Method for improving magnesium oxide steel coatings

Details Method for improving magnesium oxide steel coatings Method for improving magnesium oxide steel coatings

1986-12-22

1988-04-26

Silverberg, Sam

Metal treatment

Compositions

Heat treating

148 62, 148113, B23K 3524

Patent

active

047402512

ABSTRACT:
This invention is directed to improved magnesium oxide slurries for use in coating silicon steels prior to high temperature annealing, comprising a calcination-modified magnesium oxide and water. Inorganic salts of barium, chromium, silicon, zinc or aluminum are added to magnesium hydroxide prior to calcination, resulting in a calcined magnesium oxide product having improved properties.
This invention is also directed to an improved process for coating silicon steel, using the above described improved magnesium oxide product.

REFERENCES:
patent: 3941621 (1976-03-01), Lee
patent: 3959034 (1976-05-01), Akerblom
patent: 4287006 (1981-09-01), Hiromae
patent: 4512823 (1985-04-01), Howe

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