Process for impregnating bodies with a casting resin composition

Abstract

Abstract A BODY TO BE IMPREGNATED, SUCH ELECTRICAL WINDING, IS PLACED IN A CAVITY WHERE IT IS PERFERABLY HELD BY A MOULD INSERT AND THE TWO MEMBERRS ARE CLAMP TOGETHER AND RATED ABOUT AN AXIS LYING OUTSIDE THE SPACED ENCLOSED BY ANY CAVITY. THE CAVITY AND BODY ARE PREHEATED BY HEATING MEANS AND A HIGHLY REACTIVE CASTING RESIN COMPOSTION, WHICH INCLUDES A FILLER, WHICH IS CAPABLE OF HARDENING AND SOLIDIFYING WITHIN A PERIOD OF FROM 1 TO 60 MINUTES, AND OF WHICH THE RESIN IS PREFERABLY ANEPOXY RESIN IS INTRODUCED INTO THE CHAMBER FROM WHENCE IT FLOWS UNDER CENTRIFUGAL ACTION IN TE CAVITY TO IMPREGANTE THE BODY. THE RESIN COMPOSTION IS ALLOWED TO HARDEN AND SOLIDIFY UNDER PRESSURE CAUSED EITHER BY THE CENTRIFUGAL ACTION OR BY A PRESSURE MEDIUM AND THE IMPREGNATED BODY IS THEN REMOVED. THE CAVITY IS PREHEATED TO A TEMPERATURE SUFFICIENT TO INITIATE THE HARDENING REACTION OF THE CASTING RESIN COMPOSITION AND THE TEMPERATURE AT WHICH THE CASTING RESIN COMPOSITION IS INTRODUCED IS AT LEAST 10% BELOW THE TEMPERATURE OF CAVITY, BOTH SUCH TEMPERATURES BEING MEASURED IN DEGREES CENTIGRADE.

Inventors

• 👤 O Ernst
• 👤 Der Au H Aus
• 👤 E Kusenberg
• 👤 E Hubler

Bibliographic Details