Hoechst Ceramtec Aktiengesellschaft

Pacific Wietz Gmbh & Co. Kg

Juergen Heinrich

Axel Krauth

Karl-Heinz Victor

Heinz Peeken

Heinrich Schelter

Stefan Schindler

The invention concerns a sliding body for sliding systems in which sliding surfaces of sliding and counter components form a gap in which there is a fluid, whereby the sliding body (1) at least in the area of sliding surfaces (10) is comprised of several stacked thin form elements stamped out of foils or cards, which are solidly bonded together on the contact faces. The invention also concerns a process for the production of the sliding body, whereby foils are produced from ceramic slips, in which various hollow chambers and/or recesses are stamped or impressed, a laminating agent is applied to the foils or cards, the foils or cards are stacked into a sliding body packet and the layers of the stack are laminated together, the organic components are partially baked off, after which a post-treatment of the sliding body takes place, then the remainder of the organic components are removed, and then the laminated sliding body is sintered between 1200.degree. and 2200.degree. C., after which an optional post-treatment takes place. The novel sliding body is used especially for production of hydrodynamic enhancement shapes in the sliding surface.

Process for producing a sliding body

Annular sliding body for a sliding seal and process for use thereof

Process and apparatus for manufacturing heat exchangers from ceramic sheets, wherein different flow channels are stamped from or pressed into the sheets, and the formed sheets are joined together with a laminating agent. The stacking of the individual sheets is effected using apparatus in which the sheets are transported to the forming means, applicator means and laminating means by horizontally and vertically displaceable, rotatable and pivotable suction plates. The organic component of the ceramic sheets is expelled from the heat exchanger block obtained in two heating steps with an intermediate forming operation to bring the heat exchanger block to its final dimensions, and the block then fired between 1,200.degree. to 1,700.degree. C. The actual sintering temperature depends on the particular ceramic used, which may comprise Si.sub.3 N.sub.4, SiC, cordierite and/or semiconductive barium titanate compounds.

Process for manufacturing heat exchangers from ceramic sheets

Growing community of inventors

Schoenwald, Germany

Juergen Heinrich