Accession Number : AD0265572

Title :   INORGANIC BINDERS FOR C CORES

Corporate Author : WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA

Personal Author(s) : SEIDEL,J.

Report Date : OCT 1961

Pagination or Media Count : 1

Abstract : Cores were constructed by fusing a 0.0002-in. glassy layer to the surfaces of magnetic steel strips and winding the flexible composite until the required build-up is attained. The viscosity of the glass is adjusted so that during the requisite stress relief anneal of the cores a laminar bond between the adjacent glassy layers is accomplished. A viscosity of approximately 10 to the 8th power poises at 800 C is required. To obtain a core free from residual stresses, the glass is also required to match the thermal expansivity of grain-oriented silicon steel. The problem in obtaining a composition which would have both a high viscosity and a high thermal expansivity is being solved by the synthesis of silicate glasses in the system R2O.X (RO +R2O3+RO2).(3-X) SiO2. Processes for the surface preparation of the magnetic material for binder application have been developed. A suitable slip for binder application was determined. (Author)

Descriptors :   *BINDERS, *MAGNETIC CORES, *MAGNETIC MATERIALS, ALUMINUM COMPOUNDS, BARIUM COMPOUNDS, BORON COMPOUNDS, CERAMIC COATINGS, ELECTROPLATING, GLASS, INORGANIC COMPOUNDS, LEAD COMPOUNDS, METAL FILMS, METAL FORMING BRAKES, NICKEL, OXIDES, PLATING, PROCESSING, RUBIDIUM COMPOUNDS, SILICON COMPOUNDS, SODIUM COMPOUNDS, STEEL, THERMAL EXPANSION, TITANIUM COMPOUNDS, ZINC COMPOUNDS, ZIRCONIUM COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE