Ceramic and/or powder metallurgically moulded parts and process for their production

摘要

The ceramic and/or powder metallurgy molded parts comprise green sheets that are arranged adjacent to one another and/or above one another, are wrapped by paper and/or textile technological methods and comprise joining seams on their surface. The molded parts are formed in a rod, extruded and/or tubular shape manner. Different ceramic and/or powder metallurgy materials are provided in the green sheets that comprise a structure over a cross-section and/or a length of the molded part graded with respect to the ceramic and powder metallurgy materials. The ceramic and/or powder metallurgy molded parts comprise green sheets that are arranged adjacent to one another and/or above one another, are wrapped by paper and/or textile technological methods and comprise joining seams on their surface. The molded parts are formed in a rod, extruded and/or tubular shape manner. Different ceramic and/or powder metallurgy materials are provided in the green sheets that comprise a structure over a cross-section and/or a length of the molded part graded with respect to the ceramic and powder metallurgy materials. The molded parts are wound on cores, mandrels, or free-shaped stencils. The joining seams are provided in the molded parts that are straight, twisted and/or crossed. The ceramic and/or powder metallurgy molded parts further comprise sintered green bodies. An independent claim is included for a method for producing ceramic and/or powder metallurgical molded parts.