Nippon Light Metal Inactive USPTO patentsUtility application

Provided are a non-heat-treated aluminum alloy which has excellent casting properties and is high in both strength and toughness, and an aluminum alloy die casting material which is high in both strength and toughness, and which, in addition to having minimal difference in characteristics between regions thereof, is not prone to be affected by aging.

The present invention includes a joining process in which a first metal member and a second metal member are joined with an auxiliary member interposed therebetween by moving a rotary tool along a butted portion in a state where the rotary tool being rotated is inserted only from a front face side of the auxiliary member, only a stirring pin is in contact with the auxiliary member, a base end side of the stirring pin is exposed, and an outer circumferential face of the stirring pin is slightly in contact with the first metal member and the second metal member, and the auxiliary member is provided with an inclined face on at least one side face in such a form that the auxiliary member has a smaller dimension with increasing distance from a front face, and at least one of the first metal member and the second metal member is provided with an inclined face corresponding to the inclined face of the auxiliary member and inclined from the front face toward a back face.

An object of the present invention is to provide a joining method by which metal members can be suitably joined to each other.

A cooling device includes a body having a flow passage for a heating medium that passes through the body, a first header made of a resin that has an inlet and covers a first end, and a second header made of a resin that has an outlet and covers a second end.

A joining method including an overlapping step of overlapping a front surface of a first metal member and a back surface of second metal member such that the front surface is opposed to the back surface; and a welding step of performing a laser welding and a MIG welding by using a hybrid welding machine including a preceding laser welding unit and a following MIG welding unit, in which the laser welding is performed by emitting a laser beam onto a front surface of the second metal member, the MIG welding is performed on an inner corner portion formed by the front surface of the first metal member and an end surface of the second metal member, and a target position for the laser beam from the laser welding unit is located against the second metal member relative to a target position for a MIG arc by the MIG welding unit.

The present invention provides a non-heat-treatable aluminum alloy for die casting, which can exhibit good castability and is able to confer excellent tensile characteristics (0.2% proof stress and elongation) and excellent corrosion resistance on die cast aluminum alloy materials.

An edge of each of a first metal member and a second metal member is formed to have a U-shaped cross section with a first horizontal plate projecting from a base edge of a vertical plate, and with a second horizontal plate projecting from a top edge of the vertical plate.

This invention is characterized by including: a primary joining process in which a coarse portion having a predetermined width is formed in the vicinity of a step side face within a plasticized region while a rotary tool is being moved one round along a first butted portion to perform friction stirring in a state that a tip of a stirring pin of the rotary tool which is rotated is inserted to the same depth as or slightly deeper than the step bottom face and only the stirring pin is slightly in contact with at least an upper portion of a jacket body; and an inspection process in which a passed position of the stirring pin is specified by performing a defect inspection to detect the coarse portion after the primary joining process.

Aluminum alloy sheet for battery lid use excellent in deformation resistance, formability, and heat radiation ability, which aluminum alloy sheet for battery lid use enabling formation of an integrated explosion-proof valve with little variation in operating pressure and excellent in cyclic fatigue resistance, and a method of production of the same are provided, the aluminum alloy sheet for battery lid use for forming an integrated explosion-proof valve having a component composition containing Fe: 0.85 to 1.50 mass %, Mn: 0.30 to 0.70 mass %, Ti: 0.002 to 0.15 mass %, and B: less than 0.05 mass %, having a balance of Al and impurities, having an Fe/Mn ratio restricted to 1.8 to 3.5, restricting, as impurities, Si to less than 0.40 mass %, Cu to less than 0.03 mass %, Mg to less than 0.05 mass %, and V to less than 0.03 mass %, having a 0.2% yield strength of 40 MPa or more, having a value of elongation of 40% or more, having a conductivity of 53.0% IACS or more, having a recrystallized structure, and having a value of elongation after cold rolling by a rolling reduction of 80% of 6.5% or more.

