Agence Nationale De Valorisation De La Recherche (anvar)

Other

Sten Chronberg

A method of cutting and shaping a sheet or slab of soft, tearable and scalable paste, constituted for example by agglomerated solid or plastic particles, based in particular on clays, for the manufacture of ceramic objects or pieces, said objects being cut out of a slab portion constituting a blank by means of suitably contoured cutters which are caused to penetrate into the said paste laid on a bearing support having the desired shape, after which the trimmings are removed. In order to allow the objects cut out of the said blank to be recovered, the said cutting is performed on a supple film or hand laid on the said support, for example a plastic film or sheet, which is apt to conform in shape to the objects cut out, which does not adhere to the said objects and which is not cut by the said cutters, the objects thus cut out being thereafter separated from the said supple band.

Method and device for cutting and shaping a sheet or slab of paste based

Process and device for ensuring the displacement, in a tunnel kiln in particular for high-temperature firing of ceramic products, of firing plates traversing the kiln of the type wherein the whole row of plates are pushed at one end of the kiln and roll on balls supported in rolling paths. Parallel grooves are formed on the lower face of the plates to receive the balls and more hollow portions and more protruded portions are provided on the lower face of the places in the said grooves so that when a ball passes under a said protrusion it locally supports a plate and simultaneously relieves of the load the balls of the same rolling path in proximity to the said protrusion what gives a better rolling of the plates and reduces the flow of the balls through the kiln.

Process and device for displacing firing plates through a tunnel kiln

A method of making plate material consisting of agglomerated clay-based particles, comprising providing a liquid particle suspension such as slip within a gap left between two continuously travelling confronting electrodes at a given voltage applied thereto, subjecting the suspension to an electrophoretic action between said electrodes and an adjacent counter-electrode subjected to a different voltage and controlling the formation and thickness of the electrophoretic deposits on said first electrodes so that when they leave the electrophoretic field they will be fused together with their outer surfaces having contacted each other and recovering said plate formed continuously from both layers of electrophoretic deposits.

Method and machine for manufacturing a plate-like material made from

A method and apparatus for preparing a shaped article by electrophoresis, said article being formed by agglomerated particles deposited on electrodes from a suspension in a liquid, wherein said suspension is supplied into a space defined between two confronting electrodes in the form of a concave portion and of a convex portion of said article, respectively, wherein said suspension is subjected to an electrophoresis effect between said electrodes which are subjected to a given voltage while an adjacent counterelectrode is subjected to another voltage, and wherein said electrodes are moved closer to one another so as to join and compress together corresponding deposits, for thus forming said article.

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Arnieres-sur-Iton, France

Sten Chronberg