HEAT RESISTANT ADHESIVE FILM AND ELECTROMAGNETIC STEEL SHEET WITH SAID HEAT RESISTANT ADHESIVE FILM, IRON CORE USING SAID ELECTROMAGNETIC STEEL SHEET, AND PROCESS FOR MANUFACTURING THE SAME.

摘要

This invention provides an electromagnetic steel sheet, which, after lamination, can be bonded by pressing and heating, can realize strain relieving annealing, and has a surface covered with a heat resistant adhesive insulating film, an iron core using the electromagnetic steel sheet, and a process for manufacturing the same. The electromagnetic steel sheet is covered with a heat resistant adhesive insulating film comprising a resin, which softens at room temperature or above and 300°C or below, and a low-melting inorganic component having a softening temperature of 1000°C or below as measured by a differential thermal analysis method. A strain relieving annealable bonded fixed iron core is provided by stacking this electromagnetic steel sheet and conducting press fixation.