MOULDING OF CERAMIC MOULDING FORMS

摘要

A method for making a ceramic moulding form (14'), e.g. for moulding or forming of composite materials, glasses or metals, comprising the following steps: force-mixing of a batch of ceramic powder (1) in the dry phase in a mixer (5) for even distribution of the powder components, to form a dry basis for a moulding mass (14); characterized by adding a water solution (2) containing a small amount of a water surface tension reducing agent (4) slowly into the powder (1) to form a batch of moulding mass (14) in the running force-mixer (5); adding reinforcing fibres (3) slowly and evenly into the batch of moulding mass (14) in the running force-mixer (5); transferring the batch of moulding mass (14) to a vacuum tob (7); extracting air by pumping vacuum in the vacuum tob (7)and transfering the vacuum tob (7) to a rolling bed (7c) for rotation for evacuation of entrapped air bubbles from the batch of moulding mass (14); and injecting the batch of moulding mass (14) into a mould form (11), leaving the moulding mass (14) to harden into a moulding form (14').