bearing surface tilts in response to the tilting of the work-pieces, is less than or equal to a predetermined embedding amount (ds) with which the shoulder part of the rotary tool is embedded in the work-pieces.
摘要:
Skin material of a clad material is composed of one or more layers, each layer of the skin materials is made of a metal different from the core material in their component compositions, and at least one layer of the skin material has a cast microstructure, when the skin material is superposed on either of one or both faces of the core material.
摘要:
The present invention provides an aluminum alloy material which is used as a core material for an aluminum alloy brazing sheet and has superior strength at a high temperature. The aluminum alloy material of the present invention is used as a core material C1 for an aluminum alloy brazing sheet B31 (or B32) which has a filler alloy F formed on at least one side of the core material C1. The aluminum alloy material contains more than 2.5% by mass and 3.5% by mass or less of Cu, and the balance being made of aluminum and unavoidable impurities.
摘要:
An object of the present invention is to provide a catalyst for hydrodesulfurization/dewaxing of a hydrocarbon oil, with which sulfur compounds in the hydrocarbon oil can be desulfurized to a high degree and which simultaneously is extremely effective in reducing the wax deposit content; a process for producing the catalyst; and a method of hydrotreatment with the catalyst.The invention relates to a catalyst for hydrodesulfurization/dewaxing of a hydrocarbon oil, comprising a support comprising an inorganic oxide containing at least one crystalline aluminosilicate having a one- or two-dimensional pore path system and, having provided thereon, 10 to 35% by mass of a metal in Group 6 of the Periodic Table, 1 to 10% by mass of a metal in Group 8 of the Periodic Table, and 1.5 to 6% by mass of phosphorus in terms of oxide amount on the basis of the catalyst and further containing 2 to 14% by mass of carbon derived from an organic acid in terms of element amount on the basis of the catalyst, wherein the content of the crystalline aluminosilicate having a one-or two-dimensional pore path system in the support is 3 to 25% by mass on the basis of the support; a process for producing the catalyst; and a method of hydrotreatment with the catalyst.
摘要:
A method for manufacturing a clad material composed of a core material and one or more skin materials which are superposed on either one or both faces of the core material, includes a clad material preparation process where an ingot for core material is manufactured by dissolving and casting a metal, and an ingot for skin material is manufactured by dissolving and casting a different metal for skin material, without hot rolling. The ingot for skin material is superposed as a skin material at a predetermined position of either one or both faces of the ingot for core material and the superposed material is hot-rolled to manufacture a clad material.
摘要:
A method for manufacturing a panel structure in which a reference position of a first frame in an axial direction is first welded to one face of a face plate, a not-yet-welded position closest to the reference position in the axial direction is second welded to the one face, and welding is performed discontinuously to the one face from the not-yet-welded position closest to the reference position at portions on both sides in the axial direction on the basis of the reference position.
摘要:
In a friction stir welding apparatus for overlapped joints provided with a rotor having a shoulder and a probe that is provided so as to protrude from the shoulder of the rotor and also so as to be disposed concentrically with the center axis of the rotor, a helical groove is formed in the peripheral surface of the probe, from the tip of the probe toward the shoulder, and the depth of the groove is formed so as to gradually decrease from the tip of the probe toward the shoulder.
摘要:
The present invention provides a method of forming a coating film on an aluminum substrate, comprising the steps of: (1) coating an aluminum substrate with a thermosetting polyester resin lustrous powder base coating composition (a) containing a lustrous material, and baking the resulting base coat layer; and (2) coating the base coat layer with a thermosetting acrylic resin clear powder coating composition (b), and baking the resulting clear coat layer to obtain a lustrous multilayer coating film.
摘要:
The present invention relates to metal object-coating method, which method comprises coating a primer composition (I) prepared by adding an inorganic anti-corrosive agent to at least one binder component selected from the group consisting of a binder component (A) containing an epoxy resin and ant least one of amino resin and phenol resin, a binder component (B) containing a polyester resin, epoxy resin and phenol resin, and a binder component (C) containing α-olefin•α,β-ethylenically unsaturated carboxylic acid copolymer resin onto the surface of a metal object coating substrate to form a primer coating film layer, followed by coating a topcoat coating composition consisting of a thermoplastic resin based coating composition (II) onto the primer coating film layer to form a topcoat coating film layer consisting of a thermoplastic resin coating film layer; and the primer composition used in the method.