WATER COOLING WINDING FOR ELECTROMAGNETIC STIRRING APPARATUS

摘要

PURPOSE:To increase water resistance by impregnating resin consisting of bisphenol type epoxy, a reactive diluent and an amine series curing agent into a winding wherein polyamide fiber having specified quantity of airflow is applied as a main insulation and curing it. CONSTITUTION:A flat type electrical wire is used as a conductor 5 and a turn insulation layer 6 is made by winding an assembled mica tape which is made to a backing by thermally melt-sticking aromatic polyamide paper on an assembled mica foil mixed with 9wt% aromatic polyamide fibrid. As a main insulation layer 7, a tape consisting of polyamide paper having 81.4g/m<2> area yield and density of <=25sec/100cm<3> quantity of airflow is lap-wound on a coil of the conductor 5. Iron core 2 is inserted into a coil 1 and fixed by using a wedge 3 and the spacers 4 and after connection, the coil 1 is subjected to vacuum pressurizing impregnation by using epoxy resin and then polymerization and curing are performed.