Aluminum alloy sheet for battery lid use excellent in heat radiation ability, formability, and work softenability, which aluminum alloy sheet for battery lid use enabling formation of an integrated explosion-proof valve with little variation in operating pressure and excellent in cyclic fatigue resistance, and a method of production of the same are provided, the aluminum alloy sheet for battery lid use for forming an integrated explosion-proof valve having a component composition containing Fe: 1.05 to 1.50 mass %, Mn: 0.15 to 0.70 mass %, Ti: 0.002 to 0.15 mass %, and B: less than 0.03 mass %, having a balance of Al and impurities, having an Fe/Mn ratio restricted to 1.8 to 7.0, restricting, as impurities, Si to less than 0.40 mass %, Cu to less than 0.03 mass %, Mg to less than 0.05 mass %, and V to less than 0.03 mass %, having a conductivity of 53.0% IACS or more, having a value of elongation of 40% or more, having a recrystallized structure, having a value of (TS95-TS70) of less than −1 MPa when defining a tensile strength after cold rolling by a rolling reduction of 70% as TS70 and defining a tensile strength after cold rolling by a rolling reduction of 95% as TS95, and having a value of elongation after cold rolling by a rolling reduction of 90% of 5.0% or more.

The invention has a feature of comprising a butting process of forming a stepped butted portion and a joining process of performing friction-stir-welding on the stepped butted portion, wherein the rotary tool includes a base side pin having a taper angle larger than a taper angle of a tip side pin, and a pin step portion in a staircase shape is formed on an outer circumferential face of the base side pin, and wherein in the joining process, a rotation direction and a translation method of the rotary tool are set such that the second metal member is on an advancing side, a target angle by which a rotation axis of the rotary tool is inclined toward the second metal member is set such that a burr formed on a front face of the second metal member after the joining process has a thickness between 0 and 130 μm.

Aluminum alloy sheet for battery lid use excellent in heat radiation ability, formability, and work softenability, which aluminum alloy sheet for battery lid use enabling formation of an integrated explosion-proof valve with little variation in operating pressure and excellent in cyclic fatigue resistance, and a method of production of the same are provided, the aluminum alloy sheet for battery lid use for forming an integrated explosion-proof valve having a component composition containing Fe: 1.05 to 1.50 mass %, Mn: 0.15 to 0.70 mass %, Ti: 0.002 to 0.15 mass %, and B: less than 0.04 mass %, having a balance of Al and impurities, having an Fe/Mn ratio restricted to 1.8 to 7.0, restricting, as impurities, Si to less than 0.40 mass %, Cu to less than 0.03 mass %, Mg to less than 0.05 mass %, and V to less than 0.03 mass %, having a conductivity of 53.0% IACS or more, having a value of elongation of 40% or more, having a recrystallized structure, having a value of (TS95−TS80) of less than −3 MPa when defining a tensile strength after cold rolling by a rolling reduction of 80% as TS80 and defining a tensile strength after cold rolling by a rolling reduction of 95% as TS95, and having a value of elongation after cold rolling by a rolling reduction of 90% of 5.0% or more.

In production of an electrode for an aluminum electrolytic capacitor, a hydrated film is formed onto an aluminum electrode including a porous layer by immersing the aluminum electrode into a first hydration treatment liquid having a temperature of 80° C. or more in a first hydration treatment step (ST1) and thereafter the aluminum electrode is heated in an atmosphere having a temperature of 150° C. or more and 350° C. or less in a dehydration step (ST2).

The present invention provides a lightweight optical member that can be produced at a relatively low cost, wherein distortion due to temperature rise is suppressed, and the appearance color is sufficiently blackened or darkened, and a method for efficiently producing the optical member.

The present invention includes: a preparation step in which a stepped portion including step bottom and step side surfaces is formed along an inner circumferential edge of a jacket body; a placing step in which a sealing body is placed on the jacket body forming first and second butted sections; and a main joining step in which friction stir welding is performed by moving a rotary tool along the first butted section, while only a stirring pin of the rotary tool is in contact with only the sealing body.

The present invention is characterized by including a primary joining process to perform friction stirring to a first butted portion by moving a stirring pin one round around a sealing body with a predetermined depth along a set moving route set at an inner position relative to an outer peripheral side face in a state that only the stirring pin of a rotary tool being rotated is inserted into the sealing body and that an outer face of the stirring pin is slightly in contact with a step side face of a peripheral wall step portion.

An aluminum alloy fin material for heat exchanger use excellent in buckling resistance which, even if the fin material is reduced to a final sheet thickness of 30 to 80 μm, is excellent in formability at the time of corrugation, has a suitable strength before brazing enabling easy fin formation, exhibits a suitable self corrosion resistance and sacrificial anode effect, and is high in strength as a material for forming working fluid passages is provided.

The present invention provides an FPD pellicle frame body in which external color is controlled so as to make it easy to prevent scattering of exposure light, to perform the foreign object non-adhesion inspection before use, and the like, and a method for manufacturing the frame body efficiently.