Abstract: A workpiece material is fed between rollers to bend the workpiece material while rolling, wherein the workpiece has a first thickness portion and a second thickness portion connected to each other with a setting angle of 90 degrees. The first thickness portion increases from an inner side toward an outer side, and a thickness on an outer peripheral side of the first thickness portion is M, and a thickness of a cross section of the second thickness portion is N. The workpiece material is rolled in such that at a completion of bending, a thickness of a cross section of a first thickness portion is m, an outer radius of the first thickness portion is R, an inner radius of the first thickness portion is r, and a thickness of a cross section of a second thickness portion is n, and M equals to m(R/r), and N equals to n(R/r).

Abstract: The disclosure aims to provide a structural member made of an extruded material that effectively helps to reduce weight while ensuring strength and rigidity. The structural member has a varied wall thickness along an extrusion direction.

Abstract: A workpiece material is fed between rollers to bend the workpiece material while rolling, wherein the workpiece has a first thickness portion and a second thickness portion connected to each other with a setting angle of 90 degrees. The first thickness portion increases from an inner side toward an outer side, and a thickness on an outer peripheral side of the first thickness portion is M, and a thickness of a cross section of the second thickness portion is N. The workpiece material is rolled in such that at a completion of bending, a thickness of a cross section of a first thickness portion is m, an outer radius of the first thickness portion is R, an inner radius of the first thickness portion is r, and a thickness of a cross section of a second thickness portion is n, and M equals to m(R/r), and N equals to n(R/r).

Abstract: An aluminum member exhibits improved alkali resistance with respect to an anodic oxide coating. The highly alkali-resistant aluminum member includes a material that includes aluminum or an aluminum alloy, an anodic oxide coating that is formed on the surface of the material, and a coating layer that is formed on the anodic oxide coating, and includes a siloxane glass component in a ratio of 90 mass % or more, wherein the coating layer has a thickness of 0.5 to 5.0 ?m and a coating mass of 0.4 to 5.0 g/m2.

Abstract: The disclosure aims to provide a structural member made of an extruded material that effectively helps to reduce weight while ensuring strength and rigidity. The structural member has a varied wall thickness along an extrusion direction.

Abstract: An aluminum member exhibits improved alkali resistance with respect to an anodic oxide coating. The highly alkali-resistant aluminum member includes a material that includes aluminum or an aluminum alloy, an anodic oxide coating that is formed on the surface of the material, and a coating layer that is formed on the anodic oxide coating, and includes a siloxane glass component in a ratio of 90 mass % or more, wherein the coating layer has a thickness of 0.5 to 5.0 ?m and a coating mass of 0.4 to 5.0 g/m2.

Abstract: A bending method feeds a long workpiece material made of metal and having a plurality of thickness portions disposed at different angles between rollers and bends the workpiece material. An initial shape of the workpiece material is a straight line or a bend with a bend radius larger than a target bend radius, a thickness of a cross section of the workpiece material along a bend radius direction is set to increase from an inner side toward an outer side of the bend radius direction, the workpiece material is fed between the rollers and rolled in a way that an amount of rolling in a region corresponding to the outer side of the bend radius direction is larger than an amount of rolling in a region corresponding to the inner side, and the workpiece material is bent to have the target bend radius from the initial shape.

Abstract: An apparatus and a method are disclosed that form an anodic oxide coating on part of the outer surface of a profile having an irregular cross-sectional shape. A partial anodizing apparatus that is used to partially anodize a profile having an irregular cross-sectional shape includes an electrolytic bath that is divided into two or more partial baths. The profile is held using the two or more partial baths so that part of the profile is situated outside the electrolytic bath to form a sealed electrolysis chamber.

Abstract: An aluminum member exhibits improved alkali resistance with respect to an anodic oxide coating. The highly alkali-resistant aluminum member includes a material that includes aluminum or an aluminum alloy, an anodic oxide coating that is formed on the surface of the material, and a coating layer that is formed on the anodic oxide coating, and includes a siloxane glass component in a ratio of 90 mass % or more, wherein the coating layer has a thickness of 0.5 to 5.0 ?m and a coating mass of 0.4 to 5.0 g/m2.

Abstract: An anodized member includes a metal, and an anodic oxide coating that is formed on the surface of the metal. The surface of the anodic oxide coating includes a high-concentration layer that has a sealing metal content of 1.5 mmol/g or more. The high-concentration layer has a thickness of 0.15 ?m or more.

Abstract: An electrolytic apparatus that is used for a workpiece having an irregular cross-sectional shape, the workpiece having a hollow section that is formed vertically therethrough, and having a plurality of protrusions and a plurality of recesses that are formed on an inner surface thereof, the electrolytic apparatus includes a mounting section that closes a lower opening of the workpiece, a holding section that closes an upper opening of the workpiece, and an electrode that is placed inside the workpiece, the electrode having a hollow cross-sectional shape, and having a plurality of jet orifices for discharging an electrolyte solution respectively toward the plurality of recesses of the workpiece, and the mounting section and/or the holding section having a plurality of drain outlets that are provided respectively corresponding to the plurality of recesses of the workpiece.

Abstract: An apparatus and a method are disclosed that form an anodic oxide coating on part of the outer surface of a profile having an irregular cross-sectional shape. A partial anodizing apparatus that is used to partially anodize a profile having an irregular cross-sectional shape includes an electrolytic bath that is divided into two or more partial baths. The profile is held using the two or more partial baths so that part of the profile is situated outside the electrolytic bath to form a sealed electrolysis chamber.

Abstract: A surface treatment method improves the surface properties of a metal member while maintaining the metal surface texture, and a metal member is obtained by the surface treatment method. The surface-treated metal member is obtained by bringing a solution of a fluorine-based polymer into contact with a surface of an anodic oxidation coating that is formed on a surface of a metal and has not been subjected to a sealing treatment, and subjecting the anodic oxidation coating to a steam sealing treatment, the surface-treated metal member comprising a fluorine-based polymer layer having a thickness of 100 nm or less, and a composite sealed layer that is formed continuously under the fluorine-based polymer layer, the composite sealed layer having a configuration in which the fluorine-based polymer is present inside pores formed in the anodic oxidation coating.

Abstract: A metal scuff plate includes a plate made from a light-alloy and having a back side, at least one pin positioned at a portion of the back side of the plate and welded thereto. The at least one pin possesses an engagement groove. The metal scuff plate further includes a synthetic-resin made clip having at least one first hook engaged with the engagement groove of the pin. The clip is engaged with at least one engagement hole defined at a body so as to fasten the light-alloy plate to the body.

Abstract: A metal scuff plate includes a plate made from a light-alloy and having a back side, at least one pin positioned at a portion of the back side of the plate and welded thereto. The at least one pin possesses an engagement groove. The metal scuff plate further includes a synthetic-resin made clip having at least one first hook engaged with the engagement groove of the pin. The clip is engaged with at least one engagement hole defined at a body so as to fasten the light-alloy plate to the body.