Abstract: A description is given of a process for producing a metal plate having at least one embedded heating element and of the metal plate produced by the process. The heating element is arranged between two plate bodies, and the heating element is embedded in the plate bodies by rolling with material displacement. The adjacent sides of the plate bodies have a layer of aluminum or an aluminum alloy. After a heat pre-treatment at the re-crystallization temperature of the aluminum or the aluminum alloy, the plate bodies are pressed against one another to bring about a reduction in thickness, with which the plate bodies form a diffusion bond with one another and are integrally bonded to one another over the entire surface area thereof to form the metal plate to be produced. The process produces a metal plate as a whole with better thermal conductivity and a broader spectrum of use.

Abstract: A strip-shaped or plate-shaped composite metal object and a method for the production thereof. The composite metal object has at least two layers of the same metal. The layers have been brought by a heat pretreatment to a temperature such that a mutual diffusion bond has resulted through subsequent pressing of the layers against one another, while reducing the thickness by 5 to 25% and preferably 8 to 15%. A layer, which on the side thereof facing an adjacent layer has strip-shaped recesses, which are closed by the adjacent layer to form channels when the layers are pressed together, is used as one of the layers. The channels in the composite metal object allow the inclusion of additional elements before processed further to form an implement. The channels remain extensively preserved during the production and further processing of the composite model object.

Abstract: A description is given of a process for producing a metal plate having at least one embedded heating element and of the metal plate produced by the process. The heating element is arranged between two plate bodies, and the heating element is embedded in the plate bodies by rolling with material displacement. The adjacent sides of the plate bodies have a layer of aluminium or an aluminium alloy. After a heat pre-treatment at the re-crystallisation temperature of the aluminium or the aluminium alloy, the plate bodies are pressed against one another to bring about a reduction in thickness, with which the plate bodies form a diffusion bond with one another and are integrally bonded to one another over the entire surface area thereof to form the metal plate to be produced. The process produces a metal plate as a whole with better thermal conductivity and a broader spectrum of use.

Abstract: A strip-shaped or plate-shaped composite metal object and a method for the production thereof. The composite metal object has at least two layers of the same metal. The layers have been brought by a heat pretreatment to a temperature such that a mutual diffusion bond has resulted through subsequent pressing of the layers against one another, while reducing the thickness by 5 to 25% and preferably 8 to 15%. A layer, which on the side thereof facing an adjacent layer has strip-shaped recesses, which are closed by the adjacent layer to form channels when the layers are pressed together, is used as one of the layers. The channels in the composite metal object allow the inclusion of additional elements before processed further to form an implement. The channels remain extensively preserved during the production and further processing of the composite model object.

Abstract: The invention relates to a cooking vessel comprising a base made of a multilayer material and a side wall, the said multilayer material comprising, in succession from the outside of the vessel to the inside of the vessel: an outer part, having a thickness eE, consisting of a layer of a ferromagnetic Nickel based alloy having a Curie temperature of between 30 and 350° C. and a thermal expansion coefficient of greater than or equal to 6.5.10?6 K?1, and a core, having a thickness ec, comprising at least one layer selected among aluminium, aluminium alloy and copper.

Abstract: The invention relates to a plate-shaped composite material of several metal layers (1, 2, 3) for producing cookware suitable for induction stoves by deep drawing, wherein the composite material comprises two metallic outer layers (1, 2) and at least one metallic core layer (3) arranged between the outer layers (1, 2), wherein at least one of the two outer layers (1) is formed of aluminum or an aluminum alloy and the core layer (3) adjacent to this outer layer is formed of a ferromagnetic metal or a ferromagnetic metal alloy. The composite material composed in such a way can be coated on the outer layer which consists of aluminum or an aluminum alloy in a simple and cost efficient way. By this it becomes possible to produce high-quality cookware suitable for induction stoves with a desired coating at low cost.

Abstract: The invention relates to a cooking vessel comprising a base made of a multilayer material and a side wall, the said multilayer material comprising, in succession from the outside of the vessel to the inside of the vessel: an outer part, having a thickness eE, consisting of a layer of a ferromagnetic Nickel based alloy having a Curie temperature of between 30 and 350° C. and a thermal expansion coefficient of greater than or equal to 6.5.10?6 K?1, and a core, having a thickness ec, comprising at least one layer selected among aluminium, aluminium alloy and copper.