Applying tension to light gage grain-oriented silicon electrical

Details Applying tension to light gage grain-oriented silicon electrical Applying tension to light gage grain-oriented silicon electrical

1989-10-10

1991-09-03

Lusigna, Michael

Coating processes

Magnetic base or coating

427318, 427444, 148113, 148122, B05D 512, H01F 104

Patent

active

050453505

ABSTRACT:
A method is provided to reduce the core loss measured at frequencies of 60 Hz or higher in light-gauge, grain-oriented, silicon steel sheet or strip of less than 7 mil thickness and conventional permeability of .mu.10<1850 at 60 Hz, the method includes coating such steel with tension-inducing stress coatings in order to exert tensile stresses on the silicon steel of at least approximately 600 psi and further provides a method with the step of preparing the surfaces of the light-gage, grain-oriented, silicon steel products to support the stresses of the applied tension-inducing stress coatings in order to prevent spalling of the coatings.

REFERENCES:
patent: 2453429 (1944-11-01), Gorman, Sr.
patent: 4032366 (1977-06-01), Choby, Jr.
patent: 4269634 (1981-05-01), Foster et al.
patent: 4608100 (1986-08-01), Malagari, Jr.
patent: 4713123 (1987-12-01), Inokuti et al.
patent: 4948433 (1990-08-01), Nakashima et al.
patent: 4979996 (1990-12-01), Kobayashi et al.

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