摘要:
The invention relates to a sheet steel billet, sections of which are reinforced, that can be shaped to form a component. To achieve this, the entire surface of a reinforcement sheet is glued to a base sheet, using an adhesive which cures at a high temperature as the adhesive agent. The peripheral edge of the reinforcement sheet is securely fixed, forming no gaps, to the base sheet using an adhesive that cures at lower temperatures than the curing temperature of the adhesive applied to the entire surface. Said adhesive seals the area it encompasses, which contains the adhesive that has been applied to the entire surface but that is not cured until after the shaping process. Once said shaping process has taken place, this adhesive is fully cured at a high temperature, thus fixing the reinforcement sheet to the base sheet with maximum adherence.
摘要:
The invention concerns a double metal sheet consisting of two covering metal sheets (1, 2) defining an intermediate space, and a filling material (3) which fills said intermediate space. Said material is a plastic material, in particular a thermosetting porous material, wherein are incorporated hard bodies (6, 7, 8, 9). So as to obtain a low basic weight as well as a geometric moment of inertia as high as possible, in particular to avoid, in case of pressure load, a buckling of the covering metal sheet (1) acting as compression chord, the filling material is characterised in that when the two metal sheets are pressed against each other, by at least two tension/elongation characteristic curves. Said filling material has in particular pores closed relative to one another. The proportion of the plastic filling material (3) acting as matrix for the hard bodies (6, 7, 8, 9) defines the tension/elongation characteristic curve corresponding to the soft part, whereas the hard bodies (6, 7, 8, 9) define the tension/elongation characteristic curve corresponding to the hard part.
摘要:
The invention relates to a method for the electrolytic deposition of magnesium or magnesium-zinc on a substrate consisting of sheet metal (1) comprising a zinc or zinc alloy coating, especially a steel sheet. The electrolytic deposition is carried out in an essentially aprotic solvent, and the coated substrate (1) is then subjected to a heat treatment in order to create a Mg-Zn alloy phase in the zinc layer. The inventive sheet metal (1) is characterised by improved corrosion resistance with the same high surface quality and machinability as galvanised sheet metal.
摘要:
The invention relates to a composite material in strip or sheet form which consists of two steel cover sheets (1, 2), which are resistance-welded via electrically conductive bodies (4), and an intermediate layer (3) which consists of a filler material. The bodies (4) are embedded into said filler. The bodies (4) are configured as lentiform disks which lie flat between the cover sheets (1, 2). Such a composite material is produced by applying in a continuous mode the filler material (3') for the intermediate layer in a paste-like condition onto a strip (1') which represents the first cover sheet (1). The lentiform disks (4') are placed on the filler material (3') and are pushed into said material in a welding gap (8) formed by two contact rollers (6, 7) of a resistance welding device by way of a strip (2') which represents the second cover sheet (2) at least until the lentiform disks and the sheets contact. The lentiform disks are substantially flattened during welding with the strips (1', 2').
摘要:
The invention relates to a sheet steel billet, sections of which are reinforced, that can be shaped to form a component. To achieve this, the entire surface of a reinforcement sheet is glued to a base sheet, using an adhesive which cures at a high temperature as the adhesive agent. The peripheral edge of the reinforcement sheet is securely fixed, forming no gaps, to the base sheet using an adhesive that cures at lower temperatures than the curing temperature of the adhesive applied to the entire surface. Said adhesive seals the area it encompasses, which contains the adhesive that has been applied to the entire surface but that is not cured until after the shaping process. Once said shaping process has taken place, this adhesive is fully cured at a high temperature, thus fixing the reinforcement sheet to the base sheet with maximum adherence.
摘要:
The invention relates to a method for producing a stove-enameled molded component made from a dual-layered sheet of metal comprising two covering sheets with an intermediate epoxy resin layer that is glued to one of the covering sheets. In order to obtain a high buckling resistance for a low surface weight, maintaining an adhesive connection between the the covering sheets and the inermediate layer, while at the same time allowing for deformation of the dual-layer sheet by deep drawing in particular without subjecting the covering sheets to excessive stress, the epoxy resin that is used is polymerized exclusively at stove-enameling temperatures, being coherent but not polymerized when the dual-layer sheet is deformed, while the enamel is stoved only after the deformed component is lacquered, whereby said stoving occurs at a temperature at which polymerization of the epoxy resin of the intermediate layer also occurs.