process for the manufacture of compounds and adhesives of ceramic pipes and fittings in foundries and steel and steel as well as the process produced fittings

摘要

The plants include foundries, steelworks and smelting works. The mouldings include tubes, etc. and are joined together via an adhesive applied to their joint surfaces. A heated organic adhesive is pref. employed and applied to one of the joint surfaces via a spray gun, followed by pressing the mouldings together. The joint surfaces pref. consist of a mating tongue and groove, or alternatively, a plain butt joint, and adhesive pref. contains sinterable inorganic materials, esp. 90 wt.% of silica flour, chamotte flour, feldspar flour, bonding clay or borax. Tubular mouldings are pref. bonded together to make a complete ingate and runner system which is then inserted in a moulding box; and the inlet and/or outlet is pref. covered by a consumable plastic foil to exclude dust. A reliable joint can be made, even on thin walled tubes where the wall thickness does not permit the use of a tongue and groove joint.